US1251054A - Type-writing machine. - Google Patents

Description

A. G. F. KUROWSKI.

TYPE WRITING MACHINE.

APPLICATION FILED AUG-9. 1M3.

1,251,054. Patented Dec. 25,1917.

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' INVENTOR 904mm A. e. F. KUROWSKI.

TYPE WRITING MACHINE.

APPLICATION FILED AUG-9,1913.

1,251,054. Patented Dec. 25,1917.

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WITNESSES 0g A ORNEY A. G. F. KUROWSKI.

TYPE WRITING MACHINE.

APPLICATION FILED AUG-9, 1913. 1,251,054. Patented Dec. 25,1917.

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UNITED STATES PATENT OFFICE.

ALFRED G. F. KUROWSKI, OF BROOKLYN, NEW YORK, ASSIGNOR TO UNDERWOOD TYPEWRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Application filed August 9, 1913. Serial No. 783,860.

To all whom it may concern.-

Be it known that I, ROWSKI, a citizen of the United States, residing in Brooklyn borough, city of New York,-in the county of Kings and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification. v My invention relates to tabulating mechanism adapted for use with typewritlng ma-' chines, and'more particularly to mechanism in which a number of sets of tabulator stops are provided, and in which the several sets may be selectively brought into operative position and the individual stops in each set selectively projected to cooperate with counter stops.

It is customary to provide a single setof column stops, mounted on the carriage, to be selectively projected into position to engage counter stops on the machine frame,

and thereby stop the carriage at column pok sitlons corresponding to the projected stopsu With such an arrangement, the projected stops must be returned to inoperative position and a different selection of stops projected .each time the form of work-sheet or the character of the work is changed.

A feature of the present invention is the provision of a plurality of sets of stops, each set adapted to be brought into cooperative relation with the counter stops, and the individual'stops of each set adapted to be selectively brought into operative position, whereby each set of stops may have a different selection of stops set for a different form of work-sheet, or a different character of work, thusavoiding the necessity of pro jecting a new selection of resetting stops each time the form of work is changed.

In one form of the invention, each set of column stops is mounted in a rack bar supported on and extending longitudinally of the carriage, several rack bars being mounted for rotation about a common axis, whereby any set of stops may be brought into position to coiiperate with counter stops on the machine frame. The counterstops may comprise a series of decimal stops 1n the form of vertical key-actuated bars, each ALFRED G. F. KU- A .of a rack bar and movable into the path of a projected column stop, and each operable to release the carriage from its escapement mechanism and permit it to move forward to a position determined by the projected stop. The column stops may be selectively pro ected into the path of the counter stops by means of a key operating through intermediate mechanism to project any stop that is brought into a predetermined position by the travel of the carnage.

The key for projecting the column-stops is also utilized for returning them to inoperative position. To-this end the key has a limited range of movement for setting the stops, and operates during such movement to swing a pawl into position to engage and project a stop,'the'movement 'ofthe key being limited by a pivoted latch. The key maythus be operated repeatedly to project any deslred stops corresponding to the positions of the carriage when the key is operated To return the stops of a set, said latch is retracted to permit the further depression of the stop-setting key, which thereby releases the stop-setting pawl and at the same time lifts a cam into' the path of the projected stops, whereby-the travel of the carriage will return thevstops to inoperative position.

The several stop-carrying racks may be connected to rotate as a unit about an axis parallelwith the platen, and'may be held with any desired set of stops in operative osition by means of a sprmg detent engagmg the rack-carrying members.

Other features and advantages will here: inafter appear.

In the accompanying drawings,

Figure l'is a sectional elevation view of an Underwood typewriting machine having tabulating mechanism constructed in accord-.

ance with the principles of my invention.

Fig. 2 is a fragmentary view'of a portion stops carried thereby.

Fig. 3 is a perspective view showing particularly the stop-setting and returning mechanism. j

Fig. 4 is a part' sectional elevation View of the same, but with the stop-setting key moved into position to project a stop.

