US1268565A - Combined type-writing and computing machine. - Google Patents

Description

W. L. GUMPRECHT.

COMBINED TYPEWRITlNG AND COMPUTING MACHINE.

APPLICATION FILED sin. a, 1913.

1 ,268,565 Patented June 4, 1918.

4 SHEETSSHEET I.

Patented J 11H? 4, 1918.

W. L. GUMPRECHT.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLlCATlON FILED SEPT. 3, 1913.

W. L. GUMPHECHT.

COMBINED TYPE WRITING AND COMPUTING MACHlNE.

APPLICATION FILED SEPT 2 1913.

1 ,268, 5 6 5 Patented June 4. 1918.

4 SHEETSSHEET 3.

W. L. GUMPRECHT. COMBINED TYPE WRHING AND COMPUTING MACHINE.

APPLICATION HLED SEPT. 3.193.

Patented June 4, 1918.

4 SHEETSS?EET 4.

' in Combined Typeunicrnn 'sra'rns PATENT orrron W'ILTJIAM L. *GUMPRECH'I, 0F Henlrxaoim, como'rre or, essiGNoR, BY vmsn'n Assten- MEETS, 9m Ummnwoon COMPUTING MACHINE ooMPANY, OENEW YORK; N.- Y., A

COMBINED wee-wartime AND oolviruruw MMJHINE- Spenificatibn of Letters Patent. Patelliid June 4,1918.

Application filed Se'ptcmher 3, 1913; "Setl al lib. 78x51}.

To all whom it may concern:

13 it known that e I, WVILLIAM L fimrrnncri r, a subject iii the King of Great Britain, residing in l lar'tford, in theconnty of Hartford and State of Connecticut, have invented certain new a 1d u'sefiul Improvements l vriting and Computing Machines, of which the following is a specificatidn. p

This invention relates to animprovement in combined typewriting and computing machines of the Underwood-Hanson type in which a typewriting and acompnting action may he carried on concomitantly, relates more especially to the means for controlling the effectiveness of the computing mechanism as determined by the carriage during its traveling movement.

T he machine in which this invention is illustrated is of the general type in which individuals of a nest of pins are set up on the striking of numeral keys, to index or afford a preliminary representation of a coniiputation which is subsequently run up or transferred to a series of computing wheels. T he setting of the pins is accomplished by a method of cross selection, which consists in setting pins corresponding to the numeral keys actuated, on particular denomiuational pin-hearing members comesponding to the columns in Which the digits struck by the numeral keys are written; The denominational niiembers carrying the pins are normally in an ineffective positionbut are brought into play ser-iatz'm to correspond with the denominational column at the printing point of the typewriter.

Inasmuch as the traveling movement of the carriage controls which denominational eohunn on the work-sheet is at the printing point, use is made also of this traveling movement to control the particular denominational. member in action.' It is, however, not desired that this mechanism, which is actuated from the carriage, shall be in operation at all times. Means is therefore pro- Vtid'ed for bringing this column-selecting mechanism into play solely when in a computing zone. To accomplish this the denominational members bearing the pins are movable individually away from their fellows by a set of'l'inkages, which in turn are actuated by one or-more tappets carried by the carriage. ll'hese tappets are normally in an ineffective position but are raised to an effetive position when. entering a computing zoneor column. The mechanism which raises the tappots is controlla ble so that it can be rendered effective or inefictive at will, by manual means. This mechanism for rendering" the tappet efiectiveis also controlled by the case-shift mechanism for the platen, so that-When Writing in upper case, that is, when it is impossible to strike numbers with the numeral keys, the tappet will be permitted to fall to its 'inefi'ective position so that no computing can mkeplace at this time.

In addition toth e above means, there is provided mechanism 'Whereby the tappet ni'ay'be silenced when the carriage returns to position to begin a new line of writing, as it is not desired to have the tappetactuate the linkages uselessly at this time,and thereby not only avoid wear and tear but also the noise of the parts clicking one by the other.

In order to further relieve the carriage of the Work of actuating the denominational linkages, means is provided whereby when the car'ria e hack spaced by the use of the usual bac' {-SPRCG key, the tappet will like- Wise be rendered ineffective It is also desirable to prevent the control of the computing mechanism from the typewriter carriage during a traveling movement of the same when tabulating so as to avoid the noise of the tappet or tappets passing rapidly over the jacks and also to avoid the Wear and tear of the parts. For this purpose whenever a tabulat'mg key is struck to give a jump movement to the carriage, then the mechanism which renders the tappets effective will itself be shifted to an ineffective position so that the lappels will all be silent until the carriage stops.

The means, then, which shifts the tappet or tappets to an elicctive position, is con trolled manually by the tabulating mechanism, by the case-shifting mechanism, by the return of the carriage, and during a back-spacing operation. Inasmuch as these parts all act directly or indirectly on the same member, lost motion is provided be tween the several parts to enable the actuation of one controlling mechanism without interfering with the other controlling mechanisms. This is particularly evident in the instance of the case-shifting mechanism. which is relieved of any drag or strain from the means which controls the effectiveness of the tappet at such times as the latter is inactive.

In this particular improvement the rendering of the tappet or tappets ineffective, even while in a computing Zone, during the return movement of the carriage, is controlled electrically by means of a solenoid, which on the slightest return movement of the carriage shifts the tappetananipulating means to an ineffective position.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a vertical section taken from front to rear with parts broken away to show the underlying structure and with parts omitted for the sake of simplicity.

Fig. 2 is a detail view of the escapement mechanism for the carriage showing the ac tion of the same.

Fig. 3 is an enlarged sectional view showing in detail the wiring to the motor and so lenoid which controls the effectiveness of the carriage to govern the action of the computing mechanism.

Fig. 4; is a skeleton perspective view showing the various controlling mechanisms for governing the eftectiveness of the carriage to control the denominational column selectin for the computing mechanism.

Fig. 5 is a detail perspective view of one of the friction clutch shoes which connects the shifter for the switch with the spring barrel whereby during the return movement of the carriage, the switch will be closed to excite the solenoid in circuit therewith to action.

Fig. 6 is a detail view showing the clutch mechanism employing several of the clutch shoes shown in Fig. 5 and their relation to the switch.

Fig. 'i' is a detail section through the spring barrel showing the parts illustrated in Fig. 6 from a different point of view.

Fig. 8 is a detail view of the case-shifting mechanism and its relation to the control for shifting the tappet into and out ofaction,

and illustrating the case-shifting mechanism in its normal position for writing lower case characters, that is, in the instance of the numeral keys, numerals.

