US1356158A - Typewriting-machine - Google Patents

Description

A. G. F. KUROWSKI.

TYPEWRITING MACHINE.

APPLICATION FILED MAY 16; 1919.

Patented Oct 19,1920.

2 SHEETSSHEET 1.

A. G. F. KUROWSKI.

TYPEWRITING MACHINE.

APPLICATION FILED MAY 16, 1919.

Patented 0013. 19, 1920.

2 SHEETS-SHEET 2- UNITED STATES PATENT OFFICEl 'ALFRED F. KU'BOWSKI, OF BROOKLYN, NEW YORK, ASSIGNOR TO UNDERWOOD TYPEIVRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITING-MAOHINE.

Specification of Letters Patent.

Patented Oct. 19, 1920.

Application filed May 16, 1919. Serial No. 297,655.

To all whom it may concern:

Be it known that I, ALFRED G. F. KUROW- sin, a subject of the Emperor of Germany, or a citizen of Germany, but having taken out preliminary United States naturalization papers, residing in Brooklyn borough, in the county of Kings, city and State of New York, have invented certain new and useful Improvements in Typewriting-Machines, of which the following is a specification.

This invention relates to typewriting machines, and more particularly to tabulating mechanism for such machines.

The main object of my invention is to provide a tabulating device simple and effective in form and readily settable for different requirements.

The invention is illustrated as applied to a typewriting machine of the Underwood type. In the present construction, depression of the tabulator key will cause release of the escapement mechanism, and also serve both to move a column-stop bar at the front of the machine to a position to enable the column-stops thereon to cooperate with a counter-stop mounted on the front of the carriage, and to move a brake bar into engagement with a friction member supported on the front of the carriage.

In the present embodiment the movement of the column-stop bar is effected by rocking the shaft carrying said bar by means of a slotted arm fixed on said shaft, and a bent link connected at one end with the tabulator lever, and at the other end to said arm by means of a pin entering a slot of said slotted arm, and a forked or slotted end of said link embracing said shaft. Upon depression of the tabulator key the pin on the link will tend to move outward in the slot of the slotted arm, and such outward movement may be controlled by giving a suitable inclination to the slot in the upper end of the link. Provision is made of suitable spring means to return said slotted lever to normal position.

In order to facilitate the setting of column-stops in accordance with the indications of the pointer on a letter-space scale, the pointer is provided with an opening immediately over the column-stop bar when in normal position to enable insertion of a stop, and with guiding devices associated with said opening to insure proper positionin of said column-stops.

rovision is made of a pivotally supported cover normally extending over the column-stop bar and pointer, but cut away at its forward edge to enable passage of the pointer between the scale and the cover. he movement of the cover may be limited by a pin-andslot connection with the frame of the machine, and the cover may be held in raised or lowered position by a leaf spring fixed on the frame of the machine, and a suitably shaped cooperating member connected with the cover.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a diagrammatic side elevation, partly in section, of an Underwood typewriting machine with my invention applied thereto.

Fig. 2 is a side view in section, showing some of the parts in positions different from those shown in Fig.

Fig. 3 is a fragmentary perspective view of the tabulating mechanism at the front of the machine, the cover being raised.

Fig. 4 is a view showing the pointer, and so much of the column-stop bar and scale as is necessary to show the relation therebetween.

Upon depression of character keys 1, type-bars 2 will be swung upwardly and rearwardly, to bring types thereon in contact with a work-sheet on a platen 3 revolubly supported in a platen frame 4 mounted for movement in a carriage 5. Said carriage 5 is mounted on front and rear rails or bars 6 and 7, respectively, and is urged in one direction by a strap 8 and springdrum 9. In order to control the movement of said carriage 5 under the influence of spring-drum 9, a rack 10, pivotally supported on carriage '5 by means of arms 11, normally engages with a pinion 12 having a usual oneway connection with escapement wheel 13, which is controlled by the usual fast and loose dogs 14 and 15, respectively. Said fast and loose dogs are normally held in forward position, but are moved to the rear by means of a universal frame 16, which is struck by a heel 17 on a typebar 2 at the end of the printing stroke of the type-bar.

Vi hen a tabulating movement is desired, tabulator key 18 is depressed and acts through tabulator lever 19 pivoted on shaft 20 and urged to normal position by means of spring 21, to actuate link 22, arm 23, arm 24 and bent link 25 to rock lever 26 pivoted at 2'4", and thereby raise rack 10 from engagement with pinion 12 by means of a wheel 28 mounted on said lever 26. The mechanism so far described is well known in connection with the Underwood typewriting machines.

To connect lever 19 with the tabulating mechanism the front of the machine, provision is made of link 29 pivoted to lever 19 by means of a shouldered screw 30, and connected to a lever 31, by means of which a rack bar or column-stop bar 82 carrying column-stops 33 is moved into position to cooperatewith counter-stop 3 f mounted at the front of the carriage. Concomitantly with the movement of bar 32, a bar 35 is moved into contact with a friction device or pad 3'5 supported on the carriage im mediately above said counter-stop. The bar 35 and friction device 36 constitute means for controlling the movement of the carriage when the escapementmechanism is rendered ineffective.

