US1617695A

US1617695A - Typewriting machine

Info

Publication number: US1617695A
Application number: US755905A
Authority: US
Inventors: Waldheim John
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1924-12-15
Filing date: 1924-12-15
Publication date: 1927-02-15
Anticipated expiration: 1944-02-15

Description

Feb. 15, 1927. 1,617,695

J. WALDHEIM TYPWRITING MACHINE Filed Deo. 15. 192.4

Patented Feb. 15, 1927.

UNITED STATES PATENT OFFICE.

JOHN WALDI-IEIM, OF ELIZABETH, NEW JERSEY, ASSIGNOR T0 UNDERWOOD TYPE- WRITER COMPANY, 0F NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITING MACHNE.

Application led December 15, 1924. Serial No. 755,905.

This invention relates to sound-proof cabinets for typewriting machines, and more particularly to means to partially open the normally closed cabinet to give access to finger-pieces on the carriage.

Sound-proof cabinets have been provided for typewriting` machines in which the iinger-pieces on the carriage of the typewriting machine extend through a slot 1n the cabinet to the exterior thereof, so that the carriage may be operated from the outside. In cabin-ets of this kind it is not only necessary to replace the usual inger-pieces on the carriage by especially long ones, but it is also necessary to provide the cabinets with suitable slot-sealing devices to prevent leakage of sound from the cabinets and between which said finger-pieces extend.

An object of the present invention is to so construct a sound-proof cabinet that it may be produced at a minimum ot cost. To this end, the necessity of special fingerpieces on the typewriter carriage has been avoided. The usual finger-pieces are used, and provision is mad-e whereby the cabinet may be partially opened so that the .hand of the operative may pass through lsaid opening to said finger-pieces to manipulate the carriage.

The cabinet ot this invention is composed of a loody-part to tit around the frameof 1 the machine and a cover on said body-part.

Said cover extends over the carriage oi" the machine and is pivoted on the body-part in such a manner that it may be swung in the direction in which the hand is moving` when reaching for the desired finger-piece on the carriage.

A finger-piece in the form of a flange is provided at the upper end of the cover with which the hand may lirstengage to open the cabinet, after which the same hand may slip down from said finger-piece through the opening to the desired finger-piece on the carriage. A hand or linger-rest is provided on the body of the cabinet along which the iin-ger may sli-de while the carriage is being returned to the beginning of a writing` line. The lingerpiece on the cover is elongated and extends the full length of the cover, so that it may be engaged at any point lengthk wise thereof according to the posi-tion of the finger-pieces on the carriage. To facilitate opening the cabinet, there is connected to the cover a spring which normally tends to open sai-d cover but is overcome by the weight oi the cover, the center of gravity of which is to one side oi its pivot. Said spring is also ett'ective to hold the cover open when it is swung .all the way back.

Instead of opening the cover with the same hand which is to engage the ngerpiece, as above explained, it may be desirable at times to open the cov-er with one hand while the other reaches through the opening to the finger-piece on the carriage, To this end there is provided a key which may be support-ed on the body of the cabinet, said key when actuated being effective to push the cover back to open the cabin-et. It will be understood that the cov-er may be sprung back a considerable extent. for the purpose of giving access to the platen, as, for instance, when inserting` a new work-sheet into the machine. rPhe key for swinging said cover, however, is effective to swing said cover only a short distance suiiici-ently to permit passage ot the hand into the cabinet. To permit the cover to be swung through a predetermined distance by the key, there is provided a stop to limit the motion of said key.

The cabinet is composed ot' three parts, namely, a pack or shoe t0 fit around the vframe of the machine, a cover pivotally sii-pported on said shoe, and extending over the carriage, and a front plate against which the coverrests. Both the shoe and the front plate are secured to the typewriter frame. The cover is pivoted on the shoe and is inclined upwardly and forwardly and abuts against inclined flanges at the sides of the front plate.

Other features and advantages will hereinafter appear.

ln the accompanying drawings,

Figure l is a side view of the casing` in elevation, showing the cover partly open for operating the carriageecontrol levers.

Figure 2 is a closssectional View in elevation through the line 2 2 of Figure 4, showing the cover closed and the typewriting machine enclosed therein.

Figur-e 3 is a fractional view in crosssection through the line 3-3 of Figur-e 4, and shows one of the devices for partially CII opening the cover to operate the carriagecontrol levers.

Figure 4e is a front view of the casing in eleva-tion, and shows the diterent sect-ions composing the same.

