US1499709A - Typewriting machine - Google Patents

Description

Jul 1, 1924.

J. WALDHEIM TYPEWRITING MACHINE File N 13. 1920' 2 Sheets-Sheet 1 July 1, 1924.

J. WALDHEIM TYPEWRITING MACHINE Filed Nov. 13. 1920 2 Sheets-Sheet 2 I KN I n- N. \N q .l I I a I I. "m a u w Q Y M Q g hm sh a 7 NJ *& I

//7 yenfar- M Kai Patented July 1,1924.

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JOHN WALDHEIM, or ELIZABETH, NEW JEEsEY, ASSIGNOR TO UNDERWOOD TYPE- WRITER COMPANY, or NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITING MACHINE.

Application filed November 13, 1920. Serial No. 423,848.

To vazZZ whom it may concern:

Be it known that I, JOHN l/VALDHEIM, a

citizen of the United States, residing in Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

This invention relates to noise-reducing devices for typewriting machines. The invention comprises, in combination with a typewriting machine having features cooperative therewith, a sound-proof or noisedeadening casing for enclosing the noiseproducing parts of the machine, while the keys and other parts of the machine used in its operation project from the casing.

As a feature of the invention, a hinged cover is provided, and there is also provided a longitudinal sealed slot through which there may project a finger-piece of a combined line-space and carriage-return member, and alsothrough which there may project a finger-piece belonging to a cornbined carriagerelease and carriage-moving member. The arrangement is such that the cover may be swung upwardly and rear wardly away from said finger-pieces.

As further features of the invention, the front edge of the cover may extend down to a line below parts of the machine to which it is necessary to have access from the front, such as the usual adjustable margin-stops, and also the cover may have a transparent light-admitting section or window at the rear of the slot for illuminating the work and permitting the latter to be viewed by the typist, and a transparentlycovered sightopening or viewing-window may be provided in the lower front margin of the cover forwardly from the slot to permit the usual scale and the margin-stops to be seen by the typist.

Another feature of the invention comprises yieldable means, such as cushionstrips, for sealing the slotaround said finger-pieces, while providing for the free movement of the finger-pieces in the slot.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure l is a perspective view of an Underwood typewriting machine embodying the present invention, with the cover of the sound-deadening casing in the closed osi tion in whlch the typing operation takesplace.

central vertical sectional view, with the cover of the casing closed and with parts of the typewriting machine shown'in outline and other parts omitted.

Figure 4c is an enlarged perspective view of the carriage-releaselever, together with the end parts of the. releasable carriagefeeding rack-bar to which this lever is connected, the angle of view being about the same as in Figures 1 and 2.

Figure 5 is an enlarged combined perspective and front-to-rear vertical sectional view of the slot-closing cushion-strips and their immediate adjuncts, this view being from about the same angle as in Figure, 1.

Figure 6 is a partial plan view showing, in transverse section, the cross-sectionalshape of the finger-pieces where they pass between the slot-sealing strips. I

In the Underwood standard typewriting machine, in which the invention is shown as embodied,- character-keys 1 are carried by the forward free ends of key-levers 2, which, when depressed, operate bell-crank levers 3, to swing type-bars 4 upwardly and rearwardly to bring types 5. carried thereby, "to the printing point at the front of a rotative platen 6, journaled in a letter-feeding carriage 7, having letter-feeding traveling movement on the main: frame 8. At each actuation of one of the keys 1, the platencarrying carriage 7 is permitted to be drawn along one letter-feeding space or step through suitable mechanism, all of which is not shown, but which is well understood, in the art, and which includes an escapementwheel 9 and a pinion 10 engaging the lower toothed side of a releasable rack-bar 11, having forwardly-extending arms. 12, pivoted at 13 on the carriage 7, providing for the lift Figure 2 is a similar view with the cover ing of the rack-bar 11 to release the carria e.

