US921214A - Type-writing machine. - Google Patents

Description

J. FELBBL. TYPE WRITING MACHINE. rum-r101! nun MAE. 1, 1909.

2 SHEETS-BHEIJT 1.4

If y B j f m y 2 I N V 7 n l I l J f r a \A/mvzssza INVEN DR;

J. FELBEL.

TYPE WRITING MACHINE. APPLICATION FILED MAR11,1909.

921,214. Patnted May 11, 1909.

2 SHEETS-$113111 2.

FIG. 7.

Wrmcsaaa I INVENTUR' UNIT TED STATES PATENT OFFICE.

JACOB FELBEL, OF NEW YORK, N. Y., .isslonon TO UNION TYPEWRITER COMPANY, or

JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented M... 1 1, 1909.

Application filed March 1, 1909. Serial No. 180,548.

To all whom it may concern:

Be it known that I, J A0013 FELBEL, citizen of the United States, and resident of the borough of Manhattan, city of New York, in the county of New York and State of New York have invented certain new and useful lmprovcinonts in Type-'Writing Machines. of which the following is a specification.

My invention relates to ty mwriting machines and more particularly to fractional lino spacingdeviccs involving platen clutches, and the invention has for its principal object, to provide improved means for operating platen clutches.

My invention consists in certain features of construction and combinations and arrangements of parts, all of which will be fully set forth herein and particularly pointed out in the claims.

In the accom anying drawings, Figure 1 is a longitudina central section through the platen of a typewriting machine having my invention embodied therein, part of the carriaic being also shown and parts being Bro en away, and the clutch shown in normal or clutching position. Fig. 2 is a similar view of the end of the platen on which the lincspace wheel is mounted and some of the connected parts, but showing the clufdh in released position. Fig. 3 is an isometric view of one of the platen heads. Fig. 4 is a diagrammatic face view of the line space wheel and thedogs andwedges of the clutch. Figs. 5 and 6 are bottom views showing part of the clutch operating mechanism detached, Fig. 5' showing *the parts in normal position and Fig. 6 showing the parts in released positiou-v Fig. his a side view of a guide piece forming rt of the mechanism. Fi e. 8 is an lSOmGtIIG view, on an enlarged scale showinga collnn and pin.

My invention is applicable or adaptable to various styles of typewritinr machines and to various sorts of platen c niches, but T have here shown it applied to a Monarch typewriter and preferably to a platen clutch like that shownin the British patent to Fell No. 28.219 of 1906. The latch clutch shown in said British patent, 1i e most other platen clutches, is operated to release the platen from the line space wheel hy'moving a part longitudinally of the platen axle.

It is one of the purposes of the present invention to operate these clutches by a lever or other device that is mounted in the platen frame and situated in a more convenient position than these longitudinally movable parts and that moves in another direction and will be automatically retained in either of the positions to which it is set, thus leav ing the hands of the operator free to turn the platen or to adjust the paper or to do whatever else may be necessary. while the clutch is disconnected.

Operating devices that have to he moved by hand li'ingitudinally of the platenl. have usually involved a divided platen axle or some modification of the bearings or sup: ports of the platen, which tend to comp cate the mechanism and to weaken. important parts of 'llCl mechanism. In some forms of these platen clutches the latch knob or finger wheel itself is movable on itudinally; in others the platen shaft means of the finger wheel. I f the knob that has to be pushed is situated at the left-hand end of the platen. then, when said knob is o crated, thcreis a liability to move the p aten backward in letter space direction.

One of the purposes of my invention is to operate the platen clutch by means not open to any of these several'objections.

