US1732920A - Typewriting machine - Google Patents

Description

Oct 22, 1929 J. wALDHl-:IM 1,732,920

TYPEWRITING MACHINE Filed May ze, 1925 4 sheets-sheet 1 TOP VIEW Oct. 22, 1929. J. WALDHEIM 1,732,920

TYPEWRITING MACHINE Filed May 29. 1925 4 Sheets-Sheet 2 oct. 22, 1929. J, wALDHElM 1,732,920

TYPEWRITING MACHINE Fiied May 29, 1925 4 sheets-sheet 3 OGL 22 1929 J. WALDHEIM 1,732,920

TYPEWRI TING MACHINE Filed May 29 1925 4 Sheets-Sheet 4 Aff@ ' Patented Oct. 22, 1929` Y UNITE-D STATES PATENT OFFICE JOHN WALDHEIH, OF ELIZABETH, NEW JERSE'Y, ASSIGNOR TO UNDERWOOD ELLIOTT FISHER COMPANY, OF NEW YORK, N. YL', A CORPORATION OF DELAWARE TYPEWRITING MACHINE Application lcd Hay 29,

In the atents to McLaughlin, No. 1,488,- 453 and orcoran, N o. 1,509,828, is shown a standard Underwood typewriting machine comprising a base or framework portion with an overhan ing paper-carriagethereon, the framework eing encased in a pack which includes walls of sheet-metal and linings of4 felt or other sound-absorbing material; said pack not only damplening the vibrations of the framework at t e operation of the machine, but also serving as` an air-pocket absorbing sound-vibrations.

One of the features of the present inven, tion is the rovision of an overhead soundsubduing c amber or pocket co-operative with sald pack and directly enclosing the paper-carriage. In designing said overhead pocket, compactness has b eensought, and also ready adaptability to typewriting machines of standard construction. To secure these ends and to provide an overhead air-pocket which will co-operate eciently with said framework pack, said carriage-pocket is designed totravel with the carriage, and for this purpose is of light construction, and also in the preferred form has provision for the accommodation of the work-sheets at the rear of the carriage. This overhead pocket comprises top, slde, front and rear walls, and sets down over the carriage, being open at the bottom to co-operate with said pack in confining and absorbing sound of operation.

While said'overhead pocket or carriage enclosure is shown in the preferred form in combination with a machine-frame pack, still the invention is not limited in all cases to the use of a pack.

lin using sound-deadening typewritercabinets, in which a capacious base is closed by a wide cover, it has been found that such cabinets cannot be conveniently used in the regular drop-top typewriter-desks, because' of their carriage-accommodating extensions, which overhang the cabinets at the sides, and prevent the lowering of the cabinets into the desks.

To avoid such an objection, the pack and carriage-enclosure are preferably made in separate units, the pack fitting the frame of the machine, and the canopy over the car- 1925. Serial N0. 331,600.

riage being borne by or travelin with the carriage, and being made of su stantially the same width. This effects a reduction of the space required, and, when the carriage is centered relatively to the machine-frame, it may be dropped into the desk-compartment.

The carriage pocket or casing is pivotally mounted at the rear of the carria e and is swingable upwardly and rearwarty, away from the platen, to render the work-sheet accessible and to facilitate the manipulation thereof. However, when the work-sheet is placed around the platen, the carriage is operable from the outside of the casing, provision bemg made for the protrusion of the carriage-control levers to the outside of the pocket. In this manner it ispossible to return and line-space the carriage and to release the same, and also to rotate the platen by the hand-wheels independently of .the line-space lever while the carriage remains encased. The construction of the carria e- -enclosing casing 'permits the use of an nderwood standard typewriting machine with no alteration thereof. It has been customary to extend the carriage-control lever to the outside of the usual cabinet through cushionsealed slots, a feature which involved the changing of the carriage-control lever.

The carriage-casing is preferably provided with a rear auxiliary pocket to receive the overhanging portion of the work-sheet.

The pack is provided with a front plate fast to the machine-frame and the plate has an arcuate opening in front of the typebasket. The opening is provided with a detachable closure secured to the plate by means of clips. The top of the frame is also completely covered or closed against the emission of sound-waves, except for an opening necessary to connect the carriage and its operating mechanism in the machine-frame.

