US1883865A - Typewriting machine - Google Patents

Description

Oct. 25, 1932. E. E. BARNEY 1,383,855

TYPEWRITING MACHINE Filed Nov. 27, 1928 WITNESSES INVENTOR BY Q;

ATTORNEY Patented 1 Oct. 25, 1932 1 w s i PATENT @FFZCE EDWIN E.,BAR- NEY,' on nnwaoonnnnn, new Yonn, seer-anon, TG'EE'iaIiNG-TON Tyrawarren oonrrnny, or rnroimnnw YonK, A GOEPQB-ATION or new ron];

rYrnwnrrrne Macrame Application filed me ber 27, 1928. seria no. 322,199.

, v invention relatesto typewriting machines and more particularly to case-shift- 7 ing mechanism therefor.

The main object of my invention generally stated, is to provide very simply yet highly efiicient means whereby the oase-shiftlo-ckcanbe released from the right hand, as well as from the'left'hand,'case-shift key. Afurther object of my invention is to readily incorporate the features thereof ina Remington portable machine, for example, without materially modifying theex'isting structural features'thereof, and by employing the case-shiftingmechanism itself as a means by which the case-shift lock may be released from eitherlthe right hand'or left hand caseshiftkey, without the provision of any special case-shift. lock releasing. means ordevices. v

.To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements ofparts and combinations of devices set forth in the following description and particularly "pointed out in the'appended claims,

In the accompanying drawing, wherein like reference characters indicate-correspond I ing parts in the difirent-views- Fig. 1 is 'a fore and aft, vertical-sectional view showing. sulficlent number of parts of a typewriting machine to illustrate my invention in its embodiment therein. f

, Fig, 2 is a top plan view of the same.

Fig. 3- is a diagrammatic perspective view efthe same with parts broken away. V Y I have shown my invention in the present instance embodied in a Remington portable to embodiment'in such machine but may be 45 employed in typewritingmachines generally machine in which said invention maybe readily incorporated without materially, modify;

ing' thestructural features of said machine as they now exist. It should beunderstood,

however, that the invention is notfrestricted wherever found available.

Y Thepresent invention may be said to'be an improvementonthe construction disclosed in the patentto H. E. Bridgewater, No. 1,442,

' 792, dated Jan. 23, 1923;

Inthe'accompanying drawing the carriage,

designated as awhole by the reference nuable-member or platencarriage may receive machine. V a H v The remainder of the case-shiftframe com prises parallel side arms-5 arranged at oppositesides of the machine near the side plates 6 of the frame and which extend longitudi v nally fore and aft of the machine. The forward ends of these arms are pivoted at 7 to supporting arms or. links 8 which in turn are pivoted at 9 to "the side plates 6. The rear end portions of the arms 5 are'providedwith inwardly extending" ,flanges 10 on whichis secured the carriage support l. The rear end of the case-shift frame is supported by paral- @a case-shifting movement fore and aft 'of the lel arms 11 which are pivoted at their upper ends, at 12, to the carriage support and pro- 'ject upward from and are fixed to a rock shaft,

13, mounted a t-its ends i bearihgs the machine frame. l

Secured t'o'and extend ng upward from 'each'of lts sidearms 5 of the shift, frame is a case-shift stop 14 which cooperates with 21Cl]11Sl&bl stops 15 carried by the side plates 6 of the frame to limit the fore and aftcaseshifting movementsjof the Icase shift frame and the parts carried thereby.

' The key controlled case-shifting devices by which motion istransmitted to the case-shift frame are, in the present instance, as follows: "A slightly flexible rock shaft 16 is mounted at its ends in bearings infthe side plates6- of the frame,' such shaft therefore extending throughout the width of the machine. About midway in its length this shaft is provided with an upwardly extending crank arm 17 to which is pivoted, at 18, oneend of a case shift 15111119 that hasits opposite twisted end pivoted, at 20,. to a bracket21 secured tOQ he carriagesupporti l. 1 Y N ear the: left hand end of the flexible shaft 16 there is secured a rearwardly extending Y crank arm 22 provided'at its free end portion,

and at one side'thereof, with ananti-friction I i themiddle portion of the shaft 16 aroundthe pivot 18; asaa center and will; slightly lower the crank 22.;Thejresult of lowering the arm 22 as described, is to-reli'evesthe reac: tive- :force-i of the springsf39 and -41- and the wleightrofsthe partson'the case-.shift-lever 25 7 andth-e locking-lever QSis'carriedthereby.

