US1677210A

US1677210A - Typewriting machine

Info

Publication number: US1677210A
Application number: US520419A
Authority: US
Inventors: George F Rose
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-12-06
Filing date: 1921-12-06
Publication date: 1928-07-17
Anticipated expiration: 1945-07-17

Description

July 17, 1928.

GIF. ROSE TYPEWRITNG MACHINE "Fired nec. e. 1921 2 shuts-Sheet 1 WN. ww

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rlNg/ENTOR. 620259646220136 July 17, 19m

G. F. ROSE TYPEWRITING' MACHINE .Filed Deo. e. 14921 2 Sheets-Sheet 2 4 eoyemmgm 'l ATTORNEY Patented July 17, 1928.

:N I TED S T ATES TYPEWRITING MACHINE.

Application yfiled December 6, `1921. ,Serial 110.520,41),

This invention relates :to typewriting machines and more particularly to the variety employing;lr a carriage havin-g a letter ing, feeding movement, one object ot the invention being `to provide an improved machine of this character with etlicient means torlocking the `carriage `and its associated parts against inadvertent strain or moveinentuand possible injury through impacts or violent movementsoccasioned `for ei;- ample during the transportation of the machine. y

Another Objectis 4to provide a machine of this type with means for not `only locking the carriage against movement but also for disconnecting vthe mechanism controlling vthe feeding niovement of the carriage trom the latter and thus more eti'ectively protecting' the mechanism against injury during `bodily movement ot the fmachine.

A `further object is the provision in conjunction witsh a portable type of machine or' the above description fand with' the. casing for :transporting the same, .of means operated automatically by the closing or' the casing, tor locking the carriage in position and disconnecting the feeding mechanism therefrom tor the purposesset forth.

Still aurther object is the provision of improvements of the. character specified comprising but few parts of simple and ei lective construction and mode of operation, which can be readily applied, and ot a ceinparatively loW cost. "'lhe invention further .consists in a novel arrangement'oi the vtrions parts pf the machine. whereby an eX- ccedingly small and flat machine oit the noni'olding type is provided having pivoted type bars arranged to strike on the upper front quarter .of the platen, and also contempla-tes the provision ot' a simple, compact and etticient construction and arrangement et the carriage escapen'ient and the universal bar mechanism for actuating the same. 4To these and other ends the invention resides ineen tain improvements and combinations ot parts all as Will hereinafter be more fully described, the novel features being pointed out inthe claims at the end ot the specifica tion. y

In the drawings:

Figure 1 is a rear elevation. partly broken away, of a typewritingmachine embodying the present invention;

Figure 2 isa sectional elevation train lront Eto rear of the same, substantially on the line 2n-2fl o1' Figure 1; and

Figure 3 is a view similar to Figure 2 showing the partshowever in dilferent po- .sitions Certain novel features oiE vthe machine illustrated form the subject matter of my copending` applications, Serial No. 523,317, tiled December 19, 1921 and Serial No. 521,221, tiled December l9, 1921.

iiinilal reference numerals throughout the several views indicate the same parts.

The embodiment `ot the invention selected for the purposes of fthe ,present disclosureto illustrate the principles involved anda preferred practical application ot' the same, comprises a main trame indicated `generally at 10, of `the usual or any suitable construction, carrying a supporter bridge 11, Figure 2, for lthe key levers shonf'n lat 12. The latter have pivotally connected with their rear ends links 13 the other ends roti which are pivotally connected with type. bars 14. The maintrame carries also a transverse supporting` Wall or plate 15 on which is vfixed a bracket 16 .supporting` ythe rear end-s ot' the type lbars for pivotal movement about lan axis 17. The novel Vhanger bracket 16 for supporting the usual arcuate pivot wire or bail 1.7 is formed and secured to member or plat-e las shown and claimed in my cie-pending application Serial No. 523,317, and the novel key lever bridge is formed and mounted in the frame as shown and `claimed in my application Serial No. 521,227 above referred to. rilhc plate 1.5 is inclined upwardly and rearwardly so that ythe pivot wire cr bail 17 Will lie in a correspondingly inclined plane With the lowest point thereof at approximately the mean level et' the key 'levers 12,wthus permitting,` the bars to entend upwardly and forwardly when at rest Without increasing the height of the machine and attending' space below the level of the bars ttor portions of the key levers and for =conmeeting linkage between lthe key levers and type bars. The key levers have dmvnwardly and rearwardly inclined portions sabstantially parallel with the bars, said pertions ofthe central levers lying closely below the central `bars and extending close to the ibase of the main frame at the rear ends of the levers. t

