US1661392A - Typewriter cabinet - Google Patents

Description

March 6, 1928.

B. C. STICKNEY TYPEWRITER CABINET Filed. May 14. 1920 4 Sheets-Sheet 1 Q www x Q March a. 1928. 1 1,661,392

B. C. STICKNEY TYPEWRITER CABINET Fild May 14, 1920 4,SheetS-Sheet 2 Q a him/77b)? 5 5 w a'Jw March 6, 1928. 1,66i,392

B. C. ST|CKNEY TYFEWRITER CABINET Filed May 14, 1920 4 Sheets-Sheet 5 hvenforr WWXW March 6, 1928.

B. c. STICKNEY TYPEWRITER CABINET ll. 1 v l I l t l1 0 v I llllll Patented Mar. 6, 1928.

UNITED STATES PATENT FFICE.

TYPEWRITER CABINET.

Application filed May 14,

This invention relates to key-operated machines, and more especially to devices for reducing the noise incident to the operation of such machines,

The invention is herein illustrated as adapted to an Underwood Standard typewriting machine, which. is enclosed in a sound-proof case comprising a collapsible or pleated bellows portion at each side or end ofthe case, each collapsible portion being extensible by the projection of the typewriter carriage from the adjacent end of the machine. The machine and casing may rest on any suitable support or base.

To permit easy access to the typewriter carriage, especially for facilitating the insertion of work-sheets around the platen thereof, the device may be provided with a removable cover, preferably hinged at the back, and each collapsible portion may be automatically swung down or back at the lifting of the cover, thus giving complete access to the platen, irrespective of the position of the typewriter carriage.

The front or top of the cover, or both, may be largely made of transparent material to enable the typist to view the typed matter upon the work-sheet, and to admit sufiicient light for the easy reading of said matter.

In order to hold the collapsible portion firmly in place in the ordinary operation of typewriting, the cover may be provided with latches which fit down over the frames on which the collapsible portions are carried, thus enabling each latch to take the strain when the typewriter carriage expands the adjoining collapsible portion.

To effect the operation of line-spacing, there may be provided a handle, which travels along the cover and is adapted to return the carriage by movement in the usual direction. This handle may extend through a slot in the cover, and engage a connection to the usual line-space lever, thus enabling the handle to operate said lever and return the carriage b drawing on the lever. Provision may e made of means to keep the slot sealed irrespective of the position of the handle.

Provision may also be made of a soundarresting partition or baffle beneath the keglevers rid eta-operating at its front with t e comb through which the .h'eydevers ass,

1920. Serial No. 381,259.

reduce the noise escaping at the front ofthe machine.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a face view of an Underwood typewriting machine having the present in vention applied thereto.

Figure 2 is a similar view, but partly in section, and showing the carriage near one end of its travel, and the accordion-like or pleated collapsible portion for that end being shown in section.

Figure 8 is a view similar to Figure 2, but with the cover raised.

Figure 4 is a plan view of part of the linespace connections.

igure 5 is a fragmentary perspective view of the handle for operating the linespace lever.

Figure 6 is a sectional side view of an Underwood typewriting machine in the casingz with the casing closed.

igure 7 shows the usual Underwood rubber foot with its usual attachment screw.

In the Underwood Standard typewriting machine, comprising the usual Underwood open framework 9, character keys l0 depress key-levers 11, thereby opiirating bell-cranks 12, to swing type-bars 13 upwardly and rearwardly against the front of a platen 1. 1, which is rotatably mounted in a traveling carriage 15. Whenever a key descends, it causes a heel '16 on its type-bar to strike a universal bar 17, and thereby swing rearwardly the usual dogs 18 to permit the carriage to be drawn along one step by the usual spring barrel 19, said dogs being effective on the usual escap'ement wheel 20 and its connections to the carriage When preparing to typewrite, the typist passes a work-sheet 21 over a rear papertable 22 and up in front of the platen, it being held in place by the usual devices (not shown). In the ordinary operation of typewriting, after a line has been typed upon the work-sheet 21 and the carriage has been, in the meantime, fed along to the left, the typist returnsthe carriage by actuating the line-space lever or handle 23 to return the carriage and actuate the usual line space wheel by the usual slide 24;.