In order to obtain satisfactory movement of the parts of the tabulating mechanism when actuated by a tabulating lever 19, lever 31 is provided with a slot 37 at its rar end, and link 29 is provided with a pin 38 having threaded engagement therewith and engaging in slot 37, and at its upper one with a forked portion embracing shaft 39 on which lever 31 is mounted. Rack bar 32 and bar are supported at one side of the machine by lever 31, and at the other by an arm 40 secured to shaft 39. A leaf spring 81 secured to lever 31 and en gaging rail 6 serves to return lever 81 and the ciated parts to normal position. It will be seen that depression of link 29 will tend to move pin 38 to the outer end of slot 37, and that such movement is controlled in accordance with the inclination of the slot in the forked end of link 29, the shaft 39 and the forked end of link 29 cooperating to effect a camming action.

The tabulating mechanism at the front of the machine is normally covered by means of a cover at pivoted at 12and 13 on the frame, the movement of the cover being limited by a pin-and-slot connection shown at the right of Fig. 3. l Vhen in closed position, the forward edge of cover 41 rests on the main frame at opposite ends of letterspace scale 44, and said covertl is provided at each end of its forward edge with projections 15 which serve to space the cover from the bar-carrying scale at to enable the PLSS passage therebetween of the tip of pointer 4:6 fastened to the carriage immediately above friction device 36.

Preferably at the right of the machine, cover ll is attached to a member 47, which serves to connect the cover with the pivot 13. Pivotal movement of member 47, and consequently of cover ll, is limited by suit able means, such as a pin e18 mounted in the frame and projecting into a slot 19 in member e7, said slot being concentric with pivot 43.

Provision is also made of a spring 50, supported at one end on the frame and having its free end in contact with member 47, the cooperating curved surface 51 of which is convex to such an extent that the central portion is at a greater distance from the pivot 13 than are the end portions, which are provided with notches 52 and 53, with which the bent end of spring 50 engages to hold the cover in closed and open positions, respectively. it will be seen that the structure just described will prevent rattling of the cover when in closed position.

Immediately above the position assumed by the bar 32 under normal conditions, the pointer 4-6 is provided iwith an opening 5% of sufficient size to enable insertion there through of a column-stop 33 held between the thumb and forefinger, and lugs 55 are provided at the front and back of said openi to serve as guides, by means of which the column-stops may be properly positioned on the columnstop bar. The clearance between pointer at; and bar 32 is such that no interference will result when thecolumn-stop bar is swung to rearward position.

Variations may be resorted towithin the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, 1 claim:

1. In a typewriting machine, the combination with a letter-space scale, of columnstops, a column-stop rack, a member including a counter-stop to cooperate with said column-stops, means to effect a relative traveling movement between said member and both said scale and said rack, a pointer to coiiperate with said scale secured to said member and having an opening there through above said rack, and guiding de vices positioned oppositely with reference to said opening, whereby a column-stop inserted therethrough will be positioned on said rack in accordance with the indication of said pointer on said scale.

2. In a typewriting machine, the combination with a traveling carriage, of a linespace scale at the front of the machine, and tabulating mechanism for said carriage in cluding a column-stop rack positioned be tween said scale and the front of the carriage, a pointer secured to said carriage and extending across said rack to cooperate with said scale, and guiding means associated with said pointer to direct a column-stop to a position on said rack in accordance with the indication of said pointer on said scale.

3. In a tabulator for typewriting machines, the combination with two members and means to effect a letter-feed traveling movement therebetween, of a letter-space scale on one of said members, a pointer on the other of said members to cooperate with said scale to indicate the relative position of said members, column-stops, a columnstop bar, adapted to receive said columnstops at letter-space intervals, extending beneath said pointer, means to prevent a letterfeed movement between said scale and said column-stop bar, and guiding means associated with said pointer whereby-a columnstop may be set on said column-stop bar in accordance with the indication of said pointer.

4. In a typewriting machine, the combination with a letter-space scale, of columnstops, a column-stop rack, a member including a counter-stop to cooperate with said column-stops, means to effect relative traveling movement of said member and both said scale and said rack, and a pointer to cooperate with said scale, said pointer having guiding means thereon to guide a columnstop into position on said rack in accordance with the indication of said pointer on said scale.

5. In a typewriting machine, the combination with a traveling carriage, of a letterspace scale at the front of the machine, a column-stop bar between said scale and the front of said carriage, a counter-stop on the front of said carriage, means to move said column-stop bar to enable cooperation of column-stops thereon with said counterstop, and a pointer on said carriage to cooperate with said scale, the configuration of said pointer being such as to enable a column-stop to be set on said bar at a point opposite the division of the scale indicated by said pointer.

