US1013020A - Tabulating mechanisms for type-writing machines. - Google Patents

Description

0. G. KAVLE. TABULATING mnommsm r01; TYPE WRITING MAGHINBS.

APPLICATION FILED MAY 27, 1907.

2 SHEETS-SHEET 1.

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Patented Dec. 26, 1911.

0. 0. KAVLE.

TABULATING MECHANISM FOR TYPE WRITING MACHINES.

APPLICATION FILED MAY 27.1907.

Patented Dec. 26, 1911.

LWEQQQ.

2 SHEETS-SHEET 2 w k K Rwg the blank from which Figs. 7 and 8 are plan views,

1115!!! givingincreased oNiii :1: ,h .f. v MECHANISM 3 FOR -TYPE-WRITING"' iMA the 'paper carriage can be quickly stopped at predetermined desired points for the production of tabulated or column work.

The primaryobjects of the invention are to produce an etlicient tabulating mechaspeed and certainty of action with the minimum strain and wear thereon and onthe typewriter; also to so construct the mechanism that the carriage can move rapidly and-will he stopped with the minimum shock and will be prevented from rebounding; also to make the mechanism of strong, durable and inexpensive construction; and also toimprove tabulating mechanisms in the respects hereinafter described and set forth in the claims.

in the accompanying drawings, eonsisting of two sheets: Figure 1 is a fragmentary longitudinal sectional elevation of a typewriting machine provided with tabulating -meehanism embodying the invention, in line 1-1, Fig. 9. Fig. 2 is a similar fragmentary view of the tabulating mechanism, showing a different position of the parts. Figs. 3 and 4 are fragmentary sectional elevations thereof in line 3-3, Fig. 9, showing two other successive positions of the stop devices. Fig. is a perspective view, on an enlarged scale, of the stationary stop lever detached.

the stationary stop lever is made. on an enlarged scale, of the stop device and the cooperating guide plate, showing two positions of the stop lever. Fig. 9 is a rear elevation of the tabulating mechanism and upper portion of the ty ')e\\-'riter-. Fig. 10 is a plan view, Fig. 11 is ,a fragn'ientary rear elevation thereof, partly in section, in line ll-l1, Fig. 10. Fig. 12 is a horizontal sectional plan thereof in line 1212, Fig. 11. Fig. 13 is a Lia-"or SYRACUSE, Niaw YORK, ASSIGNOR To, mi SYRACUSE, NEW YORK.

Specification of Letters Patent. i907. Serial No. 371E811 f Fig. 6' is a plan view of partly broken away, thereofl HINES." 1'

detail sectional elevation showing a modification of the stop.

Like letters of referencerefer to like parts in the several fig The inventionis,i il lsti'atefl., ii/connection with a visible wr ting t vpegiYritingamachine hefront 'sideiofi hr ke. on. :t

in which the type high the the platen and i platen islshi-ftable vertically for-printing upper and lower case characters, .but the improvements are also applicable to other kinds of type writing machines.

A, Fig. l,represen'ts.a portion of the main frame, B the platen, C the platen carriage,

and D a shift frame (in-,wilich;theeariaage is sit p ported and rammed transversely :ot: the machine by usual. meansennt.:showmsand1 which is pivoted at ioppositetsidesaatnd to suitable portions at; the. uppr'rean par't'o't the main frame to swing "ertically' forshifting the platen. The earria provided with a. rack bar E pinion ment mechanism (of which t nected to the shaft of ge, usual. is meshing with a governed by an ordinary eseape-' he wheel e conthe pinion e is a part) for effecting the step=by-step, or letter space movements, of tlte -caru1age.;1flhese: parts, wlth the exception- 0f:dire-"rack, which/is preferably constrpcted Z Zas presently "de scribed, may all .be ofaknowii oreany'suitable construction. I a

The rack bar shown eonsis strip' secured by screws, or flat-sided cylindrical with a toothed lower edge 'ivith the escapcmcnt pinion ts of an angular otherwise, to a rod, and is provided for engagement and serrated upper edge for holding the trav ing stop device in different?aicsired upperface of theaiaclestri'p ispt'o'videtljHvith a graduated scale for 'facil ustments of the-:stop deviee;

vThe rack bar is. seeured at opposite ends to the usual carriage release levers fulcrumed at '0'" on the ends of the can in tabulatmg mechamsn-is, n'iovements of the fftllllitgt iage. As usual, the irregular necessary for tabulated work are effected by releasing the carriage from the -controll and providing one orniore the carriage adapted" to stril relatively fixed stop device t riage at the desired"- point ing esca1 )ement need Dec. 26,191}.