At the right side of the machine, the 'rac bar-arm 12 is continued, beyond thepivot l3, upwardly. and forwardly to form a carriage-re-lease lever 14, which at its forward end is extended to overlie the front part of the carriage 7, and also (just at the front of the carriage) to form an upwardly directed slightly rearwardly-curved member 15 projecting up through slot 35 and provided at its projecting end with a fingerpiece 15. This carriage-release lever extension 14 has irregular bends or turns in order to be accommodated to other adjacent parts of the carriage, casing and slot, as shown in full lines in Figure 1 and in dot-and-dash lines in Figure 3. The extension 15 moves in substantially a single vertical plane whether traveling with the carriage or moving up and down. When the carriage-release lever is depressed by actuating its fingerpiece 15, it is evident that the rack-bar 11 will be lifted clear of the pinion 10, thereby permitting the carriage to be freely moved by means of the finger-piece 15 in either direction to any point desired and there set, The part 15 is forked, the left-hand vertical portion being in the nature of an eXterior handhold for controlling the movements of the released carriage. The depressed portion between the forks constitutes a key for releasing the carriage.

The platen 6 may be line-spaced in the usual way by means of suitable line-spacing mechanism, well understood in the art, all of which is not shown, but including a laterally-movable combined line-space and carriage-return lever 16, provided at its forward end, above and just in front of the carriage .7, with an upstanding and slightly rearwardly-curved finger-piece 17 which, for a' urpose which will hereinafter appear, is located laterally in line with the fingerpiece 15 of the combined carriage-release and carriage-moving lever 14:, both of these linger-pieces projecting upwardly to a considerable height for a purpose which will also presently appear. As is usual in the standard Underwood typewriting machine, the lateral line-spacing movement of the line-space lever16 is limited by means of a loop 18 on the carriage 7 and through which this lever projects. Also as usual, when the line-space lever 16 is moved towards the right, it operates first to linespace the platen 6 and then to return the carriage 7 towards the right for the begin ning of a new line.

The travel of the carriage in each directionmay be limited, in the usual manner, by means of usual margin-stops 19, adjustably slidable along a rod 20 on the machine frame 8, at the front thereof, and being movable relatively to the usual scale 21,, along which moves the usual pointer 22 of the carriage 7, each margin-stop. 19 being shown as provided with a pointer 23 and with finger-pieces 2-1.

The typewriting machine rests upon a sound-deadening base 25, which virtually forms a bottom for the sound-suppressing or iaeavoe noise-deadening casing which further comprises a body part having a front wall 26, a back wall 27 and end walls 28, each of which latter, in its upper part, juts out or is provided with an offset portion 29, in order to provide for the traveling movement of the carriage 7 in both directions beyond the main frame 8.

The front wall 26 of the casing terminates at some little distance below the scale 21 and margiirstops 19, while the back wall 27 extends upwardly to a line a little above the top of the carriage 7. A cover 30 is hinged at 31 to the top of the back wall 27, and, from its hinge 31, the cover 30 extends upward and forward and then downward in substantially a semi-circle to a line above the front part of the carriage 7, just above the forwardly-extending combined line-space and carriage-return lever 16, and, similarly, just above the combined carriage-release and carriage-moving lever 14:, and at the rear of the upstanding finger-pieces 17 and 15, respectively, of these two levers. From this line, the cover 30 extends,at substantially a right angle, horizontally forward to a line at the front of the finger-pieces 15 and 17, and thence curves downward to provide a downwardly-extending lower margin which over-laps upon the outside of the upper margin of the front casing wall 26. The casing and walls 28 at their upper edges are comformed in contour to the shape of the cover 80, and are shown as flanged inward so as to make a tight oint therewit as appears in Figure 2.