On the upper rear portion of the main frame is mounted'avvork carriage indicated generally at 18 supporting the usual platen roller 19 on which the work is carried. At 2O is indicated a ribbon supporting and feeding means and at 2l is a guide 'for the ribbon adjacent the printing point. t will be observed that the work or platen carriage and the platen thereon are supported above and to the rear of the inclined type bar supporting means z id at a much lower level than is usual in visible writing machines of the swinging bar type, the main frame l() being quite low or liat with its highest point approximately level with the rear or highest bank of keys carried at the forward ends lof the system of foroand-attextending key levers 'lt will also be observed that the ribbon supporting and feeding means is located forward of the segment plate, in the rear of the free ends of the type bars, and between the horizontal levels ot' the uppermost point ot' the platen and the lowern'lost point of the :trame so as not to increase the height of the machine and so as to occupy the free space afforded within these bounds by the general arrangement oli' the adjacent parts and devices. v

The carriage is supported on the main frame for longitudinalword-spacing, ii'eeding movement by means ot the usual or any suitable construction comprising, for example, the usual guide rails Q1 movable over abcd plate `3l carried by the usual shift frame (not shown) movable on the main frame to each printing case, which construc tion, therefore. requires no detailed description herein. The carriage is moved or fed by suitable motive means such as a spring drum indicated generally at Q2, Figure l. and including a pulley 23 on which is wound a flexible element (not shown) connected with the carriage as well understood in the art. The feedingmovement olI the carriage produced by the springinotor is controlled by an' cscapement or rack and pawl means` con prising a rack bar Q on the carriage with which cooperate a pair of pawls 26 and 27. It will be noted that the pulley and spring drum. and also the escapement mechanism comprising the rack and the pair oi pawls or dogs cooperating therewith, are rall arranged in the space afforded within the rear part `of the main frame between the segment member or plate and the rear wall of the frame and between the lower part ot the platen carriage andthe base of the main farne. and that the lower part of the earriage and the bed plate 3l upon which it is guided are relatively close to the level of the upper edge of the plate l5 and the rear bank of keys and support the platen at a low point in position to be struck by the type bars after said bars have been turned on their pivots from upwardly andforwardly inclined normal positions substantially at right angles to the plate to upwardly and rearwardly inclined printing positions substantially parallel with the plate. Pawl QG is pivotally supported at its lower end on a spindle or screw 28 carried between spaced ears 2S) on a bracket 30 depending from the carriage bed plate 31. Pawl 2T is pivotcd on pawl 26 as at 32 and pawl 26 has a laterally projecting arm 33 to which is fixed one end of a tension spring Sil the other end ol. which is fixed to a bracket 35 extending rearwardly from bracket 30. This sprinp; serres to maintain the pawls in the position shown in Figure with pawl :27 in engagement with the carriage rack. These pawls are connected by spring and stop means or otherwise to provide the form of escapement well known in the art, being moved 'forwardly and back- 'ardly to bring them alternately into engagement with the rack and to permit the latter and the carriage to more. tooth by tooth under the actuation of its spring motor. The means tor so moving the pawls comprises in the present instance a bell crank lever l pivoter] at il? on a bracket itl extending rearwardly Yl'rom the transverse wall l5. One` arm of this lever is positioned for engagement with the lateral arm 33 of pawl 26 and the other arm of the lever carries an adjus-table contact. screw 38 for engagement with an arm 39 lifted on a rod 4;() pivotally supported at its ends in don-'nwardly and rearwardly extending brackets 41 on wall l5. 'lhe pawl engaging arm of lever 3() extends upwardly behind the escapement mechanism to a point` close to the carriage bed while the screw-carrying arm ot' said level' and bracket arm 38 extend under a part of the escapement mechanism. Rod has iixcd thereon also a pair ot upwardly and rearwardly extending and transversely spaced arms 42 having at their upper ends a loose connection with the roar ends oi downwardly and rearwardly extendingr side arms del; sliding); in openings in wall l5 and carryingr in front of the latter a sector l5 so positioned as to he struck by the type bars in thc movement oli the latter to printing position. The sector Lland side arms Llll constitute a universal means or har guided and supported entirely on plate l5 for oblique movement substantially at right angles to the plane of said plate and the type bar pivots. the arcuate member 45 of the universal bar lying close to the plate and being located closelrv above and curved about the pivoted ends of the system of type bars supported on the plate for actuation by the heels of the type bars. Arms LM- move downwardly and rearf wardly in paths at opposite sides of the pawls when member 45 is struck by a type bar. The arrangement of escapement and universal bar mechanism shown and described is very compact but permits the use of substantial and sturdy parts without interference. It also provides a rapid and aC- tif;

