US1856712A - Typewriting machine - Google Patents

Description

.M y 3, 1932- AG. F. KUROWSKI 56,712

TYPEWRITING MACHINE Filed May 23, 1929 Patented lit lay 3, 1932 UNETEB? STATES ALFRED G. F. KUR-OWSKI, OF BROOKLYN, NEW YORK, ASSIGNOR T UNDERWOOD ELLIOTT FISHER COMPANY, OF NEW YORK, N. Y., A GOREORATION OF DELAWARE TYPEWRI'IING MACHINE Application filed May 23,

This invention relates to typewriting and like machines, and more particularly to the tabulating mechanism of such machines.

When the tabulator-key of an Underwood typewriter is depressed, the carriage is released and travels to a desired point, being brought to a standstill by stops which are brought into efiective position by the depres sion of said key.

The tabulatonframe and the stops carried thereby, being at the rear of the typewriter and obstructed from the view of the typist, it is usually necessary to rise to look at the scale on the tabulator-frame in order to correctly set the tabulatorstops. This method is tedious, slow and unsatisfactory, and sometimes results in the stops being improperly placed. 7

It is therefore an object of the present invention to provide a device which will eliminate the mentioned procedure and enable the typist to quickly and accurately set the tabulator-stops while seated and without seeing them.

Another object is the provision of means for locking the carriage to the tabulatorframe while a. stop is being set, so that the carriage may not be accidentally displaced from the position in which ithas been set for indicating the proper position of a stopl A further object looks to mechansm by which stops may be set without reference to a scale.

A feature of theinvention is an arrangementh whereby the setting of a stop unlocks the carriage, leaving it free for typing action, or for a resetting to indicate where another stop is to be placed.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a perspective view of a rear portion of a typewriter, including tabulating mechanism and the device of my invention, as applied thereto.

Figure 2 is an enlarged perspective view of the middle portion of Figure 1.

Figure 3 is an elevational view of the essential elements shown'in Figure 2.

Figure 4 is a sectional side view of a type- 1929. Serial No. 365,276.

writer, including tabulating mechanism, only such parts being shown as are necessary to illustrate the present invention. I

Figure 5 is a sectional side view of a portion of the tabulating mechanism, showing a tabulator-stop disengaging a guide from the stop-bar. t

Figure 6 isa view similar to Figure 5, showing the guide in disengaged position and a stop engaging the stop-bar.

Referring to the drawings, a type-bar 1 is swingable upwardly towards a sheet of paper 1* positioned against a side gage 1 and on a platen 2 mounted in a platen-frame 8 on a carriage 4-, which is in a carriage-frame 5, the carriage being provided with a pointer 4 placed over a scale 4 on the machine-frame. The carriage rides upon parallel rails 6, and is urged in a letter-feeding and tabulating direction by a spring-motor 7, to which the carriage is connected by means of a strap 8. The usual escapement-mechanism for letterfeeding includes a universal bar 9 actuable in the usual manner by a heel of any typeba'r. A rearward extension 9 of the universal bar engages a dog-rocker 10 and causes the dog-rocker to vibrate upon each stroke of a type-key. The dog-rocker is pivoted at 9 and has thereon, besides a fixed dog 11, a loose dog 12. These dogs co-operatewith an escapement-wheel 13, to which is fastened, by means of the usual one-way driving connection, a pinion 13 The pinion meshes with a letter-feeding rack 13 'mounted on arms 14 and pivoted to the sides of the typewritercarriage.

The usual column tabulator-frame 15 is pivotally supported at its ends on a typewriter-frame 17 by pivot-screws 18. The column tabulator-frame 15 includes a rack or stop bar 20 having a scale 21 marked thereon and a circular rod 22, the latter carrying slidable column tabulator-stops 28 rotatably movable into and out of interlocking engagement with the rack-bar and having handles 23 The lower portion of the rack-bar, which is also known by the terms tabulator-bar, tabulator-rack and stopbar, has a' rack formation of spaced teeth and interdental spaces 27 the latter accommodating tenons 28 formed on the stops 23. The stops 28 are in elfective or operative position to limlt the movement of the carriage when they are in engagement with the rack-bar 20, and are brought into the path of a. carriage-detent 30 formed. on. the bottomof aplate 31 WlllCll 1s afiixed to a portion 32 of the carriage 4 by screws 33. The stops 23 may be brought into the path of-the deteut3Gbyrockingthe tabulator-trame' to advance it from the back-- wardly-inclined portion shown in Figure 1 to a substantially vertical position, this movement being accomplishedby striking. a tabulator-key 37, shown in Figure 4. The depres sion. ot the.- key 31 is;eiEective-to rockxforwa-rdly the. tabulator frame 15, through the antionu of a key-leverc38, avertically disposed drawlinlr 40'and a; member: 41 which is. rigidly connected to. the frame,,the draw-link being.

