US1616860A - Typewriting machine - Google Patents

Description

. 1,616, A. G; F. KUROWS'KI TYPEWRITING MACHINE Feb. 8, .9277].

Filed May 15. 1925 Sheets-Sheet 1 PLAN VIE/Z I 1,616,860 A. G. F. KUROWSKI TYPEWRITING MACHINE,

Feb. 8,1927.

' Filed May 15. 1925 2 Sheets-Sheet 2 Afforwe Patented Feb. 8, 1927.

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ALFRED G. F. KUR-OWSKI, OF BROOKLYN, NEW YORK, ASSIGNOR TO. UHDERWOOD- TYPE WRITER COMPANY, OF NEW YORK, N. Y}, A CORPORATION OF DELAWARE.

TYPEW'RITING MACHINE.

Application filed May 15,

This invention relates to a typewriting machine combined with a sound-deadening casing. One of its features relates to means whereby the platen may be rotated fromthe outside of the casing. The, Underwood standard typewriter, in connection with which this invention is illustrated, comprises key-controlled mechanism for shifting the platen to'either upper or lower case type positions. There 1s provided an exterior linger-wheel mounted on a bracket, the latter being movable by the action of the shift key to maintain operative relationship'between the finger-wheel and't-he platen-axle. The finger-wheel is fast to a shaft that telescopes into and is spline-d to a tube which serves as the platen-axle. The carriage may travel while the finger-wheel is stationary outside of the casing.

The cover of the casing is mounted on rear hinges. Since the finger-wheel is placed above the body-part of the casing and extends through the side Wall ofthe hinged cover, it is necessary to provide a slot .in the 35 side of the cover to clear the shaft of the finger-wheel. Said slot may be sealed with felt. V

Another feature relates to means for controlling the trailing'edge of the work-sheet, 39 especially whenit is a stiff cardor heavy paper. It is an aim to prevent the edge of the sheet from dragging against the sides or" the casing.- Siich drag is apt to have a retarding action onthe carriage. 'A plate at the introductory side of the platen is fast to the regular rear table of the machine. Said plate extends downwardly and rear wardly forming a pocket in which the trail ing edge of the cardis guided, the card or sheet forming a loop previous to passing around the platen.

Other features and advantages will hereinafter'appear. r

In the accompanying drawings,

Figure 1 is a side view in elevation of a sound dcadening casing adapted to an Underwood standard typewriting machine,

' showing the machine enclosed therein.

Figure '2 is a plan view of the carriage'of an Underwood standard typewriting ma-i chine, showing a work-sheet-supporting plate attached thereto.

Figure 3 is a cross-sectional view in ele-' vation of the casing and the machine, showing the means for supporting a finger-wheel 7 the machine.

1925. Serial No. 30,4?2. 7

said means being atoutside of the casing,

platen-shifting mechanism of 'tached to the Figure dis a cross-sectional View through the center of the platen.

Figure is a crosssectional view through on a platen-frame 14L borne by a carriage 15 arranged for travel upon rails16 and 17 fixed to the frame 18' of the machine. v

In the Underwood machine, there is pro- I vided mechanism to shift the platen for either upper or lower case types 19; Said mechanism comprises a key 20 rocking a lever 21011 a shaft 22 against thetension of a spring 23. The lever 21 is provided with an upwardly-extending arm 24 engaging with plates 25 mounted on a cross-shaft 26 fast thereto. Upon said plates there is mounted a cross-bar 27 operatively con nected't-o the platen-frame by means' of a roller 28 rotatably mounted .on said frame; The casing, in connection with which this invention is illustrated,comprises a bodypart 29 and a cover 30 rockably mounted on the casing by means'of hinges 31. The bodypart comprises front; side and rear walls, respectively, indicated by the numerals 32, 33 and 34, the walls forming an integral part of a supporting base-plate 35 upon which the feet 36 of the machine rest; The covercoinprises side walls 3'? formingan integral part of anarcuate top 88,;which terminate'satthe rear thereof with a straight verticalwall' 3 9;

Both the body-part and the cover are; pro- .Vided with layers of sound-deadening mate-' rial, indicated generally by thev numeral 40 for the purpose of further deadeningthe sounds arising from the operation of the machine.