Said top closure serves' as a lower closure for the carriage-casing when the same is in its central position.

rlhe carriage-casing is provided withl an openin to render the work-sheet visible at the printing point. Said opening may be closed by .a glass plate.

In the preferred form of the present in- `vention, the main frame of the machine is enclosed by a sin le unit, pack or shoe having a Hoor, side wa ls and a rear wall. There is also provided a front wall which may be mounted on the front of the main frame to form a front closure. 4A casin is provided which extends over the t pewrlter-carriage, and itis provided with si e walls, a rear wall and a front wall, said carriage-casing being pivotally supported in one orm/ of the invent-ion on brackets secured to the carria e of the machine. The top edges of the si e walls of the pack conform substantially in outline to the outline of the lower edges of the side walls of the carriage-casing, and extend closely toward each other to minimize the escape of sound from the sides of the machine.

rIhere is also'provided a partition which forms the ceiling of the pack and forms the floor of a chambervformed by the carriagecasing. This partition ma be composed of individual sections, one o which is herein disclosed as attached to the removable front plate, the other sections being supported directly on the main frame of the machine.

casing, instead of being supported bSaid cover and said partition arel all lined with felt to'absorb the sound-waves. p

It will be understood that the pack with said partition may be used to a fair degree of sound-muliiing efficiency without the carriage-casing, and that the latter may be used with the partition to a fair degree of ellicienc without the pack, and, further, that the pac may be used with the carriage-casing without said partition. A higher de ree of soundmuiing efficiency is produce however, by using the three elements, namely, pack, partition and carriage-casing in combmation.

The carriage-casing is constructed so as to expose the usual platen-rotating knobs, the line-space handle, the carriage-return lingerpiece and the carriage-release handle, so that said linger-pieces ma be manipulated while the casing is in its e ective position over the carriage. To this end, the side walls of the*v casing are provided with cutouts through which the platen-shaft extends, upon the ends of which shaft the linger-pieces are mounted outside of the casing. The forward corners of said casing are indented to 'expose' at one side the line-space handle and at the other side vthe carriage-return linger-piece and the carriage-release handle, so that they may be manipulated While the casing remains in its effective position.

The casing is provided at its rear end with an auxiliary pocket to receive the overhanging end of a work-sheet extending from the platen of the machine. This auxiliary pocket may be closed at the bottom and -is curved to cause the aper to curl up within said pocket.

In one orm of the invention, the carriageon the typewriter-carriage, is supported on a subrear of the pack. In this form the sub-carriage is provided with an auxiliary pocket to form av continuation of the paper-pocket on the cover, in which the work-sheet hangs.` A connecting bar, extendingfbetween the typewriter-carriage and the sub-carriage, causes said carriages to travel in unison.

Other features and advantages will hereinafter appear.

In the accompanyin drawings,

Figure 1 is a front Vlew, in elevation, of an Underwood standard ty ewriting machine enclosed inthesound-deadening casing.

Figure 2 is a side elevation of the machine, showing the casing partly in cross-section, the cover-part being shown 1n dot-and-dash lines in its open or displaced position.

Figure 3 is a detail showing the carriageoperating levers and a portion of the coverpart of the casing. ,y

Figure ltis a perspective view of the machine-carriage and the cover therefor.

Figure 5 is aperspective view of the pack for enclosing the frame of the machine (not shown). l

Figure 6 is a plan'view ofthe top closure of the body-part, showing the machine with the carriage removed.

Figure 7 is a side View of the machine,

lshowing a portionl of the pack and the top opening-at the rear thereof for the overhanglng portion of the` work-sheet..

Figure l0 is airear view of a modified form 'of the invention shown in Figure 11.

Figure 11 is a side view, in elevation, of the casm and the machine enclosed therein, showmg a modified form of the 1nvention in which the carriage-cabinet is borne by rails fast to the pack or body-part.

, The Underwood standard typewriting machine includes a frame 10 supported by feet 11.-l Extending forwardly from said frame there is provided a keyboard-extension 12, in `which there are `mounted banks of keys 13, said keys being depressible to swing typebars 14, designed to strike a platen 15, around which there is provided a work-sheet 16. The

vplaten is shiftably mounted on a platen-frame 17 borne by a carriage 18, and the carriage is mounted upon rails 19 and is disposed for letter-space travel at each key-depression.