At the front, the semi-circularly curved or domelike part of the cover 30 is provided with a closed light-admitting window, which is formed by a transparent plate 32, for admitting light upon the work-sheet, at and above the printing line thereon, in order to enable the typist to see her work as it progresses. To enable her to see the scale 21 and the margin stops 19, a smaller closed window, formed by a curved transparent plate 33, is provided in the lower margin of the cover 80, and extends upward from near the lower edge of the cover 30 to a line almost over the scale 21. At its lower margin, the cover 30 is provided with a handle-knob 34 by which it may be conveniently swung upward and backward to its open position, shown in Figure 2. When the cover is in this open position, it is to be noted that free access is to be had not only to the carriage 7 and platen 6, for changing work-sheets, but also to the devices to which access must be had from the front of the machine, such as the adjustable 7 part of the cover descends.

the upstanding finger-pieces 15 and 17 pro je'ct when the cover 30 is in the closed position. Each of these finger-pieces is slightly curved rearwardly on an arc the center of which is the axis of the coverhinge 31, as most clearly appears in Figure 3, thereby providing for opening and closing movements of the cover 30 together with a minimum width of the slot As the cover 30 is raised from the closed to the open position, it will rise above the finger-pieces 15 and 17, and then, in the closing movement of the cover, these finger-pieces will again pass through the slot 35 as the forward The slot 35 provides for lateral or longitudinal linespacing and carriage-return movements of the finger-piece 17 of the combined linespace and carriage-return lever 16, and also the slot 35 provides for both vertical carriage-releasing movement and horizontal carriage-adjusting movement of the upstanding forked finger piece 15 of the combined carriage-release and carriage-moving lever 14. It will be clear, particularly from an inspection of Figure 1, that both of these finger-piece may be easily manipulated with the casing cover 30 in the closed position.

In order to prevent the escape of sound through the slot 35, this slot is closed by means of flexible or yieldable cushion-like slot-sea1ing members of strips 36 which close around, but do not materially impede the traveling or other movements of, the fingerpieces, and maintain a constant seal all along the slot. These slot-closing strips or lips 36, which may be formed of suitable folded or looped weak material, such as plush, felt, soft leather or the like. Preferably the flexible lips 36 are in the form of tubes and are bent away from the slot andheld in such positions by engagement with each other. These slot-closing strips 36 may'rest upon an underlying slotted base-plate 37, which lends rigidity to the cover 30 around the slot 35, and these strips 36 may be clamped in place at their margins by means of clampestrips 38, held in place on the cover 30 by means of small screws 39, providing for the easy renewal or replacement of the sealing-strips 36. In order that-the locally yieldable sealing-strips 36 may effect a close seal around the projecting finger-pieces 15 and 17, the stem portions of these finger-pieces, where they pass between the sealing-strips 36, are made of rounded cross-sectional contour with plow-like edges, as is shownin Figures 4 and 6, illustrating the stem part 15 of the finger-piece 15, it being understood that the stem portion of the finger-piece 17 is of a similar shape at the place where it passes out-ward between the, yieldable sealing-strips 36.

Since the carriage-releasing extension 15 moves substantially in a single vertical plane- (as does also the line-spacing and carriagereturning handle 17), a sufficiently narrow slot 35 is rendered practicable, and retardation from the sealing lips is minimized.

As a further means for deadening the sound, the casing, including the cover 30 thereof, is provided with a lining 4 0 of suitable sound-insulating material, such as felt. In the front wall 26 of the casing, openings are provided through which project the usual line-lock release-key 41 and the usual bic'hrome ribbon-shift 'key 42. Also, the lower forwardly-projecting part of the main frame 8, in which are located the type-keys 1 and the usual letter-space'bar 43, projects through the front casing wall 26 for the actuation of the keys 1 and space-bar 43 in the usual typing operation. 7

Variations may be 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: 1

1. The combination of asound-deadening casing and a ty'pewrit-ing machine therein comprising a carriage, a combined linespace and carriage-return member on the carriage and having an upwardly-extending finger-piece at the front of the carriage and at one end thereof, and a combined carriagerelease and carriage-return member on said carriage and having an upwardly-projecting finger-piece at the front of the carriage and at the other end thereof, said casing comprising a body-portion surrounding'said machine and a cover hinged at its rear 011 said body-portion and provided in its front portion with a slot to receive said finger-pieces when the cover is swung down to closed position, said slot being parallel to the direction ofcarriage travel and of a length greater than that of the carriage travel, to, permit the carriage to be moved to its limit ing positions.