Fig. 9 is a skeleton view of the parts shown in Fig. 8, with additional elements illustrating the shifting mechanism for the tappct thrown out of action by the manual control and showing in full and dotted lines the normal lower case and the abnormal upper case positions of the case-shifting frame and the relation of the shifting arin connected thereto to the mechanism which throws in the tappet. The parts are shown in this figure with the manual control thrown to such a position that the mechanism will not com pute, so that the caseshifting frame is free to swing up and down without interference from any of the controlling mechanisms.

Fig. 10 is a detail of certain of the parts shown in Fig. 9, showing the back-spacing mechanism in action to render the computing mechanism silent.

*ig. 11 is a view similar to Fig. 8, with the excepton that the case-shiftin frame has been rocked to upper case position to throw the tappet-controlling mechanism out of action.

Fig. 12 is a vertical view in rear elevation with parts broken away to show the underlying structure.

F 1g. 13 is a detail skeleton perspective view of the back-spacing mechanism.

Referring more particularly to the separate parts of this invention as embodied in the form shown in the drawings, 1 indicates numeral keys and 2 alphabet keys (Fig. l), which depress key-levers 3 to rock bell cranks 4; and thus swing type-bars 5 up rearwardly against the front side of a platen G mounted to rotate on a carriage 7 which travels back and forth. The movements of the carriage 7 are controlled in a letter-feeding direction by an escapement mechanism indicated in general at 8 (Fig. 2), which comes into play when any of the alphabet or numeral keys is actuated, to cause a stepbystep movement of the carriage 7, and thus control the denominational columns as written in on the Work-sheet carried by the platen 6. The escapement mechanism 8 includes a rack 9 movably mounted on the earriage 7, so as to swing into and out of engagement with a pinion 10 connected to an escapement wheel 11. The latter is controlled in its movements by fixed and movable dogs 13, which in turn are rocked by a universal frame 14, which is actuated at the actuation of any of the alphabet or numeral keys, by heels 15 located on each of the typebars 5 and engaging the universal frame 14.

The carriage 7 is given its movement in a letter-feeding direction by a spring barrel 16 (Figs. 4, 6 and 7), which is connected by a band 17 to the carriage T by means of any suitable catch 18. The spring barrel 16 in cludes a casing 19 loosely mounted on a fixed shaft 20 and a spring 21 connected at one end to the casing 19 and coiled about the shaft 20 to which it is secured at 22.

In addition to the step-by-step movement of the carriage, it may he jumped from one computing zone or column to another by a tabulating or jump-movement mechanism. This mechanism includes tabulating keys 23 mounted on key-levers 24, which are pivoted intermediate their ends and raise at their rear ends plungers 25 so that the upper ends thereof may project into the path of stops 26 adj ustably mounted on a rack 27 carried by the carriage 7.

In order to enable the carriage 7 to move so that the plungers 25 and the stops can determine the subsequent position thereof, each of the plungers 525 is provided with a shoulder 28 which engages to rock a universal arm 29 secured to a rock shaft 30. Thus when any of the tabulating keys 23 is struck. this shaft 30 will be rocked so that an arm 31 carried thereby will draw down on a link 32 to rock a lever 33 carrying at its forward end a. bearing roller 3st, which roller underlies the rack 9, thereby lifting this rack from engagement with the pinion L0. The carriage 7 is freed for the time be ng from the escapement wheel 11, and thus may be drawn by its spring barrel 16 until the next succeeding stop 26 thereon comes into engagement with the raised plunger 25.

In addition to the step-by-step and the tabulating movements of the carriage 7, means is provided for back-sparing the carriage in case it is desired to correct an error. or for any other purpose. To this end (Figs. 1, -land 13) there is provided a backspace key mounted on a key lever 36, which is secured to a shaft 37 to rock the same. Also mounted on the shaft 37, there is provided an arm 38. which will be swung dmvnwardly at the depression of the barkspace key 35, so as to pull on a link 3! against the tension of a spring 40. The link 39 is connected to a pawl 41 in such a man nor and the pawl is so mounted that it will first be drawn into engagement with the rack 9, as illustrated in Fig. 13, and then swung to the right (looking at the front of the typewriter) a distance equivalent to one letter space. so that the carriage will be antomatically drawn to the right or in a return lllltlf'ilOl]. one letter space. Details of this mechanism form in themselves no part of this invention. but are of the type usually found in the Underwood machine.

The pawl $1 is mounted on a swinging arm 42, which rocks about a pivot -13. and the pawl itself also rocks about a pivot llextending transversely to the pivot l3. The

arm 42 with the pawl 41. after the backspace key 35 has been pern'ntted to resume its normal raised position, may be withdrawn from engagement with the rack 9, by means of a spring 45, which engages a controlling lever 46 contacting with the rack 9.

Each of the type-bars 5 is provided with lower case type 47 and upper case type 48, so that each key and each type-bar is capable of writing two different characters. In the instance of the numeral keys, the lower case type write numerals and the upper case type write various signs.

In order to change from upper to lower case type, the platen (5 is mounted for vertical movement on the carriage 7 by means of a supplementary frame 48*. This frame bears, on its under side, a roller 49 which rests on the shifting rail 50 of a shift frame 51. The shift frame 51 is pivotally mounted by means of a rock shaft 52 and is arranged to engage and be rocked by an arm 53, which in turn is secured to and actuated by a. lever 54 hearing at its front end a shift key 55. There may be one or more of these shift keys and shift levers to suit the convenience of the operative.

Thus far there has been described mechanism relating solely to the typewriter. all of which in itself is old in the art but which is combined with the computing mechanism in such a way as to form a new combination.

In addition to actuating the type-bars 5, the numeral keys 1 set up a computation in the computing mechanism which is indicated in general at 56, at the same time that the u numbers are written. For this purpose, ea eh of the numeral keys 1 hears a pendent thrust link 57. which is arranged to engage an arm 58 carried by a rock shaft 59. That is to say, there is one of these rock shafts for each of the numeral keys and is arranged to he rocked by its corresponding key. Each of the rock shafts is arranged to actuate a pinsetting linkage G0, the lower reach of which is arranged in superposed relation with respect to a transverse row of settahle pins 61. These pins 1 are also mounted in longitudt nal rows extending from front to r air of the machine. and. each longitudinal row is mounted on. a denominational member shown in the form of a rack bar 132. The rack bars 62 determine the denomination of the pin set while the numeral keys 1 and the setting linkages (it) determine the particular value of the pin set to correspond with the numeral key actuated. This, then is a method of cross selection for not only setting up the value of the numeral key but setting it up in the dcnoniinalional column corresponding with the column being written in on the work-sheet carried by the carriage 7.