In order to control the movement of the carriage and the platen, there are provided a line-space lever 20, effective to return the carriage while line-spacingthe platen, a carriagerelease lever 21, effective to disconnect the carriage from the escapement-mechanism (not shown), and a carriage-return fingerarising from the operation of the machine, the

frame 10 is enclosed within a pack comprising a bottom wall or sole 22, two side walls 23 closely fitting the frame of the machine at the sides thereof, and a rear wall 24 also closely fitting the frame. At the front the pack 1s open to clear the keyboard-extension except for a low wall 25 under the keyboard..

The frame of the Underwood machine is provided with o enings 26, both at the sides andV at the rear t ereof, for the purpose of rendering the mechanism in the frame more accessible. In this invention, the casing is provided With a felt lining A27 for the purpose of closing said openings Aand to absorb or deaden the sound as nearas possible to its source. The top of the frame is also provided with a felt closure to prevent the emission of sound through openings at the top, clearance being provided for the free operation of some of the partsof the mechanism which protrude therethrou h' to support' and control the carriage. As. s own in Figure 5, the top closure comprises two rear plates, two

side plates and two lfront plates. The left-r hand rear top closure, indicated by the numeral 28, is`inserted from the rear of themachine and is clamped to the frame 10 by means' of tabs -29 projecting downwardly from `a t frame 30, to Whlch there is secured a piece of sound-deadening material indicated by the numeral 31. At the center of the'sound-deadening material there -is provided an opening or window 32 through which the carriagereturn band 33 of the machine is passed. The right-hand rear' top closurej34 comprises a frame 35 secured to the-'frame of the machine by means of a screw 36, to lwhich the carriagereturnband is secured.. A felt piece 37, having holes 38 and 39 res ectively designed ltoI clear the back-space lin 40 and the ribbonshift connecting link 41, is glued or otherwise secured to the frame 35, the frame and the felt piece being provided with an open slot'42 v for the purpose offclearingv the 4tabulating key mechanism 43. v\

To further enclose the upper ortion of the frame, there are provided en closures 44. Said closures comprise frames 45 and felt pieces 46 fast thereto. Said vpieces are secured to the machine by means'. of inwardlybent tabs'47 projecting from downwardlyextending ribs 48, the tabs 47 engaging an opening in the frame. The end closures are also provided with clearance openings 49 for the ribbonspool shafts 50.

At the front, the opening overlying the type-basket is provided with another closure 5l, also comprising a frame 52v and a felt piece 53 fast to the frame. The freine is provided with slots 54 to clear the ribbon-feed mechanism, and also with .a clearance cutout 55 for the type-bars. The frame is reinforced by means of cross-ribs 56, and has an arcuate t rear edge 57 to close as muchas possible'of the opening over the type-bars.

The front opening of the machine-framev is provided with a plate 58 secured thereto gy means of screws 59 fitting into holes 60.

his plate is substituted for the regular front plate ofthe Underwood machine which is vdesigned to protect the mechanism within the frame. Said plate is also provided with an arcuate opening 61 in front ofthe type-bars to facilitate the cleaning thereof. In this invention, there is provided a front closure comprising a plate 62 and a felt lining 63. The plate is designed to overlap the opening and 1s provided with inwardly bent tabs 64 engaging the plate 58 to thus support the closure thereon. In order to facilitate the vremoval of the front closure there is provided a finger-piece 65 fast to the plate 62.

The carriage-cabinet is illustrated in its .preferred form in Figures 1, 2, 3 and 4, andl comprises side walls 66 forming an integral part of an arcuate top 67 which extends rear- '.Wardly and downwardly at 68,v forming a wardly from the carriage to. lower the fulcrum oint ofthe cabinet. In order to facilitate t e assembling of the cabinet upon the carriage, there are provided fulcrum 'studs 72 having on each a reduced portion 73, at the ends thereof, engaging with holes in the brackets 70. The studs are screwed into a tapped hole 74 in the sides of the cabinet.

