US1356812A - Compactible typewriting-machine - Google Patents

Description

s. R. DE PUE.

COMPACTIBLE TYPEWRITING MACHINE.

APPUCAHON FILED JULY 2,1911.

htented Oct. 25, 192%.

3 SHEETS- SHEET I.

Patented 00. 26,1920.

3 SHEETS-SHEET 2- APP| .ICATION FILED IULV 2,1917- s; 1. DE PUE. Y COMPACHBLE TYPEWRITING MACHINE. APPLICATION FILED JULY 2,1917.

3 SHEETSSHEET 3.

$1 \WHH II I HEH/i/i/M Patented Oct. 26, 1920.

STANBEY 3. 3E PUE', F WASEIrlGION. DI$TRICT OF COLUMBIA, ASSIGNOR TO ,CQROZEA TYPEWRITER COMPANY. INC., OF GROTON, NEW YORK, A CORPO- RATIGN OF NEW YORK.

COZEPACTIBLE TYI'EWRITING-MACHINE.

massive.

"for convenience in transportation and storage, as more fully hereinafter set forth.

In the drawings- Figure 1 is a vertical. longitudinal sectional view of so much of a typewriting machine as is needful toillustrate my presentimprovements Fig. 2 is a detail perspective view of the vertically movable frame adapted to carry 20" i the platen carriage;

Fig. 3 is a perspective view in detail of the base frame; 7

Fig. 4: is a detail vertical sectional View through one of the vertical guides of the base frame; and l I Fig. 5 1s a plan view of a portion of the machine, the platen being broken away;

and i Fig. (dis a view partly in plan and partly in section of the ribbon-feeding and vibrating mechanism.

Referring to the drawings annexed by numerals, designates the main frame, on which are mounted in any suitable manner the key-bars 11, each key-bar being provided with a depending ear12 which is providedwith a pin 13 in its lower end, which engages the radial slot 14: in arm 15' jourf naled on a rock shaft 16 afi'ixed to the lower edges of the side-bars of the frame. Each of the arms 15 is provided with an upstandin: arm 17 which is connected by a rear wardly-extending link 18 to the heel of the type-bar 18 of the usual construction. The ty pe-bars are pivotally mounted 1n the usual manner in the type-bar segment 19. This nanner of connecting the key-bars to the type-bars is advantageous in that it enables the type-bar segment to be brought well for ward in the machine in order to provide space enough between the typesbar segment and the real-wall of the frame to receive Specification of Letters Patent. Patented Oct, 26, 1920.

Application filed July 2, 1917. Serial No. H8352. I

the platen carriage and connected parts when the mach1ne is compacted, as more iully hereinafter set forth.

At each side of the main frame is provided a pair of vertical guide ribs, 20 which are engaged by channeled legs 21 of a top plate or frame 22 which carries the usual platen carriage 23. This frame or plate 22 1s thus'made vertically slidable, and it is held in its adjusted-positions in any suitable manner, preferably 4 by springactuated latches 24, one of which is mounted in each of the legs 21 and is adapted to engage notches 25 in. the guide ribs 20, the engagement of the latches with the notches being preferably a frictional one, so that the movable frame may be raised or lowered by applying alittle effort thereto and also inorder that, whether the fraIne be lifted 'or lowered, it will automatically look at the de sired height. The lower notches 25 are'so located that when they are engaged by the 20, thus compacting the machine to the exof the frame upon thetent of movement guides.

In connection with the vertically adjhst-l able platen carriage frame, I have provided compactible (preferably telescoping) means for operating the carriage feed, the ribbon feed and the ribbon vibrator. Underneath journaled in a bearing 32 on the base and A consisting of a series of telescoping-sections" 32, so arranged that when the supplementalframe is lowered, these sections telescope into each other sufficiently to permit the frame to be'lo'wered the desired extent, thus avoiding any disconnecting of the carriazre-md ing parts when the machine compacted. The carriage feed pinion 31 engages a rack 33 mounted on the platen carriage and kept normally in engagement with the pinion by springs 34. This rack bar 33 is permitted a limited sliding IBGIZQIDGIHZ by means of inclined slots 35,

, manually drawn back to starting position through which pass pins 36, said slots in-- clining forwardly Attached to this rack bar is and toward the left of the machine. handle 37, by means of which the carriage is against the action of the usual spring 38.

a move rearwardly out of engagement with pinion 31. The ins 36 being rigidly affixed to the carriage and the slots being an ranged parallel to each other, the rack bar will be at all times in exact parallelism with the line of travel of the carriage. I

The ribbon 39 is carried by two spools 40 whose shafts are mounted on the supplemental frame 22 and are provided each with a ratchet wheel 41. These ratchet wheels are respectively engaged, Zfor rotation of the spoolshafts,-by pawl 42, each pawl being carried on the forward end of a rod 43 which is normally pulled rearwardly by coil-spring 44 inclos'ed in cylinder 45, the spring acting against a head 46 aflixed torod 43 and inclosed in the rear end of a cylinder 45. -'The two cylinders are connected by a bar 47, through which extend the rear ends of rods 43, each of said rods being provided at. its

rear end with a tappet 48. At a point behindcaxns 48, rock shaft 49 is journaled in'the frame 22, this rock shaft being provided with forwardlyextendingfingers 50 which engage said cams when the shaft is rocked to force the pawls forward.