The denominational members (32. however. are normally located. in a depressed position such that. the pin 131 thereon are out, of reach of the phi-setting linkages (30. It is necessary then to move these denominational members individually away from their fellows and seriatim to accord the successive step-by-step movements of the carriage 7 with the successive denominational printing columns.

In order to accomplish this purpose, there is provided on a bar 63 carried by the carriage 7, one or more tappets G4, which, when in a computing zone or column, may be brought by the traveling movement of the carriage, to such a position that a pawl or cam (55 thereon will raise a series of jacks 66 individually. These jacks 66 are pivoted intermediate their ends so that when raised at their front ends, their rear ends will be depressed to thrust downwardly links 67 which rock levers 68 forming parts of a set of transposition linkages 69, which are arranged to engage and lift the denominational rack bars 62 individually and in or der. However, inasmuch as the carriage 7 travels from right to left during a typewriting operation and the computing action travels from left to right, the order of actuation of the jacks 66 by the tappets 64 is inverted from that of the actuation of the pin-bearing denominational members 62 by the transposition linkages 69. That is to say, when the jack 66 farthest to the right is actuated, the denominational member (32 farthest to the left will be raised, and so on.

lVhen a number has been indexed or set up by means of the pins 61, then these pins determine the extent to which the denominational members 62 will move to run up this number. To receive the indexed computation there is provided a series of computing wheels 70, which have gears 71 meshing with racks 72 provided on the forward ends of the denominational members or bars 62.

In order to manipulate the rack bars 62, there is provided a general operator 73, which has a cross bar 74 arranged to engage the set pins (31 and advance the rack bars 62 amounts corresponding to these pins, so that the computing wheels will. be rotated corresponding amounts. The rack bars 62 may be returned by the same general operator 73, there being provided downwardly-extending lugs or teeth 75 which the cross bar engages on its return movement. The gen eral operator 73 may be operated by hand in any suitable manner, as by means of one or more idlors 7i; cngagi ng one or more racks 77 on the general operator, which idlers 76 in turn may be rotated by one or more segments 78 on a rock shaft 79 which may be provided with a hand crank, not shown. The general operator may also be actuated by power there being provided a cross head 80 arranged to be reciprocated by being driven from an electric motor 81 through the intermediary of a single-acting clutch gearing 82. The details of this mechanism need not be described herein, inasmuch as they per 86 form no part of this invention, it being suiiicient to say that at the actuation of a key 83, the clutch of the gearing 82 will be rendered effective for a single ro tation, so that the cross head 80 will be given :1 back-and-forth movement to advance and return the general operator 73 the same as it would be done by hand.

In describing the above mechanism no mention has been made as to whether or not the tappet or iappets 6i are always in action. As a matter of fact, they are not in action except when in a computing zone and sometimes not then if undesirable. For this purpose, the tappets (ii are pivotally mounted on the rod 63 and normally rest in a depressed position on a dentated supporting rod 84- to which rod each tappet is locked by :1 lug 85 engaging between the teeth of the rod. hen in this lower position the tappets 6i are ineffective to rock the jacks (36, that is, they will pass beneath the same without touching them. W hen, however, the carriage 7 arrives at such a point that a computing zone or column on the worksheet will be in register with the printing point of the typewriter, then it is desirable to raise one of the tnppets (ii to its effective position. For this purpose, there is pro vided a zone-controlling roller 86, which may underlie and engage a following roller 87 carried by each of the tappets 6a. The ends of the zone-controlling roller 86 may be be\ eled or cam-shaped so that the following roller 87 will ride up on to the highest portion of the zone-controlling roller aml thus raise the iappet (3i corresponding with the computing zone or column in action to its eile i ve position.

'1 he zonecontrolling roller 86 is mounted on a. pair of arms 88, so that it itself may be swung to effective or incli'ective position. The arms 88 are secured to a rock shaft 89, which is provided with an arm 90 which is engaged by a roller on one arm 91 of a bell crank lever U2 normally held in an effective position by a spring 3. The lower arm of the bell crank 92 is connected to a link M which bears, at its forward end, a lingerpiece 95, whereby the same may be manipulated manually to control the efiectiveness of the zone-control]ing roller 86 and thus govern the effectiveness of the tappets 64.

As will be seen by reference to Fig. 9, in which the manual controlling mechanism is shown in a position corresponding to the ineffectiveness of the zone-controlling roller and of the tappets 64, there is provided a locking slot 96, in which the finger-piece 95 is guided and in the downwardly-extending elf-set portion of which this finger-piece may be located to lock this manual controlling mechanism in its ineffective position against the tension of the spring 93.

A spring 97 assists in bringing the zonecontrolling roller 88 to a normally effective position to raise the tappets (i i. This spring 97 (Figs. 1 and 9) is secured at one end to an arm 98 fixed on the rock shaft 89, and at its other end to an arm 99 loose on the rock shaft 89. In order to bring this spring 97 into play to return the zone controlling roller 86 to its effective position, there is also provided on the rock shaft 89, an arm 100 integral with the arm 98 so as to be secured to the rock shaft 89. Connected to this arln 100, there is provided a link 101, which has formed thereon a locking stop 102 provided with a toe 103, which as the shaft 89 rocks to remove the zone-controlling roller 86 to its ineffective position, comes into the path of movement of a pin 104: on the loose arm 99, thereby preventing a complete swinging movement of the loose arm 99 with the fixed arm 98, so that the spring 97 is stretched or tensioncd. That is to say, in moving from the position shown in Fig. 8 to the position shown in Fig. 9, the arms 98 and 99 will be spread apart from each other, so that the zone-controlling roller 86 is moved to its ineffective position, thereby tensioning the spring 97, whereby as soon as the finger-piece 95 is released and enters the horizontal part of the slot 96, the spring 97 will be free to act to return the zone-c0ntrolling roller 86 to its normal effective position ready to raise the tappets 64 to their effective position.

The link 101 performs a function of its own besides that of moving the step 102, which consists in rocking the shaft 89 Whenever the tabulating mechanism is brought into play to cause a jump movement of the carriage. For this purpose, there is provided on the rock shaft 30, "which is actuated whenever any of the plungers 25 is raised by its associated tabulating key 23, an arm 105, which is provided with a pin engaging an inclined slot 106 in the link 101. The purpose of the slot is to permit of a rocking of the shaft 89 without actuating the arm 105 and thus without rocking the shaft 30. However, when any tabulating key is actuated, it raises its associated plunger 25 so that the universal arm. 29 is swung to rockthe shaft 30, andthus,throngh the link 101, the arm 100 and the rock shaft 89. move the zone-controlling roller 86 from its etl'ective position shown in Fig. 1 to its ineffective position shown in Fig. 9.