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curate letter lfeed` mechanism .as 4the escapement is controlled 'by theheels ofthe type `bars and the universal bar is yaccurately guided and heldagainst cockingsoasto act on the escapement uniformly irrespective of the position ofthe type bar `in the segmental series yof bars. It is evident that as one of the type bars `is `so' moved it operates sector and, through the train ol mechariism described, oscillates rod 40 and bell crank 86 to `move the paivls and 27 back and forth acrossrack V2,5 to effect afstep by step movement of the latter and'of the carriage, as wel] understoodin lthe art. It ivillbe noted that `the lever or inteijponent V36 Yengages dog 26, which is the rigid dog ofthe escapement,be tween the pivotofthe donr and :its nose or "lhis arrangement contributes to compactness.

The work carriage is shown as having `the usual marginal stopmeans comprising a portion or bar a6, vFigure `1, provided with notches 47 and with clips or stops 48 of the usual or any suitable construction adapted to be slidably positioned on the carriage zt'or cooperation with suitable stops on the `frame `to limit the movement of the carriage.

The "carriage locking and escapemcnt disconnecting improvements, generally speaking, comprise .means for locking the carriage in position on the frame and for disconnecting the .escapement `mechanism controlling `the movement of the carriage, so .that the `force offthe spring tending to move the latter is .borne by the carriage locking device. Such means serve to. maintain the carriage securely in position `so ftliat it cannot he shifted by :jarring or bodily movement of nthe machine Aand Sat the same time, bydieconnecting the escapement mechanism, protect the latteragainst Vundue strain and injury. These features are particularly adif'antageous in conjunction With machines ot' a portable type for safeguarding them during transportation. Such i machines .are

commonlyprovided Witli'casings for .enclosing them during transportation and the present invention comprises, furthermore, a construction and arrimgemeiit of parts providing 'for automatic operation of the carriage locking and mechanism disconnecting devices when the casing is moved to position to enclose the machine.

`Referring to ythe drawings fora more detailed description of these protective features, the `lower Lend of bracket 30 is shown as prowided with a rearwardly turned ear 49, on which is niovably or pivotally` supported, as at 50, a member or lever 5l. Y The latter carries a part or dog 52 having a bevelled upper edge for engagement with any of the notches 47 of the marginal stop bar, when the lever is moved forwardly of the machine. as shown in Figure 3, thus securely locking the carriage in position.

step 55 on the frame, as shown in FigureQ.

` 'l'he machine is ,shown in Combination with a `casing comprising 4 a Vbase portion on which the machine rests and a lcover portion 57 'hinged ,to the base vportion 4at `Then the cover portion is thrown rearwardly the machine is ready for operation, but when the cover Aportion of the casing is .moved to position yfor enclosingfthe ,machine the rear wall of thecover, `which is preferably provided witli anabutm-ent 459 for the purpose, engages level` 5l, moving ,the saine forwardly and automatically locking the `carriage and disconnecting its controlling mechanism, so that Vthe machine is placed ,in condition 4for f transportation without Adanger oit linjury 5to its parts. Various moditications of the casing may obviously be employed and `adapted in .conjunction with lever 5l for l.actuating the latter as de-V scribed. Y

