US1417910A - Typewriting machine - Google Patents

Description

E. B. HESS AND L C. MYERS. TvPwfilTlN MACHINE.

R'PLCAION FILED MAYZT, 1921. 1 ,417,910, Patented May 30, 1922.

l SHEETSWSHEET I.

E. B. HESS ANU I.. C. MYERS.

TYPEWHEHNG MACHINE.

APPLICATION man MM2?. m21,

1,417,910. Patented M1y30,1922.

E SHEETSWSHEEY 2.

E. B. HESS ANU L. C. MYERS.

TYPEWHIHNG MACHINE.

APPLICAHUN miv ,mM/21.

HUI.

Patented May 30, 1922.

b SHEETS SHEET 4.

E! B. HESS A'ND L. C. MYERS. wwmms mama.

APPLICATGN FILED HAY 2, 1921- 1,Ll'91CR Putnted May 30, 1922.

, G SHEETSASHFEE /MWA C EDWARD BERNARD nnss ASSIGNORSTO ROYAL TYPEWBITER COMIANY, INC., F NEW AND LEWIS CARY MYERS, or BnooxLYN, NEW vomi,l

YORK, N. Y.

TYrEWnITIVNG MACHINE.

Spaecatiion of Letters :PatentV Patented May 30, 1922.

Original application iled January 13, 192i, Serial No. 436,924. Divided and this application tiled Kay BERNARD olE the United States. residing in Brooklyn,

county of Kings, city and State ofvNvew York`r have invented certain new and Useful Improvements in ,'lypeivriting Machines. Yof which the following; is a specification. v

In our application for patent tiled Januarv 13. i921. No. 436.924., of which `this application is s division, we have shown a tyi'iewriting machine of the Royal type so constructed s to be small.` compact and light` but having 'the essential Vfeatures of thc larger or standard 'Royal machine. rind which is portable u'nll may be Sold at a relatively small, cost. That part of the invention herein claimed relates largely to the construction of the frame parts ol the machine. bntit also includes other features which will be hereinafter explained. f

We ci'nplov sheet metal and drawn stock to a verv lai-'gc extent in the construction of the machine in order .to make the mechanism. both strom.r and durable. ivellaslight and compact. fWe use the full' nuniher of keys 'nr 'the key hoard arranged `in` four banks. as in most standard machines. Mcchanism is provided for shifting-5 the platen for upper and lower case printing. inasmuch as the ,height of th machined-s considerably lessthan that of" the: standard Roya-l lnnchine. the printing point on the platen lms been placed considerably above a horizontal line drawn through the axis of the platen. and the type segment has been inclined ,rearwardlynnil `ar1'a1i|fed o bliquely with reference to the horizontal plane of the machine in order that the line of print may be properly presented to eyes of the operator. This involves a new arrangenienty of the mechanism for connecting the key levers to the type hars in order that the latter may be properly moved from their points of rest to theprintingr point. y

The platen carriage is so mounted and actuated that it moves in( a plane oblique to the horizontal plane of the. key levers, and the type bars are nrrangcdin a fanishap'ed field.

i. e.. thil arc in which the inner ends of the y type bars are piii'oted is considerably smfller than the arc in which the typecarrying ends of the type bars areldlsposedyvvhen ,at rest.

M runs, both citizensv Serial No. 473,172.

The construction and arrangement of the mechanism in the new machine is such that all interference of om` part with another in the transmission of power from the linger keys to the type bars, which is an essential though a ditiicult feature in a compact. portable;l fnlltandard key board machine, is avoided.