Rock shaft 49 is rocked by suitable con nection with the universal bar 6. One arrangement for this purpose is illustrated; this arrangement consists of rearwardly-extending arms 51 affixed tov the rock shaft 49 and connected'to rearwardly-extending arms 52 carried by the universal bar 26, this connection consisting of an extensible rod composed of linked sections 53, these sections 53 being so connected together that when the supplemental frame 22 "is loweredto compact position, these sections slide upon each other to thus shorten the connection between arms 51 and 52. This sliding connection may be obtained in any suitable way; the way I have illustrated this connection is to provide the lower end of each of the upper sections with an eye 54 and have the ends of the adjacent sections extending loosely through said eyes and provided with a stop 55 at their upper ends. It will be observed that when the machine is extended for use, the sections 53 will bein their extended position, 6., with their eyes 54 in contact with the adjacent stops 55, so that upon depression of the universal bar 26-by' any one of the key-levers, the rock shaft 47 will be opera-ted, thereby swinging cam-arms 50 upwardly and thus forcing forwardly that oneof the pawls 42'which is in operative position with respect to its operating cam 50.

eyes 56 which are arranged on the under side of the supplemental frame are laterally enlarged, as shown in Fig. 6.

To vibrate the ribbon, I attach to the shaft 49 a forwardly-extending arm 57 which en gages under the vertically-slidable ribbon guide 58 of the usual construction.

For the sake of compactness, I hold each key-lever l1 normally up by means of a flat spring 59- affixed to the rear part of the base frame and arranged to press upwardly against the under side of the key-levers. The side wall of the base frame, at points between each pair of guide-ways 20 is cut away to form a large notch or spacein the upper edge of the side wall, to thereby permit the platen'or the carriage, or both, to project beyond the side walls of the base without in the least interfering with the collapsing of the machine. The case shift in this type of' machine may be obtained by either ralsing and lowering the supplemental frame, or raising and lowering the type-bar segment 19; I prefer the latter, and for this purpose the type-bar segment (together -with its usual type-bar rest 60'to which it is connected by a suitable bar 61) is mounted to slide vertically on suitable guides 62 on the base. To give the type-segment (which. extends upwardly at its end as usual) clearance when the supplemental frame is lowered to collapsed position, said frame is open at its front side, forming forwardly-projecting Side arms The latches 24 are each normally projected by means of a,coil-spring 64 and the tension 1 of this spring is regulated by means of' screws 65, wheiiiby the desired frictional engagement of the latch with the guide-rib '20 and its notches may be varied from time to time as the springs weaken .or the latches Wear. Y J

The shifting of the type-bar segment up and down can be accomplished without dis turbing the position of the type-bars with reference to the segment or disturbing the key-levers by reason of the link connection ld betwee'n the key-levers and the type-bars.

The nature and scope of the invention having been thus indicated and its preferred embodiment having been specifically described, what is claimed as new 1s:

1. Ina typewriter of the class set forth, the combination of a base frame carrying the key-levers, type-bars, a vertically movable supplemental frame supported on said base and carrying the platen carriage, and extensible ribbon-feeding means partly mounted on the base and partly mounted on said supplemental frame, for the purpose set forth.

2. In a typewriter of the class set forth, the combination of a base frame carrying the key-levers, type-bars, a vertically movable supplementalframe supported on said base and carrying the platen carriage, and extensible ribbon-vibrating means partly mounted on the base and partly mounted on said supplemental frame, for the-purpose set forth.

3. In a collapsible typewriter, the combination of a base-frame provided at each side with a pair of upstanding guides, a space being left between each pair of guides,

and a supplemental frame mounted to slide on said guides and provided with a trans versely-slidable platen carriage arranged in *ulinement with the spaces between the guides, for the purpose set forth.

4;. In afcollapsible typewriter, the cornbination with a base-frame, a supplemental frame vertically-slidable on the base-frame and carrying a platen carriage and provided with a pair of forwardlyextending arms, a space-being provided in the top-plate of the frame between said arms, a type-bar segment mounted on the base in vertical aline -ment with the space between said arms, typebars mounted on said segment and key-levers operatively connected to actuate the type bars.

' 5. In a collapsible typewriter, a base carrying the type-bars and means for operating them, a supplemental frame adapted to collapse vertically into said base and carrying a platen carriage, and resilient frictional devices for holding the supplemental frame in either its extended position or its colmuchine is compacted to reduce the vertical dimensions of the machine without increasmg its fore and aft dimensions, and extensible ribbon-feeding means partly mounted on the base and partly mounted on said supplemental frame.

7. In a compac'tible typewriter, the combination of a base frame carrying the keylevers and printing devices,.a supplemental frame carrying the platen carriage and mounted on the mainframe so as to, slide rectilinearly down into the-same when the machine is compacted to reduce the vertical dimensions of the machine without increasing its fore and aftdimensions, and extensible ribbon-vibrating means partly mounted on the supplemental base and partly-mounted on said supplemental frame, y

8. In a compactible typewriter, the combination of a base frame carrying a type seg' ment and printing ins'trumentalities, a sup iplemental frame mounted on the base frame so as to drop down behind said segment, said suppelm'ental frame carrying a platen carriage and being provided :also with a pair of arms projecting forwardly at either side of the segment, a ribbon-spool journaledon the .foi'ward end of each of these arms, and a platen carriage supported on the supple-.

mental frame to move therewith from a normal position above and at the rear ofthe type segment to a-lower position at the rear" of the segment when the machine is collapsed, said supplemental frame having forwardly extending rigid portions at opposite sides thereof movable downwardly at the ends of the type segment when the machine is collapsed, ribbon spools mounted on said forwardly extending portions of the supplemental frame, collapsible carriage feeding mechanism mounted partly on each'of said frame parts, and collapsible ribbon feeding meehanlsm mounted partly on each of said frame parts, said carriage feeding mechamsm and ribbon feeding mechanism being gperatively connected with the universal This s ecification si ned this secon I of July if. 11 1917. d-day STANLEY R. DE PUE.

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