In order that theplaten may be rotated from the outside of the casing without ne-:

cessitating the displacement of, the cover, there is] provided-a finger-wheel l1 adjacent the side wall of the'casing. Said 'finger wheel is operatively connected to the platen by means ofa shaft 42 fast to the fingerwheel 41. Said shaft is collapsibly mounted in a hollow shaft or tube 43 which serves as 1 tard the travel of the carriage.

the platen-axle. The platen-axle or tube 43 is journaled in platen side frames 44 and is provided at the ends thereof with fingerwheels 45, one of which is provided with a set-screw 46 and the other of which is secured to the tube by means of a shaft 47 driven therein. The-platen is mounted on the axle in the regular manner by means of end pieces 48 secured to the axle by means of screws 49, one of which is made longer to screwthrough the tube and to press upon the shaft 47 The shaft 42 is provided with a splined groove 50 engaging with the end of a screw 51 secured to one of the finger-Wheels 45. The purpose of this groove and screw is to rotatably connect the platen to the fingerwheel 41 outside of the casing, while at the same time rendering the carriage operable for letter-space travel. For the purpose of preventing lateral displacement of the shaft 42 when the carriage is operated, there is provided a collar 52 secured to the shaft by means of a screw 53.

In order that, when the platen is shifted to upper-case position, the position of the finger-wheel 41 will be maintained substantially in line with the axis of the platen, to thus eliminate any binding of the shaft 42 against the wall of the tube 43, there is provided mechanism operatively connected to the carriage-shifting key 20 in a manner to effect the raising of the finger-wheel simul taneously with the shifting of the platen. Said mechanism comprises a rigid bracket 54 fast to one of the plates 25 of the platen shifting mechanism by means of screws 55. The bracket 54 extends outwardly from the machine frame and terminates with a bentup tab 56 having a stud 57 fast thereto upon which a roller 58 is rotatab-ly mounted. The roller 58 engages with a cam face 59 of a piece 60 pivotally mounted on a stud 61 fast to a bracket 62 forming a. part of the body-partto which it is secured by means of screws 63, The bracket 62 is provided with a slot 64 to permitthe up-and-down travel of the shaft 42 when urged by the action of the roller 58 actuating upon the cam face 59. It will be noted that the cam face 59, slot 64 and piece 60 may be designed so that the travel of the finger-wheel will correspond to the travel of the platen. It will also be noted that the bracket 62 is secured to the because the bottom edge of a card tends to both damage the lining of the casing and revention, there is provided a plate 66 at the rear of the platen, which plate extends substantially the full width of the platen and is fastened to the rear table 67 by means of screws 68. Said plate 66 extends upwardly conforming to the outline of the table 67, and extends downwardly and rearwardly at 69 forming the inner wall ofa pocket 70 for receiving the trailing edge 71 of a worln sheet 72. At its rearmost end the plate is againbent upwardly at 73 forming a rear wall 74 for said pocket 70, which wall terminates with an outwardly-extending bend 75 to facilitate the insertion of the bottom edge of the work-sheet or card into the pocket, as shown in Figure 1, iuwhich the card forms a loop 76 at the top thereof.

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, f claim:

1. The combination with a typewriting machine including an upwardly-shiftable platen and a hollow platen-axle, of a sounddeadening casing including a lower bodypart and a slotted cover hinged the1'eto,and means for rotating the platen from outside the casing, said meansincluding a splined shaft telescoping into said platen-axle and arranged to extend therefrom through an uprightly-disposed slot in the end wall of said cover.