vices operable from theright hand shift key 1130 releasefthe locked case-shift levenbut when this'occu'rs the force of'the spring 32 is j sufiicient to overcome the force of the spring 4O,thereby permitting the locking-lever 28 to be movedby its spring 321to the dotted line,

position shown in Fig. 3, releasing the locking-leverfrom its coa'cting engaging member 3a and permitting the case-shift frame and carriage to be returned to normal position under the action of the springs 39 etc., when the operator releases the depressed case-shift keyi3. From the foregoing it will be understood that I have-provided no special releasingde have employed the case-shift'mechanism itself to obtain this result and have modified parts of such mechan sm with this end in view. It is of course an important factor that r as, few parts as possible, consistent wit the ends to'beattained, be employed, and this is especially true in portable typewriters where of necessity the parts are closely arranged in a comparatively .smalls'space and there is I have referred I being slightly flexible to attain the ends in question; In practice Ihave found. that a steelrcek shaft made from of an inch stock and unsupported except at, its ends against flexing movement answers the purposes'of the present invention admirably. In the present construction 1 haveishown a stop arm 48 secured to a fixed cross b'ar'49 on the machine frame; The effective portion of this stoparm is locatedsome distance'from' I the rock shaft 16 when the latter is in an unflexed condition, as shown in Fig. 1. When the stop arm is employed it is merely used to limit the extent towhich the shaft 16Vmay b8, flexed. Howevensincethe case-shift lever i actuated case-sh ft 'lOclll-llgdfiVl' plvoted to, v

42 has a limitedextent of depression, there is not, ordinarily, any occasionto use the stop arm 4:8 and it may be oi'nitted. a I

Various changes may be made in thecon struetion without'departing from my invention as it is defined in the accompanying claims,

What I claim as new and desire to secure I by Letters Patent, is

, ,1. The combination, of a member mounted for case-shifting movement; and'case-shift; mechanism therefor including a case-shift They-lever at one side of the machine, a key-' actuated case-shift locking-lever carried by said key-lever; an engaging: devicetcooperative with said locking-lever, a" second case,-

'Sl1ifthey-leverat the opposite-side of the achine, a flexible rock shaft extending fromside-tmside of the machine, inflexible connections between said rock shaft; a-nd'the s case-shiftable-member, and :means; on said rockshaft; with i which said ,case shift key,- levers vcoact to rock said shaft, whereby when the case-shiftable-me'mber; is locked in v the i shiftedposition pressure" exerted on said second case-shift key-lever is effective to flex sa d rock shaft, and relieve the lflCtlVBfOlCB exerted-on said case-shift locking-lever enabling it to be released'from its coacting en} gaging device and the: case-shiftable-member to bereturned to normal position.

2. The. combination-of a 'fmember mounted for case-shifting'movement; and case-shift mechanism therefor; including a case shift key-lever at oneside of the machine, a keyi actuated' ease-shiftlockingdever pivoted to and-"carried by. said he *lever,'-an engaging device cooperative with said lockingdever, a spring for returning said T case-shift key-v lever to normal position, a spr1ng 'forreturm relative to the case-shift ikey-lever, and of case-shift; key-lever, and "case-shifting con- "nectionsx' between said case-shift key-leY'ers ing said locking-lever ,to normal position" and said 'case-shiftable-member, which 0011- I nections includea flexible rock shaft,;a con nection from said rock shaft/to the casehereinto the shaft 16 asj shiftable-member, and means intermediate said rock shaft and said case-shift key-levers V which effectarocking ofv-the shaft from either; case-shift ikey-levei', whereby when the, case-shiftable-inember is "locked in its Slllfted position pressure exerted on ;said

secondcase-shift key-lever is effectiveto flex said rock, shaft andrelieve the re active force exertedon said casesshift lockingelever enabling it to bereleased from its coacting engaging device and the case-shiftable-member tobe returned to normal position.

g {31, The combination of a member mounted for case-shifting movemen and case shift mechanism therefor including acase-shifted key-lever at'oneside o'fithe machine, a keyand carried bysaid key-lever, an engaging device cooperative with said" locking-lever, a

spring for, {returning said 3 case-shift key between'said case shift hey-levers and said case-shiftablemember,- which H connections include a ,-flex-' ible rocl; shaftf extending from side-to-side of the machine, anoperative connect on from a point substantially r midway: :in the length

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