The travel of the carriage it either diiec Mus-1 tion is usually limited by the margin stops and 26, which are adapted to be adjusted along the front scale 27, along which moves the usual pointer 28 upon the typewriter carriage. The margin stops and 26 are usually slidable on a rod 29, and are adapted to be adjusted by means of their fingerpieces 30.

The device for suppressing the sound or noise of typewriting is shown as comprising a left-hand bellows 31v and a right-hand bellows 32, each mounted upon an accordion or bellows frame-plate 33, each plate journaled at its bottom upon a shaft or rod 3st carried in cars 35 projecting endwise from the bottom of a front plate 36, which is adapted to cover the front of the typewriter, and lies between the top bank of keys l0 and the front of the frame. At its rear end, each shaft or rod 34 is carried by a similar ear 37 extending endwise from ear plate 33, said plates being either of copper or some other substance or structure, which tends to deaden sound. Normally, each framedate is held in an upright position, so that'its upper front corner lies against an end plate 39 rising vertically from a cover 40, which is hinged to the rear plate 38 by a hinge l1 behind the platen and at about the height of the platen. F or holding the frame-plates 33 in their upij'ight positions, there is provided a comparatively strong spring 12 encircling each shaft or rod 34-.

When the typist desires access to thecarriage 15, she lifts a handle or finger-piece e3 which is fast upon the cover 40 at the center thereof, lifting the cover 40 up around its hinge 41. This automatically throws the pleated portions or members ill and 32 from their Figure 1 to their Figure 3 position. Normally, the frame-plates 33 are held against the plates 39 by ears 44, which extend from the tops of the plates 39 and overlap the adjacent frame-plate 33. As soon, however, as the typist lifts the handle .13, the cars it are carried clear of the frameplates 33, and then each frame-plate is thrust outwardly because a link for each frameplate is pivoted to its inwardly projecting arm 46 fast upon the inside of the cover 40. Each arm l6 is near the hinge 41, with the result that, when the cover is thrust. back, each link 45 is drawn upwardly to rock the horizontal arm 47 of its boll-crank 45S pivoted at. 49 on the inner side of the back plate 38. Each bell-crank 48 is connected by a pin-and-slot connection 50 to an arm 51 projecting inwardly from the adjacent frame-plate 33, with the result that as the cover l0 swings u nvardly and backwardly, each frameplate is drawn to the Figure 3 position against the tension of its spring 4-2.

In order to give the proper throw to the frame-plates each linlr 45 is connected to its bell-crank arm 47 by a pin-and-slot con nection 52, and is arrested at the limit of its throw by a fixed stop fast upon the rear plate 38. Normally, each accordion or bellows portion is collapsed, as seen in Figure 1, or at the right hand of Figure 2.

During the operation of typewriting, the carriage 15 travels to the left, described above, and pushes outwardly, by means of the usual knob 54:, the end plate of the bellows 31, thus e2q anding the bellows against the tension of its spring 56, which normally tends to collapse it, but which may be omitted when not desired. In order to ltcep the bellows from sagging, each end plate is provided with a rod or post 57, which is fast to the plate and projects inwardly through a sleeve 58 projecting both outwardly and inwardly from its frame plate 33 and serves for a guide. When the bellows in collapsed condition the enlarged base of the rod 57 engages the outer end of the sleeve 58. I

The bellows may be of any desired or suitable construction, and are each herein shown as comprising an outer layer 59, which. may be of leather or imitation leather, and an inner layer 60 of suitable flexible or soundproof tcxtile material. The end plate is made of any suitable material to make it a poor conductor of sound, and it is provided with a projecting disk (31 against which the knob 54: bears when the bellows is expanded.

In order to bring the sleeves or guides low enough down to enable them to clear the top safely in opening, and yet at the same time stand clear of the carriage 15, the sleeves are mounted upon the plates 33 by downwardly projecting ears 62, which extend a considerable distance toward the platen and carry the posts 63 upon which the bellows springs 56 are anchored.