The Underwood standard typewriting machine comprises a main frame 10, and has a forward extension 11 carrying banks oi keys 12, operating type-bars 13 to cause types 1d to strike against a platen 15 journaled in platen-frames which form part of a carriage 16. Said carriage is mounted for letter-feed movement upon rails which form an integral part otl the main frame, and is provided with controlling` levers 17 for operating the carriage and the platen.

It is tor the deadening of the sounds arising ft'rom the operation ot a typewriting machine ot this general character that this sound-deadening casing is provided.

Referring more particularly to Figure 2, it will be seen that the casing is normally closed and that a cover 18 is held in a closed position by its own weight and against a .spring 19, which tends to open the same but is not strong enough to overcome the weight of the cover 18. The function of said spring is to counterbalance the weight ot the cover, so that the same may be rocked on 'tulcrtnnscrews 20 and swung backwardly to partially open the same, as shown in full lines in F igure 1, with a minimum eiiort on the part oit the operative.

In order to operate the carriage-control levers normally enclosed in the casing, it is necessary to partially open the cover 18 so that the hand may reach through the opening to the levers, as indicated in Figure l, in which a linger 21 is shown in the slot torn'ied between the cover 18 and a front closure 22. The cover may be either pushed backwardly by the end of the lingers striking a rib 23 along the frontedge, or it may be operated by means ot one ot two buttons 24. at both extreme ends of the iront closure 22. Said button 24 vis 'fast to a plunger pin 25 around which a spring 26 is wound to restore the same to normal position, as shown in Figure 3. The spring 26, as shown in the drawings, is a compression spring and actuates between the button 24 and a narrowed portion 2T in a hole which serves as a. bearing for the plunger 25. Said plunger is provided with a rounded end 2S tor engaging the edge 29 ot the cover 18.

The casing comprises three main parts or sections, a lower member 30 upon which there is rockably mounted the cover 18, and the front closure 22.

The lower boXdike member 30 is designed to snugly lit over the typewriter framework, to which it is fastened by means of the regular typewriter feet 31, which serve as means tor holding the lower member and the frame ot the typewriter together. The member 30 is provided with a lining 5d of some sounddeadening material, and the feet 31 are screwed into the typewriter trame through holes in the member 30 in positions corresponding to the tapped holes in the iframe.

The front closure is Jlistened to the typewriter trame by nieans ot screws S32 in place of the usual tront plate tound in the Underwood machine. Said front closure extends the 'full width ot the cover 18, and at the ends there rre provided rearwardly-extending portions 32-3 which snugly lit the outline ot the lower .member SEO at The bor-- ders oi the Afront closinfe are provided with asott strip der` e'ned to etl'ectively close the opening 'l'orm d itfetwcen said nt cio-- sure and the cover 1S. '.lhcre is also proviced a lfelt covering' 36 fast to the inner side oJ the iront cloznire. At the ends oi the ,Front closure there are provided boss s 3i" ior receiving the plung rs 25, the ohpat ot' which has been hereinbeime described.

in order that a worloshee' may be insei-ted around the platen 15, the cover dcsigned to be swung itarther bach to a position shown in dot-and-dash lines in Figure 1.. For this purpose there is provided a stop device which comprises a pin 3S and a bent portion l() which Jforms an integral part oi the cover 18. lt will be noted that the spring 19 assists in keeping the cover in this po tion against the stop pin 89. Another ifeature ot the cover is a pocket ll1 at the rear .i'or receiving the overhanging portion ot the work-sheet, said pocket boing 'formed hf.' the rear wall 4-2 ot the lower meniher SEU. the rear wall i3 ol the cover 1H, and a lower connecting wall which toi-nis an inten-ral part ot said cover and extends iiorw; y to moet the wall at ln order to lower the .tuicrum poi .t upon which the cover swung, there are provided two down wardlvextending ears lit, which serve as bearing-a for the 'lulcruni fufrows 20. 'the wall El it; iorwardly extended to torni pockets :it the ends in which the carriage enters when le.- ter-spaced to a position beyond the vtraine o' the machine, and is providml with an npwardly and forwardly extending portion el? in line with an extension l-S. which i'orms z n integral part of the front closure 22.

The printing point rendered visible h v the provision ot a window in the cover 1S. having a glass el!) fastened to the cover by means oli a plate 5() and screws 51. will he noted that at the front the glass is held in a groove 52, while at the sides (not shown) and at the rear provision is only made tor holding the glass against outward pressure, so that the glass may be inserted in the groove 52 and .Forced into place and held there by means ot the plate 50.

