US1238908A - Type-writing machine. - Google Patents

Description

F. A. HART.

TYPE WRITING MACHINE. APPLHEATION FILED MAR-13.1914.

Patented Sept. 4, 1917. 4 SHEET SSHEET 1 F. A. HART.

TYPE WRIHNfi MACHINE. APPLICATION FILED MAR.13, 1914.

Patented Se t. 4,1917.

'4 SHEETS SHEET 2.

E E mNw hm mm -w F. A. HART.

TYPE WRITING MACHINE;

APPLICATION man MAR. 13, 1914.

4 SHEETSSHEET 3.

PatentedSept l, 1917.

F. A. HART.

TYPE WRITING MACHINE APPLICATION HLED MAR. 13, 1914 4 SHEETS-SHEET 4. v

- ma FIE Patented Sept. 4,1917.

UNITED srnirns ra rnn r FREDERICK A. HART, F NEWARK, NEJV JERSEY, ASSIGNOR T0 UNDERWOOD C01VIPUT- IN G MACHINE COMPANY, OF NEW YORK, It", 5. A CORPQRATION OF NEW YORK.

TYPE-WRITING- MACHINE.-

Specification of Letters Patent.

Patented Sept. 4, rec.

Application filed March 13, 1914. Serial No. 82%,429.

- To all whom tmay concern."

Be it known that I, FREDERICK A, HART, a i

' citizen of the United States, residin in Newark, in the county of Essex and tats of New Jersey, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

This invention relates to typewriting machines and more particularly to mechanism for effecting the return of the carriage.

A motor used for returning the carriage is connected through suitable gearing also comprising a clutch to drive the carriage; a switch being utilized to close the motor circuit for the carriage return. Means is provided for automatically actuating the said clutch shifter to close the motor circuit as the carriage completes its forward travel, meansal'so being provided for actuatingthe clutch between the carriage and the motor when the motor starts, so that the carriage is returned-by the motor. A manual key may also be provided to close the switch for the motor and operate the clutch between the motor and carriage for returning the latter to any intermediate position.

The electric motor is connected through suitable gearing, including a clutch, to a pinion running inmesh with a rack on t he carriage for driving the latter, During the forward trvel of the carriage, the-motor may remain at rest, and as the carriage com pletes its forward run, said carriage may operate through suitable connections to establish a motor circuit, and thereby start the motor. Right and left hand adjustable margin stops determine the limits of travel of the carriage, and also have connected. thereto, cams operated by anarm on the carriage to .efl'ect the opening and closing of said clutch at the beginning and completion of the return travel of the carriage. Theleft hand margin stop isadjustable along a rack bar, which may be swung downward by an arm on the carriage striking a-cam connected to said stop, and thereby swing forward a depending arm connected to said rack. Said depending arm moves forward a locking bar to lock the numeral keys, and also moves a latch into bperative position to efiect the The switch for closing the motor circuit as the carriage is completing its forward movement, is connected with the locking bar, which latter, when moved forward, as above stated, operates a bell crank which shifts the switch lever to position to close the circuit and thus start the motor, thereby rotat ing the carriage-returning gearing and closing the carriage clutch. To maintain the switch lever in this position and thereby, keep the motor circuit closed long enough to permit the return of the carriage, the said a switch lever is automatically engaged by an arm on a friction ring on the spring drum which" propels the carriage in letter-feed direction. When the carriage commences its contact with the switch lever so as to hold it in position to close the switch. Said frictionrihg may also. operate an arm or proj ection thereon, into position to lock the .tab-

' return, this arm on said ring is brought into ulating mechanism during the return of. the

carriage.

A manual key for returning the carriage from any intermediate position may be connected to operate said switch lever to close the motor circuit, and may also actuate thesaid latch for efiecting the operation of the clutch between the motor and the carriage.

Said manual key may also operate the looking bar to lock the numeral keys' Other features and advantages will hereafter appear.

In the accompanying ,drawings which illustrate one form of my invention as applied to an Underwood-Hanson typewriting and computing machine,

Figure 1 is a part sectional side elevation of the combined typewriting and computing machine.

Fig. 2 is a detail view of theswitch members associated with .the transmission mechanism.

Fig. 3 is a sectional view of the junction box showing the connections between the electric mains and the motor.

Fig. 4 is a perspective View of the right ha -d margin stop and associated mechanism.

Fig. 5 is a sectional side elevation view of the typewriting machine.