To enable the typist to view the typed lines upon the work-sheet 21, as it lies upon the platen 14, the front of the cover 4-0 is provided with a. transparent cover or plate 64;, sloping at an angle of about 45, so that the typist looks squarely through it at the typed matter.

For actuating the line-spacc lever "23 from the outside of the casing, there is provided a line-space handle 65, which is slid able across a depressed flat space 6t; in the cover 4-0 lying behind the transparent plate 64- and in front of a transparent plate .37. which stands above the platen and set to admit light.- from above more directly upon the work-sheet as it lies rcarwardly across the top of the platen. The handle (3 is mounted on a. small truck 68 comprising four grooved wheels 69 adapted to run upon a pair of round rails 70, which extend along and above the intermediate section 66. of the cover 40 and are mounted in the vertical plates 39 of the cover 4.0. The handle 03 runs in a slot 71 in the intermed ate portion 66 of the cover, and is provided with a forwardly extending arm 72 having a "fork 73, which is adapted to engage the upturned end 74: of a slide 75, which extends to the end of the carriage and there carries a fork or pair of lugs 76 lying on each side of the line-space lever 23, so that the two swing, together.

The slide is provided with a slot 77 through which project shouldered threaded into the front bar 79 of the carriage. In order to close the slot 71, in which the handle 65 runs, the handle :5 ast to the ends of a belt 89 ot' suitable tenibility, which is carried around a pulley 81 at each end, said pulleys being journaled in ears 82, projecting downwardly from the cover section 66, and the idle hi it 83 of the belt is can ried above the carriane, so that the upper stretches 84 of the ob; always maintain the slot 71 in the cover section 66 sealed at sound and dust.

To give a wider field of vision through the plate 64, the plate may extend up above the level of the section where the handle 65 has its runway, and the section 66 may be provided with a downwardly slanting arm or plate 85, which extends downwardly from the top of the plate 64:.

To ait'ord access to the margin stops and 26, there may be provided a smaller front cover 96, which hinged at 8'? upon the front plate 8-5 of the casing and is provided with a suitable latch, which may take the form of upturned spring lugs 89 at the ends of the cover 86. There may also he provided a finger-piece 90 to enable tie typist to easily open the cover The plate 36 may be held to the rear plate 38 by shouldered. spacing rods 9 one at each side oi? the machine, into which suitable screws 92 are threaded.

The frame-plates Bill are preferably so designed that they come up against the ends of the rear plate 38 and the ends or the trout plate 36, thus closing the whole end ot the casing about the typewriter.

In order to close the bottom of the type writer to deaden the noise, there may be provided a sound-deadening partition, or bathe, in the form of a bottom plate havii a depressed center 94;, to allow room for Bill depression of any key-levers, and having ends 95 which are adapted to lie against the machine frame 9 and to be held thereto by the usual cupped rubber feet 96, which in said Underwood machine are held up by screws (not shown) threaded up into the legs of the machine frame, the screw-heads being located within the cups in the feet. The t 'pewriter and casing may be set on any suitable base or support. Because the various levers used on special machines, such as carriagebaclr-spabe levers, might interfere, the front plate 36 out off at 9T screws T8 just above the key-levers, and carried down at the side in legs 98, which form the lugs in which the shafts 3d are carried. The lower end of each leg 98 is held by screw 99 to a bar 100, which extends from the front plate 36 to the rear plate 38 and is held to the latter by a similar screw 10l.

cates the latter in the casing".

.ln order to prevent any work-sheet 51 from catching on the edge of bellowsframe-plate 33, there is provided a deflector guide or plate .106, which is mounted on the ends of the arms 46, and serves to detlect the rear end of a work-sheet past the bellowsframe plates. 7

If it be desired to more completely close in the typewriter, there may be provided a special comb plate 107, which extends upwardly from beneath the heydevcrs 11 rest ing on the turned-up front end 95 oi the bottom plate 93, and extending: above the key-levers 11 and then bent w t against the back of the front plate 36. The comb plate 10'? may be held in the type writing machine in any desired way and its lower edge may be in close en gement with the sound deadening mz'atcriai on the terward end 95 ot the bottom plate 9? The front plate 36 may extend upward on each side of the cover 86, and thus form a at its top edge 110 for the top cover. trance the hinge 411 is directly behind the edge 110, the top cover may come down and lit rlosely behind the front cover 86, which overlaps the plate 86 at its side edges 111, and is thereby held outwardly just clear of the top cover.