The same arm 100 is' also made use of to silence the zone-controlling roller 86 when back-spacing the carriage. For this purpose there is provided on the rock shaft 37, an arm 107, which is provided with a pin 108 (Fig. 4) engaging in an open slot 109 provided in a thrust link 110. The thrust link 110 is secured to a pin 111 on the arm 100.

It will thus be seen that whenever the backspace key is depressed to force the carriage 7 back one space, the shaft 89 will be rocked to move the zone-controlling roller 80 to its ineffective position shown in Fig. 9.

In all of these cases, that is, where the zone-controlling roller 86 is thrown out manually, by the tahulating mechanism, and by the back-spacing mechanism, the hook stop 102 will be raised to obstruct the move inent. of the loose arm 99 with the fixed arm 98, so that the spring 97 therebetween will be tensioned ready to return the zone-controlling roller 86 to its normal effective position. The purpose of this arrangement is to permit the zone-controlling roller 86 to be swung to its ineffective position when the platen 6 is raised to upper case position without the tension of the spring 97 being brought to bear on the case-shifting mechanism at any time. To accomplish this, it will. be noted that the fixed and loose arms 98 and 99 while contacting with each other, when drawn to their nearinost position by the spring 91'', provide space thercbetween, such space forming a cam slot 112. In this cam slot extends a pin 113 secured to an arm 115 connected to the rock shaft 52 of the shift frame 51.

Now, then, whenever the shift frame is swung from the full line position shown in Fig. 9 to the position shown in Fig. 11, as in shifting the platen from its lower case position to its upper case position, the pin 113 will travel down along the hack cam side of the arm 98 to the position shown in Fig. 11, caunning the arms 98 and 99 as a unit int-o the position. shown in Fig. 11, so that the zone-controlling roller 86 is swung to its ineffective position illustrated in Fig. 11. Then when the typewriting mechanism is writing upper case characters even with the numeral keys, corresponding to signs other than numbers, the computing mechanism will he silenced as the tappcts 64 cannot be raised to their elfective position.

It will be noted in this connection that the arm 99 with the pin 104 thereon slips past the too 103 on the step 102. so that the arms 98 and 99 move as a unit without a tensioning of the spring 97.

Under ordinary circumstances, when the shaft 89 hearing the Zone-controlling roller 86 is rocked in any other way than by the case-shift frame, the pin 113 connected to this frame will, as illustrated in Figs. 8 and 10, lie in the path of a hump 118 on the loose arm 99, so as to hold it in the position shown in Fig. 10 until the cam toe 103 of the stop 102 has had time to come up and engage the pin 104 and thus force the loose arm 99 slightly rearward against the tension of the spring 97. It will be seen, however, that when the shaft 89 is rocked by the shift frame, the pin 113 is dropped down to av position clear of the hump 113, at the same time camming the fixed arm 98 around to the position shown in Fig. 11.

In addition to controlling the position of the zone-controlling roller 86 manually, by the back-spacing mechanism, by the tabulating mechanism, and by the case-shifting mechanism, this zone-controlling roller is rendered ineffective or silenced when the carriage is returned to begin a new line. This is accomplished, in the present instance, electrically, the same current which drives the motor 81 being used to excite a solenoid 119. The solenoid 119, when a current has passed therethrough, tends to raise an iron core 120 to a central position located midway of the ends of the solenoid. This core 120 is provided with a rod 121 having a bearing disk 123, which underlies a bell crank 124. The latter is slotted to receive a pin 12?) secured to a lever 126. The lever 126 is arranged to engage a pin 127 secured on a link 128 guided for movement at one end by a pin-and-slot connection 129, and pivotally connected at its opposite end to one arm 130 of a. bell crank 13 The other arm of this bell crank 131 underlies an arm 132 secured to the rock shaft 89 and acting in a manner similar to the arm 90 to rock this shaft 89, and thus withdraw the zonecontrolling roller 86 from its effective position shown in Fig. 8 to its ineffective position shown in Fig. 9.

The core 120 is limited in its movement in a downward direction by the bearing disk 123, and is further limited in its upward movement by a series of disks 133, one of which may be a cushioning disk 134 of any suitable material, such as felt, and the others of which may be looking and spacing disks 135 to determine the extent of movement of the core of the solenoid. These locking disks 135 may be adjustably mounted on the core by means of a screw-threaded connection.

Now. in order to excite the solenoid to action, use is made of the backward rotation of the spring barrel 16 when the carriage is returned toward its initial starting position. For this purpose, there is loosely mounted on a hub 13? (Figs. 6 and 7) formed on the casing 19, a collar 137. The collar 137 has pivotally secured thereto one or more friction clutch shoes 138. three of which are shown in this instance. These friction clutch shoes are of spring metal and. bent inwardly at their ends to grip frietionally the casing 19 so as to tend to cause the colla r 137 to travel with the casing 19 when the latter rotates. The collar 137 is provided with an arm 139, which is pivotally connected at 140. by a pinand-slot conncction, to a pivotally mounted electric switch 141.

During a letter feeding movement of the carriage and thus during a clockwise rotation of the casing 19 (Fig. (3), the movement of the arm 139 will tend to open the switch 141, that is, force it to the full line position shown in Fig. 6. The movement of the arm 139, however, is limited by abutting against the end of the rock shaft 30, as illustrated in Fig. 4. Any further movement of the carriage and thus of the casing 19 will cause the shoes 138 to sli so that the casing 19 is free to rotate without a further movement of the collar 137 and the arm 139.

Vi hen the carriage is returned, the spring barrel and its casing 19 will be rotated in a counter-clockwise direction (Fig. 6). so that the shoes 138 clinging to the surface of the casing 19 will swing the arm 139 to the, right in Fig. 6. moving the clcclric switch 141 from the full iinc position shown in this figure to the dotted line position so that it completes the electrical connection between a pair of contacts 142 and 143 (Fig. 4). The connection of the arm 139 to the switch 141 may be electrically insulated by forming the pin of suitable insulating material as illustrated. The electric switch 141 may he pivoted to one of the contacts. 142, and engage the other of the contacts, 143, to complete the electrical connections therebetween. These contacts 142 and 143 are electrically connected to a pair of conduits 144 and 145 of any suitable form and material.