Fig. 6 is a view similar to Fig. 4 but showing the left hand margin stop and associated parts.

Fig. 7 is'a detail view of the clutch releasing trip connected to the right hand margin stop.

Fig. 8 isa'rear elevation view of the carriage drum and the means controlled thereby for maintaining the motor circuit closed during the return of the carriage, also of the means for preventing operation of the tabulatingmechanism during the carriage return.

Fig. 9 is a detail-view of the clutch be- Fig.1l is a diagrammatic view of the electric circuits.

Fig. 12 is a perspective view of a switch and operating mechanism therefor.

Fig. 13 is a rear elevation view partly in section of the combined typewriting and computing machine.

The letter keys 1 and the numeral keys 2 are connected to key levers 3 and 4, fulcrumed at 5 and connected through bell cranks 6, to the type bars 7 on a fulcrum rod 8. When a key is depressed, the corresponding type bar is swung upwardly and rearwardly about its fulcrum to bring the types 9 against the printing face of the platen 10. The platen frame 11 is shiftable as usual to upper and lower case positions, and is mounted on a carriage 12 which travels on'front an'd' rear guide rails 13 and 14 respectively. Rollers 13 and 13 on the carriage run respectively on the rail 13 and the under face of the scale supporting bar 13 of the machine frame. The roll 15 on the platen frameruns on a shift rail 16 shiftable. up and down'by the usual mechanism to move the platen to upper and lower case positions. The carriage is driven in letter-feed direction by a spring motor 17 connected through a draw band 18 to the' The letter-feed movement of the carriage.

carriage may be controlled by the usual lettor-feed mechanism, (Fig. 1), comprising escapement dogs 18 cotiperating with an escapement wheel 19, said dogs actuated by a universal bar 20, operated by heels 20 on the type bars. The operation of the type bars permits a step-by-step rotation of a pinion 21 connected to the escapement wheel 19, said pinion running in mesh with the carriage rack 22, whereby a letter-feed travel of the carriage is effected.

The tabulating mechanism may comprise keys 23 on levers 24, the latter fulcrumed at 25 and having their rear ends extending beneath vertical plunger stops 26, which when the keys 23 are depressed, are projected upward into the path of column stops 69 on a rack bar 27 on the carriage.

" An electric motor M is provided for automatically returning the carriage and for operating the general operator of the computing' mechanism. The gearing for driva pulley 28 fixed to the motor'shaft 2 9, and

connected through a belt 30 to a sheave 31 on a shaft32, to which shaft 32 is also secured-a sheave 33 connected through a belt 34 to a sheave 35 on a clutch shaft 36. Fixed to the shaft 36 is a member 37 of a clutch which also comprises a member 38 loose on said shaft, and shiftable into and out of engagement with the fixed member- 37. Fixed to the shiftable member 38 is a pinion 39 in mesh with a rack 40 on the carriage for returning the carriage and operating the line-spacing mechanism. The clutch is closed to connect the motor M- to the pinion 39, in order to return the carriage when the latter completes its letterfeed movement at the end of each line, and said clutch is thereafter opened when the return movement of the carriage is completed, the opening of the clutch being controlled by the right hand margin stop 108, Fig. 4, and its closing by the left hand margin stop 41, F ig. 6.

The margin stop 41 is slidably mounted on a rockable rod or shaft 42,.and held in any desired position of adjustment by a rack 43 cooperating with a pivoted dog on the stop, said dog actuated by a finger lever 44. The rack bar 43 is pivoted by means of arms 45 at the ends of the rack bar to rock on the shaft 42 as a fulcrum. The rack bar 43 is held up in its normal position by a coil spring 46, Fig. 4. As the carriage approaches the limit of its forward movement determined by the position of the stop lower end against a lug 55 connected to a universal locking bar 56, so that said bar is carried forward beneath the hooks 57 on masses 3 the numeral key levers 4-, and locks said lovers. The locking bar 56 during its initial forward movement operates, through a; link 53 hooked at its forward end on the locking bar,=and pivoted atits opposite end to a latch lever 59, to move, said lever into position to effect the closing of the clutch 37, 3s.