2. The combination of a sound-deadening casing and a typewriting machine therein comprising a carriage, a combined line-space and carriage-return member on. the carriage and having a finger-piece extendin therefrom at the front of thecarriage and at one end thereof, and a combined carriage-release and carriage-return member on said carriage and having a finger-piece projecting therefrom at the front of the carriage and at the other end thereof, said fingerpieces upstanding, said casing comprising a body-portion surrounding said machine, a cover hinged at its rear on said body-portion and provided at its front portion with a slot to receive said finger-pieces when the cover is moved to closed position, said slot being parallel to the direction of carriage travel and of a length greater than that of the carriage travel, to permit the carriage to be moved to its limiting positions, and slot-sealing means for maintaining the sealing of the slot while permitting the movement of the finger-pieces therealong.

3. The combination of a sound-deadening casing and a typewriting machine therein comprising a carriage, a combined line-space and carriage-return member on the carriage and having a finger-piece extending therefrom at the front of the carriage and at one end thereof, and a combined carriage-release and carriage-return member on said carriage and having a finger-piece projecting there from at the front of the carriage and at the other end thereof, said finger-pieces upstanding, said casing comprising a body-portion surrounding said machine, a cover hinged at its rear on said body-portion and provided at its front portion with a slot to receive said finger-pieces when the cover is moved to closed position, said slot being parallel to the direction of carriage travel and of a length greater than that of the carriage travel, to permit the carriage to be moved to its limiting positions, and slot-sealing means comprising flexible material which is caused to yield locally by said finger-pieces as they move along the slot.

4:. The combination of a sound-deadening casing and a typewriting machine therein comprising a carriage, a combined line-space and carriage-return member on the carriage and having a finger-piece extending therefrom at the front of the carriage and at one end thereof, and a combined carriage-release and carriage-return member on said carriage and having a finger-piece projecting therefrom at the front of the carriage and at the other end thereof, said finger-pieces upstanding, said casing comprising a bodyportion surrounding said machine, a cover hinged at its rear on said body-portion and provided at its front portion with a slot to receive said finger-pieces when the cover is moved. to closed position, said slot being parallel to the direction of carriage travel and of a length greater than that of the carriage travel, to permit the carriage to be moved to its limiting positions, and slotsealing means comprising flexible lips on opposite sides of the slot and caused to yield locally by said finger-pieces during movement of the carriage.

5. The combination of a sound-deadening casing and a typewriting machine therein having a traveling carriage, a combined linespace and carriage-return member on the carriage provided with an upwardly-projecting finger-piece at the front of the earriage, a combined carriage-release and carriage-moving member on the carriage pro vided with an upwardly-projecting fingerpiece at the front of the carriage and in transverse alignment with the first-mentioned finger-piece, and settable devices at the front of the machine beneath said fingerpieces, said sound-deadening casing comprising a body-portion surrounding the machine and a cover hinged at its rear to said body portion and provided with a slot parallel with the direction of carriage travel to receive said finger-pieces when the cover is moved to closed position, said cover having a transparent portion at the rear of said slot to enable work in the machine to be viewed and a transparent portion forward of said slot to enable said settable devices to be viewed.

6. The combination with a typewriting machine having a traveling carriage and a combined line-space and carriage-return member movably mounted on the carriage and having a finger-piece projecting upward from the front of the carriage, of a sounddeadening casing for the typewriting machine comprising a body-portion surround ing the machine, a cover hinged at the back to said body-portion and provided with a slot parallel to the path of carriage travel, to receive said finger-piece when the cover is closed, and means to maintain said slot sealed on each side of said finger-piece while permitting movement of the latter along the slot.

7 The combination with a typewriting machine having keys, a frame, a letter-spac ing carriage traveling on the frame, and a combined line-space and carriage-return member movably mounted on the carriage and having a finger-piece projecting upward from the front of the carriage, of a sounddeadening casing for the typewriting machine and from which the keys thereof project, said casing comprising a body-portion surrounding the machine, a cover hinged at its back to said body-portion and provided in its forward part with a longitudinal slot through which, when the cover is closed, said finger-piece projects for manipulation, and providing for the raising of the cover away from said finger-piece as the cover is opened and for the passage of said finger-piece through said slot again as the cover is closed, and means including yieldable lips on opposite sides of the slot for sealing the latter in closed condition while permitting the movement of said finger-piece.

