US948065A - Type-writing machine. - Google Patents

Description

A. 0. SMITH. TYPE WRITING MAQHINE. APPLICATION FILED 700T. 2a, 1909.

Patented Feb. 1,1910.

UNITED STATES JZATENTR OFFICE.

ALVEUS C. SMITH, OF ST. LOUIS, MISSOURI, ASSIGN'ORIO UNDERWOOD TYPEWBIIDER COMPANY. OF NEW YORK, N. Y., A COBFORATION' OF'NEW JERSEY.

TYPE-WRITING- MACHINE,

Specification of Letters Patent. Patented Feb. '1, 1910.

1 Application filed October 23, 1909. Serial No. 524,112.;

To all 'whom it may concern: writing'machin'e. Fig. 2 is a crosssect-ional Be it known that I, ALvnUs C. SMITH, a view showing the mechanism in readinesstocitizen of the United States, residing in St. effeetthe simultaneous line-space feed of the Louis, in the State of Missouri, have intally strip and the release of the pressure ventedcertain new anduseful Improvements rolls. Fig.3 is a similar view showing'the in T yp'eJVriting Machines, of which the positions of the parts at the end of the linefollowing is a specification. y spacing stroke. Fig. at is .a detail side view 'This invention relatesto thev tally strip showing thepawl in idle position. Fig.5 is mechanism of typewritin machines, and a top plan view. j more especially to line-spacing devices there- The usual platen. 1 has'an axle'2 journaled 5 for. in the ends of a platen frame 3, which also The invention is an improvement upon the supports a tally strip mechanism, comprismechanism shown in patent to H. S. McCoring an auxiliary platen 4 in front of which mack, No. -921,019, issued. May 11, 1909, in is fed a tally stri 5 coiling ontoa winding which the tally strip is coiled on a delivery spool 6 on a r 7 usually .extendl ng be spool and fed onto a winding spool. Such tween'the ends 3 of the platen frame. i The feed is accomplished by adog or pawl mounttally strip 5 is drawn froma delivery-spool ed rigidlyfon a link connecting the usual 8 mounted for rotation in a tally strip pressure rolls of the platen with a pressure frame 9. i Y 'roll release key and engaging a ratchet wheel, The usual frontand rear pressure rolls 10 on the winding spool whenever the release runvupon the underside of the main platen key is depressed to release the pressure rolls 1, and are held --yieldingly therea'gainst by from the platen. springs 11,an'd released by a finger-ks 12,

The object of the present invention is to pivoted at 13 upon theend- 3-bf. the p aten improve the construction of the tally-strip .frame. A link 14, extending from an' arm feeding devices. I provide means to release 15 of the ke to a crank 16 on the end of a the pressure rolls from the main platen withrock shaft 1;, connects the key and out line-spacing the tally-strip, or to effect rolls. The shaft 17' is providedwith flats the simultaneous release of'the pressure rolls or cams 18 to engage arms -1 9 connected and line-spacing of the tally strip. with the roll carriers20 to release the rolls In carrying out this, invention, I provide 10 in a well known manner. Depression the pressure roll releasing mechanism with and elevation of the key 12 alternately 6 a pawl adjustable into and out of operative leases and restores the pressure rollslO, the relation with a ratchet wheel on the winddepression of the key 12 raising the link 14:, ing spool of the tally strip mechanism. and vice versa. When the pawl is thrown out of operative To efi'ect the line-space feeding ofthe relation with the ratchet wheel, the pressure tally strip 5, I provide a pawl 21 on, the rolls can be released and restored, the pawl link'l4 for engagmg a ratchet wheel 22 conthen being carried idly on the pressure roll nected to the winding spool 6, and to permit controlling mechanism. When the pawl is the operator either to release the pressure thrown into use, the tally strip is line-spaced r0115 10 without feeding the tally strip .5, whenever the pressure rolls are released. By or to accom' lish both results by the same means of this arrangement, the operator can mechanism,g mount the pawl 21 shiftably release the pressure rolls to square the leadon the link 14, asfat 23, so that it maybe ing 'edge of a sheet or otherwise adjust it on swung to efi'ective' 'or inelfective position the main platen, or to insert and remove relative to the ratchet wheel 22 at will. sheets from the machine at any time, with- Assumin the pawl 21 to be in use, as out line-spacing the tally strip, hence the shown in igs. 1, 2 and 3, the operator, by entries on the tally strip can allbe s aced depressing the pressure-roll release key 12; an equal distance apart; thestrip wil pre-. fie ts the elevation of the linklt to not sent a neat appearance and waste thereof only release the pressure rolls 10 from the will be avoided. 1 platen l which' ermitsrthe adjustment of or In the accompanying drawings, Figure 1 the removail'an substitution of sheets, but' is a. perspective view of my invention apalso causes the engpgement' of the pawl 21 plied to the Underwood type of front strike with its ratchet' w eel 22 to line-space the tally sheet 5, the positions of the parts at the beginning and at the end of such stroke being illustrated in Figs. 2 and 3.-respectively. The elevation o operator desire merely to release the pressure rolls 10, he will shift the pawl 21 by ting the pawl at 24: to permit longitudinal movement thereof relatlve to the pivot 23 and providing the pawl with a rack 27 engaging a stud 31 connecting the link 14 and arm 15, which stud not only arrests the pawl, but-maintams'lt in arrested position. Thus,