To assemble the typewriting machine in t he sound-proof casing.v the usual rubber feet 96 may be removed from the machine by unscrewing the usual screws which hold it, and then the element 103 and the noise absorbing felt-lined bottom plate element 94; are secured to the bottom ot the Jilwriting; machine by said screws, which also of course hold the rubber feet up against the under side of the side portions oi said bottom plate. the plate being; rigidly secured to the machine by the screws. The s de, 33 of the shell or case may be opened to the position seen at Figure 3, and the cover 40 may also be swung back around the hinge may be taken out, also 4; The screws 92 the tie-rods 91, and the frontplate 36 may be taken from the casing. The remaining three sides of the casing may then be as sembled upon the typewriter, and the front plate 36, rods 91 and screws 92 replaced. The base-bars 100 rest upon the mat 28. The bottom plate 94 fits closely between the side plates 33 and extends forwardly against the front plate members or legs 98 (Figure 6), whereby the typewrit-ing ma chine is accurately located in lateral directions within the casing, so that the carriage-controlling handle connection 73 runs in a true path with the lug H, on the carriage, and does not become uncoupled from the carriage.

Variations may be restored to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, 1 claim:

1. A casing for a typewriting machine having keys, a frame and a platen-carriage traveling on the frame, said casing comprising a body embracing said frame and from which the keys project, said bOC y having open ends through which the carriage may project as it travels beyond the frame, and chamliiers into which the carriage may run, said chambers extending laterally from said ends and being collapsible.

2. A casing for a typewriting machine having keys, a frame and a carriage traveling on'the frame, said casing comprising a body embracing said frame and from which the keys project, said body having hinged ends comprising openings through which the carriage may project as it travels beyond the frame, and an extensible carriage receiving chamber upon each end to close the opening therein.

23. A casing for a typewriting machine having keys, a frame and a carriage traveling on the frame, said casing comprising a body embracing said frame and from which the keys project, said body havingends comprising openings through which the carriage may project as it travels beyond the frame, a bellows covering at each end of the casing, a hinged wall of the easing on which the bellows is mounted, and a guide for the bellows mounted upon the hinged wall to swing on the hinge with the bellows.

l. A casing for a typewriting machine having keys, a frame and a carriage traveling on the frame, said casing comprising a body embracing said frame and from which the keys project, said body having hinged ends comprising openings through which the carriage may project as it travels beyond the frame, a bellows covering mounted upon each. of said ends, a guide for the bellows mounted upon each hinged end to swing on the hinge with the bellows, a

hinged front for the casing, and a connection between the hinged front and the hinged ends whereby lifting the front swings the bellows on the hinged ends.

ill casing for a typewriting machine having keys, a frame and a carriage traveling on the frame, said casing comprising a body embracing said frame and from which the keys project, said body having endscomprising openings through which the carriage may project as it travels beyond the frame, a bellows for each end, a bellows frame for each bellows hinged at the bottom. a front cover hinged part-way down the back, arms upon the back of said cover,

an arm upon each bellows frame, a bell crank connected to each bellows frame arm, and a linlr connecting each cover arm to its telhcranlz. V

6. The combination with a typewriting machine having carriage, of a sounddeadening casing for said machine, said casing comprising a central body-portion whose width about equals the length of the "arriage, and also comprising overhanging end-portions projecting therefrom to accommodate the travel of the carriage, and having a slot having about the same length as the travel of the carriage and extending along said central body-portion and terminating between said projecting portions, and a handle projecting through said slot for returning said carriage and elfecting linespacingiy said handle being connected with said carriage, so as to travel to the same extent as the carriage and so as to be positioned substantially opposite the middle thereof, whereby said handle is given clearance in said slot, for accommodating the travel of the carriage.