I typewriter is provided, whereby the forward rocking: motion of. the tabulator-i'rame releases the carriage'fon' free; movement, per:- mitting it to move until the detent 30-co me's' against a stop123, which has "been thrown: lnto itspath by theforwa-rd: movementof theta-bulatontrame;

includes: an arcuate: guide, tooth :onstopposiztion finder 4-5. which-may be:rnovedi'into', and

out. of, co-operati-ve relation; with the. stop:-

bar 20Eto-limit themovement 0t; thewstop' 23 as thelatter is moved? along.itszsupporting; rod. 22... Secured to the guide: is: a: pointer 21? positioned over thescale 21- The..-guidemay be thrown int-clocking engagementwitlr the rackebar 20,.its freeend enteringauxin.- terdental' space 27', and,,to' providesfor such movement, it is pivotally mounted on a' pivot-- pin-.46whiehis -carriedbyabracket'47 formed asam extension ofi the-plate 31 fasttothe' canriage- The gui de. thus travels: with the. car;-

ria e and when in en a ement. with the" t3 7 7 b b rack-bar 20, locks the carriage andz'prevents it' from accidental displacement while: aastopi23r is being moved against the guide.

A. V-sha-ped. springi49, secured toxthe bracket. 47; by screws 50,.is provided; to: hold the guide in. or. out oiiengagement: with: the.

stop-bar, as'the. case-maybe Thespring contacts with a; pin 52: whichzis fixed to, and extends-- outwardly from, the: guide: 45,. the lower incline dporti on of. the: springfunction ing; to hold. the guidein. engagement with. the rack-bar, as shown in. Figures 1': and; 2, and the upper inclined portion acting to hold the guideout oi engagement with the'same. The pin. 46, onwhichthe guide is mounted, ex tends through a slot 54 in; the :spring 49' to' giveadded support t'OzllhE latter.

When a stop 23 has been moved along the rod 22 until it abuts the guide 45, it is swung into engagement with the rack or stop bar, and, in that movement, a member 55, secured to the stop, is pushed against a narrow ledge 56 extending from the guide, as shown in Figure 5, and. thus withdraws the guide from engagement with the rack-bar and lifts it to the position shown in Figure 6, in which positioirit-is held by the spring 49. The width ofthe ledge 56 is preferably not greater'than the width. of a tooth 25, so that a stop will notdi'sengage the guide from the stop-bar un less. the stop contactsthe guide, whereby the carriage remains locked until the stop is correctly positioned. In.- other-wo-rds, if the typist attemptstoproceed after incorrectly positioninga stop, the machinev will not' function, and'the operatorisapprisedthat the stop is not in its proper place. The disengagement-oftlie. guide from the rack or stop bar leaves the-carriage free for movement'if. typing" is to be done after setting: one: stop, or tree to be moved to anotherposi'tion it anotherstop isto. be set in the stop-bar;

WVh-ere: it is desired to type" on sheets having; columns, the tabulator=stops, being first moved-over totheextremeleftofthe carrying rod. 22,. may be set in. the: following manner. The usual: side-edge gage 1? may be first positioned. towherethe left edges ofithe sheets are: to: come. The sheets are. then inserted into the machine against the side-edge gage. The carriagezisthen: movedto the right-until the extreme:lefit-hand. line on the sheet, which indicates-the beginning-of the second column, is;-'b'rought tothe printing point, the first col umn; beingautomatically' positioned by the carriage return, and then the novel guid'e4'5 is swung down to effective position to thereby lock thecarriage inthe set position. A column-stop is then slid along'its carrying-rod 22: against theguide and swung into locking engagement with the stop-bar 20', which swinging operation simultaneously releases the guide;- The carriage is then moved towards the left until the second vertical'line or the beginning of the third column is brought tothetyping position, and then the guide 45 is again moved to lockingposition with thestop-bar and a tabulator-stop set, the carriagethen being moved further to the left to bring the third vertical line into the typing position, so that another tabulatorstop may be set, and so on until alslthe tabulator-stops areset for thevarious' columns.

It will lee-noted that when the carri is positioned at a: stop-setting position, the depression'of the stop-position finder locks the carriage against displacement, and the correct setting" ofthe stop upon the rack automatically releasesthe carriage from its interlock with the finder. Hence, the column-stop cannot be set at a position indicatedb7." the finder without releasing the carriage from the interlock, and the carriage will not be released if the stop is incorrectly set at any other position not predetermined by the finder, and as the carriage cannot accidentally or otherwise be shifted either way after the depression of the tinder, and cannot be released except by the correct setting of a stop, the operation of setting the stops along the tabulator-bar from the front of the machine is absolutely error-proof; and that the tooth is manually se table to either a rack-locking position or a rack-releasing position independently of the setting or" the stop.

