US1111868A - Type-writer. - Google Patents

Description

Z. G. SHLES & J. M. PRAAZ. TYPE WRITER.

APPLICATION FILED MAY 9, 1911. 1, 1 1 1,868, Patented sept. 29, 1914.

2 SHEETS-SHEET 1.

Z. G. SHOLES & J. M. PRAAZ.

TYPE WRITER.

APPLICATION FILED MAY 9, 1911.

121.1111 11.11.@ Il/ NNW, 1 .n. hum.

ot the screw 18.

UNTTED sTATEs PATENT oEEroE.

ZALMON G. SI'IOLES AND JOSEPH M. FRAAZ, 0F NEW YORK, N. Y., ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE LAWRENCE MANUFACTURING- COMPANY LIMITED,

or LONDON, ENGLAND.

TYPE-WRITER.

Application led May 9, 1911. Serial No. 625,981.

To all whom t may concern,

Be it known that we', ZALMQN G. SnoLns and J osErH M. FRAAZ, citizens of the United States. residing in the city, county, and State of New York, have invented new and useful Improvements in Type-llfriters, of which the following is a specification.

This invention has relation to the means for holding and controlling a paper which is being written upon in the typewriter' and more particularly to means whereby the platen can be connected with and disconnected from the line spacing mechanism.

The invention is illustrated in preferred form in the accompanying drawings, where- 1n Figure 1 is a front elevation of the entire device. Fig. 2 is a plan View thereof. Fig.

3 is a sectional view taken on the line 3-3 in Fig. 2. Fig. 4 is a sectional view taken on the same line looking in the opposite di# rection. Fig. 5 is an elevation of the pawl sector. Fig. 6 is an elevation of a portion of the .spacing mechanism partly broken away. F ig. 7 is a face view of the ratchetdisk. Fig. 8 is a sectional view taken on the line 8-8 in Fig. 4. Fig. 9 is a face view of the releasing sector, and Fig. 10 is a sectionaldetail view of the ratchet release.

The platen is shown at 10 and is mounted upon the usual platen shaft 11 furnished at its two ends with a cylindrical portion 412--13 to permit the turning of Vthe platen directly by hand. The platen is fixed to the shaft 11 by any desired means and in the form shown, by theset-screw 14. One end of the platen 1() is mounted upon the hollow hub 15 of a spacing ratchet 16 which, in turn, is mounted upon the sleeve 17, turning loosely on the shaft 1'1. Said sleeve 17 is preferably fastened to the ratchet by means Turning freely on the sleeve 17 and placed flat upon the face of the spacing ratchet 1G is mounted the releasing sector 19 which is provided with a handle 20` with teeth 21, and with a releasing` projection 22. (See Fig. 6). Fitted over the face of the sector 19 is the pawl-carrying sector 23 which is provided with the teeth 24 and the pawl 25.which pawl is normally held in contact with the teeth on the ratchet by means of the spring 26. preferably acting upon the tail ofthe pawl back of the pivot -and the platen is free. marked 2, the projection 22 on the sector 19 27 upon which the pawl is mounted. (See Fig. 1).

It will be seen that by pushing the handle 20 in the direction of the arrow in F ig. 4. the sector 19 will be so turned that its releasing projection 22 will push the pawl 25 out of engagement with the ratchet 16 and thus free the platen from the line spacing Patented. Sept. 29, 1914.

mechanism which normally acts as follows:

Upon an uprightshaft 28 adjacent to the end of the platen is mounted a bell-crank lever 29, one branch of which is composed. of a toothed-sector 30 which normally engages; with the teeth 24: on the sector 23 and it is obvious that by pushing the outer handle 29 to the right in Figs. 1 and 2, the vsector 30 acts to revolve the sector 23. and to turn the platen by means of the pawl 25 and ratchet 16. Th-e return ymovement of the lever 29 is accomplished by a spring 31 which is preferably a spiral spring mounted below the lever 29 within the housing 32 and surrounding the shaft 28. This return movementhas. of course, no action on the platen as the pawl 25 merely slips idly backward over the teeth4 of the ratchet 16. The sector 19 is capable of assuming three positions which are indicated by the numbers 1, 2 andB on the left of Fig. 1 and which positions are ascertained and preserved by the engagementv of the teeth 21 with the extremity 33 of the spring 34 mounted on the carriage adjacent to the end of the platen.