As the carriage completes its forward movement, the circuit for the electric motor M-is closed by means about to be described,

so that the motor is running, and the fixed clutch member 37 is therefore rotating at this time. To effect this object, the bar 56 is ;,on a second conductor 103, so as to electrically connect said conductors and thereby close the motor circuit, said switch lever being normally held in open position, however, by means of a controlling spring 107. Bar 56 is normally in contact with the shoulder formed by the front wall of seat 123 and in consequence when said bar 56 is moved forward, as above described, the

bar 123 will likewise be forced forward and will, in turn actuate bell crank 125, the lat: ter depressing the switch lever 99 and closing the motor circuit. When said circuit is closed, the motor will be started, and will rotate the clutch shaft 36 through the intermediary' of the belt gearing-previously men- .tioned; The rear face of the clutch member 37 is formed with a cam 60 (Fig. 9), against which bears the upper end of a bell crank lever 61, fulcrumed on a shaft.62, and having'an arm 61 extendingforward from the shaft 62. An arm 63 on the shaft 62 is connected through a spring 61 to the arm 61 the movement of the arms61 and 63 toward each other being limited by a stop 61 on the arm 61*. The bell crank lever 61 therefore is vibrated by the rotating cam 60,-

being held against the cam by a spring 60 (Fig. 10) and imparts a vertical reciprocating motion to the latch 5.9 pivoted on the arm 63. The upper end of the latch is thus vibrated in frontof a horizontal arm of a bell crank lever 64 pivoted at 65 to the stationary bracket 66, the latch 59 being in position to clear said bell crank arm 64 when ,the motor is started. When, however, the

carriage at the completion of its forward run, operates the cam on the left hand margin stop, as above described, to move the locking bar 56 forward, the link 58 draws the upper end of the latch against the bell 65 crank 61, and as the latch is carried downward by the vibrating lever 63, it engages beneath the bell crank (i i-sq that when the arm 63 again rises, the bell crank 6 f is swung about its pivot 65, and a knob 67 on the upper end of the bell crank 64: and

which runs in an annular groove .68 in the hub of the pinion 39, carries said pinion rearwardly and connects the clutch members 38, a 37. The first part of the rightward movement of the horizontal bar 123, at Fig. 9, serves to swing down'the bell crank 125 to close the circuit. During the continued motion of said bar to the right, which motion is permitted by reason of the yielding connection at 124 between said link 123 and the bell crank 125, the link 58 (which is also connectedto the frame 129, 56, moved by the depending arm 54) swings the lever 59 far enou h to enable the tip thereof to get under the c utch-closing arm 64 to rock the clutch closed at 37, 38, as shown. It will be understood vthat the closing of the circuit at 125 causes the motor to start and with'the starting of the motor a pulley 35 is turned together with the cam 60, which cam 60 rocks the arm 61". Arm 61 through spring 61 and stop 61-moves the arm 63, so that the lever 59 is jigged up and down, and when it is first brought into the down position, it

is swung under the clutch-closing arm 6% her 37, whose cam 60 controls the bell crank i 61 which, in turn, controls thebell crank ,64: that shifts the loose clutch member 38,

is fixed to the clutch shaft 36 to rotate therewith, and since said clutch shaft is itself driven from the electric motor, it results that the power. by which the clutch is thrown in, is supplied. directly from the electric motor. The pinion 39 is thus connected to the motor and drives the rack bar 40 to return the carriage. The line-space mechanism may also be operated automati sons subsequently explained, that such closing of the circuit does not effect return of the carriage; and is independent of the closing effected by the actuation of the switch 99. A stop 69, Figs. 5 and13, which is one of a series mounted on the rack bar 27, is provided with a tappet 7 0 into the path of which projects a cam lug 71 on a lever 72 pivoted intermediate its ends, each stop being adjustable along the rack and prefer: ably positioned to engage the lug 71 upon, or substantially upon, the operation of a key inithe units column of a computing zoneb 'The stop 69 shown is positioned to engage said lug shortly before, or just as,

the carriage completes its forward travel through a computing zone. The lever 72 operates through a pull link 73 to rotate a bell crank 74, to which is connected one end of a laterally. extending bar 75, the other end of which extends over a lever 76, Fig.