The key levers are connected with the type i bars by flexing connections which exert a tensile strain on the type bars and pull them to theprnting point with increasing or accelerated velocity as they aiproach the printing point. These connections between the type bars and the key levers are made between the finger pieces where powerr is applied and the fulcra of the levers and saidy levers are provided with extensions projectingrr rearwardly from the 'fulcra which en.- gage a universal har that controls the move.-` ment of the carriage. rIhus the key levers, when acting upon the universal bar, are of. the first orden' and when acting on the tv ie bar 'mechanism are of the second order.

nasmnch `as the type bars in the new machine are operated by tensile strain only tween the key levers and the t pe hars, and as theseconnections are medie in s. novel way. the machine is not impaired inoperation as in the case of machines' where pressionnnd lateral vstrain are present in such connections.

Our improvements arc illustrated in @he accompanying drawings in which Figure 1 is a perspective vview f the new machine with certain parts not claimed liefe.- in orijiitted. 1

Figure Qshows a side eleva-tion of the mg.- chine frame.

Figure?, is a plan view thereof.

Figure 4 shows a longitudinal section gi the machine, illustrating parts 'of the mw'lnism herein claimed.

[Figure 5, is a view looking `Jfrom the from et the rear portion of the machine frange, and shows howthe ends of' the frame are 'oned and covered by a reinforcing tieplatewhich also supports a margimrelonse lever. a' vline-lock lever, and a parl: of the ribbon vibrating mechanism.

Figure 6 shows a portion of the upper part of Ythe machine frame at the front of the machine.

igure 7 is a perspective View of the 1S- i sembly frame for the front links and key levers.

Figure 8 is a detail view of said frame.

Figure 9 is a View of the blank from which is formed a support for the front links of the type bar actuated mechanism and a guide for the key levers.

Figure 10 is a perspective view of this support and guide.

Fi re 11 is a detail view in perspective, showing how the front links are supported and how the key levers are guided.

The frame base A of the machine is made of thin, light, but stout and strong sheet metal which is blanked out from a single sheet in suitable form to provide the sides, back, front and part of the top portions of the base. Separate front top plates A2 are em- Eloyed and th are secured in place at a5.

eparate top p ates A are attached to the rear portion oi the frame. The frame serves as a base support for all of themechanisms and a casing for portions thereof. The top plates A2 serve as a dust-shed for parts of the mechanism. The two ends of the sheet metal frame are brought together at the back of the machine, as indicated in Figure 5, and are connected by a sheet metal tie-plate A of general T-shape and which is riveted to the opposite ends of the frame as indicated at a. This plate extends from the bottom of the frame to a plane slightly' above the upper edge of the back thereof. This plate in addition to tying together the ends of the frame at the back of the machine serves also to support parts of the mechanism as will be hereinafter described. While a frame thus constructed is strong and uite rigid, we prefer to impart additiona strength and rigidity thereto by placing suitable sheet metal reinforcing members a at the four corners inside the frame. The edges of the sides of the frame are turned inward or anged as indicated at a2 and the top is properly shaped to permit certain parts of the mechanism to project through it.

The tie-plate A', as indicated in Figure 5, supports a margin-release lever L `which is pivoted at l to said plate, and it also ysupports a line-lock lever M pivoted at m to the margin-release lever. A portion of the mechanism for vibrating the ribbon is indicated at M". This is pivotally mounted at m' on the plate A. The plate1 therefore, serves not only to connect and brace 4 the ends of the sheet metal frame at the rear of the machine, but it serves as a substantial support for the margin release lever, the line-lock lever, and a part of the ribbon vibrating mechanism.

The segment B to which the type bars C are pivoted is of cast metal. and it may be here stated that this member is the only one in the machine which is cast, all other metal parts being of the 1i htest possible character. This part is ma e particularly strong and rigid inasmuch as it sustains a large number of type bars, which must be pivotally mounted in such manner as to be moved with the greatest accuracy and precision toward and from the printing point on the platen. The segment serves to support other parts of the mechanism as will be hereinafter described.

It will be observed that the segment is arranged at an oblique angle to the horizontal, this angle being obtuse to the plane of the key levers as indicated in Figure 4. The segment is formed with a curved rib Z1 which provides a striking surface for the type bars intermediate their ends and insures the impact of the type at the proper point without undue penetration of the material to be printed upon.