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, I claim:

1. In a typewriting machine, the combination with a movable carriage and a nontraveling rack, of a column-stop adjustable upon the rack, and a tooth on the carriage, movable into mesh with the rack to detain the carria e, said tooth being normally out of the path of said column-stop, but serving as a position-finder to arrest and locate said stop when the tooth is in mesh with the rack.

2. In a typewriting machine, the combination with a movable carriage and a nontraveling rack, of a column-stop adjustable upon the rack, and a tooth on the carriage, movable int-o mesh with the rack to detain the carriage, said tooth being normally out of the path of said column-stop, but serving as a position-finder to arrest and locate said stop when the tooth is in mesh with the rack, said tooth having means for holding it in mechanical interlock with the rack.

3. In a typewriting machine, the combination with a movable carriage and a nontraveling rack, of a columnstop adjustable upon the rack, a tooth on the carriage, movable into mesh with the rack to detain the carriage, said tooth being normally out of the path of said column-stop, but serving as a position-finder to arrest and locate stop when the tooth is in mesh with the rack, said tooth having means for holding it in mechanical interlock with the rack, and means movable with the stop when being set upon the rack and engageable with the tooth to break the interlock of the tooth with the rack and release the carriage.

In a typewriting machine, the combination with a movable carriage and a nontraveling rack, of acolumn-stop aniustable upon the rack, a tooth on the carriage, movable into mesh with the rack to detain carriage, said tooth normally out of the oa h of said column-stop. but serving as {3G3} tion-finder to arrestand locate said stop when the tooth is in mesh with the ck, said tooth having means for holding it in mechanical interlock with the rack, and cammin means on the stop, operable when the stop is positioned against the finder and set upon the rack, to engage means on the tooth and forcibly disengage the tooth from the rack to release the carriage.

5. In a typewriting machine, the combination with a movable carriage and a nontraveling rack, of a column-stop adjustable upon the rack, a tooth on the carriage, movable into mesh with the rack to detain the carriage, said tooth normally out of the path of said column-stop, but serving as a position-finder to arrest and locate said stop when the tooth is in mesh with the rack, said tooth having means for holding it in mechanical interlock with the rack, and camming means on the stop, operable when the stop is posi tioned against the finder and set upon the rack, to engage means on the tooth and forcibly disengage thev tooth from the rack to release the carriage, the camming means on the stop having a co-operative tooth-engagement of less than a rack-tooth space, so that the cam becomes ineffective to cam the tooth and release the carriage, it the stop is not set upon the rack at the exact position predetermined by the rack-locking tooth.

6. In a tyewriting machine having a carriage, the combination with a rack and a tabulator-stop adjustable along said rack to be moved into and out of interlock with the teeth at different points, of a guide on the carriage, movable into and out of interlock with the teeth of said rack to lock the carriage at a stop-setting position, and means on said stop, operable as the stop interlocks with said rack, to force said guide out of interlock with said rack to release the carriage.

7. In a typewriting machine having a car riage, the combination with a rack and a tabulator-stop adjustable upon said rack to be moved into and out of interlock with the teeth, of a guide on the carriage, movable into and out of interlock with said rack to lock the carriage at a stop-setting position, means operable as the stop moves into interlock with said rack, to move said guide out of interlock with said rack, and a single detent, operable to hold said guide in or out of interlock with said rack.

8. In a typewriting machine having a carriage, the combination with a stop-bar and a tabulator-stop movable into and out of engagement with said bar, of a guide for said stop, said guide being mounted on the carriage and movable into and out of co-operative relation with said bar to aid in positioning said stop, and means movable by said stop as the latter moves into engagement with said bar to move said guide out of co -operative relation with said bar.

9. In a typewriting machine having a carriage, the combination with a stop-bar and a tabulator-stop movable into and out of engagement with said bar, of a guide for said stop, said guide being pivotally mounted on the carriage and movableinto and out" of co operative relation with said bar to aid in positioning said stop, means movable by said stop as the latter moves into engagement li 'with said bar to move said'guide out of cooperative relation With said bar, and springmeans for holding said guide in or out of engagement With said bar. 10. In a typeWrit-ing machine having a carldriage, the combination With a stop-bar and a tabulatonstop movable into and out of engagement with said bar at diflerent points, of a guide on the carriagemovable into and out of co-operativerelation with said bar to 35=aidin positioning said stop, means movable by said stop as the latter moves into engagement with said bar to move said guide out of co-opel'ative relation with said bar, and a two-position detent on the carriage, operzo ahle to hold said guide in or out of engagement with said bar.

11. In a typewriting machine having a traveling carriage, the combination With a non-traveling rack having a tabulator-st'op- 25' settable thereon, of a guide on the carriage, operable to interlock With the bar to lock the carriage and guide the setting of the stop upon the rack, and means on the guide, actuable by said stop only when the stop en- 36 gages with the guide, forunlocking said car-- riage.

ALFRED G. F. KURO WS-Kli Lil v

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