Fig. 5 is a similar view of a portion of the mechanism shown in Fig. 4, after the stop-setting key has been fully depressed to release the stopprojecting pawl and lift the stop-returning cam into operative position.

Fig. 6 is a fragmentary elevation view of the stop-setting and stop-returning mechanism, the position of parts corresponding to Fig. 5. i

Key levers l fulcrumed on a rod 2 are connected to bell cranks 3 to actuate upwardly and forwardly striking type-bars 4 to move the types 5 into position to print against the front face of a rotary platen 6. The platen is mounted in a traveling carriage 7 running on a rear guide rail 8 and a front guide rail, not shown, the carriage being driven by a spring motor 9, and its movement controlled by an escapement mechanism comprising an escapement wheel 10 and cooperating pawls 11. An escape ment pinion 12 rotating-with the pinion 10 is in mesh with a rack bar 13 which may be carried by arms 14 pivoted at 15 to the carriage, the rack bar-being releasable from the pinion 12 by a hand lever 16.

Each type-bar has a heel 17 to strike a universal bar 18 operatively connected to the escapement pawls, whereby the latter are operated, and permit the carriage to move forward a letter-space distance each time the type-bar is actuated- The column stops 19 are arranged in sets, each set being mounted in a rack bar or supporting memberv 20 formed with a seriesof transverse openings 21 in which the stops 19 are slidable into and out of operative position. The stops are yieldably held in either of said positions by spring detents 22, each of which is adapted to engage either an innor notch 23 to hold the stop in retracted or inoperative position, or an outer notch 24 to hold the stop in projected position. The notches are preferably V-shaped and act as cams so that the spring pressure of the detents assists inmoving the stops to either position of adjustment. The spring detents 22 are preferably arranged alternately von opposite sides of the stops, thereby providing more room for the detents and providing a better mechanical construction. A rod 25 may extend through elongated openings 26 in the sto s to prevent the lat-. ter from becoming accidentally displaced or withdrawn from the bar, at the same time permitting adjustment of the stops. Each stop 19 projects laterally beyond the edge of its rack bar, and has an upwardextension 27 adapted to be brought into the path of a pawl for projecting the stops. A cover; plate 35 on each rack bar extends downwardl over the sides of the rack bar and covers the openings containing the spring detents, thereby preventing displacement of the detents and their springs.

secured to a shaft 29 journaled in brackets 30 and 31 secured to bracket arms 32 and 33'at the ends of the carriage.

- It will be noted that the inner faces of the rack bars or the cover plates 35 thereon meet along their edges to form a square passage or compartment 34 through which the shaft 29 extends, and of sufiicient size to accommodate the inwardly projecting ends of the stops. Said compartment being entirely closed, serves to protect the stops and their spring detents from dust and dirt.

A hand wheel 36 on the end of the shaft 29 serves to rotate said shaft and with it the stop-carrying bars 20, all of which are symmetrically disposed around the shaft and rotate with it as a unit to'selectively bring the several sets of stops into a position directly over a set of counter stops 37 movable into the path of the projected column stops 19.

The counter stops 37 are in the form of vertically-disposed bars or plungers mountedfor vertical movement in a frame 38 fixed to the machine frame. These counter stops 37 which may comprise a series of decimal tabulator stops, are actuated by levers 39 mounted on a pivotrod 40 and provided at their forward ends with tabulator keys 41. Each counter stop 37 is formed with a ledge 42 on which bears a universal bar 43 connected to a rock shaft 44 having an arm 45 connected through a link 46 to a lever 47 pivoted at 48 and provided at its forward end with a roller 49 beneath the rack bar 13, whereby when a tabulator key ,41 is depressed to project a counter stop 37, the rack 13 is lifted and releases thecarriage from the escapement mechanism, permitting the carriage to run forward until arrested by a projected column stop striking the projected counter stop.