7. A casing for a typewriting machine having keys, a frame and a carriage traveling on the frame. said casing comprising a front through which said keys project, a baclr and laterally movable ends arranged to accommodate the travel of the carriage, and means, including a cover hinged to said back and connected to said ends, for opening the top of the casing and moving the ends laterally away from the typewriting machine, to give free access to the carriage, by swinging the cover on its hinge.

8. A typewriting machine comprising a. carriage havinga line-spacing and carriage returning mechanism, and a sound-deadening casing in which the typewriting machine is confined, said line-spacing and carriage returning mechanism comprising a handle attached to the carriage to travel therewith, and said casing having a slot throughwhich said handle projects from the interior of the casing, and means to seal up said slot against escape of sound while permitting free travel of the carriage-handle therealong.

rill

to operate the line space lever, closed means to accommodate the carriage ends during the travel of the can go, a handle on said slide for operating it, and means on said slide projecting through a slot in the cover to ()pGl'EltlVfilf, engage a second slide mounted on the carriage and connected to the linespace lever, to enable the handle to operate the lever.

10. The combination with a typewriting -ischine comprising a carriage having a line-spacing and carriage-returning mechanism comprising a handle connected with the carriage to travel.therewith, of a sound deadening casing, in which the typewriting machine is confined, having a slot through which said handle projects from the interior of the casing, said slot being of substantially the length of the carriage travel, and soundsealinp' means to close up said slot while permitt 1c; the travel of the carriage-handle therealong, said sound-sealing means formed of flexible materialand accommodating itself to the traveling movement of the handle.

ll. it casi for a front-strike typewriting machine having keys, a frame, a carriage traveling on the frame, a line-space lever on the carriage, and a slide on said carri connected with said line-space lever, said c sing comprising a' cover, a front transparent section in the cover, a rear transparent section in the cover, a slide running on the cover between said sections, and projectinp; through a slot in the cover, and a forlr on the second-mentioned slide to engage the first-mentioned slide.

A casing for a front-strike typewriting machine having keys, a frame, a platencarrire'e traveling on the frame, said casing comprising a front plate, a rear plate, an en si le chamber at each end, an end plate at each end on which the corresponding chamber mounted, so that each chamber permits the full travel of the carriage in the corresponding direction, each end plate compri ing a solid section covering a large part of the space below the platen, and a hinge for each end plate at the bottom of the cas 1;.

13. A (using for a front-strike typewriting machine having keys, a frame, a carriage traveling on the frame, said casing); comprising a front plate, a back plate, end plates hinged to swing away from said. plates, said end plates having chambers to accommodate the carriage travel, a cover hinged to the back plate and adapted to come down between the end plates, and catches on said cover adapted to hold the en: plates in upright position.

l t. A casing; for a front-strike typewriting machine hea ing;- keys, a frame, a carriage traveling on the frame, said casing comprising a front plate, a back plate, end plates hinged to swing, away from said plates, said end plates having chambers to accommodate the carriage travel, a cover hinged to the back plate and adapted to come down between the end plates, catches on said cover adapted to hold the end plates in upright position, and connections whereby the cover swings the end plates in and out as it shuts and opens. v

15. A casing for a frontstrilie typewriting machine having keys, a frame, a carriage traveling on the frame, said casing, comprising a front plate above the keys, a bacl: plate, a bottom plate adapted to fit the legs of the typewriting machine frame, a bar fast to said bottom plate, devices for holding the front and back plates to the bar, hinges on the bar, and end plates swingable on the hinges, said end plates having chambers to accommodate the carriage travel.

16. The combination with a typewriting machine having a traveling carriage, of a casing comprising a central portion to contain the machine w 1611 the carriage is in substantially central position, and extensible side portions to accommodate the carriage when moved in either direction from its central position.

17. The combination with a uypewriting machine having a traveling carriage, of a casing comprising a central portion to COI1 tain the machine when the carriage is in substantially central position, extensible side portions to accommodate the carriage when moved in either direction from its central position, and a device yieldably urging each of said extensible portions to contracted condition, said device being); of such strength as to be readily overcome by the carriage.