2. The combination with a typewriting machine including a revoluble platen which is laterally movable, of a sound-deadening casing including a lower body-part and a cover hinged thereto at the back, and means for rotating the platen from outside the casing, said means including a hollowplatenshaft for said platen, a splined shaft arranged for telescoping into said hollow platen-shaft and for extending therefrom through a slot in an end wall of said cover,

and a finger-wheel on the outer end of said shaft, the portion of said slot belowsaid splined shaft being positioned to extend upwardly from the lower edge of said cover on a circular are centered on a line through the point where said cover is hinged to said body-part.

3. The combination with a typewriting machine including a revoluble and laterally movable platen andmechanism for shifting said platen vertically, of a sound-deadeningcasing including a lower body-part and a cover hinged thereto at the back, and means for rotating the platen from outside the easing, said means including a hollow shaft for In this insaid platen, a splined shaft arranged to telethe right end wall of said cover; a. fingerwheel on the outer end of saidsplined shaft,

"shifted to upper-case position.

a bracket mounted on'said platen-shifting mechanism and arranged'for supporting said splined shaft adjacent the inside surface of the right end wall of said. cover, and a groovedplate mounted on said lower bodypart adjacent said slot,said splined shaft being arranged to pass through thegroove insaid plate and be guided thereby in line with said platen-shaft upon, actuation of said platen-shifting mechanisnii. 7

l. The combination with ya typewriting machine including a revoluble shiftable platen operatively mounted on a slidable carriage, of a sound-deadening casing efii'ective to deaden the noise arising from the operation of the machine, means for rotating the platen from the outside of the casing, said means including a finger-wheel operatively mounted on a collapsible shaft extending from the platen-axle, and means for supporting the platen-shaft substantially in line with the platen-axis when the platen is shifted to upper-case position, said last-mentioned means comprising a bracket operatively connected to the platen-shift mechanism of the machine, said bracket being ef-. fective to raise the end of the shaft to the position ofthe platen after being shifted;

5. In a typewriting machine .having a In a typewriting machine having a carriage arranged for letter-space travel, a platen revolubly mounted on said carriage,

.and'meansfor shifting the platen to upper or lower case type position, the combination with a sound-deadening casing comprising a body-part and a cover therefor, of a collapsible shaft telescoping into a hollow-platenaxle, a finger-wheel fast to said shaft projecting through the wall of said casing, and said wheel being effective to rotate the platen, and means controlled by the platen-shifting means for holding the shaft in substantial alignment with the platen when the same is shifted to upper-case position, said holding means. including a bracket fast to a movable member of the platen-shifting means, said bracket being provided with a a roller revolubly mounted thereon, and said roller cooperating witha cam faceunder an armrockably mounted on a supporting bracket forming body-part;

7. .In combination, a typewriting machine having a 'revo-luble platen, a'sound-deadening casing having a'lower bodypart and a displaceable cover therefor pivotally fastenedthereon, an instrumentality extending from said platen through said cover for ro- "integral part of the tating said platen, and means for securing said platen-rotating instrumentality against displacement upon swinging said cover upwardly, o a

8; In a typewriting machine, the combination with. a laterally-movable platen, a

hollowsplatenshaft, and a mechanism for raising said platen to upper-case position, of means for rotating said platen at a distance from one end of the same, said means including a splined shaft arranged to telescope into said hollowplaten-shaft, a lingerwheel at the outer end ofsaid splinedshaft, and a brace mounted on said platen-raising mechanism for supporting said splin'ed shaft adjacent said finger-wheel.