in throwin the pawl from one position to the other, its is first drawn endwise to permit'thetoothof the rack 27 to clear the stud 31, after which the pawl is, swung toward or from the ratchet wheel, to bring the next notch of its rack over the stud, a spring 28 yieldingly holding thepawl in shifted position. v

The link. 14 may carry a cain'or shoulder 29 cooperating with the axle 2 of the platen 1 during the-upward travel of the link 14, to throw the pawl 21 away from the ratchet 22 to ermit the latter to be rotated by hand -i desired, the link 14 also having the usual hook or cam 30.engaging the top of the axle -2 to return the pawl 21 toward the ratchet 22, as shown in Fig. 2.

, Variations may be resorted to within the sco e of the invention.-

'aving thus described my invention, I- claim: 4

.1. In a typewriting machine, the combination with a revoluble platen and a pressure rollto run thereon, of a tallystrip mechanism including astrip-winding ratchet wheel,

a release key connected to the pressure roll to release it from the laten, a pawl operated by'said rele'asel ey to engage said ratchet wheel to wind the tally strip, and

- means for rendering said awl meflfectlve.

2. In a'typewriting mac ine, the combina-.

.tion with a revoluble platen and a pressure roll .torun thereon, of a tally strip mechanism including a strip-winding ratchet wheel, a release key connected to the'pressure roll to release it from the platen, a pawl operated by said release key to engage said ratchet wheel to wind the tally strip, the pawl be-- ing-adjustable to'occupy anloperative or an id e relation to-t-he ratchet wheel.

3.. In a typewriting machine, the combinathe key 12 returns g the parts to inactive positions. Should'the release from the tion with a revoluble platenand a pressure roll to run thereon, of a tally strip mechan-' ism including a strip-winding ratchet wheel,

release key connected to the pressure roll to release it from the platen, a pawl operated-by said release ey to engage said ratchet, wheel to wind the tally strip, the pawl being adjustable to occupy an opera- 4. In a typewriting machine; the combination with a revoluble platen and a pressure roll to run thereon, of a tallystri mechanism including a strip-winding ratc et wheel a release key connected to the pressure roll to release it from the platen, a ivotally supported pawl operated by said re ease key to engage said ratchet wheel to wind the tally strip, the pawl being adjustable to assume an idle or an operative relation to the ratchet wheel, and a s ring for maintaining the pawl in adjuste position.

5. In a typewriting machine, the combina tion with a revoluble. platen and .a pressure roll to-run thereon, of a tally strip mechanism including a strip-windin ratchet wheel,

a release key, a link connection between therelease key and pressure roll to effect its platen, a pawl pivoted on the link for ad ustment relative to the ratchet wheel, ,means to arrest the throw of the pawl to operative and inoperative relation to the ratchetyand means for maintaining the pawl inadjusted position.

6. In a typewritmg machine, the-combination with a platen and a pressure roll to run thereon, of a tally strip mechanism including a strip-winding ratchetwheel, a release key, a link connection between the key and pressure roll. to efi'ect-its release from the platen, a pawl adjustable on the link relative to the ratchet wheel, and means for detaining the pawl in either of its positions.

ratchet, a relatively stationary member re ceived in the notches of the rack, and a spring for yieldingly maintaining the en'- gagemeht of the rack and member to hold the pawl in adjusteglposition.

VEUS G. SMITH. Witnesses:

Frances A. Hoovnn, I

R. J. JAN'I'ZEN.

for con trolling its throw toward and from the

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