8. The combination with a typewriting machine having keys, a frame, a letter-spacing carriage traveling on the frame, a combined line-space and carriage-return member movably mounted on the carriage and having a finger-piece projecting upwardly from the front of the carriage, and devices to which access is to be had from the front of the machine, of a sound-deadening casing for. the typewriting machine and from which the keys thereof project, said casing comprising a body part having front and back and end walls, and a cover part hinged to the top of the back wall and provided in its upper and forward part with a longitudinal slot through which, when the cover is closed, said finger-piece projects for manipulation, and providing for the raising of the cover away from said finger-piece as the cover is opened and for the passage of said fingerpiece through said slot again as the cover is closed, the front edge of said cover extending below said devices at the front of the machine, so as to give access thereto when the cover is opened, said cover having a transparent portion rearward from said slot to permit the work to be viewed therethrough and a transparent portion forward from said slot to permit said devices to be viewed.

9. The combination with a typewriting machine having keys, a frame, a letterspacing carriage traveling on the frame, a combined line-space and carriage-r turn member movably mounted. on the carriage and having a finger-piece projecting upwardly from the front of the carriage, and devices to which access is to be had from the front of the machine, of a sound-deadeir ing casing for the typewriting machine and from which the keys thereof project, said casing comprising a body part having front and back and end walls, a cover part hinged to the top of the back wall and provided in its upper and forward part with a longitudinal slot through which, when the cover is closed, saidfingeriece projects for manipulation. and providing for the raising of the cover away from said finger-pine as the cover is opened and for the passage of said finger-piece through said slot again. as the cover is closed, the front edge of said cover extending below said devices at the front of the machine, so as to give access thereto when the cover is opened, said cover having a transparent portion rearward from said slot to permit the work to be viewed and a transparent portion forward from said slot to permit said devices to be viewed, and yieldable cushion-means for sealing said slot in closed condition while providing for manipulation of said projecting finger-piece.

10. The combination of a sounddeadening casing and a typewriting machine enclosed therein and comprising carriage escapement mechanism and carriage-release mechanism, said casinghaving a slot extending in the direction of the travel of the carriage, said carriage-release mechanism including a carriage-release key movable along the slot with the carriage and mounted on the latter for movement inwardly and outwardly through said slot to determine the connection and disconnection of said carriage, the traveling and the carriage-releasing movements of said key being in substantially a single plane.

11. The combination with a typewriting machine comprising a carriage, of a sounddeadening casing for the typewriting machine, said casing having a slot therein, a manually-operable device extending from said carriage through said slot, and a locally-yieldable strip extending alongsaid slot and sealing the latter and adapted to be pressed aside locally by said manually operable device, while maintaining a seal elsewhere, and the carriage being movable without material oppositionfrom said strip. 7 I j 12. The combination with a typewriting machine comprising a carriage, of a sound-v deadening casing for the typewriting machine, said casing having a slot therein, a plurality of independently operable finger pieces on said carriage extending through said slot, and yielding means keeping the slot sealed, while permitting free movemen of said finger-pieces and carriage.

13. The combination .of a typewriting machine and a, sound-deadening casing therefor, said machine including a carriage within the casing, a slot insaid casing, an actuable finger-piece extending from said carriage through said slot to travel along the same and a pair of strips extending along said slot to keep the latter sealed, said strips having eacha weak construction to yield locally where engaged by the fingerpiece, to permit free travel of the carriage.

14. A sound-deadening casing for a typewriting machine having a carriage, said casing provided with a slot extending in thedirection ofthe travel of the carriage,

and with locally yielding lips between. a.

which travels a finger-piece which projects from the carriage through'said slot.