One of the features of this invention is that the carriage of the machine is completely operable from the outside of the cabinet, and, to this end, provision is made for the prot-rusion to the outside of the cabinet of the linespace lever 20, the carriage-release lever 21 .and the finger-wheels 75 at the ends of the platen 15. In this manner it is possible to completely manipulate the work-sheet during the typing operation except for the replacement of the work-sheet, in which case the cabinet is swung rearwardly awayfrom the platen and is held in an open position as shown in dotand-dash lines in Figure 2 by its own weight and by the action of balancing springs v76. The springs 76 are operatively mounted between two studs 77 and 78, the former fast to the brackets 70 and the latter fast to the side walls of the lcabinet to assist, by their closing tension, to both open the cabinet and hold 'A isc of a transparent late to revent the emission of sound t erethroug The plate is preferably made of glass and is secured to the sible of the carriage, and at the same time it is desirable to render the carriage-control levers accessible without displacing the cabi-' net, there is provided a cut-away portion at each side of the opening 79 to thus clear the carriage-control levers and permit their operation. The cut-away portion is enclosed by front walls 86 andside "walls`87, the latter conforming to the side guard of the carriage. At. the rear, thecabinet .extends downwardly and forwardly, forming a curvate wall 88,

which wall extends again upwardly, forming a straight wall 89 substantially parallel to the rear wall 68, and terminates with an edge90 partly cut away to clear some of the mechanism when the cabinet is swung to an open or f displaced position. To further deaden theI sounds arising from the operation of the machine, the carriage-cabinet is provided with a lining of sound-deadening material, indicated generally bythe numeral 91. f

In another form of this invention, the carriage-cabinet is provided with an opening v92 at the rear for the overhanging portion-'of the work-sheet. Said formv of the invention is illustrated in Figure 9.

In order to relieve the `carriage from the weight of the cabinet, there is provided mechanism in another form of the invention illustrated in Figures 10'and 11. Said mechanism comprises a rail 93 fast to the rear wall 24 of the pack, upon which iail there` is mounted a box-like memberl 94 disposed for lateral travel therealong. The member 94 is provided with wheels 95 revolubly mounted thereon, the wheels having a V-shaped periphery engaging with rounded edges 96 of the rail 93. In this manner the friction of the wheels upon the rail is reduced to a minimum and at the same time the member 94 is slldv ably positioned on the rail. The member is provided with a lining 97 of sound-deadening material and comprises end walls 98 provided with studs 99 upon which the cabinet is rockably mounted.

Thecabinet in this case is not supported by the carriage at 100 as in the preferred form, but is su ported uponv its rear end, the whole weight t ereof being borne by the member 94. It will be noted in this connection that the sides of the cabinet are provided with clearance cuts 101 to clear the platen-axle 102 when v the platen is shifted to ,upV er-case position. The modified form of the invention is illustrated in Figure 11, in which the cabinet is shown in both closed or yeffective and open n positions,.the latterplpsition being 'shown in here are also provided dot-and-.dash lines.. y compensating springs 103 to assist in displacing -the cover which is held in its open position b its own weight holding lthe sides of the ca inet against studs 104 projecting from the member 94, upon which studs one of the lends of the springs7l103' is anchored. The

other ends of t e'springs' are secured to studs 105 fast to the ,side walls of the cabinet. The weight of the cabinet is borne bypins 106 fast to the member 94, and the front portion of the cabinet hangs over the carriage.

In order to drive the cabinet and its supporting member 94 along with the carriage,

there is provided a connecting piece 107 se-v land is fastened' to'thejrearfwall fof the pack tend the carria e-control levers to the exterior 'of the soundroofcasingfthrough openings in front thereof... .Saidv levers had to be elongated in order to facilitate the operation from 4the outside o f the casing. .Inithis invention,

owing tothe manner iii-whichv the carriagecabinetis designed, vit is possible to use the same levers as provided inthe Underwood machine, thus eliminating the cost of replacing the levers.