1, and when the bar 75 is thus retracted and the lever 76 released, a spring 77 swings said lever about its fulcrum 78, and by means of a pin 79 depresses a rod 80. Said rod rotates a lever 81 about its fulcrum 82, and thereby lifts a stop'pin 83 from engagement with a lug 8 1 .provided on the metallic inner member of a switch disk 92, said member fitting loosely on a cup member 87 which fixed on a shaft 88. This stop pin, when so withdrawn,;releases a clutch-operating ring 84 which'operates to rotate disk 92 into position to establish an electric circuit for the motor, and also operates a clutch to connect the motor to the mechanism for driving the general operator. The clutch-controlling ring 81, when released as just described, is rotated by a spring 85 in the direction of the arrow, Fig. 1, to carry a roller 86 upward and jam it between the cam surface of the rim of the cup member 87 and the hub of a worm gear 89 loose on shaft 88, the lateral projection with which said ring is provided bearing against lug 81 and thereby rotating disk 92, as will be understood. The worm gear 89 is thus connected to the shaft 88, said gear being driven by the worm 90 on the motor shaft 29. The metallic outer member of disk 92 (see Figs. 2 and 13) is connected to, but insulated from, the inner member thereof, and carries contact lugs 91, which lugs 91, as the clutch ring and disk are rotated by the spring 85, engage spring con.

tact arms 93, thereby electrically connectmg said arms, and establishing a circuit through the motor M. The motor is thereby started.

The motor operates through the worm gearing 90, 89 to rotate the shaft 88 which is connected to a crank, (not shown), to reciprocate a slide 9 1 connected to the general operator 95 of the computing mechanism. Said slide is given one complete reciprocation and actuates the general operator through one complete cycle by the time the worm gear 89 has made one complete rotation and is again released from the motor by the stop pin 83 which in the meantime has been returned into the path of the lug 84:" on the switch disk 92.

In order to maintain the motor circuit closed 'during the return movement of the carriage, the following means is provided. The carriage return drum 17 (see Figs. 8 and 13), carries a ring 96 which may be frictionally held in place by springs 97 secured to the drum, and said ring is provided with an arm 98 depending into position to contact with the switch lever 99. Normally the arm 98 is free from the switch lever, but

as soon as the carriage commences its return movement, the drum 17 is rotated in a counter-clock-Wise direction, Fig. 8, and the arm 98 engages the switch lever which has previously been actuated by the bell crank 125,

as will be understood, and prevents it from moving backward; Theswitch 99 is thus held closed during the return movement of the carriage. By reference to the diagrammatic view of the motor circuits, Fig. 11, it will be seen that the motor circuit is completed through either the switch 92 of'the transmission gearing or the switch 99 connecting the conductors 102 and 103, as has already been explained. i

The ring 96, Fig. 8, further serves to prevent operation of the tabulating mechanism .drum 17 invariably pulls the carriage a short distance forward before the escapement dogs l8 'are in position to hold the carriage. During this slight forward rota tion of the carriage drum, the ring 96 is returned to the position shown in full lines in Fig. 13, thereby releasing the tabulator mechanism, and also permitting the switch 99 to be opened by its spring 107. The electric motor M may then remain at rest during the forward travel of the carriage.

As the carriage has about completed its return movement, the clutch 37, 38 is opened by the following mechanism to disconnect the carriage from the motor. Referring to Fig. 1, the right hand margin stop 108 is mounted on the shaft 42' for adjustment longitudinally of the carriage and is held in adjusted position by a rack 109 with which engages a pawl pivoted to the margin stop and operated by a finger piece 110. Connected to the margin stop for adjustment therewith, is an arm 111 splined on the rock shaft 4.2, and carrying a cam 112'120 in the path of the arm47 on the carriage, Fig. 6. The arm 111 may be connected to the stop 108 by means of a lip 113 on the stop entering a notch in said arm, such con nection permitting the arm to rock with ,the shaft 42. As the carriage nears the end of its return movement, the arm 7 strikes the cam 112 and rocks the arm 111 and with it, the shaft 42, thereby swinging forwardly a depending arm 114 fixed to the shaft 42.

This movement of the arm 114 moves forward a link 115 connecting said arm with a rock arm 116 (see Fig. fixed to the shaft 65, and rocks. saidshaft and with it the bell crank64 to the Fig. 5 position,

thereby separating the clutch members 38, 37

and disconnecting the carriage from the motor. a

The carriage may be returned from any intermediate position by depressing a key 117 connected through a pin 118 working in a slot 119 in the machine frame, to an arm 120 fixed to a rock shaft 121, to which is also fixed an upwardly extending rock arm 122. To this arm 122 is pivotedlthe front lend of the link or slide bar 123, which latter,

through the bell crank 125, Qperates'the switch 99 to close the motor circuit. The bar 56 is moved away from key-locking'pd sition by the usual spring (not shown).