'100 stop deviceson ea cooperating o arrest "the caror'pointsi" For clearnes's of description the stop device F on the carriagewill be herein termed the movbe termed the stop;

movable stop is retained on the rack bar by a segmental cylindrical socket embracing the cylindrical rod of the rack bar, from which it extends rearwardly, and has teeth f, Fig. 9, to engage the serrated upper edge of the rack bar to hold it in adjusted position. The movable stop can be pushed along the rod to any desired position by first swinging it upwardly to disengage its teeth from the serrated edge of the rack bar, and preferably the socket of the stop is of spring temper and grips the supporting rod with sufficient force to hold the stop stationary at any desired point thereon when swung up out of engagement with the serrated edge of the rack bar. When the tabulator is not in use, the movable stops are thus swung up out of operative-position. The free end of the movable stop, which extends reara purpose which will appear later; The rack bar could be of other construction and the movable stops adjustably secured thereto in any other suitable manner.

The stop G on the shift-frame consists of a substantially upright lever provided at its upper free end with a guide lug or finger g, and below this with laterally projectingrearwardly and forwardly opening hooks g g, respectively, one below the other, see Figs. 1-8, these parts being for apurpose to be explained. The stop lever can be conveniently formed from a sheet metal blank of .the shape shown in F i 6, by bending the parts g and thereof eral hooks. The stop is pinned or otherwise securedto a horizontal rock-shaft II journaled at its ends in suitable bearings It hi, Figs. 9 and 11, on the shift frame, and stands beside an upright post It on the shift frame. When the movable sto strikes the stop G to arrest the carriage, it forces the same against the post II. which thus braces the stop and prevents injury thereto. The

stop G is swung forwardly and rearwardly and out of the path of the movable stops by rocking the rock shaft H. or o crating the rock shaft it is preferably provi ed near its outer end with an arm it connected by a link i to a lever i pivoted on the main frame beneath the top plate and connected by a rod i to a tabulator key lever Iwhich is fulcrumed on the frame and extends forwardly to the keyboard; The rock shaft is held in normal position and returned to wardly beyond the rack bar, is provided with an upturned hook or projection f for-- to form its lat:

such position after actuation by a suitable spring,-such asthe spring 5", Fig. 9, sur.-' rounding the rock shaft and connected thereto and bearing against an adjacent part of the shift frame. The link 2' connecting .the rock arm 71. to the lever z" is preferably so arranged that in the normal position of the shift frame, shown in Fig. 1, it inclines rearwardly from a line passing through the ivotal axis of the shift frame and the pivot oining the link to .the lever 11', whereas when the. shift frame is raised to shift the platen, it swings across such line and inclines forwardly therefrom, so that the same depression of the tabulator key I will roduce equal movements of the rock 'sha t in both positions of the shift frame.

I. is a rock arm extending forwardly from the rock shaft over one end of a rack, releasing lever K,'\Figs. 10-12, which is fulcrumed b a suitable pivot k on the shift frame an is provided at its other end with.

a rounded projection k adapted to engage the rack bar to lift the same,out of engage'- ment with the escapement pinion without preventing the horizontal movement of the jbackward movement when the rack bar is released from the pinion e.

-M represents a guide plate \VhlCh'lS fixed to the upper end of the 0st b on the shift frame. This plate, see Figs. 7 and 8, is provided with a,slot m. in which the finger g on the u per end of the stop lever G engages an slides forwardly and rearwardly, and at one side of the front end of said slot with aishoulder or notch'm' for receiving.

the finger to lock the stop lever in the forward position shown in Figs. 2 and 7. The stop lever is made of spring metal, or other means are provided tending to, move the lever laterally toward said locking notch so that when the finger at its upper end leaves .the guide slot m it will spring into said notch'to lock the sto forward.