` 'Variations maybe resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim: y

1. The combination with a typewriting machine, including a main frame and a carriage, of a sound-muling device, said device including a casing to enclose the frame of the machine, a casing to substantially enclose the carriage, and sound-muiiling means arranged under the carriage and above the main frame, said sound-muiing means forming a substantiall closed ceiling for the frame-casing and a su stantially closed floor `for the carriagecasing. n

- 2. The combination with a typewriting machine, includinga mai-n frame and a carriage, of a sound-mutiling device, said device including a casing to enclose the frame of the machine, a casing to substantially enclose the carriage, and sound-muiliing means arranged under the carriage and above the main frame, said sound-muling means forming a substantiall closed ceiling for the frame-casing and a su stantially closed floorforthe carria ecasin ,said carriage-casing beingarrange to trave with saidcarriage. v

3. The combination with a typewriting machine, including a main frame and a carriage, of a sound-mailling device, said device v1ncluding a casing to enclose the frame of the machine, a casing to substantially enclose the carriage, and sound-muiiting means arranged under the carriziiige and above the main frame, said sound-mu ing means forming a substantially closed ceiling for the frame-casing anda substantially closed door for the carriage-casing, said carriage-casing being su ported on said carriage to travel therewit 4. The combination with a typewritingv machine, including a main frame and acarriage, of a sound-muhng device, said device including a casing to enclose the frame of the machine, a casin to substantially enclose the carriage an to travel with said carriage, and a paper-pocket at the rear ofy said carriage-casing to receive the -overhanging` end of a work-sheetfrom thecarriage.

5. The combination with a typewriting machine, including a carriage having a 'finger-piece thereon, of sound-muling means including a cover for said carriage .to travel with said carriage, said cover having an indentation at one of its cornersv to 'expose the finger-piece, so that said fingen-piece may be manipulated while the cover is in its effective position.

6. The lcombination with a typewriting machine, including a carriage having a linespace lever at one end and a carriage-release lever at the other end thereof, of sound-mufling means including a cover for said carriage to travel with said carriage, said cover having indented corners at its forward end,

the line-space lever projecting from the carriage into one indented corner and the carriage-release lever projecting into the other corner, so that both levers may be independently operated while the cover is in its effective position.

7. The combination with a typewriting machine, including a carriage and a platen on said carriage, of sound-mufliing means including a cover for said carriage and mounted to travel therewith, said cover including a rear wall terminating at a sheet-deflecting pocket to receive the end of a work-sheet overhanging the platen. K

8. The combination with a typewriting machine, including a carriage and a platen on said carriage, of sound-mutiling means including a cover for said carriage and mounted to travel therewith, and a pocket at the rear of said cover, travelling with the same,

to'receive the overhanging endl of .a worksheet on said platen.

.-rangedabove the type-bars.

9. The combination with a typewriting machine, including a main frame and a carriage having standard carriage controlling means, of a sound-muliling device including a casing to enclose the main frame, and a. cover having side walls for said carriage,

said cover being mounted to travel with said vcarriage over the frame-casing, said side walls on said cover having recesses Ythrough which the carriage-controlling means projects to enable the carriage being-wholly controlled from the exteriorof the casing. l

.f 101. The combination with a visible type# l writing machine having a carriage and `gerieces on said carriage, of a lcover extending over said carriage and v traveling therewith, said cover h ving indentations at its forward corners to expose said linger- ,1

pieces, anda window between .said indentations through which the printing point may be observed.

11. The combination with a typewritizi;`

machine having a carriage and a' platen on said carriage, of sound-muilling means 1ncluding a cover for enclosing said carriage and mounted to travel therewith, said cov `r including a rear wall formed into an enclosing pocket to accommodate the overhanging vend of a work-sheet extending from the platen. y

12.. The combination with a typewriting machine, including a carriage, of sound-muffling means including a cover for said car# riage, said cover having a pocket at its -rear end and extending downward from said carriage, and brackets on said carriage, said4 at the sides, front, back and bottom, and a plurality of closure devices to substantially close the top of said casing, said closure devices being located in substantially parallel planes at the top of said frame and uniformly below said carriage, forming a-soundbale therebetween.

