US933021A

US933021A - Line-spacing mechanism.

Info

Publication number: US933021A
Application number: US205593A
Authority: US
Inventors: Edwin B Cram
Original assignee: NEW YORK ADDING TYPEWRITING Co
Current assignee: NEW YORK ADDING TYPEWRITING Co
Priority date: 1904-04-27
Filing date: 1904-04-29
Publication date: 1909-08-31
Anticipated expiration: 1926-08-31

Description

E. B. CRAM.

LINE SPAGING MEGHANISM.

APPLICATION FILED APB.. 29, 1904. y y

Patented Aug. 31, 1909.`

4 SHEETS-SHEET l.

. F LN SQ.. Sw www, v l@ I .E.r. |r l E www. UH Y WMW/ www RW .N 5mm, @i aww o e ww .mw wwwmk ,Y www. WIIIIIII. l

n3 w. g?

C@ S5 LA @Vi/imm@ E. B. CRAM.

LINE SPAGING MECHANISM.'

APPLICATION FILED APR. 29, 1904.

Patented Aug. 31, 1909.

4 SHEETSSHEBT 2.

E. B. CRAM. LINE SPAGING MBCHANISM.

APPLICATION FILED APR. 29, 1904. 933,021 Patented Aug. 31,1909,

39] 4.93 364 I 3. f i 36513.93 38,?" 359 26g V3.90 I

E. B. CRAM. LIN-E SPACINGr MEGHANISM. APPLICATION FILED APR. 29, 1904.

Patented Aug. 31, 1909;

4 SHEETS-SHEET 4.

@H0111 ms EiTED STATES PATENT oEEIcE.

EDWN B. CRAM,

0F BROOKLYN, NEW YORK, ASSIGNOR T0 NEW YORK ADDING TYPEWRTER COMPANY, OF ORANGE, NEW JERSEY, A CORPORATION OF MISSOURI.

LINE-SPACIN G MECHAN ISM.

Specification ot Letters Patent. Patented Aug. 31 1909.

Original application filed April 27, 1904, Serial No. 205,206. Divided. and this application led April 29, 1904.

Serial No. 206,593.

To all whom it may concern:

Be it known that I, EDWIN B. CRAM, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Line-Spacing Mechanism, of which t-he following is a specification.

This invention relates to line-spacing mechanism and coperating devices for typewriters, and has for its object the provision of improvements as willbe hereinafter set forth.

In the accompanying drawings, Figure 1 is a plan view of the carriage of a typewriting machine embodying the invention; Fig. 2 is` a side elevation on an enlarged scale of the line spacing mechanism; Fig. 3 is an end elevation of the entire carriage; Fig. 4 is an end elevation of part of the carriage; Fig. is an end View of the platen showing the line-space ratchet wheel and its cooperating pawl and mechanism; Fig. 6 is a plan view.

on an enlarged scale, of the line spacing mechanism and parts at the left end of the carriage; Fig. 7 is a detail view of the spacv ing lever.

The frame of the machine supports a transversely movable carriage carrying a platen P. adding. mechanism F and a relatively movable sub-carriage carrying the line spacing mechanism. The sub-carriage comprises the end plates '26S and 969 and the base-piece 270 to which the end plates are secured.

Secured to the platen is the usual liliespace ratchet wheel 350. Forming part of the line space mechanism which with its copei'ating devices will' now be described. Fixed to the sub-carriage and plate is a support comprising a base portion l352- that lies between the sub-carriage end plate and the main carriage end. and an arm 353 which projects over the main carriage end. ln the outer end of the arm is pivoted at 356a the line-space lever 356 andthe carrying levers restoring lever 359. .i linger-piece 364 is formed at` the end of the arm 353 for use in moving the carriage transversely of the machine. The lever 356 works in a closed slot 365 in the sub-carriage end plate 'and is guided and limited in ,its movement thereby`r a suitable spring I )normally pressing it.