- The stop lever ma e of spring metal is an inexpensive and desirable construction, but if preferred, a stop G, Fig. 13, pivoted or otherwise mountec to vmove laterally and] having a separate spring 9 for so moving it, could be employed.

The operation of the tabulating mechanism as thus far described is as follows: When it is desired to use the mechanism the movable stops are adjusted to the proper ositionslengthwise along the carriage, as

mdicated by the scale on therack bar, de-

pending upon the points at which it is desired to stop the carriage, and their. teeth engaged with the serrated edge of the rack bar. The normal position of the parts is 'shown in Fig. 1, from-which it will .be seen forward with its are turnediup as indicated by broken lines in Fig. 1. The depression of the tabulator key I, through the described connections, rocks the shaft H and swings the rack releasing lever K on' its fulcrum, thereby lift- 10 ing the rack bar out ofengagement with the escapenie'nt-"pinion and at the same time swinging {the stop forwardly into the patli off-tl finova'ble stop." 'The carriage be- '-'"1n;*"-tli'en,released from theescapement is moved Co-the left by its driving spring until arrested by the engagement of the movablestop with the stop G. The hooked rearend of the movable stop strikes the stop G betweenthe two hooks g and 9 thereof, I 2 the parts then being in the position shown in Fig.-2. "When thefstop moves forwardly to intercept the -moval5le stop, it springs away fr'o'm' tliie post's and its finger g snaps into the locltiiig'notchf'inf, which holds itfeai'wa'rdly opening hook g in front ot the ."th ofmovement of the hook-[on' the"m'ovahle stop, and locks the parts in the position shown-in Fig. 2. This "action is desirable as it enables the operator to depress the tabulator key with the quick movement"required for the type-bar keys andrelieveshitn ofthe necessity of holding the key down until the carriage has tcon-iplet-ed-i' its .-m o\- ement'= -It also prevents injury: stflli tlflfi parts" by insu'ring the proper contact? z'the-smps.- KVhenthe stop G is strupk' hythe movable-"stop it is released from Jthe locking notch-m and pressed over against the post h" "in opposition to its 4o spring action, which serves to cushion the blow of the carriage, thereby reducing the shock, noise and wear of the parts to an important degree. .The: stop being thus dis- ;engaged froniits holding notch and its fingerg-gqbrought opfpjosite to the guide slot m in the;,plate M fitsvillbe moved rearwardly in saidslot,byitheiieturn spring 2' for therock, shaft jH un til its rearwardly opening -,;hoo' k g',engages-the hook of the movable came: This partial retuignpf the stop G freqsdhe, rack releasing lever K and permits thei I at ofallenonghfor the hook of th Lin ableo reaiwvardly o ienip hook g1" ahd. drop beside the forll opening: hook K? o shoii 'n n Fig. 4, whichfa'llo s the stop G to cm'fplete its rearward or,i;eturn movement buf'actsas a guard tolpjre nt the carriage froiii' r bounding (lurin'g'tl light interval 6} to reach its stop, as. shown in Fig. 3, which looks thecarriage against rebounding, or insures the fl -the stop G, as.

initial position. This hook g is not so es sential as the other hook g but aifords an additional safeguard against the rebounding of the carriage. When the stop G is fully retracted, the parts will be again in the normal position, shown in Fig. 1, and the carriage under the control of the escapement so that the writing can be done.

From the above description it will be seen that the stop G is advanced with two motions, first forwardly and then laterally, and that it returns with three motions, first laterally and then backwardly, coming to a stop so as to divide the backward movement into two steps. Thus, in effect, a maze is formed through which the movable stop must find its way in two directions with a restor dwell before it can resume the normal position, which allows a quicker action of the tabulator key, prevents rebounding of the carriage and greatly reduces noise andwear.