The 'coil spring 124 is then extended by the continued forward movement of the bar 123 as the key 117 is further depressed'to lock the numeral 'keys as above noted." The forward movement of the locking bar 56 is transmitted through the link 58 to the latch 59, as heretofore explained, to efiect the closing of the clutch 37, 38. The armf127 being elastic or yielding permits the.key"117 to be depressed and the motor circuit established independently ofthe movement .of the'locking bar 56, which may be prevented from moviag'forward' on account of the upper end of the latch 59 hearing against the forward end of the bell crank 64, as

. shown in Fig. 10, until the arm 63 is set in" motion by the rotating clutch member 37,

and the latch 59' carried downward to position to snap beneath the bell crank 64 as in Fig. 9. It will thus be seen that the key 117 when depressed, firstcloses the switch to start the motor, and then operates to lock the numeral keys and sets the latch '59 so, that the clutch is shifted by the motor. When the key 117 is released, it is returned by the coil spring 118, Fig. 9, which may also return the bar 123 and permit the switch 99 to open. It will be noted that the shiftable clutch member38 is actuated by power supplied directly from the motor M, whether the latch 59 is set by themanual key 117 or by the carriage operating through the cam on the margin stop. This arrangement provides ample power for operating the clutch and is much more reliable than an arrangement in which the movement of the carriage is relied on to operate the clutch; w

The general operator 95 of the computing pin-setting linkages.

mechanism is manually controlled by a key 130, Fig. 1, connected to a lever 131 extending over the lever 81 and operable when the key 130 is depressed to actuate saidlever and withdraw the holding pin 83,- thereb'ypermitting the clutch -member 841 and switch disk 92 to operate as heretofore described to close the motor circuit, and also connect the motor through the worm gearing to the driving slide 94 to reciprocate the latter, and thereby actuate the general operator through one cycle.

The numeral keys 2- are provided with pendants or thrust links 132 each adapted to strike ,an arm 133' on a rocker 134, and cause the latter through a linkage 135 to set up a pin 136 on a rack bar 137, thus moving said pin into the path of the general operator. operation of the numeral keys to be set by selector dogs 138 on the carriage. Each selector dog is provided with atappet 139, which during the travel of the carriage, comes successively into engagement with the individuals of a series of jacks 140. These jacks depress thrust links 141 and through levers 142 and transposition mechanism 142*, raise the rack bars 137 to bring the pins 136 thereon into position to be depressed by the The specific form of computing mechanism does not in itself form a part of the present invention, and need not be set forth further in detail.

The typewriting machine frame 144 may beremovably supported on the ca s ing'145 which contains the computing mechanism, said casing in turn removably connected to the frame work 146 which supports the motor and transmission gearing. To permit the removal of the typewriting machine, the lower endsof theelectfic'al contact bars 102, 103 are bent forward as shown in Figs. 5

and 12 and rest on the contact bars 147 and 148' in the casing 145, said bars 147 and 148 binding post 160, and a conductor 163 con- The bars 137 are positioned'by the nected to an intermediate binding post 164. a

A cable 165 extending from the junction box 151 comprises conductors 166 and 167 con nected to the binding posts .164 and 161 re spectively. These conductors 166 and 167 may .be connectedAto the motor terminals. A cable 168 leading from-cable 165 may 'carry a wire connecting conductor 167 of the one terminal 93 'of the transmission clutch switch, the other terminal of said switch being connected through a conductor 169 in a cable 169? to the binding post 160.

The following claims are limited to type- 1 writing mechanism. Claims directed to the combinedcomputing and typewriting mechanisni disclosed herein are presented in my pending application No. 142,361, filed J anuary 15,1917.

Variations may be restorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim: v

1. In a machine of the character described, the combination with a traveling carriage, of a motor for returning the carriage, means dependent upon the operation of the niotor to establish the driving relation between the motor and the carriage, and means controlled by the carriage for controlling the eflectiveness of said first-mentioned means.

2. In a machine of the class described, the combination with a traveling carriage, of a motor for actuatingsaid clutch to connect the carriage with the motor, and means operated by the carriage to automatically start the motor when the carriage completes its 'forward travel.

4. In a machine of the class described, the

combination with a traveling carriage, of an electric motor, a switch in the motor circuit, means operated by the carriage during its forward travel to actuate said switch, and thereby start the motor, driving gearing between the motor and carriage comprising a clutch, and means set by the carriage and operated by the motor to connect the mem bers of said clutch, and thereby establish a driving connection to the carriage.