.upon the top of the clip,

point 377 at different distances above theratchet wheel and thereby determine different points at which the paw-'lvengages the ratchet wheel. The tail 374 is spring pressed against the cam faces by a spring 379. The cam is held in its Various positions by a spring 380 secured to the lever 356 and engaging with notches 383' in the cani cori'csponding to the cam faces. A linger piece 384 islfixed to the cam for `ing it.

The outer end of the lever 356 has a fork within which is pivoted an arm 387 for returning the carriage, having a hand part at its'outer end, so that it may turn horizontally to fold against the side of the machine as shown in 4dotted lines, so that it will occupy less space when not in use. A, clip 390 is supported on the lever 356 by a leaf spring 391 and has vertical portions extending beside the jointfbetweensaid leverand .the arm 387 when the latter is extended so' that the joint is made rigid when the clip is in its upper position, as it.v is normally held by its supporting spring. By pressure it canbe moved downwardlj,v until the vertical portion 393 is out of lthe path of the arm 387, when the arm can be moved forward.

0n the side of the lever 356 is a projection 394 adapted toibea i', in its depressed position, upon the ends of

levers

397 and 398. The lever 397 is pivoted at 399 in the main carriage end and has av projection 400 for engaging with the extension 401 of au arm 402, pivoted to the main carriage end at 403, to the lower end of *which one end of a rod 404k is connected. yThe rod of the carriage and at its other end is connected to a similar arm whichis pivoted t-o theother main carriage enu. The rod 404 passes in proximity to the feed dog which is normally engaged with the rack 267 and use in position-f 404 runs the length of the free end of the lever 397.' Normally l piece 428 and the tail 429 which is adapted" the rod 404 is held in forward position by a spring 414.

The lever 398 is pivoted at 399 in the carriage end and pivoted to said lever is a link 406 pivoted to an arm 407 which supports one end of a transverse bail 408 and is pivoted to the main carriage end. The bail 408 extends in proximity to the carrying lcv/ers 410 of adding mechanism l" and its other. end is pivoted upon the other main carriageend. The adding mechanism may consist of the usual geared wheels bearing numbers upon their peripheries and, as is well known, the function of the carrying levers is to transmit movement from a wheel corresponding to one denomination after a complete rotation, to a wheel corresponding to the next denomination whereby a carrying is effected between one denomination and the next. The raising 'of the bail 408, effected by pressure upon the free end of the lever` 398, restores the carrying levers, that is, moves .them to their normal osition, in readiness for another number toy e added. The bail is normally maintained in depressed position by its own weight or by springs 413.

The restoring lever 359 has the thumb Yhen depressed and the laten is in the yl I ower case position, to strike the adjacent -end ofthe lever 398 so that said 4lever will.

be operated to restore the carryinglevers, the tail 429 entering a slot 1397 in the lever 397 so that the last lever is not disturbed. In the upper case position, the tail 429 is carried beyond both the lever ends 396 and 397 and is. therefore inoperative.

To explain the operationof the line spac ing mechanism and its coperatingv devices, let it be assumed that the arm 387 is held rigidly in extended position `as shown by the full lines ofthe drawings.l To move the carriage to the right, the hand of the operator is placed on the hand part and a pressure toward the right and upwardly is exerted. The upward pressure operates to throw the projection 394 downwardly upon the free ends of the` levers 397 and 398, thus releasing the carriage and restoring the carrying levers as before described, while the pressure to the right returns the carriage to its right` hand position to begin a new line. In addition to these operations the upward move` ment of the arm 387 causes the pawl 369 to move downwardly into engagement with the ratchet wheel and the platen to be mowed to Space for a new line. The line spacing is adjusted by means of the cam 370 in a mans ner as before described. The pawl always moves through the same distance, which is esaoer limited by lever 3:56 coming against the ends of the slot 36'? in the sub-carriage and plate, and the movement of the l platen is determined by iixing the point at which the pawl engages the ratchet wheel, as before de` scribed, after which the wheel will lmove with the pawl to the end of its travel. If it be desired to restore the adding levers Without affecting the line spacing and coperatiiig mechanisms, it can be accomplished by pressing upon thc thumb piece 428 of the restoringlever 359 when the iestoriiigivill take place as before described.