15. A sound-deadening casing for a typewriting machine having a carriage, said casing provided with a slot extending in the direction ofthe travelof the carriage, and with locally yielding lips between which travels a finger-piece which projects'from the carriage through said slot, said lips in the form of tubes. V e I 16. A sound-deadening casing for a typewriting machine having a carriage, said casing provided with a slot extending in the direction of the travel of the carriages, and with locally yielding lips between which travels a finger-piece which projects from the carriage through said slot, and means for clamping the lips to the casing in a'manner to permit their detachment for renewal.

17. The combination of a sound-deadening casing having a typewriting machine confined therein and having a carriage, and a handle connected to said carriage tooperate the same, said casing having a slot through which said handlev projects, and means for holding said slot-sealed, said sealing means comprising'a flexible lip'which' 18. The combination of a sound-deadening casing having a typewriting machine confined therein and having a carriage, and a handle connected to said carriage, said casing having a slot through which said handle projects, and means torholding said slot closed, said closing means comprising a :tlexible lip which is caused to yield locally y said handle as it travels along the slot, said lip in the form of a soft tube.

19. A sound-deadening casing enclosing a typewriting machine having a carriage, said casing having a slot extending from end to end of the casing, the length of the slot being substantially greater than the travel of the carriage, said carriage having at its ends finger-pieces projecting through said slot, and flexible means sealing the slot constantly against the escape of sound while permitting the separated finger-pieces to travel along said slot.

20. A sound-deadening casing enclosing a typewriting machine-having a carriage, said casing having a slot extending from end to end of the casing, said carriage having finger-pieces projecting through said slot, and flexible means sealing the slot against the escape of sound, said casing formed of a body and a cover part hinged together, and constructed so as to leave said finger-pieces exposed when the cover is lifted.

21. The combination of a sound-deadening casing and a typewriting machine enclosed therein and comprising a carriage, a combined line-spacing and carriage-return finger-piece extending from said carriage at one end, and a finger-piece at the other end of the carriage for returning the latter without line-spacing, said casing having slot to receive both of said finger-pieces and of a length substantially greater than that of the carriage travel so as not to obstruct the finger-pieces when the carriage is moved to either of its limiting positions, said casing also being provided with constantly slotsealing means, comp "ising a locally yieldable lip attached to said casing and caused to yield locally by said finger-pieces as the latter are moved. along said slot.

22. The combination of a sound-deadening casing and a typewriting machine enclosed therein and comprising a carriage, and a combined linc-spacingand carriagereturn finger-piece extending from said carriage, said casing having a slot to receive said finger-piece, said casing also being provided withslot-sealing means comprising two flexible locally yielding lips secured on the casing on opposite sides of the slot and turned away from the latter and leaning against each other.

23, The co mb1nat1on of a sound-deadening casing and a typewriting machine en-v closed therein and comprising a carriage,

a combined line-spacing and carriage-return finger-piece extending from said carriage at one end, and a finger-piece at the other end of the carriage for returning the latter without line-spacing, said casing having a slot to receive both of said finger-pieces and of a length substantially greater than that of the carriage travel so as not to obstrut the finger-pieces when the carriage is moved to either of its limiting positions, said casing also being provided with slot-sealing means comprising two locally yieldable flexible lips, said finger-pieces comprising thin portions to move along said slot, said thin portions being beveled gradually from the middle towards the edges thereof to avoid abrupt bencs in the lips adjacent said finger-pieces.

2a. The combination of a sound-deadening casing and a typewriting machine enclosed. therein and comprising a carriage, line-spacing mechanismthereon, and carriage-release mechanism, said casing having a slot extending in the direction of travel of the carriage, said line-spacing mechanism including a handle extending through said slot and so mounted on the carriage that, when actuated, it will move along said slot relatively to the carriage, and said carriagerelease mechanism including a carriage-release handle extending through said slot and so supported on the carriage that it may be moved inwardly and outwardly through said slot to control the carriagerelease mechanism.

25. The combination of a sound-deadening casing and a typewriting machine enclosed therein and comprising a carriage, line-spacing mechanism thereon, and carriage-release mechanism, said casing having a slot extending in the direction of travel of the carriage, said line-spacing mechanism including a handle extending through said slot and so mounted on the carriage that, when actuated, it will move along said slot relatively to the carriage, said carriagerelease mechanism including a carriage-re lease handle extending through said slot and so supported on the .carriage that it may be moved inwardly and outwardly through said slot to control the carriagerelease mechanism, said casing being provided with means for sealing said slot cornprising a flexible lip which is caused to yield locally by said handles as they travel along the slot.