It will be noted in passing that the c0ntacts 142 and 143 are mounted on the typewriter frame while the conduits 1-44 and 145 are mounted on the computing machine frame, and that the contacts 142 and 143 are provided with spring feet engaging but not secured to corresponding feet on the conduits 144 and 145. With this structure the typewriter frame and the parts connected thereto can he readily lifted from the computing machine frame without any necessity of unfastcuing the electrical connections.

The conduits 144 and 145 are in turn connected (Fig. to a pair of terminal posts 146 and 147. one of which is connected by a conduit or wire 148 to the source of electricity and the other of which is connected by a conduit or wire 149 to the coils of the solenoid 119. A supi'ilementary terminal post 150 is provided, which is connected by wires 151 and 152, respectively, to the return wire of the source of supply and the return wire of the solenoid coils 119.

It will thus be seen that whenever the electrical connection is completed between the contacts 142 and 143, the circuit from the source of supply to the electric solenoid 119 will he closed so that the latter will hr excited, thereby drawing its core up toward its middle. and thus. through the conu ctinr linkages, rocking the shaft 89 to withdraw the zone-controlling roller 86 from its effective position beneath the tappets 61. The terminal posts 146, 147 and 150 may hen sulated in any suitable manner and located in any suitable form of switch box and may also be connected by wires or conduits 153 to the motor 81. The conduits 144 and 145 may be each split, the parts merely contacting With each other at 200 sniticiently to make an electrical connection, and yet not secured together, so that, if desired, the switch box and the solenoid may be dropped away bodily from the conduits and bell crank 124 without disturbing the same.

In using the machine, the tappets (H- are spaced along the bar 63 at points where it is desired to have computing zones or columns. \Vith the tappets so located the combined typewritinn and computing operation may be then carried on.

The carriage 7 starting at the extreme right may be brought to the initial computino; zone or column by striking one of the tabulating keys 23. This releases the carriage from the esrapemcnt mechanism and causes one of the plungcrs 25 to project into the path of movement of one of the stops 2n. At the same time that the carriage is moving rapidly to the left in coming to the initial computing: zone or column, the zonecontrolling roller 86 will be swung to its ineffective position illustrated in Fig. 9, so that the tappet or tappets 64, which, during the traveling movement of the carriage 7 may pass beneath the jacks 66, will do so Without touching or operating these jacks.

\Vhen the carriage 7 is thus positioned for the initial computing zone or column, the tappet (it in action will raise one of the jacks 66, so as to raise the associated pin-bearing denominational rack bar 62. The first digit of the number may be written by striking one of the numeral keys 1, which, at the same time, will cause a movement of a pinsctting! linkage to set the apposite pin 61 on the raised rack bar 62. This may be repeated for all of the digits columns of the computing zone.

As the carriage travels step by step, the several denominational rack bars 62 will be raised sari/(firm to correspond with the successhe digit columns as determined by the movement of the carriage.

lVhen a number has been completely set up or indexed, it may be run up in the computing wheels by an actuation of the general operator 73 either manually or by means of the motor 81.

In case it should be desired to back space the carriage while in a computing zone or column. the actuation of the back-space key 35 will. through the connecting elements 37. 109, 110 100 and 89, rock the zone-controlling roller 86 to its ineffective position illustrated in Fig. 9, whereby the tappets lil will all be in their depressed position corresponding to their ineffectiveness to rock the jacks 66. The computing! mechanism can be silenced manually by shifting the lingerpiece 95, which also rocks the shaft 89 to move the zone-controlling: roller 86 to its incfl'ectivc position illustrated in Fig. 9.

lVhen the carriage has completed its movement to the left and it is necessary to start a new line, the carriage may be returned in any usual manner. Dnring'this return move ment the casin 19 of the spring barrel 16 will be rotated in a counter-clockwiso direction (Fig. 6) by the traction of the drawband 17. At the initial part of this rotation the clutch shoes 138 will grip the casing 19 so as to rock the arm 139 from the full line position shown in F ig. 6 to the dotted line position shown in this figure, whereby the electric switch 111 will he moved to its closed position completing the electrical con nection between the contacts 112 and 113, and thus completing the circuit to the solenoid 11!). The solenoid 115) thus electrically excited will suck up the core 120 until it assumes a more nearly mid-position, whereby the upper end of this core will force the rod 121 upwardly to rock the bell crank 124, which in turn rocks the lever 126, the latter moving the link 128 in the direction of the arrow shown in Fig. 1. This movement will rock the. bell crank 131 to rock the shaft 89, and thereby in this way remove the zone-controllingrollcr Fit} from its eil'cct ve position illustrated in Fig. 8 to its ineffective position illustrated in Fig. 9.

After the carriage has been returned, any forward movement of the carriage, even tor a letter space. will cause the shoes 133, which clutch the casing 19, to carry the collar 137 around with the casing 19 and swing the arm 139 to the position illustrated in full lines in Fig. 6, such that the switch 111 will be opened and the solenoid 11.) rendered inactive. Under these (lI'Cllll'lfiltllfl't", the weight of the core 120 will cause it to Fall, permitting the spring 97 to return the zonecontrolling roller 86 and the parts connected thereto to their normal position.

It will be noted at this point. that even for back-spacing the solenoid maybe brought into play by a single letter space barlnvard. movement of the carriage, although positive means as above described, is also provided for this purpose.

In all the movements-of the zone-controlling roller 86 from an efl'ective to an in effective position by the tabulating mechanism, the manual controlling mechanism, the back-spacing mechanism, and the carriagereturnin mechanisnn the loose arm 99 is prevented from swinging with the fixed arm 98, by the pin 113 engaging the hump 118 on the loose arm 99, until. such time that the toe 103 on the stop 102 can come up, cam

and hold the loose arm 99 a little farther rearward. Under these conditions, the fixed arm 98 moves away from the loose arm 99, so that the spring 97 is tensioned and will tend to return the zone-controlling roller 86 to its normal effective position illustrated in Fig. 8. It will thus be seen that when the zonecontrolling roller 86 is thrown to its ineffective position by any other means than the case-shifting mechanism, then the caseshifting mechanism will be free to move up and down as illustrated in Fig. 9 without any opposition from the zone-controlling mechanism and without any stretching of the spring 97. This, then, relieves the caseshit'ting mechanism of any undue burden which might otherwise be placed upon it.