Then the handle 20 is raised opposite the vnumber 1 the pawl 25 is thrown into the dotted line position shown at 35, in Fig. 6, In the, position is in the position shown in Fig. 6, and the pawl 25 1s active. only during movement through the distance of one tooth of the ratchet 16. If double line spacing is required on the paper, the handle 20 is placed in the position marked 3 in Fig. 1 when the projection 22 is withdrawn far enough so that the pawl 25 is active through the space of two teeth. ,1

The normal line, spacing is ascertained and preserved steady by means of the roller 3G l mounted on the spring 37 which normally presses against the teeth of the ratchet 16 and lies between them. The extremity -of the spring 37 bears upon a shaft 38 which is half cut away-in Fig.,10. and also as shown in Fig. 3, so thatinone position off the shaft,` Ithe spring will be pushed to the left as shown in Fig. .8, thus withdrawing the roller from the-ratchet teethy and in-the otherposition, the spring will fall against the flat face" are pivotedbelowon a common shaft 43.-

Said armsareshaped as shown in Figi 3 with substantiallyapright lportions' which* rest upon oppositesides'f of a b ar44; which is jlatpr otherwise shaped to carryout'the functonfhad "in view, andI the arms 421are held against'the b'ar`44 by'fin'eans of springs 45 surroundingsaid "bar 'at'fintervalsgas shown l, 8. In the forni shown,;the bar44 isjlattened only where it makesjcontactgwithfthe arms ,but a variety of forms .can be given to this` bar'fw'ithoutf departing from thev invention. "The-bar 44' can be rev'lved in GndbeaiiHSGahd 47fby means of 2the ,handle 48 fand' pbvious "that when turned throughan angle of90 degrees with respect to the position 'shownin Fig. 3,

the aan .portion Oft e bar M'wi'lljacltto push the arms ,42apart and'thus releasetlie paper from the gplaten.; y. AThis f QQ` degree 3 position' will hepreserved by the pressurey of the Springsaandihe aCtQn Offte .flat sur# faces of the Aarms against the edges of the flat Pertmiihebarfaa.. 1

.',llhe mea-ns, aboye described r'for pressing the paper against the underside of the pla-ten are .notherein claimed Ias the willl foi-ni@ the subject matter ofv a ,divisiona ;application.4 j,

The: :construction thus described affords ya very simple` and reliable, mechanism for carryinsggtout' the endshad in view `and one lnvolvinggconiparatiyely Afew parts.

Ourinvention maybe carried outbyinakf I Copies 'of thiszpetent maybe obtained ing' various modifications in this device, and p `we do not limit ourselves tofthe details herein shown and described.

What we claim is- A l. In a typewriter, ay platen, a ratchet wheel thereon, a roller, a 's pring mounting `for;said groller for normally pressing the same between the teeth of said ratchet, and

a revolubleshaft having a flattened portion said roller, substantially as described.

2. In a typewriter a platen provided with afratchet 16 having teethprojectinghorizontally from one end thereofa releasing sector rotatably mounted concentrically with said platen just in front of said teeth and `having a releasing projection, a pawl-carrying sector having a pivoted spring-pressed pawl adapted yto engage with said teeth and placed in thepathl of movement oi said releasing proj ection,said sector being mounted concentreally with said platen just outside.`

of said releasing sector, substantially as1 described.- f j 3'. In a typewriter, a platen having a spac- Gil ing ,ratchet'-with horizontally projecting said spacing ratchet and a pawl carrying sector rotatably mounted-outsidey of said re- .teeth, areleasing sectorplaced fiat against leasing sector and parallelto it and said ratchet, said `rpawl bearing sector having an external circumferential flange extending "--ove'r and protecting said releaslngsector and the teeth of said ratchet, substantiallyas describedf"A v 4. In a typewriter a spacing ratchet, and-a pawl-f-carrying l.sector rotatably mounted concentrically with said releasing sector, and one of said sectors hav-` j j ing an external circumferential flange, ex-

tending over and'protecting thev other'sector.

and the teeth fof; said ratchet, substantially as described.` 'l

l 4 4' ZALMON Gr. SIA-IOLES.

Witnessesf r H. SMACKAYE,

KATHARINE `G.- MEAD:

for veleents each, by addressing the Commissioner of Patents,

Wash1ngton, n. c. v

JOSEPH M. FRAAZ.

y j platen having a-,spacf ing ratchet with horizontal proj ecting teeth, areleasing sector placed lat against-the said 6( bearingagainst said spring for controlling

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