18. A typewriting machine confined by the walls and top of a soun-: l-proof casing, and comprising a lreyboardcontaining baseportion extending; forwardly through an opening; in the front of said casing, said keyboard comprising keys mounted on key levers, a guideeomb for said hey-levers, a mat of soundabsorbing material under the key-levers, and a sound-absorbing baffle or partition rising from said mat and extending to said guide-comb, and co-operative therewith to reduce or prevent escape of noise through said front opening in said casing.

19. A. sound-deadening casing for a typewriting machine, having a traveling carriage comprising an open-ended body portion to contain the typewriting machine when the carriage is in central position, end portions to receive the carriage when shifted from its cent 'al position and to close the ends of said body portion, and means to pivotally support said end portions to enable them to be shifted from effective to ineffective positions and vice versa.

20. A sound-deadening casing for a typewriting machine, having a traveling carriage, comprising an open-ended body portion to contain the machine when the carriage is in central position, said body portion includ ing a top movable to and from effective positions, shiftable end portions to receive the carriage when shifted om its central posh tion and to close the ends of said body portion, and means whereby said top when moved to pos on to close the upper part of the casing will lock the end portions in closed positions.

It so1n1d-deadening casing for a typewriting machine, having a traveling carriage, comprising an open-ended body portion having a shiftable cover, pivoted end portions to receive the carriage when shifted from its central position and to close the ends of said body portion, and means for latching said end portions in closed relation, said latching means being rendered inaffective by shifting the cover to open the top of said body portion.

22. ihe combination with a typewriting machine having a carriage, of a sound-deadening casing for said machine, said casing including a central bodyportion and overhanging end-portions projecting therefrom to accommodate the travel of the carriage, and also including a movable cover-portion, said casing having a slot extending parallel to the direction of carriage travel, a handle projecting through said slot to the exterior of said cover for returning said. carriage and effecting line-spacing movements, and soundarresting means formed of flexible material and extending along said slot, to close up the same against escape of sound while permitting the handle to travel freely.

23. The combination with a sound-deadening casing for a typewriting machine, said casing having an opening through which the keyboard of the typewriting machine projects and comprising a hinged top and ends, of means whereby the opening of the hinged top will cause the ends to be swung away from the machine.

24. In combination, a typewriting machine con'iprising a forwardly-extending portion containing a keyboard, said keyboard comprising keys mounted on key-levers, a guidecomb for said key-levers, a sound-arresting floor under the keylevers, a sound-arresting partition or baflle rising from said floor and in engagement with said guideeomb, and a souml-deadening casing enclosing said typewriting machine and having a lower front opening through which the keyboard-containing portion of the typewritingmachine extends, the upper part of said guide-comb closely engaging the casing above said lower front opening when the typewriting machine is properly positioned in the casing.

25. In combination, a. typewriting machine comprising a forwardly-extending portion containing a keyboard, said keyboard comprising keys mounted on key-levers, a guidecomb for said key-levers, a sound-arresting floor under the key-levers, a sound-arresting partition or baflle rising from said floor and in engagement with said guide-comb, and a carriage, a sound-deadening casing enclosing said typewriting machine and having a lower front opening through which the keyboard-containing portion of the typewriting machine extends, said casing comprising a body-portion, a cover and end-portions to accommodate the ends of the carriage when moved from a central posit-ion, said endportions closely engaging the side edges of said floor,

26. A typewriting machine confined in a sound-deadening casing, comprising a frame supported by removable feet and having a keyboard-containing portion extending forwardly through an opening in the front of the casing, the keyboard comprising keys mounted on key-levers, a guide-comb for said key-levers, and a sound-arresting partition or baffle under the key-levers in proximity to said guide-comb to reduce or prevent escape of noise through said front opening in the casing, said baffle being placed against the base of said frame and held thereon by said foot.

27. A typewriting machine confined in a sound-deadening casing, comprising a frame supported by removable feet and having a keyboard-containing portion extending for-v wardly tl'irough an opening in the front of the casin the keyboard comprising keys mounted on key-levels, a guide-comb for said key-levers, and a sound-arresting partition or ballle under the key-levers in proximity to said guide-comb to reduce or prevent escape of noise through said front opening in the casing, said baffle being placed against the base of said f nine and held thereon by said feet, said baille being in the form of a pan to give suitable clearance beneath said keylevers.