26. The combination of a sound -deadening casing and a typewriting machine enclosed therein and comprisinga carriage, line-spacing mechanism thereon, and carriage-release mechanism, said casing having a slot extending in the direction of travel of the carriage, said line-spacing mechanism including a handle extending through said slot and so mounted on the carriage that,

when actuated, it will move along said slot relatively to the carriage, said carriage release mechanism including a carriagerelease handle extending throu h said slot and so supported on the carriage that it may be moved inwardly and outwardly through said slot to control the carriagerelease mechanism, said casing being provided with means for sealing said slot comprising flexible lips between which the handles travel and cause said lips to yield locally.

27. The combination of a sound-deadening casing and a typewriting machine enclosed therein and comprising a carriage, linespacing mechanism thereon, and carriage and so supported on the carriage that it may be moved inwardly and outwardly through said slot to control the carriage-release mechanism, said casing being provided with means for sealing said slot comprising flexible lips in the form of tubes between which the handles travel and cause said lips to yield locally.

28. The combination of a sound-deadening casing and a typewriting machine enclosed therein and comprising a carriage, said casing having a slot extending in the direction of tralvel of the carriage, said carriage having thereon an operating handle extending through said slot and movable with the carriage along said slot and so mounted on the carriage that it may be moved inwardly and outwardly through said slot to effect its function.

29. The combination of a sound-deadening casing and a typewriting machine enclosed therein and comprising a carriage. said casing having a slot extending in the direction of travel of the carriage, said carriage having thereon an operating handle extending through said slot and movable with the carriage along said slot and so mounted on the carriage that it may be moved inwardly and outwardly through said slot to effect its function, said sounddeadening case being provided with means whereby said slot is sealed on each side of said handle irrespective of the position of the carriage.

30. A sound-deadening casing for a typewriting machine having a carriage and a finger-piece projecting therefrom, said casing being provided with a slot to receive said finger-piece and extending in the path of travel of said carriage, and with means to seal said slot comprising a yielding lip and a cooperating member between which said finger-piece travels, said lip being turned outwardly and leaning against said member.

31. The combination with a typewriting machine comp-rising a carriage, of a sounddeadening casing for the typewriting machine, said casing having a slot extending in the direction of carriage travel, a fingerpiece supported on said carriage and extending through said slot, and a flap or yieldable lip extending along said slot to seal the latter and to be pressed aside by said finger-piece as the latter moves along said slot, said finger-piece having a thin portion passing through said slot and engaging said yieldable lip and being tapered towards its edges on the face towards said lipso as to avoid causing an abrupt bend in the lip and consequent partial unsealing of the slot, and said lip being such as to follow closely the contour of the adjacent face of said finger-piece. I

32. The combination with a typewriting machine having a main frame and a carriage, and also having on the front of said main frame certain appurtenances for cooperation with said carriage, of a soundconfining casing for said machine, provided with a top-cover or lid mounted to open by swinging upwardly and backwardly and when opened exposing to convenient manipulation the entire top and front of the typewriter-carriage with said carriage appurtenances on the main typewriter-frame;

said carriage having mounted thereon a plurality of carriagecontrolling handles, whereof one is connected to effect linespacing, and said handles constructed to extend without the casing; said cover slotted to permit such projection of said handles, and locally yieldable sealing means to close the handle slot.

33. The combination with a typewriting machine, of a sound-confining casing there-' for comprising a cover pivoted in rear and having a glass at the front, said casing comprising a chamber to receive the work-sheet as it emerges upwardly from the platen of the typewriter, a slot being provided he tween said glass and said chamber,. and a finger-piece on the carriage passing freely through said slot when opening and closing the cover.

JOHN WALDHEIM. Witnesses EDITH B. LIBBEY, CATHERINE A, NEWELL.

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