The carriage of the Monarch typewriter comprises two end pieces or brackets 1 and 2 which support the platen 3. Said platen is provided with a shaft 4 which is journaled in bearing sleeves 5 which pass through suitable openings in the brac tot-s I and 2 where they are rigidly secured by set screws 6. The platen is provided with a ri h:- hand platen head 7 which is rigidly fixed m the shaft 4 by means of a set screw 8. In this machine the line space wheel'is at the lefthand end of the platen andthe lefthand platen head 9 has the line space wheel 10 mounted thereon. The platen heads are secured to the wooden core of the. platen by screws 11 which pass through holes 12 in the platen heads. its ends with the usual finqer wheels 13. The left-hand face of the pliiten head 9 is formed with three projections 14 constituting segments of an annular flange the periphery of which is surrounded by the platen wheel 10 in such fashion that. when the clutch .is released the line space wheel The shaft. 4 is provided at and platen head are free to turn the one with relation to the other. The line space wheel has an internal flange in which internal V-shaped teeth 15 are formed and it is the points of these teeth that ride on the peripheries of the flange segments 14. Three rectangular radial openings 16 between the segments 14. serve as guide ways for dogs 17 which are mounted in said openings 10 with freedom to slide radially in and out. Each of these do s has at its outer end a chisel or V-shapef'tooth 18 adapted to enter the notches between the teeth 15 of the line space wheel. These dogs are normally pressed into engagement with the teeth 15 by means of wed es 20 which are seated in holes 21 formed longitudinally of the platen in an inward extension 22 of the platen head 9. The wedges 20 are pressed toward the left by coiled springs 2-3 compressed between the bottoms of the holes 21 and the ends of the wedges 20. Each of said wedges has an inclined or wedge face 24 which contacts with a similarly inclined face on the inner end of the correspmiding dog 17. The spaciu of the teeth 18 of the dogs and of the tech 15 of the line space wheel, is such that in no relative positions of the platen and line space wheel can more than one of tht teeth l8 be bottomed in one of the notches between the teeth 15. In Fig.

i the parts are shown in such a positionthat one of said teeth 18 is prcssed-to the bottom of one of the notches. When the platen and line space wheel happen to occupy this relative position it will. he the other teeth 19 is pressed against one of the teeth 15 in such a way as to prevent relative motion of the line space wheel and platen in one direction and the third tooth 18 engages one of the teeth 15 in such a Way as to prevent relative motion of these parts in the other direction. The parts are so designed that in any relative position of the line space wheel and platen at least one of the teeth 18 will prevent motion of the platen relatively to the line space wheel in one direction and at least one of said teeth will prevent. relative motion of the parts in the other direction, so that said line space- Wheel and platen are locked together to turn in unison. The angle of the inclined part 24 of each of the wedges is such that pressure inward on the corresponding do 17 will not cam the wedge toward the rigfit so that the dog is positively locked in its engaged position.

A retaining plate 25 is mounted on the platen head 9, being secured to the faces of the flanged segment 14 by screws 26 threaded into screw-holes 27 in said flanges. This retaining late closes the openings 16 so as to retain tie dog '17 in place in said openings and'it also lies over the internally toothed flange of the line space wheel, thus noted that one of retaining said line 8 ace wheel in position. This retaining plate as a smooth periphery which forms part of the journal bearing for the line space wheel when said line space wheel is free to turn. The line space wheel has crown ratchet teeth 28 which are on gaged by the line saace pawl (not shown) and also by the usua detcnt roller 29.

In order to release the platen clutch, a disk or collar 30 is sidably mounted on the shaft 4. to the left of the platen head 9 and this disk is ada ted to engage leftward pro longations 31 o the wedges 20 so that when the disk is moved toward the right it pushes all of said wedges toward the right and re leases the dogs 17'from said wedges, leaving said dogs free to move inward toward the shaft 4 to a sufficient extent to release them from the teeth 15. The disk 30 is formed with an internal coned surface 32 which, when said disk is moved toward the right, is ad. ted to engage inclined surfaces 33 formed on the toes of the dogs 17, the construction being such that the coned surface 32 cams the dogs 17 positively inward rut of engagement with the teeth 15,