28. The combination with a typewriting machine, having a letter-spacing carriage, of a noise-deadening casing for the noise-producing portion of said machine, said casing comprising a central portion and extensible end portions to permit the carriage to travel to either side of its central position, said central portion having a slot extending therealong adjacent said carriage and parallel to the path of the latter, and a carriageretnrn device comprising a member extend ing through said slot, a connection between said member and the carriage, whereby said a ii memloer is substantially opposite the middle of the carriage irrespective of the position of the latter, and a finger-piece entsideot said casing connected With said member to actuate the same and thereby shift the carriage.

29. The combination with Ia typewriting machine, havim letter-spacing carriage, of a noise-deadening casing tor the noise-prodncinn' portion of said machine, said casing compris ng a centr: 5 portion and projecting: end portions to' permit the Ciit'it to travel to either side of its central position, said central portion having a therealongz; adjacent said carriage and parallel to the path of the latter, a carriageretnrn device comprising a member extending throngh said slot, a connection between said member and the carr age such that said member is maintained snbstantially opposite the middle of the =arriage, and a iingenpiece outside of said casing; connected with said member to actuate the same and thereby shift the carriage, and closure means Whereby said casing Will be kept closed along; sa'd slot irrespective of the position 0t said carriagereturn device.

30. The combination with a typewritingg machine, having a letter spacing can-n ofanoise-deadening casing for the noiseprodncing portion of said machine, said casing; coi'i'iprisinpg a central portion and projecting end portions to permit the carriage to travel to either side of its central position, said central portion having a slot extending thercalong adjacent said carriage and parallel to the path. of the latter, acarriagewturn device comprising a m mber extent i through said slot, a conne on between said member and the carriage, and a fing rpiece outside of said casing connector with said member to actuate the same ant. thereby shift the car'iage, and closure means for said slot comprising a flexible strip of sonnd-deadeningg material having its ends attached to said member adjacent said slot and passing around guiding devices at the ends of the slot 31. The combination machine, having a lett aspacing car iage, of a noise-deadening casing for the noise-producing portion off said machine, said casing comprising central portion and projecti end portions to permit the ca lilflfe to trz to either side oi? central position, central portion having a slot extending therealong adjacei'it said carriage and par allel to the path of the latter, a carriag -re turn device comprising a member or. ing: through said slot, connection be said member and the carriag' and ting piece outside of said caring; connec ti ni said member to actuate the same a d tner shift the carriage, and closure means said slot comprising fiexlbie strips ot soundslot exten ding h a typewriting' d adening material having ends thereof at tached to said member on opposite sides {copious will he sunoe other side will be lying;

on one side oi plied and the strip on talrcn up, in accordam'e will) the it the portions of the slot on opi l nien'lher. ,zition with a typewriting machine, having a ietter-spacingr carriage and a illltE-HPLU? and care lever therefor, ot a noise-deadening car i noiseprodncing portion of sai said casing;- comp is a central portion and projecting end portions to permit the can riage to travel to either side of. its central position, said central portion having a slot extending there-along adjacent said carriage and parallel to the path of the latter, a member extending through said slot, a connection between said member ane said linespece and carriage-return lever such that said member sub.-.-;tantially oppesite'the middle of the carriage irrespective of: the position of the latter, and linger-piece outside of said casing connected with said member to actuate the and thereby operate said lever.

33. A tlOlllltl-(iOEtClOHlP f casing for a ty' writi n'lachinc, aoniprr 41in so to receive the machine when the ca riage is central pcnmion, auxiliary sections said main section to receive the car ien moved from its 1 means to hold said dry sec-irons in closed position on the ection, s id means being releasahle positio: s.