The column stops are selectively set or projected'to operative position by the following mechanism: A stop-setting key 50 on a lever 51 fulcrumed on the rod 2 is connected through a link 52 to a rock arm 53 on a rock shaft 54 on which is a second rock arm 55, connected through a link 56 to a lever 57- pivoted at 58, said lever at its 0pposite end being pivotally connected to an actuator 59 in the form of a vertically movable bar. The bar 59 is formed with an opening 60 through which extends a' guiding rod 61, onthe frame 38, said rod serving to limit the throw of the actuator 59 and also to guide it during its vertical movement. Adjacent the upper end of the actuator 59 is a stop-setting pawl 62 pivoted at 63 to a bracket 64 and normally held in its vertical or retracted position,- as shown in Fig. 1, by a spring 65. The pawl 62 is operated by a pin 66 on the upper end of the actuator 59, said pin normally engaging beneath a heel 67 of the pawl, as shown in Fig. 1.

When the stop-setting key 50 is depressed, it operates through the parts 51 to 57, to lift the actuator 59 to an intermediate position, as shown in Fig. 4, thereby swinging the pawl 62 to/ a substantially horizontal position, the outer end or toe of the pawl during such movement engaging whichever stop 19 lies in its path, and thus projecting said stop, as shown in Fig. 4. When the stop-setting key 50 is released, it is returned to normal position by a spring 68, and the several parts operated by the key, up to and including the pawl 62, are restored to initial position. The carriage may then be moved to a new position and the key 50 again actuated to project another column stop. In this way any desired stops in a set may be projected to operative position.

The stops having been thus set for any particular form of work sheet, or for any particular character of work to be done, the tabulator mechanism is used in the'usual manner. That is, assuming the work-sheet to be in position on the machine, and it is desired to bring the carriage into position for printing in the first or lefthand column for which a stop is set, a decimal tabulator key 41 is depressed, thereby bringing the printing point on the carriage to said column and to the particular decimal position in the column corresponding to the depressed decimal key. In like manner, by repeatedly operating the decimal tabulator keys, the carriage is brought successively to the several columnar positions for which the stops are set.

If it is desired to temporarily employ a new set of column stops without interfering with the set that has been in use, so that the latter may again be used without the necessity of resetting its individual stops, asec- 0nd rack bar 20 is brought over the counter stops by rotating the hand wheel 36. The second rack bar having thus been brought into operative position, the stops thereon are selectively projected in the manner heretofore described, the stops being selected in accordance with the form of work-sheet or the character of work in hand. Each set of stops may thus comprise a selection of individual stops independently set for a difierent form of work, and said stops may remain set indefinitely, and may be brought into operative position at any time by merely rotating the hand wheel 36 to bring them over the counter stops.

The rack bars 20 are held in adjusted position by means of a spring detent comprising an arm 69 pivoted at 70 to a bracket arm 71 which may be a continuation of the bracket 31, said arm 69 carrying at'it s free end a detent roller 72 held by a spring 73 against the plate 28, the latter being provided with cam recesses 74 in which the roller 72 seats to hold the racks in adjusted position.

When it is desired to retract the projected stops of any set, the actuator 59 is projected to its extreme upward position, as shown in Fig. 5, to actuate a resetting cam '75. To permit this operation of the actuator 59, a latch 76 pivoted at 77 and having a hook or projection 78-, normally held by a spring 79 in the path of the lever 51, is withdrawn by depressing a finger-piece 80 on the latch so that the stop-setting key 50 may be depressed a sufficient distance to "fully project the actuator 59. The initial upward movement of the member 59, of course, swings the pawl 62 inward to the Fig. 4 position, as already described, but the continued movement of the actuator carries the pin 66 beyond the pawl, allowing the latter to snap back to the Fig. 5 position where it cannot interfere with the stops 19. During-this final movement of the actuator 59, a lug 81 thereon strikes the cam 7 5 which, as shown, is in the form of a lever pivoted at 83 to the frame 38 and having its upper surface inclined or cam-shaped, so that when thus lifted to the Fig. 6 position, it lies in the path of the projected stops 19 whereby during the travel of the carriage (usually its return movement). said stops ,are carried along the cam and.forced inward and snapped to their retracted or inoperative position. A returning spring 82 is connected to the lever 75.