5. In a machine of the class described, the combination with a traveling carriage, of an electric motor, a switch in the motor circuit, means operated by the carriage during its forward travel to actuate said switch, and thereby start the 'motor, driving gearing between the motor and carriage comprising a clutch,-means set by the carriage and operated by the motor to connect the members of said clutch, and thereby establish a driving connection to the carriage, and means to automatically open said-clutch and disconnect the carriage from the motor.

6. In a machine of the character described,

the combination with a traveling carriage, type bars, and keys for operating said type bars, of a motor, means for connecting the motor to the carriage to return the carriage, and means controlled fromfthe carri'age' for controlling said connecting means and for automatically locking the keys.

7. The combination with a traveling carriage, of a motor to return'the carriage, an adjustable margin stop to limit the forward travel of the carriage, a clutch between the motor and the carriage, and a device controlled from said margin stop and actuated by the motor and carriage jointly to control the operation of the clutch. 1

8. The combination with atraveling carriage, of a motor to return the carriage, an adjustable margin stop to limit the forward travel of the carriage, a clutch between the motor and the carriage, a device adjustable with said margin stop and actuated by the carriage, and means cooperating with said device to control the operation of the clutch, said motor acting. through said device to connect the members of said clutch when said device is actuated by the carriage.

9. In a machine of the class described, the combination with a traveling carriage, of a motor, gearing between the motor and cars riage comprising a clutch, means controlled by the carriage to automatically start the motor, a member reciprocated by the motor, a latch carried thereby, and means to set said latch into operative position, and therebyeiiect the closing of said clutch.

10. In a machine of the class described,

the combination with a traveling carriage,

of a motor, gearing between the motor and carriage, comprlsing a clutch, a member oscillated by the motor, a latch carried by said member, a lever between said member and one of the clutch members, and means for setting said latch into a position to oplegrate said lever and connect the clutch memers.

11. In a machine of the class described, the combination with a traveling carriage, of a motor, gearing between the motor and carriage comprising a clutch, a member oscillated by the motor, a latch carried by said member, a lever between said member and one of the clutch members, means operated by the carriage to automatically start the motor, and automatic means for setting said latch when the carriage has completed its forward movement and thereby cause the ,latch to operate said lever and connect the clutchinembers to effect return of the carriage.

12. In a typewriting machine, the combi nation with a traveling carriage, of a motor to return the carriage, driving connections between the motor and carriage includii'ig a neeaeoe nation with a traveling carriage and a spring drum for propelling the carriage m a forward direction, of an electric motor for returning the carriage, a switch in the motor circuit, and a friction member actuated by said drum to hold said switch in closed position.

14. The combination with a traveling carriage, of a spring drum for propelling the carriage in letter-feed direction, an electrlc motor to return the carriage, a switch, and

a friction member actuated by said drum to hold said switch in closed position and maintain the motor circuit closed throughout the return movement of the carriage.

In. a machine of the class described, the combination with a traveling carriage and a motor to return the carriage, of tab ulating mechanism, and means to automatically lock said mechanism against operation during the return travel of the carriage.

16. In a-machine of the class described, the combination with a traveling carriage,

a motor for returning. the carriage, and aswitch in the motor circuit, of a spring m0- tor for propelling the carriage in a forward direction, tabulatingmechanism, and means operated by said spring motor .for locking the tabulating mechanism and holding said switch closed during the return movement of the carriage.

17. In a machine of the class described, the combination with a traveling carriage, of an electric motor for returning the carriage, gearing between the motor and car'- riage, comprising a clutch, mechanism actuated by the motor for connecting the clutch members to drive the carriage, a manual key, and means operated thereby to set the said mechanism and causet-he motor to connect the clutch members, and then return the carriage.

18. The combination with a traveling carriage and an electric motor for returning the carriage, of gearing comprising a clutch between the carriage and motor, clutch operating mechanism operated by the motor comprising a device normally in ineffective position, a manual key, a sw1tch operated thereby to establish a circuit for the motor, and means operated by said key for moving said device to efiective position, whereby the clutch is operated anda driving connection established between the motor and the carriage. a

19. The combination with a traveling carriage and an electric motor for returning the carriage, of gearing comprising a clutch between the carriage and motor, clutch op erating mechanism operated by the motor comprising a device normally in inefl'ectivc position, a manual key, a switch operated thereby to establish a circuit for the motor, means operated by. said key for moving said device to efiective position, whereby the clutch is operated and a driving connection established between the motor and the carriage, automatic means for establishing a motor circuit when the carriage is near the end of its forward travel, and automatic means for actuating said clutch controlling device to effect the return ofthe carriage.