In case the zone-controlling roller 86 should be in its effective position and it should be desired. to write upper case characters, under such circumstances, of coi'lrse, the pin 113 at an upward movement of the forward part of the shift frame from the full line position in Fig. 9 to the dotted line position, will cam the arms 98 and 99 to the left as a unit, rocking the zone-controlling roller 86 to its ineffective position. Inasmuch as the pin 113 drops away from the bum 118, the arm 99 would escape the toe 103 of the stop 102, so that as the latter came up it would occupy the position shown in Fig. 11 Without enabling the spreading of the arms 98 and 99 away from each other. Here, then, there is no tensioning of the spring 97, so that the case-shifting mechanism is merely burdened with the work of swinging the zonecontrolling roller 86 and the arts connected thereto.

V riations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. The combination with a. computing mechanism, of a typewriting mechanism including a. traveling carriage, a tappct carried by said carriage for according the denominations as computed with the denominations as typewritten by said typewriting mechanism, said tappet being movable between etfective and inefi'ective positions, means for shifting said tappet, and means brought into action by any return movement of said carriage for rendering said last-mentioned means ineflective.

2. The combination. with a computing mechanism, of a typewriting mechanism including a traveling carriage having an advancing movement and a returning movement, selecting means for according the de nominations as computed by said computing mechanism with the denominations as written by said typewritin g mechanism, controlling means for governing the effectiveness of said selecting means, and automatic means brought into action by any returning movement of said carriage to govern the effectiveness of said controlling means.

3. The combination, with a computing mechanism; of a typewriting mechanism including a traveling carriage; selecting means for accordin the denominations as computed by said computing mechanism with the denominations as typewritten by said typewriting mechanism, said selecting means including a movable operating element; a controlling device movable into and out of position to maintain said operating clement effective; and magnetic means operated from said carriage for governing the movement of said controlling device.

t. The combination with a computing mechanism, of a typewriting mechanism includin a traveling carriage, selecting means carried by said carriage for according the denominations as computed by said computing mechanism with the denominations as written by said typewriting mechanism, and electrical means controlled from said carriage tlor silencing said selecting means.

5. The combination with a computing mechanism, of a typewriting mechanism incl uding a. traveling carriage, selecting means carried by said carriage for according the denominations as computed by said computing mechanism with the denominations as written by said typewritin mechanism, and electrical means operated urin the return motion of said carriage for si encing said selecting means.

6. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage, driving means for traversing said carriage, said driving means including a rotatable spring barrel, selecting means for according the denominations as computed by said computing mechanism with the denominations as written. by said typewritin g mechanism, and means connected to be operated by said spring barrel for governing the efi'ectiveness of said selecting means.

7. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage, selecting means for according the denominations as computed by said computing mechanism with the denominations as written by said typewriting mechanism, driving means for traversing said carriage, and means actuated by said carriage-driving means for silencing said selecting means.

8. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage, selecting means actuated by said carriage for according the denominations as computed by said computing mechanism with the denominations as written by said typewriting mechanism, driving means for traversing said carriage,

and means actuated by said driving means for rendering said selecting means ineffective during a return movement of said carriage.

9. The combination with a computing mechanism, of a typewriting mechanism in cluding a traveling carriage, selecting means for according the denominations as computed by said computin mechanism with the. denominations as written by said type- Writin mechanism, electromagnetic means for sifiancing said selecting means, and a switch operated by a certain movement of said traveling carriage to excite said electromagnetic means to action.

10. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage having an advancing movement and a returning movement, selecting means for according the denominations as computed by said computing mechanism with the denominations as written by said typevvriting mechanism, electro magnetic means for controlling said selecting means, a circuit to said electromagnetic means, and means actuated by a return movement of said carriage for closing said circuit.

11. The combination with a computing mechanism, of a typewriting mechanism in cluding a traveling carriage, traversing means for said carriage, selecting means for according the denominations as computed by said computing mechanism with the denominations as written by said typewriting mechanism, and means actuated by sai traversing means during a reverse movement thereof for silencing said selecting means.

12. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage, a rotatable rprin barrel for traversing said carriage, selecting means for according the denominations as computed by said computing mechanism with the denominations as written by said typewriting mechanism, and means actuated by said spring barrel for silencing said selecting means.

13. The combination, with a computing mechanism; of a typewriting mechanism including a traveling carriage; selecting means for according the denominations as computed by said computing mechanism with the denominations as written by said typewriting mechanism; and controlling means acting automatically at a movement of said carriage in one direction to render said selecting means effective, and at a movement of said carriage in the opposite direction to render said selecting means ineliective.

H. The combination with a computing mechanism, of typewriting mechanism including a traveling carriage, tabulating mechanism for said carriage, denominational selecting means for said computing mechanism, and means for silencing sai selecting means, said silencin means operated from said tabulating mec ianism during the tabulating movement of said carriage or from said carriage during any return movement thereof.

15. The combination with a computing mechanism, of a typewriting mechanism in cluding a traveling carriage, zone-controlling means cotiperating with said carriage to determine the periods of activity of said computing mechanism to correspond with the computing zones as determined by the different positions of said carriage, and means actuated at any return movement of said carriage for silencing said zone-controlling means.

16. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage, zone-controlling means cooperating with said carriage during the traveling movement thereof for determining the periods of activity of said computing mechanism to correspond with the computing zones as determined by the several positions of said carriage, and electrically-operated means operated during any return movement of said carriage for silencing said zone-controlling means.

17. The combination with a computing mechanism, of a typewriting mechanism including a. traveling carriage and driving means for traversing said carriage, zonecontrolling means coiiperating with said carriage during the traveling movement thereof for determining the periods of activity of said computing mechanism to correspond with the different computin zones or columns as'determined by sai carriage, and means controlled from said carriage-driving means for governing the effectiveness of said zone-controlling means.

18. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage and means for driving said carriage, to afford movements thereof, zone-controlling means cooperating with said carriage during the traveling movement thereof for determinging the periods of activity of said computin mechanism to correspond with the computmg zones or columns as determined by said carriage, and means controlled from said driving means for silencing said zone-controlling puting zones or columns as determined by said carriage, and means actuated from said driving means for rcnderin said zonecontrolling means ineli'ectivei uring a return movement of said carriage.