The type bars C are thin, light .and strong,

being made of sheet metal, preferably cori rugated, as indicated at c. Their inner ends are disposed in slots b cut in the lower portion of thesegment and they are pivoted to a curved rod or wire b2 at the inner ends of the slots.

The type carryin ends of the type bars rest on a support The support C is suitably cushioned and so disposed as to normally hold the type bars at an obtuse angle to the plane of the segment, but in this case the arc of the support is materially greater than that of the inner bearing points of the segment. In this way the pivoted ends of the hars may be brought close together while the outer ends thereof may be spread so that the type car ing ends of the bars may not interfere. n this way also space is provided in the neighborhood of the segment for accommodating parts of the mechanism.

As shown in Figures 1 to 4 the front part of the machine between the top plates or dust-sheds A2 and in front of the support C is closed by a bridge piece A3 which is attached to the front plates in the manner indicated at a". The upper part of this bridge piece is curved in the-manner shown and it has a downwardly extending portion a (Fig. 4), which reaches to the type bar support H and covers the mechanism immediately in rear of it. In this way the dust-plates A2 and the bridge piece A3 serve to protect to a very great extent parts of the mechanism. It will be observed that the type heads are covered by the bridge piece A3 and furthermore that the curved middle portion of this bridge piece is below the top plates A2 so that the platen and parts immediately below it are distinctly visible.

It will be also observed that while the mechanism in the rear part of the machine is obliquely arranged the parts in the front A top plates or Awhich is su portion of the machine-excepting the tye bars, are. in general, arranged horizontal y. The top lates A2 are arranged in a true horizontal p ane and the ribbon spools K Whose shafts extend through the plates Aliare arranged horizontally somewhat below the line of print and they lie above' the plane of the dust-sheds A2. g'lhe part A3 serves to bridge the space between the two plates A at the front of the machine and in this way the mechanism is shielded in a most thorough and ellieient way, only such parts as it is necessary or desirable 4to see being uncovered.

' The type bars E are normally held on their rest' or are returned ,thereto by individuel springs e2 (,Fig. 4) attached to a flange c3 of the rest and to the type bars near their innei` ends in front of and above their.v )ivots The key board contains the -stariderq number of type keys, viz., 42 arranged in vfour rows or banks. and it also contains keys for operating the carriage shift, .back-space and nnerw gin release mechanism. Each of the fortytwo vkey levers is of the first' order being,r tulcrumed on a common rod e, its tront-` por tion being connected to etype bar between the fuk-ruin andthe fngerpiece, while the rear part of the leverV is extended rearwardly from the fulcrumend `operates on a onlveisal barF. Esch key lever. therefore.'-

When operating`v` on `the 'universel Ibar is of the first order, but when operating a type bar it is of the second order inasmuch as at4 this time the weight is situated between thel lever andthe fulcrum. I A y .y

The universal bar is also' 'operated by a space bar Sl carried by the front ends of levers s pivoted to the rod e :oid having ezi- 'tensons operating on the universal bar in the same manner as the type key levers. The rear portions of the leversis are con'- neeted by n tie bar e. A stof) for the space bei' is shown at's2.

The heels e offthe vtype bars belon-` and behind their pivots are. connected by links g to the rearv ends of the short bent links (l pivotally mounted on a common pivot rod g' rted in a frame of novel'coneeh link G yis connected by e The struction. link to l e corresponding key lever E links are made of wire, the ends of which are bent and pass through holes g3. es in the links G and levers E respectively. The ends of the links El', y2, ya if" are bent or hooked as 'indicated ,at g. e* Fig. 11) where they en gage the levers. Vn order that the levers may be placed close together to economize space and that the bentends of the links may not interfere with each othethe links are connected with thelevers at dilerent distonces from their pivots as shown in Fig. 4.