20. In a typewriting machine, the combination with a traveling carriage and an electric motor for returning the carriage, of a manual key, a switch operated thereby to establish a circuit for the motor to return the carriage, a spring motor for propelling the carriage in a forward direction, and a friction device actuated by said spring motor to hold said switch closed independently of the manual key during the return of the carriage! 21. In a typewrit-ing machine, the combination with a traveling carriage, type-bars, keys to actuate the type-bars and locking means for said keys; of means for returning the carriage, and means acting through the medium of said locking means for rendering 'said carriage-returning means effective.

22. Ina typewriting machine, the combinatlon with a traveling carriage, type-bars,

-keys to actuate the type-bars, and means for locking said keys; of a motor to return said carriage, and means to eficct a driving connection between the motor and carriage, said means acting to move the locking means to key-locking position, and acting through the medium of said key-locking means to render said driving connection efiective.

23. In a typewriting machine, the combination with a traveling carriage, type-bars, and keys to actuate the type-bars; of a motor to return the carriage, connections from the motor to the carriage to return the latter key locking means, and means controlled from the carriage to render said keylocking means effective, and acting through the medium of said key-locking means to render efiective the connections from the motor to the carriage. V

2a. In a typewriting machine, the combination with a traveling carriage, type-bars, keys to actuate the type-bars, and means for locking said keys; of a motor to return the carriage, connections from the-motor to the carriage for establishing a circuit through.

said motor, and means controlled jointly by the carriage and motor to establish a driving relation between the motor and the car-' riage.

26. The combination, with a carriage; of

means for driving the carriage forward; an

electric motor for returning the carriage; a switch controlled by the carriage for closing the motor circuit; and means controlled by the forward-driving means for holding said circuit in closed position during the return of said carriage by said motor.

27. In a typewriting-machine, the combination with a carriage, of means for givingsaid carriage a step-by-step movement in letter-feeding direction, an electric motor for returning said carriage, a switch for closing the motor circuit, means to actuate said switch to close the motor circuit,,and

, me ans controlled by part of said step-bystep carriage-feeding means for maintaining said switch in closed position while the carriage is being returned, said means acting to open said switch after the completion of the return movement of said carriage.

28. In a type'writing machine, the combination with a carriage, of step-by-step feeding mechanism including carriage-propelling means and an escapement for controlling theletter-feeding of said carriage, an electric motor to return the carriage, a switch for closing the motor'oircuit, means for actuating said switch to close the motor circuit, and means operated by a part of the carriage-feeding mechanism for maintaining said switch closed during the return movement of the carriage, said escapement mechanism permitting said carriage to make a slight forward movement after its complete return, said forward movement, permitted by said'escapement, acting to break the 1notor circuit.

29. The combination, with a traveling carriage, an electric motor to return the carriage, and a switch in the motor circuit; of'

means operated by the carriage at the com pletion of its forward travel to close said switch; a spring drum for propelling the carriage 1n a forward direction; and a fraction ring carried by said drum and operated by the drum during the initial return movement of the carriage, to maintain the switch closed throughout the return travel of the carriage. a

' 30. The combination with a carriage; of

a spring drum for propelling the carriage in letter-feed direction; an electric motor to returnthe carriage; a switch in the m0- tor circuit; and a member carried bv said drum and having an arm to hold said switch in closed position, andthereby maintain said circuit closed, throughout the return movement of the carriage.

31. The combination, with a carriage; of a spring drum for propelling the carriage in letter-feed direction; an electric motor to return the carriage; a switch in the motor circuit; means for moving said switch into closed position; and a member carried by said drum and having an arm movable into engagement with said switch after the latter has been closed, tohold said switch in closed position, and thereby maintain said circuit closed, throughout the return movement of the carriage.

. 32. The combination, with a carriage; of a spring drum for propelling the carriage in letter-feed direction; an electric motor to return the carriage; a switch in the motor circuit; and a friction ring carried by said drum and having an arm to hold said switch in closed position, and thereby maintain said circuit closed, through the return movement of the carriage.

33. The combination, with a carriage; of a spring drum for propelling the carriage .in letter-feed direction; an electrlc motor mechanism including a set of vertical plunger-stops; a universal locking bar for said plunger stops; and means for automatically actuating said bar during the return travel of the carriage, to lock said plunger stops against operation.