20. The combination with a con'iputing mechanism, of a typewriting mechanism in cluding a traveling carriage, means operated from said carriage for controlling the active periods of said computing mechanism, electromag ne tic means for governing said controlling means, an electric circuit to said electromagnetic means, and means moving momentarily at initial movements of said carriage in opposite directions for making and breaking said circuit. ,1

21. The combination \vith a computing mechanism, of a typewriting niechaiiisnyiir eluding a traveling carriage, contro ling mechanism actuable fronrsaid carriage for determining the active periods of said computing mechanism, driving means for said carriage, electromagnetic means for governing the activity of said controlling mecha- HiSlI l a circuit to said electromagnetic means, and automatic means moving mo mentarily with the initial movements of said driving means in opposite directionsto make and break the circuit to said electromagnetic means. i

22. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage and a spring barrel for traversing said carriage, control; ling means actuable from said carriage for determining the active periods of said conr puting mechanism, electron'iagnetic means for governing the effectiveness of said con trolling means, a circuit to said electromagnetic means, and means mou'ientarily moving with said spring barrel at initial movements thereof in both directions for making and breaking said circuit so as to determine the activity of said electromagnetic means.

23. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage and a spring barrel for traversing said carriage, means actuable from said carriage forcontrolling the active periods of said computing mecha nism, electromagnetic means for shifting said controlling means to govern the elfec tiveness thereof, a circuit to said electro' magnetic means, a switch for closing said circuit, and frictional means temporarily moving with said spring barrel to manipulate said switch.

24. The coi'nbination with a computing mechanism, of a typewriting mechanism including a traveling carriage, a spring barrel for traversing said carriage, controlling means actuable from said carriage for gorerning the active periods of said computing mechanism, electromagnetic means for deter-- mining the effectiveness (if said coiitrolling means, a circuit to said electromagnetic means, a switch for closing said circuit, a collarlooscly connected to said spring bar rel, and one or more spring shoes on said collar for connecting said collar momentarily to said spring barrel at initialmovcmerits thereof, said collar being connected to manipulate said switch.

25,. The combination with a computing mechanism, of a typ ewriting mechanism including a travel ing carriage, controlling means cooperating with said carriage for governing the active periods of said computingniechanism, electromagnetic means for determining the effectiveness of said controlling means, a circuit to said electromagnetic means, a switch for making and breaking said circuit, means moving momentarily at initial movements of said carriage in one direction or the other, arranged to manipulate said svvitch,.and means for limiting the movement of said last-mentioned means.

26. The combination with a computing mechanism, of a typewriting mechanism-including a traveling carriage and casesl 1ifting mechanism, controlling means cooperating with said carriage to determine the activeperiods of said computing mechanism, meansior shifting said controlling means, a spring for. returning said controlling means after the .action of said shifting means has ceased, and connections from said case-shiftin mechanism for also shifting said contro ling means, said case-shifting mechanism acting to shift said controlling means between effective and ineffective positions while said spring remains in its collapsed condition.

27. The combination with a computing mechanism, of a typewriting mechanism in cludinga traveling carriage, controlling means cooperating with said carriage to determine the active periods of said computing. mechanism, shifting means for said controlling means, a spring for returning said controlling means to an ineffective position after having been movedby saidshifting means to an ineffective position, means connected to ,actuate said shifting means against the tension of said spring, and means separate from the last-named means connected to actuate said shiftingmeans irrespective of the tension of said spring, said shifting means being formed to relieve said lastmentioned actuating means of the burden of said spring.

Q8. T he combination ,Witll a computing mechanism, of a typewriting mechanism including a traveling carriage and case-sl1ift ing mechanism. controlling means cooper-ab ing with said carriage to determine the ac tive periodsof said computing" mechanism, a spring for maintaining said controlling means in a certain definite condition, shifting means for manipulating said controlling means and concomitantly tensioning said spring, and connections from said caseshifting mechanism for also manipulating said controlling means between effective and ineffective positions while said spring remains untensioned.

29. The combination with a computing mechanism, of a typewriting i'nechanism including a traveling carriage and caseshift ing mechanism, controlling means cooper atmg' with said carriage to determine the active periods of said computing mechanism, a spring for maintaining said controlling means in a certain definite condition, shifting means for moving said controlling means and concon'iitantly placing said spring under tension, and connections from said case-shifting mechanism for shifting said controlling means between effective and ineffective positions, said case-shifting mechanism acting positively on said controlling means while said spring remains collapsed in both effective and ineifective positions of said controlling means.

'30. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage and case-shifb ing mechanism, controlling means cooperating with said carriage to govern the active periods of said computing mechanism, shifting means for said controlling means including a rock shaft, an arm fixed on said rock 'shaft, an arm loose on said rock shaft,

'a spring connecting said arms, means for manipulating said fixed arm. and means connected to said case-shifting mechanism for holding said loose arm 51 ationary.

31. The combination with a computing mechanism, of a typewriting mechanism includiiig a traveling carriage, controlling means cooperating with said carriage to determine the active periods of said computing mechanism, shifting means for said con trolling means including a rock shaft, an arm loose on said rock shaft, an arm fixed on said rock shaft, means for manipulating said fixed arm, means preventing the movement of said loose arm with said fixed arm,

and a spring connecting said loose arm with said fixed arm and tending to return said controllin means after having been manipulated lay said shifting means.

32. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage, and certain controlling means cooperating with said carriage for governing the active. periods of said computing mechanism, shifting means forsaid controlling means, including a rock shaft, an arm fixed on said rock shaft, an arm loose on said rock shaft, a spring connecting said fixed and said loose arms to of said loose arm withsaid fixed arm so as r to tension said spring.

33. The combination with a computing mechanism, of atypewriting mechanism including a traveling carriage, and controlling means cooperating with said carriage for governing the active eriods of said computing mechanism, shifting'means for said controlling means including a rock shaft, an arm fixed on said rock shaft, an arm loose on said rock shaft, a spring connecting said fixed and said loose arms together, means for manipulating said fixed arm, means for preventing a movement of said loose arm with said fixed arm so as to tension said spring, and means for shifting said fixed and loose arms as a unit.

34. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage and a caseshifting mechanism, controlling means cooperating with said carriage to govern the active periods of said computing mechanism, a rock shaft connected to said controlling means, an arm fixed on said rock shaft, an arm loose on said rock shaft, a spring connecting said arms, and means connected to said case-shifting mechanism for moving said arms as a unit.

35. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage, a case-shifting mechanism, controlling means cooperating with said carriage for governing the active periods of said computing mechanism, a rock shaft for said controlling means, an arm fixed on said rock shaft, an arm loose on said rock shaft, a spring connecting said fixed and loose arms, connections to said casc-shifting mechanism enabling the movement of. said fixed and loose arms as a unit when said case-shifting mechanism is actuated, and means for concomitantly shifting said fixed arm and holding saidloose arm against movement so as to tension said sprin to return said controlling means to its initial position. i

36. The combination with a computing mechanism, of a typewritingmechanism including a traveling carriage and a caseshifting mechanism, controlling means cooperating with said carriage to determine the active periods of said computing mechanism, a rock shaft for said controlling means, an arm fixed on said rock shaft, an arm loose on said rock shaft, a spring connected to said arms, said arms having a cam slot therebetween, and means connected to said case-shiftin mechanism engagin said cam slot to manipulate said rock sha t and thus said controllin means.