In order to further deaden the noise arising from the operation of the machine, the cover is provided with a lining 53 of sonic llo 'sound-deadening material, suoli as felt. Said lining is also extended to cover the pockets for the carriage at the ends of the cover.

It will be seen that the casing is of such construction that when the typewriter is operatively installed therein there is no opening through which the sound arising from the operation of the machine may escape. This invention therefore provides a sounddeadening casing which, although not so etlicient in regard to operation of the carriage-levers as those casings provided with slot-sealing cushions through which the carriage-controllinglevers protrude, is more efiicient in its noise-eliminating properties, and has the added advantage that the typewriter may be placed in the casing with little or no alteration thereof.

It will also be seen that, due to the general design ot the different sections composing this casing, the same adapts itself to be interchangeably manufactured within liberal limits, and therefore can be produced at a comparatively low cost.

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:

l. The combination with a typewriting machine having a carriage and finger-pieces on said carriage, ot' a closed sound-proof cabinet to enclose the machine, including said finger-pieces, said cabinet comprising a closing element pivoted to swing mainly rearwardly in the vicinity of said fingerpieces, and movable rearwardly out of the way by movement of the hand of the operative rearwardly toward any one of the Hilger-pieces on the carriage, to partially open said cabinet to form a front lia-nd-l opening to give access to the finger-pieces on the carriage.

Q. The combination with a typewriting machine having` a carriage and finger-pieces on said carriage, ot a closed sound-proof cabinet to enclosefthe machine, including said finger-pieces said cabinet comprising a closing element pivoted to swing mainly rearwardly in theI vicinity 4of said fingerpieces, and movable rearwardly out of' the way by movement of. the hand of the operative rearwardly toward any one of the linger-pieces on the carriage, to partially open said cabinet to form a front handopening to give access -to the finger-pieces on the carriage, and a finger-piece extending along said pivoted element and engageable anywhere throughout the length of the pivoted element, for opening the same.

3. The combination with a typewriting machine having a carriage and finger-pieces on said carriage, of a closed sound-proof cabinet to enclose the machine, including said linger-pieces, said cabinet comprising a closing element pivoted to swing mainly rearwardly in the vicinity ot said fingerpieces, and movable rearwardly out of the way by movement of the hand of the operative rearwardly toward any one of the finger-pieces on the carriage, to partially open said cabinet to form a front handopening to give access to the iing'er-pieces on the carriage, a finger-piece lextending along said pivoted' element and engageable anywhere throughout the length of the pivoted element, for opening .the same, and a finger-rest on said cabinet adjacent the opening. y

4. Thel combination with a. typewriting' machine having a carriage andlnanipulable devices on said carriage, of va closed soundproof cabinet to `enclose the machine and manipulable devices and render the latter inaccessible, said cabinet comprising a bodypart, a cover on said body-part, 'a {ingerpiece connected to said cover to .swing it to partially open said cabinet to ,givev access to the manipulable ydevices on the carriage, and means tor limiting the extent of opening of said 'cabinet yeffected by said finger` piece, to form no more than a hand-opening.

5. The combination with a typewriting machine having a carriage and manipulable devices on said carriage, of a sound-proof cabinet to enclose the machine and said devices, said cabinet comprising a body-part, a cover on said body-part, a finger-piece connected to a plunger to swing said cover to partially open said cabinet to give access only to the manipulable devices on the carriage, and a stop to engage said plunger t-'o determine the extent of opening of 'said cabi net effected by Asaid coveliswingin-g fingerpiece.

6. The. combination with Ia typewriting machine having 'a carriage 'and finger-pieces 'on said carriage, 'ot a yclosed sound-proof lcabinet to enclose the machine vand the finger-pieces, in their entirety', said cabinet comprising a. pack fitted around the 'frame of the machine, a front plate carried by the machine and. a fcover pivoted on said pack, and a finger-piece on -said front plate to swing said cover to partially open said cabinet to form a hand-'opening to give access to the finger-pieces on said carriage.