3 The co ination with a tyoewriting machine lit p a carriage, of a oln'1d-dea-:lening casing for said machine, an opera device on said carriage, said casing having a slot parallel with the ri operating (lGv'HIG e2;-

through which said tends, and mea s tra eratinp; device to close up the escape ct sound theret 35A The combinat on Wit machine having '3 0 ing therefor having a slot and also comprising a sonnd-lniiilingz; portion to meet a portion of the typewr' niacin a prevent local escape of sound, ing a carriage, and calil I iclrne comprisc oneratino han- L7 die pro ect through said sot, said casing 5 tchine relatively to said slot The combination with an element comiii) all

prising a typewriting machine, of a sound.- deadening element comprising a casing for said typewriting machine and also comprising a bottom or floor portion under the typewriting machine, the typewriting machine having a front keyboard portion projecting from the casing and having key-levers, and also having a front downwardly-extending guide-comb for said levers, and a noiseconfining balile or partition rising from said floor portion to meet said comb.

37. In combination, an element comprising a typewriting machine having machinelocating feet and provided with carriage, an operating handle for said carriage, and a sound-deadening element comprising a. casing for said typewriting machine, said cas; ing having a slot for Sflll handle, and said casing also cmnprising a floor of sounddeadening material, id floor secured to the remainder of the casing, means confiningsaid feet upor i in floor in a predetermined lateral posit and loci" the typewriting machine ac ncly within said casing relatively to said J 38. The combination with the frame of a typewriting machine, of a sound-mullling pad underlying the same, and means adjustably connected to the frame and engaging the pad to force the same into firm contact with the edges of the frame between the corners thereof, thus closing the bottom of the frame.

39. A sound-absorbing pad for typewriting machines, comprising a frame of substantially the contour of the machine base, a sound-absorbing mat therein, feet of elastic material carried by the frame, and means for attaching the feet to the frame and for attaching the pad to the machine.

40. The combination of a typewriting machine and a frame adapted to be secured thereunder and extending between the corners thereof, a mat associated with one side of the frame for absorbing sounds created in the operation of the machine, and a plurality of rubber feet associated with the other side of the frame for cushioning the typewriting machine.

ll. The combination with the base of a typewriting machine, of a soiind-muflling pad underlying the same, and extending between the corners thereof, said pad comprising a frame and a mat associated therewith, and means engaging the base to draw the pad into close Contact with the edges thereof.

42. The combination with the base of a typewriting machine, of a sound-muflling pad underlying the same, and extending between the corners thereof, said pad comprising a frame, a mat on one side thereof, and

noonsoa rubber feet on the other side thereof, and means engaging the base to hold the feet in place and draw the pad into close contact with the edges of said base.

43. The combination with a typewriting machine, of a sound-mull'ling pad in the form of a floor under said machine, said floor comprising a layer of sound-mullling material, a layer of stiffening material, and means to secure said layers to said machine.

44. The combination with a typewriting machine, of a soundmufliing pad in the form of a floor under said machine, said floor comprising a layer of soui'id-mullling material, a layer of stiffening material, and means for both securing said layers and saidmachine and elastically supporting said machine and said layers upon a desk or table.

The combination with a typewriting machine, of a soundanutlling pad in the form of a lloor under said machine, said floor comprising a layer of sound-mull'ling material, a layer of stiffening material, and means for elastically supporting said machine and said layers upon a desk or table; said machine, said layers and said elastic supporting means being all secured together.

l6. The combination with a typewriting machine having a paper-carriage, of a noisecontining cabinet in which said typewriting machine is contained, said cabinet comprising a top having a runway or slot extending longitudinally thereof, and a carriage-con trolling handle device connected at its lower end to the carriage and extending up through said runway, said top also having an inclined window in front of said runway and also comprising in rear of said runway a rear chamber above the carriage to accommodate portions of worksheets extending upwardly and backwardly from the carriage.

47. A sound-deadening casing for a type writing machine having a framework and a carriage, said casing comprising a central portion with carriage-accommodating openings in the sides thereof, and automatically collapsible bellows portions covering said openings and enpansible by the carriage as the carriage is moved from its central position.

48. A combined typewriting machine and sound-proof casing fastened thereon, said typewrit-ing machine having a keyboard projecting from said casing and including a carriage, and said casing including a chamber of dimensions to accommodate the travel of said carriage, said chamber being collapsible to bring it into compact relation with said typewriting machine.

BURNHAM C. STICKNEY.

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