37. The combination with a computing mechanism, of a typeii'ritin'g 'me'o hai'i'isin including a traveling carri'a etl'nd a caseshifting l'r'iechar'i'isr'n, c'oi' tro ling means 60- operating with said carriage to determine the active periods of 's'a'id computing-mechan'isn'i', a ro'clt shaft for "said contr'oTl-in" means, an arm hired on said r'o'clc' shaft, an arm loo's' oii sa'id rock shaft, a sp rifi coniiecting said arms, means for manii'i atin said fixed arm, and means coiii 'ecte to sail case-sliifting mechanism foi preventing a movement or said loose ai'm sa a-maxed ai-ni when said case-shifting r'iie'chanisiii is in a' 'osition' corresponding to the wiiniig of lower case characters.

38 The combination ivith a ctiinpiiting mechanish'l, of atypewriting mechanism including a traveling carriage and a caseshifting mechanism, controlling means coop'erziting with said carriage to determine the active pcriodjs of said com nting iI iechanism, a rock shaft for sai contF'lling means, an arm xed on said rock sha' t, an arm loose ohsaid rock-shaft, a spril'ig con nectingsai arms, means for manipulating said fixed arm, means connected to said caseshiftin mechanism for preventing a movement said loosearm with said fixedarm n hensaid case-shifting mechanism is "in a position correspon ing to the, Writing of lower case characters, and a stop operated by said' manipulating meanswfor assuming the burden of holding said loosearn Stittionary so as to permit a free movemntof said case-shifting mechanism. I

39. The combination with a computing mechanism, of a'typewi'iting mechanism including a traveling carriage, tabul-ating mechanism for controlling jump movements of said carriage, and-backspacing mechanism, controlling means cooperati-ngwith said carriage to determine the active eriods of said computing mechanism, a roc r shaft for said controlling means, anarm fixed on said rock shaft, an arm loose on said 'ro'ck shaft, a spring connecting said fixed and loose arms, connections between said tabulating mechanism and said fixed arm enabling the manipulation of said controlling means from said tabulating mechanism, anda stop for preventing the movement of said 100% arm with said fixed arm so as to tensionsa'id spring to enable the return of 'said controlling meansby said spring after an actuation by said tabulating means 40. The combination with a computing mechanism, of a typewriting mechanism including a traveling carriage, 'tabulating mechanism for controlling jump movements of said carriage, and back-spacing mech anism, controlling means cooperating with said carriage to determine the active; 'eriods of said, computinjg mechanism, a mo "shaft for said controlling means, an arm fixed on said rock shaft, an arm loose on said rock sha'ft, a sp'1"in% cor'in'ctin and fixed and loose arms, c'o fnet'fons be was aid tabulat'mg mechanism and and fixed arm en'- abli'iig the mafl'i'i nl ation bf said controlling Irfeansfi oni saili tabi'ilating inechanisn'i, it stop" for preven'tfi the movement? said loose arm with fiiied arm so as to tension said spring to enable'fthe retnrnfo'f said colitrollin "means b'j "saidfspring' after an actuation and c'bnhectlons Sa'idcits-s'liifting fiic anism 'ei ab'lifiig" the assailantot Salaam and loose arms as a iinit to shift's'a'id contrdlliil%nii=3ans.

he combination ivith a; computing mchainsm, a tj pe'w'riting mechanism incltiding trav'e ing carriage, backspacing mechanismfor said eating; and ease-shiftng' mechanism, controlling means cooperat- 1ng Tii'l h s'aid carriage to determine the active periods of said computing mechan'i'sn'i, rock shaft for said controlling meiihs, an ai nifikd said-ibck's'ha'ft, an arlii lcds'eb 'said rack shaft, a spring connecting said fixed and loose arin's', connections enabling the 'thanipu ation 0 said medalist said backspacing mechanism, and a stop or pve'ntifigth movement 2) said loose arm Witlisttid fixed a'rrii, so as to tension said spring to return said controlling means after :1 maniplllation b said backspacing mechanism.

The animati n with a compiiting mechanism, of a typewriting mechanism including a traveling carriage, tick-spacing mechanism for said carriage, and case-shiftng mech'a'riism, controlling means cooperatmg with s'ai' carria' e to determinet'he active periods of saidcom iitiiig-inechanism, a rock sialft for said controlling means, an arm fixed on said rock shaft, an arm loo'seon, said rock shaft, a spring connecting Said sized and loose arms connections enabling' the aanipuiaioa 0% and fixed ar'fn b said Ban spacing mechanism, a stop for p evntingt e movement of said loose'arln with said fined ar'm so'as to ten si'oii said sprin to return s'aid coiitrollihg means after a manipulation by said backsp'a'cing mechanism, and connections enabling the mov'milt of said li'x'ed and loose arins as a unit 'Wi'thout tensi'ohin'g said spring by said case-shiftingmechanism.

43. The combination 'Wit a computing mechanism, of a typewriting mechanism inclnding a travelingcarriag e and case-shifting inecllianisin, controlling means coopering Witl said carriae to determine the active periods of said computing mechanism, a rock shaft for said controlling means, an arm fixed on said-rock shaft,an arm looseon said rock lshaft, a sprin connecting said arms, means for-manipu ating said fixed arm, and connections to said "caseshifting mechanism for preventing the said tabillating' mechanism,

movement of said loose arm with said fixed arm when said fixed arm is manipulated by said last-mentioned means and also acting to cause a movement of said loose arm with said fixed arm when manipulated from said case-shifting mechanism.

44. The combination with a computing mechanism, of denominational selecting mechanism for said computing mechanism, a carriage traveling to operate said denominational selecting mechanism, zone-controlling means for determinin zones in the travel of said carriage whereln said denominational selecting mechanism will be active, and shifting means operated from said carriage during the travelin movement there of for controlling the e ectiveness of said zone-controlling means.

WILLIAM L. GUMPRECHT.

Witnesses:

WM. BJonKMAN, [u s. LYMAN D. Bnoncn'ron. [n 3.

Copies or thin patent may he obtained tor five cents each, by addressing the "commissioner o! I'ltontl,

wumnmn, D. 0."

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