Preferably thest-rength of the spring operating the stop G is such that the carriage spring will hold the stop against the post it, but as the return spring i for the rock shaft -H draws the stop back into the guide slot before 7 the carriage has time to rehound, a stop spring of, greater strength than the carriage driving spring could be employed. In such case, however, the return spring i for the rock shaft would have to be correspondingly heavier. The stop devices constructed and operating as described are not dependent upon the particular manner of mounting them and the particular connections for swinging the stop G and releasing the carriage, and other means can be employed for these purposes. Furthermore, the interlocking hook construction of the stops would be desirable with a rigid or non-yielding stop G. The mechanism as described is efi'ective for use with a light carriage, or for a heavy carriage if the stops are arranged at comparatively shprt intervals, but for the most perfect action this mechanism is supplemented by a speed controller which allows the carriage to jump over long spaces without severe shock or excessive wear on the parts,

The speed controller preferably consists of a rotary governor fan with speed gearing dri}ie, r ,by-tlie rack bar which regulates the spe d of the carriage. i v

ih represents the fan consisting of a metal pl att a ppovided centrally ywi-th a sleeve or 'hl;1b, v'hio h is journaled to-rotate on an ex- .t ensi on ofthe pivot "for: ther-ack releasing vl np'h;1s .our naled-in a suitable. bearing on the egsing lever'K and is provided at its and the fan rotated rapidly enough for the air resistance to prevent excessive speed of the earr1age.- This controller is of simple and light construction, is noiseless in use,

and as the air forms the resisting medium, it is not affected by changes in temperature, dirt, oil and other conditions that interfere with the proper action of governors depending upon friction, spring action and centrifugal force. There is also less friction and wear on the parts and the wear cannot interfere with its action so as to require readjustment. This fan overnor could be used to advantage with ta ulatmg mechanisms of other construction, and, as

before stated, the described tabulating mechanism would be useful without a speed controller or governor.

I claim as my nvention:

1. In a typewriting machine, the combination of a carriage, a rack-bar movably mounted on the carriage, one or more stops on said rack-bar, a cooperating stop, and means for moving both stops-transversely of the direction of movement of the carriage into position for one to strike the other in the movement of the carriage, substantially as set forth.

2. In a typewriting machine, the combination of a carriage, an escapcment therefor, a stop traveling with the carriage, a cooperating stop, means for releasing the carriage from the escapement and causing one of said stops to strike the other in the movement of the carriage, both of said stops being' movable transversely of the direc ion of movement of the carriage for first 1nter-- looking with each other to preventthe rebound of the carriage and then clearing each other, substantially as set forth.

3. In a typewriting machine,- the combination of a carriage, a rack-bar pivoted thereon, a series of adjustable stops on said rack-bar, a movable shift frame for the carriage, a stop on said shift frame,and means for moving both stops transversel of the direction. of movement of the carriage into position for one to strike the other in the movement of the carriage, substantially as set forth.

- one or more adjustable stops on said rack-' bar and movable withthe carriageftmd a yielding stop for intercepting the adjustable stop, substantially as set forth.

5. In a typewriting machine, the combination of a carriage, an escapement therefor,-one or more stops movably mounted on and movable with the carriage, a pivoted yielding stop normally outof the line of movement of said movable stops, and means for. moving both stops transversely of the direction of movement of the carriage. into position for one to strike the other in the movement of the carriage, substantially as set forth.

6. In a typewriting machine, the combination of a carriage,'one or more stops movable .with the carriage,- a cooperating stop, and means for moving said stops into intercepting position, said stops being construcb ed to interlock with each other to prevent the rebounding of the carriage and the immediate return of the stops tothe normal position, substantially as set forth.

'I. In atypewriting machine, the combination of a carriage, a bar thereon, a series of adjustable stops supported thereby, a stop constructed to intercept eitherof the adwstable stops and-automatically interlock therewith, and means for moving said stops into intercepting positibmsubstantially as set forth.

8. In" a typewriting machine, the combination of a carriage, one or more 'sto s moya ably mounted thereon, a. movable shi frame for the carriage, a cooperating stop sup-- ported by the shift frame, means for mov- In both stops into position to engage each I ot er by the'movement of the carriage, and an automatic latch for mtaining said stops in such position regardless of the moving means until the stops enga e and then releasirig the stops, substantia 1y as set forth. I

a typewriting machine, the combination of a carriage, one or more stops movable thereon transversely of the direction of movement of the carnage, a cooperatingstop which intercepts and interlocks with said carriage stop and retains such interlockingengagement until the carriage stopmoves transversely to the line of the carriage movement, andmeans for moving the cooperating stop into engaging-position, substantially as set forth.