6. In a typewriting machine, the combination with a traveling carriage, of tabulating means therefor comprising a rock shaft, a column-stop bar adapted to receive columnstops at letter-space intervals mounted on said shaft, a counter-stop on said carriage, and means for rocking said shaft to bring said bar into position to enable cooperation between column-stops mounted on said bar and said counter-stop, including a slotted arm mounted on said shaft, a tabulating lever, a link connected with said tabulating lever, a member on said link extending into the slot of said slotted arm, and cam means to determine the position of said member in the slot of said slotted arm.

7. In a typewriting machine, the combination with a traveling carriage, means urging said carriage in letter-feeding direction, and an escapement mechanism to control the movement of said carriage, of a rock shaft at the front of the machine, a rack supported on said shaft, column'stops adjustably positioned on said rack, a counterstop on said carriage, and means for swinging said rack into position to enable cooperation between said column-stops and said counter-stop, and to concomitantly release said escapement mechanism, including a slotted arm secured to said shaft, a bent link having a pin entering the slot of said slotted arm, anda slotted end to embrace said shaft, and a tabulating lever connected with said link. I

8. In a typewriting machine, the combination with a traveling carriage, of tabulating means therefor, comprising a rock-shaft, a column-stop bar adapted to receive columnstops at letter-space intervals mounted on said shaft, a counter-stop on said carriage, and means for rocking said shaft to bring saidbar into position to enable cooperation between column-stops, mounted on said bar, and said counter-stop, including a slotted arm mounted on said shaft, a tabulating lever, a link connected with said lever, having a member thereon extending into the slot of said slotted arm, and a forked end embracing said rock-shaft, said forked end being adapted to control the movement of said member in the slot in said slotted arm.

9. In a typewriting machine, the combination with a traveling carriage, of a letterspace scale at the front of the machine, a pointer on the front of said carriage to cooperate with said scale, a column-stop bar between said scale and the front of said carriage, column-stops mounted thereon, a counter-stop on the front of said carriage beneath said pointer, and means to move said column-stop bar into position to enable cooperation of the stops thereon with the counter-stop.

10. In a typewriting machine, the combination with a traveling carriage, of a letterspace scale at the front of the machine, a pointer on the front of said carriage to cooperate with said scale, a column-stop bar between said scale and the front of said carriage, column-stops mounted thereon, a counter-stop on the front of said carriage beneath said pointer, a brake device comprising a friction member on said carriage adjacent said counter-stop, and a brake bar extending across the machine, and means to move said column-stop bar into position to enable coo eration of the column-stops thereon wit the counter-stop, and concomitantly move said brake bar into engagement with said friction member.

11. In a typewriting machine, the combi nation with a traveling carriage and guid- 111g means therefor, including a front rail,- of tabulating mechanism comprising a rock shaft at the front of the machine, a columnstop bar supported on said shaft, columnstops on said column-stop bar, a counter stop on saidcarriage, a slotted arm secured to said rock-shaft, a link having a member thereon entering the slot of said slot-ted arm, and a cam-slotted portion to embrace said shaft, a tabulating lever connected withsaid link, and a leaf spring fixed on said slotted arm and engaging said front rail: tourge said rock-shaft to its normal position.

12. In a type-writing machine, the combination with a traveling carriage, of a bar fixed on the frame of the machine and extending across the front thereof, a letterspace scale on said bar, apointer on said carriage to cooperate with said scale, tabulating mechanism including a pivotally mounted column-stop bar lying between said carriage and said scale, column-stops thereon, a counter-stop on said carriage, means to move said column-stop bar into effective relation with respect to said counter-stop, a cover pivoted to said frame at its rear edge, and: means whereby the forward edge of said cover will be spaced from saidfixed bar to permit passage of the pointer there between. A

13. In a typewriti-ng machine, the combination with a travelingcarriage, of a bar fixed on the franie'of the machine and extending across the front thereof, a letterspace scale on said bar, a pointer on said carriage to cooperate with said scale, tabulating mechanism including a pivotally mounted column stop bar lying between said carriage and said scale, column-stops thereon, a counter-stop on said carriage, means to move said column-stop bar into effective relation with respect to said counterstop, a cover pivoted at its rear edge to said frame, means whereby the forward edge of said cover will be spaced from said fixed bar to permit passage of the pointer therebetween, and means for yieldingly holding.

said cover in open and closed positions.

14. In a typewriting machine, the combination with a traveling carriage and an escapement mechanism therefor, of a tabulator-lever, tabulator-lever-actuated means for releasing said carriage from the control of said escapement mechanism, a rock-shaft mounted at the front of the machine, a stopcarrying rack-bar, a friction bar supported by arms fixed on said rock-shaft, stop-carrying means, a friction member supported on the front of the carriage, and connections between said tabulator-lever and said rockshaft whereby, upon depression of said tabulator-lever, said rack-bar will be positioned with a stop thereon in position for engagement with a stop on said stop-carrying means, and said friction bar will be caused to engage said friction member.

ALFRED G. F. KUBOVVSKI.

Witnesses:

CATHERINE A. 'NEWELL,

JENNIE P. THORNE.

Images