In a machine of the class described, the combination, with a. carriage, and a motor to return the carriagc;' of tabulating, mechanism including a set of vertical plunger stops; a universal inching bar for said plunger stops; a ioelcslia'l't to which said bar is connected; and means for automatically rocking said shall during the return travel of the carriage. to actuate said bar and loch said plunger steps against operation.

30. in a machine 01" illt' lass des ri ed the comhinalioi with a carriage. and a motor to return the i-ai'i'iage; oi tahldat rig 'neehanislnincluding set oi \ri'ticai plum ger stops; a universal locking bar for said plunger steps; a sprin'gmotor forpropelling said carriage in a forward direction;

and means operated automatically by said. spring motor for actuating said bar during the return'travel of the carriage, to lock said plunger stops against operation.

37. In a machine of the class described, the combination, with a carriage, a motor for returning the carriage, and a switch in .the motor circuit; of a spring motor for propelling the carriage in a forward direction; tabulatmg mechanism; locking means ,fo'r said tabulating mechanism, to hold the same against operation; and means carried by said spring motor for actuating said locking means during the return movement of the'carrlage, the last-named means holding said switch closedduring such returnimovement of the carriage.

38. In a typewriting machine, the combination with a carriage, type-bars, keys for operating said type-bars, and locking means for said keys; of an electric motor. for returnin said carriage, andmeans operated throug the medium of. said key-locking means for closing the circuit through said motor.

39. In a typewriting machine, the combinationwith a carriage, type-bars, keys for operating said type-bars, and locking means for said keys; of an electric motor for returning said carriage,and carriage-operated means acting through the medium of said key-locking means to -'-close the circuit through said motor.

4 0. In a typ'ewriting machine, the combination with a carriage, type-bars, keys for operating said type-bars, andv locking means for said keys; of an electric motor "torreturning the carriage, means depending upon the operation of the motor to establish a driving relation between the motor and carriage, and means controlled by the carriage andacting through the medium of said keylocking means to control the efiectiveness of said first-mentioned means.

41. In a typewriting machine, the combination with a carriage, type-bars, keys for operating said type-bars, and locking means for said keys, of a normally stationary electric motor for returning the carriage, and

means acting through the medium of saidkey-locking means for establishing a circuit through said motor, said means also acting in conjunction with the motor to establish. a driving relation between the motor and the carriage.

' 42'. In a typewriting machine, the combination with a carriage, type-bars, keys for operatlng sa d type-bars, and locking means for said keys; or a normally-stationary electric motor for returning'the carriage, and means controlled by the carriage and acting through. the medium of said keydocking,

means for establishing acircuit through said motor, said means also acting through the medium of said key-locking means in conjunction with the motor to establish a driving relation bet-ween the motor and the carriage.

' 43. In a combined typewriting and computing machine, the combination with a carriage, type-bars, keys for operating said type-bars, and a locking bar for said keys; of a motor for returning the carriage, a link operated by the carriage and connecting said key-locking bar to move the same to keylocking position, and connections from said key-locking bar to control the motor to return the carriage.-

I 44. In a combined typewriting and computing machine, the combination with a carriage, type-bars, keys for operating said type-bars, and a locking bar for said keys;

' mally stationary electric motor for returning the carriage, means controlled by the carriage for establishing a circuit through said motor, means dependent upon the operation of the motor to establish a driving relation between the motor and carriage, and means controlled by the carriage for controlling the effectiveness of said first-mentioned means.

46. In a typewriting machine, the combi- 4 nation with a traveling carriage, of a normally stationary electric motor for returning the carriage, means controlled by the carriage for establishing a circuit-through said I motor, connections between the motor and carriage including a clutch, means controlled by the operation of the motor for actuating said clutch to connect the carriage with the motor, and means controlled by the carriage for controlling the efiectiveness of said firstmentioned means to actuate said clutch.

4 In a typewriting machine, the combination'with a traveling carriage, of a normaliy stationary electric motor, connections between the motor and carriage including a clutch, means controlled by the carriage for establishing a circuit through said motor,

and means controlled jointly by the carriage and motor for actuating said clutch to 0on1 nect the carriage with the motor.

l8. In a typewriting machine, the combination with a traveling carriage, of a norstationary electric motor for returning the carriage, means controlled by the caroperative connection independently of the riage for establishing a circuit through-said motor.

a "motor means dependent jointly upon the r 1 operation of the motor and the carriage to FREDERICK A establish an operative connection between WVitnesses:

the motor and the carriage, and means con- Y W. WESTPHAL, trolled by the carriage for breaking said 'TITUs H. IRONs.

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