7. The combination with va typewriti'ng machine, of a soundfproof vcasing for said machine, said lcasing comprising a body-part to fit around the frame of said machine and a cover pivoted on said body-part, and a detachable front plate, said front plate having rearward extensions to form with said cover carriage-chambers extending beyond the sides of said body-part, the bottom of said cover being inclined upwardly and forwardly, said front plate having inclined flanges 'at i-ts sides with which the inclined portion olf the cover engages. v

aio

CII

8. The combination with a typewriting machine having a carriage, of a. sound-deadening cabinet for said machine, said cabinet comprising a pack fitted around and directly upon the frame of the machine, means to clamp said pack to said frame to subdue noise vibrations, a cover pivoted on said pack, said cover substantially longer .than said pack, to form a chamber' in which the carriage may travel, and having ends overhanging said pack, a frontplate secured to the frame of the machine, said front plate serving as a front closing abutment for said cover, and means partly on said front plate and partly on said cover, for closing the bottom of the overhanging ends.

9. The combination with a typewriting machine, of a sound-deadening cabinet for said machine, said cabinet comprising a pack fitted around the frame of the machine, means to secure said pack to said frame, a cover pivoted on said pack, said cover being inclined upwardly and forwardly at the bottom, and a front plate secured to the frame of the machine, said front plate having inclined flanges to serve as a closing abutment for said cover.

l0. The combination with a typewriting machine including a carriage having fingerpieces, of a sound-proof cabinet to completely enclose said machine except the keyboard extension, said cabinet comprising a pack fitted closely around said frame and absorbing vibrations therefrom, a cover pivoted on said pack, a detachable front plate, said cover and front plate co-operating to form a carriage chamber of substantially greater length than the pack and overhanging the same, and means to partially open said cover to form a hand-hole to give access to the nger-pieces on the carriage of the machine at all positions of said carriage.

l1. The combination with a typewriting machine having a carriage and controlling levers therefor, and including a frame and tapped holes for receiving supportil'lg feet, of a casing, comprising three sections, namely, a lower member around the frame and fastened thereto by means of said feet, a hood pivoted on said lower member and a front closure fastened to the frame of the machine, for effectively enclosing the opening formed between the lower member and the hood, the three sections completely enclosing the typewriter except for the keyboard section which protrudes through an opening at the front.

12. The combination with a typewriting machine having a carriage and controllinglevers therefor, andincludinlp,l a frame and tapped holes vfor receiving supporting feet, of a casing, comprising three sections, namely, a lower member around theframe and fastened thereto by means of said feet, a hood pivoted on said lower member and a front closure fastened to the frame of the machine, for effectively enclosing the opening formed between the lower member and the hood, the three sections completely enclosing the typewriter except for the keyboard section which protrudes through an opening at the front, and means whereby the hood may be partially opened by swinging the same to the rear to give access to the controlling levers on the carriage.

13. The combination wit-h a typewriting machine having a carriage and controlling levers therefor, and including a frame and tapped holes for receiving supporting feet, of a. casing, comprising three sections, namely, a lower member around the frame and fastened thereto by means of said feet, a hood pivoted on said lower member and a front closure fastened to the frame of the machine, for effectively enclosing the opening formed between the lower member and the hood, the three sections completely enclosing the typewriter except for the keyboard section which protrudes through an opening at the front, and means whereby the hood may be partially opened by swinging the same to the rear to give access to the controllingl levers on the carriage, said means comprising a plunger operatively mounted in said front closure and held in its effective position by means of a spring, a button for operating said plunger and a rib forming an integral part of said hood and operatively engaging said plunger.

14. The combination with a typewriting machine having a carriage and controlling levers therefor, and including a frame and tapped holes for receiving supporting feet, of a casing, comprising three sections, namely, alower member around the frame and fastened thereto by means of said feet, a hood pivoted on said lower member and a front closure fastened to the fram-e of the machine, for effectively enclosing the opening formed between the lower member and the hood, the three sections completely cnclosing the typewriter except for the keyboard section which protrndes through an opening at the front, means whereby the hood may be partially opened to give access to the controlling levers of the carriage, and means whereby the hood may be fully opened to give access to a work-sheet to manipulate the same.

15. The combination with a typewriting machine having a carriage and controlling levers therefor, and including a frame and tapped holes for receiving supporting feet, of a casing, comprising three sections, namely, a lower member around the frame and fastened thereto by means of said feet, a hood pivoted on said lower member and a front closure fastened to the frame of the machine, for effectively enclosing the opening formed between the lower member and llil the hood, the three sections completely ento give access to a work-sheet to manipulate closing the typewriter except for the leythe same, said last-mentioned means combozud section which protrudes through an prising a stop-device for determining the 10 opening at the front, means whereby the amount that the hood may be opened and 5 hood may bepartially opened to give access a spring to assistJ the swing of the hood to the controlling levers of the carriage, and while being opened. means whereby the hood may be fully opened JOHN VVALDHEIM.