The operation of .the lpresent ,improvements has iheenieezplained in connection with ,the description of the construction ol' the same. Lever 5l may, of course, be operated by hand ,and provided with any suitable `dc- Etent .means or fretaini-ng it in operating position, but it is prcferredyto arrange the lever as described for operation bythe casing so that Whenever the machine is `closed `for `transportation `the carriage ,is automatr `cally `locked and ,its lcontrolling mechanism disconnected Without requiring attention. -Lever 51 is of course shift-able with the cscapement trame or bed plate to each printing case and operatesin any shifted po3ition of the carriage. The carriage yis locked in such a vWay as to effectively' .prevent any movement thereof in any positionin :which the n'iachine .may :be placed andthe ,disconnection of the carriage controlling `mecha` `nism relieves the latter :of all strain, which is ,thrown upon the carriage [locking `dev-ice. The construct-ion is exceedingly Vsimple in Lform, vcomprising ibut l-fexv parts, u resultattained in part by reason of the advantageous combination oi' the same with the usual parts of the typewriter. That is to say, in locking the carriage, use is made of the usual notched bar or rack commonly provided as a part of the marginal stop means.

Similarly, advantage is `taken of the usual pivotal mounting of the paivl means controlling the feeding `movement of the cai iiage, for moving the pawls to disconnect them, so that special construction ot the parts of the typewriter proper is not required. The provision of the typewriter with the 'features of the present invention renders the machine safe iloi' transportation without danger of injury to its parts, or any attention on the part oi' the operator.

I claim as my invention:

1. A typeiviiting machine comprisng a frame, a work carriage, mechanism for moving said carriage on the frame to feed the work, a cover for the machine, and a locking device on said frame actuated automatically by the application of said cover for locking said carriage in any ofits substantially central positions to protect the same and said mechanism during movement ot' the machine.

2. A typewriting machine comprising :i frame, a work carriage. mechanism for moving said carriage on the frame to i'eed the work, a cover for the machine, and a device on said frame actuated automatically hy the application of saidy cover for locking said carriage against inadvertent movement and provided with means for disconnecting said mechanism to protect the latter and said carriage against injury during movement ot' the machine.

3. A typeivriting machine comprising a frame, a work carriage movable on the frame and having a portion provided with a plurality of notches spaced from one another in the direction of movement of the carriage, a cover for the machine, and a locking device on the :trame actuated 'automatically by the adjustment of said cover into engagement With the notches of said portion for locking the carriage against inadvertent movement.

il. In a typewriting machine, the combinationV with a frame and a. traveling work carriage thereon provided with marginal stop means including a notched portion extending in the direction of travel of the carriage, of a lever movably supported on the escapemcnt frame and having a part lor engagement with the notches ol said stop means for locking the carriage against inadvertent movement.

5. In a typeivriting machine, the combination with ak frame, a work carriage having a feeding movement thereon provided with marginal stop means including a notched portion extending in the direction of movement of the carriage, and mechanism for spacing the latter arranged for disengagement therefrom, of a protective device movable on the escapeinent .frame for disengagw ing said mechanismand carriage and for en gaging the notches of said stop means toloclt V the carriage against inadvertent movement. (3. In a typeivriting machine, the combination with a Vframe, al Work carriage having i nient with the notches of said stop incensi and with said mechanism for locking the carriage in position and disconnecting said rack and pavvl means to protect said parts from injury by inadvertent movement.

7. A typewriting machine comprising in combination a work carriage, mechanism for spacing said carriage to iccd the Work, n locking device for locking said carriage in position, a device :For disconnecting said mechanism, and a casing forthe macliiiic operating automatically upon iiioveiiieiit to position to enclose the latter, to actuate said devices for protecting the parts against iiijury during movement of the machine.

8. A typewriting machine comprising-in combination a Work carriage, mechanism for spacing said ycarriage to feed the work, a movable member provided with lmeans. `for locking the carriage in position and with means for disconnecting said mechanism and a casing for the machine operating automat ically, upon movement to position yto enclose the latter, to move said member to lock the carriage and disconnect said mechanism.

9. In a typewriting machine, the combination with a frame, a work carriage havingP a feeding movement thereon provided wit i ,i

marginal stop means including a notched portion extending in the direction ofmovcment of the carriage, and mechanism for spacing the latter including a rack and pawl means arranged for disconnection from each other, of a lever movahly supported on the escapeinent frame having means for engagement with the notches of said stop means and with said mechanism for locking tho carriage in position and disconnecting said rack and pavvl means, and a casing for 'the machine operating automatically, `upon movement to position to enclose the latter. to

move said lever to lock the carriage and disconnect said mechanism.

Geenen r. nose,