.The rear ends of the. key levers 4move dif ferent distances inssrnueh as the levers are of derent lengths. Therefore, the rear '/t which are closed at both ends.

ends of these levers are inclined at different angles and in such manner as to give to the universel bar the same movement whichever key is operated.

The support lslIf'orthe front links G vis preferably construetcdof n singlepiece oi light, strong sheet nietal-il'ul it is llso preferably so constructed as tof provide e comb guide for the front portions of the key levers Figure 9 shows e sheet metal blank Jfrom which the support und guide may be constructed.' Une part of the blank is provided with two series of parallel slots h'. it, to accommodate the front ends of the links G while the opposite portion of the blank is formed with e series of parallel slots hl5 to accommodate the key levers. Each end of the blank is formed with a wing or extension f h2 having holes Il? to receive rivets for secur-V `ingr the support .to a treme. The blank is rearwardly and then dom-nwardly'v parallel,

with the body of the support. The rod y to which the front levers are pivoted is die? posed between the front and rear portions of the upper` part of the support and fits snugly therein. 1t is supported at its endsI end also mid-wary' between its ends es shown bv a loop lil foi-ined from asuppoort H. i

This rod is held in such Inknner as cause the rear portions of the :lront links to extend through the rear slots /i/fvwhich reopen at their lower ends andi through the front slots These slots it. il are. ofcourse, in line with each The slots la. are open at their lower ends to allowthe key leversto work through them, and the wings h2 at opposite endsof'the'sup port are ybent rearwardly at `right singles to the body portion to afford Ineens for seci'irinir i the support to its frame. i

It will be observed that the pivotal con nection of the. front links with the support is covered and protected by the top of the support, which letter is mounted in a frame consistingof two side pieces J, l"i; r. 7, erich having a flat horizontal bese j, a front velti, cal .arm j and a rear vertical arm j". The

wings la? olE the support are riveted to the.

arms j at le" and the pivot rod g' is supported in the upper ends of the arms. The pivot rod is also centrally supported `bv a loop h1 formed in the support H its shown in Figures 4 und The rear ends of the frame pieces .l nre connected by a comb Aguide J' for the key lcrcrs. This guide consists of a slotted vertical rear part jl. e bottom part i* and two side portions or wings These parts are all made from a single piece of sheet metal bent to shape and secured in place.y The frame pieces .l ure secured to the wings at j and each of the wings jls is perforated at j? to receive the rod e to which asmuch as the the key levers are pivoted. The frame as a wholexis secured to the base frame A at al. The'support H and the frame in which it is mounted provide what may be called an assembly frame for the short front links and for the key levers. These may all be mounted in the support and these links and levers thus assembled may be placed in position within the base frame of the machine. The means described for connecting the key levers to the type bars affords a flexing connection between these members and a tensile strain is imparted through the links g from the key levers to the type bars. Furthermore, the connections are such that the types approach the printing point with an accelerated movement. which is at first comparatively slow, lwhen the keys are first touched, and they rapidly increase in speed as the depression oi the keys continues. Inlaten is arranged in an obliquely dispose carria and the printing point is above the horizontal plane of the axis of the platen the connections between the key levers and the type oars are such as to give the required movement to them.

The arrangement of the type bar operating devices is such as to procure substantially uniform depth of depression and approximately uniform touch of all the finer ieces of the key board. The shorter ey evers, whose finger pieces w' are in the rear row of the key board are each connected to one of the longer links G by a link y ex tending upwardly from the corresponding key lever, the points of connection of the link y' to the link G and to the key lever being such as to aff' rd the desired extent of depression of the fi. ger'piece ai of the key lever to throw the corresponding type bar to the printing point. 4The next longer key levers whose finger pieces m2 are in the seeond row from the rear in the key board, are also each connected to a link G by a link y2 but the point of connection of the latter link to the link G is nearer the fixed axis about which the link G moves than is the corresponding link connection of the shortest key lever. The relationship of the parts and leverages is such that the finger pieces rc. m2 of the two rear rows have the same extent of depression and the same touch. The next longer levers whose finger pieces :r3 are disposed in the second row from the front of the key board are each connected to one of the shorter front links (l as shown in Figure 3 by a link y. The distances from the axcs of these shorter links (l and from the axes of the corrcsr `uling key levers at which the connections oi thc vertical links are made are such as to afford a depth of depression of thc finger |iicccs.`flie same as that for the finger pieces af. .r2 in the two rcar rows and alst of substantially thc same touch.