During the upward movement of the actuator 59, the front wall of the opening 60 bears against the rod 61, being held in such position by a leaf spring 84, thereby guidmg the actuator and holding it up to the pawl 69;, so asto insure the actuation of the latter, the spring 65 being weaker than the spring 84 to insure the movement of the pawl to the Fig. 4 position, the spring 84, however, permitting the actuator to yield in a forward direction sufficiently to slip past the pawl when moved to the Fig, 5 position.

It will be noted by reference to Fig. 4 that when a stop 19 is projected it is moved downwardly a short distance out of contact with the pawl owing to the spring detent 22 engaging the V-shaped notch 24 in the stop and camming the stop downwardly. As a result, the pawl 62 is permitted a slight additional downward movement about 'its pivot as the actuator moves upwardly from the Fig. 4 position toward the Fig. 5 pos tion, thereby allowing the pin 66 to slip past the pawl without suflicient pressure on said pin to move the actuator away from the rod 61. This results in a smoother and easier action of the stop-setting key 50.

Variations 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. In a tabulatin mechanism for a type- Writing machine, t e combination with a carriage, of a plurality of sets of stops for controlling said carriage, a counterstop, said sets of stops being selectively movable to operative or inoperative position with respect to said counterstop, each stop also being individually projectable, and key operated means for selectively projecting any individual stop ofifiany set when said set is in cooperative relation with the counterstop.

2. In a tabulating mechanism for a type- Writing machine, the combination with a carriage, of a plurality of sets of stops for controlling said carriage, a counterstop, said sets of stops being selectively movable to operative or inoperativeposition with respect to said counterstop, each stop being also individually projectable, and keyoperated means for selectively projecting anv individual stop of any set when said set is in cooperative relation with the counterstop, said key-operated means normally in position to permit free adjustment of any set of stops from operative to inoperative position with respect to the c ounterstop.

3. In a tabulating mechanism for a type writing machine, the combination with a carriage, of a plurality of sets of stops for controlling said carriage, a counterstop, said sets of stops being selectively movable to operative or inoperative position with respect to said counterstop, each stop being individually projectable, and keyoperated means for selectively projecting any individual stop of any set which is in coiiperative relation with the counterstop, said key-operated means including a pivot pawl normally in position permitting free movement or" said sets of stops from, operative to inoperative position with respect to said counterstop, said pawl swinging on operation of its key to engage and set any stop which is in operative relation to the counterstop.

4. In a tabnlating mechanism for a typewriting machine, the combination with a carriage, of a plurality of sets of stops for controlling said carriage, a key-operated stop-setting device, means being provided for relative adjustment between said stopsetting device and the sets in said plurality, to enable said stop-setting device to select and project stops in any set, and means cooperable with the projected stops in any set for arresting the carriage.

5. In a typewriting machine, the combination with a carriage, of a set of tabulator stops thereon, a stop-projecting device for selectively projecting said stops. to operative position, a device for returning the stops to inoperative position, and a single key operable when moved from its normal inactive position to an intermediate position, to opcrate the stop-projecting device, and when moved in the same direction beyond said in- '7. In a typewriting machine, the combination with a carriage, of a set of tabulator stops mounted thereon, a stop-setting device, a stop-returning device, a key operable when moved to one position to actuate thestop-setting device and when moved to another position to actuate the stop-returning device, and a latch governing the positions to which the key is moved.