14. The combination with a typewriting machine, including a main frame, a front plate thereon supported thereby. a carriage, a platen on said carriage, and type-bars to print againstsaid platen, of sound-muiling means including a casing-to enclose the main -frame at the sides, back and'bottom, and a plurality of closure devices to 'substantially close the top of said casing, said closure devicesbeing locatedA in substantially parallel planes at the top of said frame and uniformly below said carriage to form a sound-baille therebetween, one of said closure devices being supported by said front plate and ar- 15. In combination with a typewriting machine having a platen and a carriage, a sounddeadening hood movable with andv enclosing said carriage, and pivotal means ori the carriage for rendering the hooddisplaceable between fixed stop ositionsjfor `facilitatin the manipulation o a work-sheet aroun -the platen. p

16. In combination with a typewriting madeadem'ng cover movable with andenclosing said carriage, and l meansv `for rendering" `the cover displaceable awayfrom `said Iplatenfor facilitating the manipulation of a worksheet, said cover including endwalls forxnin an integral part of a curvate top, and sai top extending rearwardly and'downwardly and` forming a pocket for receiving the'unuscd,

portion of the work-sheet and vproviding a pivotal position for the cover. q v

17. In combination with a typewriting machine having a platen and a carriage, a sounddeadening cabinet wholly supported by vsaid carriage, and means for rendering the cabinet displaceable for facilitating the manipulation of a work-sheet, said means including brackets fast to the carriage to pivotally sup-v port the cabinet andstuds in the side walls of the cabinet to limit the movement thereof in two directions. s

18. In a typewritin machine having a carriage, a laten shiftab y mounted on said car mage, a ever for line-spacing the platen and for returning the carriage, carriage-feedingv mechanism, a lever for disconnecting the carriage from said feeding mechanism, and finer-wheels for rotating the platen, a soundeadenin hood wholly supported by the carriage, sai hood completely enclosing said carriage except orthe platen and carriage control levers and for the platen-rotating wheels, and said hood .being pivotally mounted on the carriage in a manner to afford the displacement of the hood away from the platen and from said platen and carriage controlling means, for rendering the platen accessi.

ble'and for manipulating a work-sheet.

19. In a typewriting machine having a traveling carriage and a frame supporting the same, rigid noise-miiling means 'including a sound-balile arranged below said carriage in order to lie between the same and said y machine having a traveling carriage mounted on a frame, of sound-muiiling means including a pair of relatively stationary baflie- 'G- walls arranged beneath and above said frame,

respectively, the latter being located between said frame and carriage, in order to acoustically isolate one from the other, and a third baliie-wall superposed in spaced manner above the upper frame-baille so as to overlie said carriage and travel therewith.

from said window for receivin [vof a work-sheet riage.

chine having a platen land acarriage, asoundl l x mounted on a frame and provide ger-pieces, of a cover for the carriage to travel therewith .and normally provided rearwardly `with a: poc

22. The combination'with a visible type- ,writing machine having a travelin envelo e the same, et to receive thefoverhang of a work-web from said carriage, and provided forwardly with a window for viewing the printing point and with indentations on both lsides of said window to expose said finger-pieces for manipulation.

23. In a typewriting machine having a frame, a key-board and a traveling carriage, the combination with a sound-mulling casing completely enclosing said frame while exposing the keyboard, a sound-mulling enclosing cover associated with said carriage in such manner as to lenvelope the same and travel therewith, and an intermediate stationary baffle-means secured to the frame t`o acoustically divide said casing from said carriage-cover to constitute said casing and said cover as two acoustically isolated units.

24. In a ty ewriting machine having a frame, the com ination with a traveling car-A r1age,of a sound-mutlling cover for enclosing said carriage, and means to render the cover displaceable and to hold the saine in regisom said car- `carriage with finter with the carriage so as to travel therewith,

including a rearward pocket forming part of said cover, and rigid projections associated with said carriage in such manner as to extend into said pocket and pivotally support said cover within said pocket.

25. In a typewriting machine having a frame and a traveling carriage thereon, the combination with a soundmuliling casing for enclosing said frame, a pivotally mounted sound-muiling cover enveloping said carriage in such manner as to travel therewith and to be relatively displaceable in order to completely expose said carriage, and an auxiliary sound-baille on said frame interposed between the same and said carriage to acoustically isolate the frame-casing from said carriage-cover.

JOHN WALDHEIM.

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