The disk or collar 30 is moved toward the right to release the laten by means of a handle or lever 34 which is rigidly mounted on or secured to a collar 35 which is journaled on the shaft 4 just inside of the sleeve The collar 35 is bored out at its right-- hand end so as to receive the disk 30 and the right-hand end of the collar 35 abuts the end of a hub portion 36 of the retaining plate 25. The collar is thus held against endwise motion, being mounted between the retaining plate 25 and the sleeve A collar 37 is loosely mounted on the shaft 4: within the enlarged part of the collar just at the left of the collar 30. The collar 37 has a pin 38 projecting therefrom through a cam slot. 40 in the sleeve 35. This cam slot has its middle part cut at. an inclination as shown in Figs. 5 and 6 and at its ends it is formed with dwells 41 and 42, The inner end of the slot is open when the collar 35 .is detached from the machine but when the parts are assembled it is closed by the hub 36 as shown in Fig. The pin 38 is pro longed beyond the collar 35 as shown in Fig. 1 and passes through an elongated slot 43 in an arm 44 which is rigidly secured to the laten frame in any suitable manner. As iere shown this arm has a hole 45 (Fig. 7) through which the screw 6 passes and the arm is held in place by a nut 40 which tightens the an; up against the hracltet l. The slot 43 (Altlltlfi parallel with'the shaft 4 so that: the pin 3a is free to move longitudinal y of the piatcn but is not free to turn about the platen axi The handle 3 i utu'uallly occupies its rear most position shown in Fig. i and the pin 38 then o cupies the dwell l! as shown in Fig. 5. If the handle 34 be pulled toward the front of the machine the sleeve 35 will rotate from the osition shown in Fig. 5 to that shown in Fig. 6 and as the pin 38 can not rotate with the sleeve on account of the arm =14, said pin is cammcd toward the right until it occupics the dwell 42 at the other end of the slot 40. The sleeve 37 is thus forced toward the right carrying the sleeve 30 with it and releasing the clutch, the parts then occupying the position shown in Fig. 2. Asthc pin 38 is then in a dwell in the cam slot the handle may be released and it will remain in that position until it is pushed back to its normal position, or at least until it is pushed far euou 'h to release the pin 38 from the dwell 42. while the handle is in this clutch-releasing position the platen may be turned to any desired extent indcpend= ently of the line space wheel. When the platen has been turned to the desired position and the handle 34: has been pushed back to normal position, then the clutch automatically locks the platen and line space wheel together in the precise relative position to which they were adjusted and the line spacing will proceed from that position.

I am aware that many changes may be made in the details of construction and arrangement without departing from my invention.

While I have here shown the cam 40 as moving concentrically withthe shaft 4, yet

this-cam. of course, can move in other Ways.

It will be noted that the clutch releasing element 30 of the platen clutch moves lonitndinally of the platen and that the handle by which it is operated moves in a plane the is transverse to the platen axis.

What I claim as new and desire to secure by Letters Patent, is

1. In a typcwriting machine, the combination of a rotary platen, a line space wheel, a releasable clutch normally locking said line space wheel and platen to turn together, a handle movable in a plane transverse to the platen axis for releasing said clutch, and means connecting said handle with said clutch.

2. In a typewriting machine, the combination of a rotary platen. a line space wheel for said platen, a rclean ble clutch for normally causing said platen and line space wheel to turn together, a handle arranged to be operated in a plane transverse to the platen axis, and means operated by said handle for moving a part 0 said clutch longitudinally of the plate] in order to release said clutch.

3. In a typewriting machine, the combinatinn. of a rotary platen, a line space wheel for said platen, a releasable clutch for nor mally causing said platen and line space wheel to turn together, a handle arranged to be operated in a plane transverse to the platen axis, and a cam oierated by said handle for moving a part oil said clutch longitudinally of the platen in order to release said clutch.

4. In a typewriting machine, the combination of a rotary platen, a line space wheel for said platen, a releasable clutch for nor mally causing said Jlaten and line space wheel to rotate together, a lever pivoted in the platen frame to move in a plane trans verse of the platen axis, and means operated by said lever for opera ing said clutch.

5. In a typewriting machine, the combination of a rotary platen, a line space wheel, a releasable clutch normally locking said line space wheel and the platen to turn together, a handle movable in a lane transverse to the platen axis for releasing said clutch, means connecting said handle with said clutch and means for causing said handle to remain in either of the positions to which it may be moved.

6. In a. typewriting machine, the combination of a rotary platen, a line space wheel for said platen, a releasable clutch for normally causing said platen and line space wheel to turn together, a handle arranged to be operated in a plane transverse to the platen axis, a cam o erated by said handle for'movin a art. 0? said clutch longitudinally of the p aten in order to release said 'clutch, said cam having a dwell to allow said handle to remain in clutch-releasing position.

Signed at the borough of Manhattan, cit of New York, in the. county of New Yorr and State of New York this 27th day of February A. D. 1909.

JACOB FELBEL.

YVitnesses:

J. B. Dnnvns CHARLES E. MITH.

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