Each lever carrying a finger picco a" in the front row of the key board is connected to one of the shorter front links by a vertical link y. The connection of the latter link to the front link G is nearer the fixed. axis thereof than is the connection between the key levers of the third row and such axis. The finger pieces m* of the lower row in the key board have the same extentof depression as the others and substantially the same touch. As the front links G are made alternately long and short, the staggering of the ends of the links with reference to a` straight, transverse line affords ample room for the hooks, by which the links g andy', y2, ya, y are attached to the links G so that in the operation of the 'machine one cannot interfere or collide with another. Each front link G is of elbow shape, its lower front end being bent upwards.' The point of connection of the type barlink g to the corresponding link Gis thusA made at a higher point than heretofore. In this way we are enabled to reduce to some extent the height of the machine and parts of the mechanism are made to so co-operate as to effect the 'full 90 throw of the type bars. Furthermore, the requisite clearances are obtained between moving and stationary parts.

The platen P is mounted in a carriage P' and the ribbon R is led from the spools K through a guide Q.. S indicates a device .for shifting the ribbon-o rating mechanism and S indicates a device for shifting a bichrome ribbon. 4

The platen carriage P is supported on a shift rail W which is moved up and down obliquely. This shift rail is supported by links w pivoted in the machine frame at lw and pivoted to the legs fw of the shift rail at w. The rail W is also supported by levers V mounted to move about the axis of the rod V', which is mounted in bearings at opposite sides of the machine. The levers V are pivotally connected with the legs A(wz of the rail W at o. The carriage is raised and lowered for case printing by a rod V connected at o to one of the levers V. A spring Va serves to partially counter balance the carriage and assists in raising it. The rod V2 is connected to the lever E in 115 thel manner shown in Figure 4. This lever is pivotcd to the assembly frame at 91 and is operated by a. kev in the usual way. The devices E shown in the drawings are for the purpose of locking the shift key to hold the carriage raised when so desired. Other mechanism shown in the drawings is more fully shown and described in our co-pending applications.

l. typewriting machine in which the platen is ohliqnely arranged and is provided with nicchanism for moving it ohliquely for case printing and in which the key-levers and type-hars are arranged substantially 13 horizontally with dust-sheds horizontally `errangednnd covering the front part of the machine. the ribbon spools being horizontally arranged below the line o print andA above the dust sheds, which are connected by un interposed bridgepiece.

2. A typewritimql machine in which the mechanism at the rear is arranged obliqiiely und the `rneclninism in the front substantinllv horizontally and which provided with two cover plates or dust-sheds and :t ln'idge-piece connecting them at the front which is curved from its outer ends downwardly towards the central longitudinal exis of the machine and which is provided with :i downwardly extending portion providintgr n shield for the` front of the machine above the key-board.

In a typewriting machine. n bese trame made. of a single piece of sheet metal bent to form the iront, sides und beck ot the trame and joinechtthe back, and eV tie-plate covering the joint and Secured to the frame.

4. ln a typewritinpr machine, a bese trame made of sheet metal bent to form the front, sides and berk of the buse freine and joined nt the back, a tie-plete covering the joint und secured to the frame, and margin relense mechanism and line lock mechanism supported by the tieplate.