- 1 9. Asound-deadening casing for a typewritingniachnie including a lowe1',bodypart, a cover for said body-part, and hinges pivotally connecting said cover to said bodycart at the back, said cover having a slot through an end wall extending up from the lower edge thereof to a point substantially opposite the axis of said typewriting machine, a lower portion of said slot being curved on a circulararc whosecenter lies on a line through the axis of said hinges] 10. In c'onbination, a typewriting machine T having a revoluble platen, a hollow axle therefor, a carriage and a platen-shifting mechanism, a. spline-control screw in said axle extending into the. hollow portion there of a sound-deadening casing having a bodypart and a cover therefor, said cover being displaceable, means forv rotating \theplatcn from the outsidefof the casing without necessitating the displacement ofgthe cover, said means including a splined shaftextending into said platen-axle and outwardly therefrom to the exterior of the casingandhaving a finger-wheel fast thereto and at the outer end thereof, the spline in said shaft en gaging with a screw in said axle through which the platen is rotated by the. revolving action of the finger-wheel, means mounted on said mechanism for supporting the end of the shaft near the finger-wheel to raise the shaft in substantial alignment with the platen-axis when the platen is shifted to upper-case position, and means for preventing the lateral displacement of the fingerwheel when letter-feeding theplaten.

11. A typewriting machine having a, revo luble platen, a carriage and a platen-shifting mechanism, in combination with a soundthe finger-Wheel when letter-feeding deadening casing having a body-part and a cover therefor, said cover being displaceable, means for rotating the platen from the outside of the casing Without necessitating the displacement of the cover, said means includin a collapsible splined shaft extending to the exterior of the casing and having a finger-wheel fast thereto and at the end thereof, the spline in said shaft engaging with a screw fast, to the platen through which the platen is rotated by the revolving action of the finger-wheel, means for sup porting the end of the shaft near the fingerwheel to hold the shaft in substantial alignment with the platen-axis when the platen is shifted to upper-case position, and means for preventing the lateral displacement of the platen, said lasttwo mentioned means in cluding a rigid bracket fast to a movable member of the platen-shifting mechanism, a fixed bracket fast to the body-part of the casing and forming an integral part thereof, a shaft-supporting piece rockably mounted on the fixed bracket, said piece being oper ated by the rigid bracket, and a collar fast to the shaft, the collar being controlled against lateral movement between the shaftsupporting piece and the fixed bracket.

12. The combination with a typewriting machine having a platen, a laterally-movable carriage, and a paper-table at the rear of the platen, of a sound-deadening casing, and a stiff pocket fastened to said papertable and extending rearwardly therefrom and terminating clear of the rear Wall of said casing, said pocket having a flared throat adjacent said paper-table for receiving the end of a work-piece and for holding the same to prevent it from dragging against the inner surface of said casing upon lateral movement of said carriage.

13. In a typewriting machine having a revoluble platen and a" carriage therefor, the carriage being arranged for letter-space travel, the combination with a sound-deadening casing having a body-part and a cover therefor, of-means for controlling the position of the trailing or bottom edge of a stiff work-sheet to prevent its engagement with the inner sides of the walls of said casing, said means including a plate at the rear of the carriage, said plate having a pocket for receiving the trailing edge of the worksheet.

14. A sound-deadening casing for a type- Writing machine including a lower bodypart, a cover for said body-part, and hinges for pivotally connecting said cover to said body-part, said cover having a slot through an end wall extending upwardly from the lower edge thereof to a point a short distance above the intersection of said end wall and the extension of the axis of said platen when the latter is in upper-case position, a short upper portion of said slot beiingsubstantially vertical. and the remainder of said slot being curved on a circular arcwhose center licson a line. extending through the axis of said hinges, and a plate fastened on an end wall of said body-part and extending upwardly therefrom to be disposed closely against the slot in the end wall of the cover, so as to seal the curved portion of said slot against the emissionof sound.

15.111 a typewriting machine having a platen revolubly mounted "on a shiftable platen-frame borne by a carriage arranged for letter-space travel, the combination with a sound-deadening casing having a bodypart and a cover therefor, of means borne by the platen-frame for controlling the position of thetrailing edge of a worksheet around the platen to hold the edge of the work-sheet away from the Walls of said casing, so as to permit the free movement of the carriage, said means including a plate fast to the platen-frame and extending su stantially the full width of the platen, the plate being bent at the rear of the platen and forming a pocket for housing thetrailing edge of the work-sheet. 7

ALFRED itunowsnr i

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