8. In a typewriting machine, the vcombination with a carriage, of a set of tabulator stops carried thereby, a device for selectively projecting said stops, a key operable when moved to an intermediate position to actuate said device, a latch normally in position to prevent the operation of the key beyond said intermediate position, a. stop-returning de-. vice, and connections to said key for operatmg the stop-returning device when the latch is retracted and the key moved to its fullest extent.

9. In a typewriting machine, the combina tion with a carriage, of tabulator stops thereon, a spring pawl, a key, an actuator operated by the keywhen the latter is depressed to an intermediateposition to swing said pawl and project a stop, and a resetting device for said stop moved by said actuator into operative positionwhen the key is fully depressed. I

10. In a typewriting machine, the combination with a carriage, of a plurality of stop-supporting devices mounted on the carriage, a set of tabulator stops carried by each of said supporting devices, a stop-projecting pawl, said supports being individually movan into operative relation to pawl, a

" key operable when moved to one position to actuate said pawl and thereby selectively project the stops of the support whlch is in operative position, and a resetting device actuated by said key when moved to anotherposition.

11. Ina typewriting machine, the combination with a carriage, of a set of tabulator stops thereon, a stop-projecting device for selectively projecting said stops to operative position, a device for returning the stops to inoperative position, a single key for operat ing both of said devices, and a latch to limit the movement of the key to a position in which the stop-projecting device only is operated, said latch releasable to permit the key to operate the stop-returning device.

12. In a typewriting machine, the combi nation with a carriage, of a set of tubulator stops thereon, a stop-setting device, a stopreturning device, a key operable when moved to an intermediate position to actuate the stop-setting device and when moved beyond said position to actuate the stop-returning device, and a latch to form a stop for the key when the latter is at said intermediate posltion, said latch being releasable to permit the key to actuate the stop-returning device. 13. The combination with a type-writing machine comprising a carriage, of tabulating mechanism comprising a plurality of stopsupporting bars extending in the directionof the carriage travel, a set of stops on each of said bars, a counter-stop, said bars mov-.

able to brin said sets selectively into co-v operative V relation to the counter-stop, a stop-setting pawl, said pawl and sets of stops relatively movable by the carriage travel to bring the Stops of a set successively into position to be projected by the pawl, a key-operated actuator for said pawl, said actuator operable when the key is moved to an intermediate position to actuate the pawl and thereby project a stop to operative position, a latch to prevent said key from being moved beyond said intermedate position, means for releasing said latch and permitting further movement of the key to a final position, and a stop-restoring cam moved-to operative position by said actuator when the key is moved to its final position, the pawl being released from said actuator when the key is moved to its final position, whereby the stops may be restored by said restoring cam during the travel of the carriage.

14. In a typewriting machine, the combi- .for projecting said stops, a key, an actuator operable by said key when mowed to one positlon to actuate said pawl, the stops having projections which are successiyely brought during the travel of the carriage into position to be engaged by said pawl whereby the stops may be selectively projected, and means operated by said actuator when said key is moved to another position, to return the stops, said pawl being freed from the con-' trol of said actuator when the key is moved to stop-returning position.

16. In a typewriting machine, the combination with a carriage, of a set of tabulator stops, a support for said stops, a pawl mounted on the machine frame for projecting said stops, a stop-projecting key operative when moved to an intermediate posititon to actuate the pawl, and means operated bysaid key when the movement thereof is continued beyond said intermediate position, to return the stops to inoperative position, said pawl being taken out of the control of the key when the latter is moved beyond said intermediate position.

17. In a typewriting machine, the combination with a carriage, of a plurality of stop supports mounted on the carriage, a

set of stops on each support, said supports being selectively movable to bring the stops thereon into operative position, a counterstop, a key operable when moved to one position to project the individual stops of any set to cooperatewith the counter-stop when such set has been brought by its support into said operative position, and a device operable by said key when the latter is moved to a dlfferent position, to restore the stops to inoperative position on their support.

ALFRED G. F. KURGWSKL Witnesses: F. E. ALEXANDER, E. A. RENNm.

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