5. In a typewriting machine, e base freine made of a single piece of sheet metal bent to forni the front, sides and back of the frame and joined at the hack, and a tie plete covering the joint and secured to the frame, and carrying margin release mechanism and line lock mechanism.

6. In a, typewriting machine. n hase freine made of a, sin le piece ot' sheet metal bent to form the gent, sides and back of the trame and joined at the back, a tie-plete covering the oint and secured to the 'treme` and ribbon vibrating mechanism suliported by the tie-plate.

7. ln a typewriting machine, type bars, `front links, connections therebetween, key levers connected with the front links, :md s slot-ted frame in which the front links are mounted and which is formed with mi. intev gral comb guide for the key levers.

8. In a typewriting machine, type-bars. front links connecting them, keydevers con nected with the front links. n sheet metal fra-me having front and rear slotted portions through which the front portions ot the links extendggsnd n pivot rod for the links extending,r between the front and rear portions of the frame.

9. ln n, typewriting machine. type-hars. front links connected therewith. key-levers connected with the front links. n sheet met-nl frame having i'ront find rear slotted portions throngh which the front portions of the links extend, e pivot rod for the links extending between the front and rear portions of the frammenti an integral slotted lower portion providing a 'comb guide for the key-levers.

l0. i treme for supporting and guiding the front links `und keyleversof a typewriting machine made of a single piece of sheet metal having slotted .upper end lower portions, and wings at; the side for securing it to a supporting treme.

11. A frame for supporting und guiding the Jfront links :ind keydeveis of zi typewritingl machine having front and rear slotted portions :it the top adapted to receive the pivot rod of the linksI nini .to guide the links, and having; n slotted'loigei' portion to provide n guide for the 'leversf` 12. An assembly frame for the lfront links and!` key-levers of n typewriting machine, comprising side treme pieces adapted to he secured to the machine treme, und a frame secured to the front ends of the sides having ai` slotted upper portion for the front links and the pivot rod, and a slotted lower ortion to provide a comb guide for the cylevers.

13. An assembly frame for the front links and key-levers of a` typewriting machine, comprising side frame pieces adapted to be secure/d to the machine frame, a frame secured to the front ends of the sides having e slotted upper portieri for the front links and the pivot rod, and n slotted lower portion to provide s comb guide for the keylevers, and another comb guide for the keylevers connecting the rear ends of the sides.

14. An assembly frame for the front links and key-levers of a. typewritng machine, comprising side trame pieces adapted to be secured to the machine frame, and a frame secured to the front ends of the sides havin a slotted upper portion for the front lin s and a. Slotted lower portion providing n comb guide for the front portion ol the key-levers, and e comb guide for the keylevers connecting therear ends of the sides and supporting the pivot rod of' the keylevers.

15. An assembly frame for the front links and key-levers of a typewritng'mfohine, comprising side pieces mede of sheet metal having front wings and rear wingsz a frame secured to the front Wings of the sides haw in e slotted portion to receive the front lin s and n slotted portion to provide e comb guide tor'the key-levers, and another comb Iuide for the key-levers attached to the wings :it the rear ends of the frame.

i6. An. assembly frame for the front links enfl key-levers of e typewting machine, comprising nn integral slotted support and guide for the `front links and a. comb guide for the key-levers, and a renr comb guide for the key-levers connected with the front support und supporting the rear ends of the keV-levers.

17. An assembly frame for the front links and key-levers of a typewriting machine,

comprising an integral slotted support :amd

guide for the front links and a comb guide for the key-levers, and a rear comb ide for the key-levers connected with the ront supportI and contaninv the pivot rod folthe key-levers, and deac able connections between aid assembly frame and base frame of the machinewhereby the front links, 10

their pivot r0d` the key-levels and their pivot 'rod may be. removed bodily and altogether from Vthe machine and replaced in auch condition.

In ttmony whereof, we haife hereunto 15 subscribed our names. A

EDWARD BERNARD HESS. LEWIS CARY MYERS.

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