lVhile the invention has been illustrated and described in connection with a combined ltypewriting and 'adding machine, it will be seen that. the features thereof relating to line spacing are not limited to use with such a machine. It is preferredto claim such features in this application and therefore no -claims are herein made to the novel features disclosed but relating to only combined typewriting and adding machines. Such features will be claimed in a divisional applica- 2.' In a typewriter, the combination with the carriage,- of a line spacing mechanism, an arm secured to the carriage and extending beyond the end thereof, said arm being connected with said line spacing mechanism and having a'joint so that its extremity may be moved to extend at an angle to the body of the arm, and means `for making said joint rigid or iexible at will, substantially as described.

3. In a typewriter the combination with the carriage, of a line spacing mechanism, an arm secured' to the carriage and extending beyond the end thereof, said arm having a joint so that its extremity may be moved to extend at an angleto the .body of,

the arm and being connected to said mechanisms, and means for making said joint rigid or flexible at will, substantially as described.

4. In a typewriter, the combination 'with the carriage, of an armsecured to the carriage and extending beyond one end thereof,

said arm having a joint so that iis extremity may be moved close to' the side of the inachine, and a clip pivotally mounted on said arm and adapted to normally make said joint rigid, substantially as described.

5. In a typewriter, the combination with rlnne, a clip pivotally mounted on said the carriage, of an arm secured to the carriage and extending beyond one end thereof, said arm having a joint so that its extremity may be moved close to the side of the machine, and a clip pivotally mounted on said arm and normally preventing lateral movement of said extremity in either direction, substantially as described 6. In a typewriter, the combination with the carriage, of an arm secured to the carriage and extending beyond one end thereof, said arm having a joint so that its extremity may be moved close to the side of the maarm and having members situated onsopposite sides of said joint, and a spring for holding saidclip in position to prevent lateral movement of the extremity of the arm,

substantially as described.

7. In a typewriter, the combination with the carriage, of an arm secured to the car-' rlage and extendlng beyond one end thereof,

said arm having a joint s o that its extremity may be moved close to the side of the machine, and a leaf spring attached to said arm and supporting means for normally preventing lateral movement of the extremity of the arm, substantially as described. Y

8. In a. typewriter, the combination withv the carriage, of an arm secured'to the carriage and extending beyond one end thereof, said arm having a joint so that its extremity may be moved toward the side of the machine to a position at an angle to the body of the arm, and a stop adjustable to and from a position to engage said arm and make the joint therein rigid. F

9. In a typewriter, the combination with the carriage, of an arm securedto the carriage and extending beyond one end thereof,.

said arm having a joint so that its extremity may be moved toward the side of the`machine to a position at an angle to the body of the arm, and means moun for making said joint rigid.

10. In a typewriter, the combinatiomwith the carriage, of an arm secured to the carriafre and extending beyond one end thereof, said arm having a joint so that its extremity may be moved toward the side of themachine to a position at an angle to the body of the arm, and stops adapted to be posltioned on opposite sides of said the same rigid.

11. In a typewriter, the combination with a platen, and a ratchet wheel thereon, of a lever movable through a fixed distance, a

joint, to hold pawl for engaging the ratchet wheel carried by said lever, and a cam adjustably mounted on the lever and having a plurality of faces at different distances from its pivot, each adapted to engage said pawl, and a yielding arm adapted to engage either of a series of recesses formed in said cam opposite the pawl engaging faces thereon, substantially as'and for the. purpose described.

12. In a typewriter, the combination with a platen and a ratchet wheel thereon, of a lever movable through a fixed distance, a pawl for engagement with said ratchet wheel carried by said lever, and a cam adjustably mounted on the lever andhaving a plurality of faces for engagement with said pawl at different distances from its pivot, whereby the position of the pawl relative to the ratchet ted arm.

Wheel and the duration of engagement of i.

said pawl'with said ratchet wheel may be varied, substantially as described.

In testimony whereof I have.sig11ed'my name to this specification in the presence of two subscribing Witnesses.

EDWIN BL CRAM.

Witnesses W. F. CARTER, WALTER N. DAvis.