10. In a typewriting machine, the combination'of a carriage, one or more stops movable thercon transversely of the direction of movement of the carriage, anda manually; operated cooperatin stop which intercepts the carriage stop an interlocks therewith to prevent the rebounding of the carriage, said carriage stop being released by its transverse movement from said other stop, and means ,for automatically returning both stops to their normal positions, substantially as set forth.

the carriagmand an intercepting stop hav-' 1].. In a typewriting machine, the combinatioir of-a carriage,-

stopzmoval'ile therewit-11,1: e'ooperatingstop, means for moving said cooperating. stop'in'to the path of movement of said stop on thecarriage, and means for moving said eoi ')erating stop to cause it to temporarily interlock with said carriage stop after! said-stops contact, said carriage stop being-movable on the carriage to release it frominterlocking engagement with said cooperating stopeanchpermit the latter to move out-of tl-iep'atlrof-saiet stop on the carriageasubstantiall-y. I setfonth.

l2. Ina typewriting machine, the com bination of a carri age,-;'one orm'ore carriage stops movable with thecarriage, a cooperating intercepting stop constructed to arrest either of the carriage stops, said carriage and intercepting stops being relatively movable to temporarily hold the carriage stop against movement either forwardly or backwardly, substantially as set forth.

13. In a typewriting machine, the combinationof a carriage, one or more stops movable with the carriage, and an intercepting stop which the movable stops pass by movements in two directions, sul'istantially as set forth. 14 In a typewriting machine, the combination of a carriage, a stop movable with the carriage, and an intercepting stop, said stops having an interlocking construction requiring an. intermittent motion of each stop to enable one stop to clear the other, substantially. as set forth.

15. In a typewriting machine, the com bination of a carriage, a bar thereon and moving therewith, a stop supported by and moving with said bar, an intercepting stop normally .stationary and out of the line of movement of the movable stop, and means for moving the stationary stop into line with the movable stop, the stops acting to first contact on said line and interlock thereon, and then to unlock in returning to their normal positicms, substantially as set forth.

16. In atypewriting machine, the com--1- bination of a carriage, a stop movable with ing a pair of opposable hooks through which the movable stop passes after having been intercepted, substantially as set forth.

17. In a typewriting machine, the combination of a carriage, cooperating stops therefor, one of which is movable with the carriage, means for moving said stops transversely of the direction of movement of the carriage into intercepting position, one of said stops having oppositely directed hooks, and the other having a ho k arranged to pass between and interlock successively with the two hooks on the first stop, substantially as set forth,

18. In a typewriting machine, the com-. bination of a shift frame, a carriage supported by the shift. frame, a rack-bar on the carriage, one or more stops carried by said rack-bar, an escapement wheel on the shift frame, a rock shaft on the shift frame, and a pair of stopson the rock shaft acting to intercept the carriage stops and escapement wheel,substantially as set forth.

19.. In a type'writing machine, the combination of a shift frame, a carriage sup-' ported by the shift frame, a rack-bar on the carriage, one or more stops carried by said rack-bar, an escapement wheel on the shiftframe having connection with therack-bar, a rock shaft on the shift frame, and three arms on the rock shaft acting to release the rack-bar from the escapement Wheel, inter-; cept said stops on the carriage, and loelcthe wheel against baclm ardmovement, substan' stantially as set forth. 4 1 20. In a typewriting machine, a tabulator' stop bar having a serrated portion anda portion-of segmental circular cross-section;

and a stop device having an extending rigid part forming a stop and provided with-atooth to engage the serrations of the bar and. integral spring jaws which grasp the segmental circular portion of the stop bar and permit the stop device to be turned thereon to move its tooth into and out of engagement with said serrations, substantially as set forth.

21. In a typewriting machine, the combination with the carriage, of an escapement wheel for the carriage, a rack-bar controlled by said wheel, a rock shaft having a pair of- 100 projecting arms one acting to release the. rack-bar from the escapement wheel and the other acting to lock said wheel, and means for rocking said shaft, substantially as set forth.

22. In a typewriting machine, the combination of a main frame, a carriage, a shift frame for the carriage pivotally supported by the main frame, cooperating tabulating stops supported by the carriage and'the-shift 110 frame, a tabulator key or lever supported by the main frame, and connecting means between the key and the stop on the shift frame whereby said stop is caused to move substantially the same distance with the 1'15.

shift frame in either of its positions, substantially as set forth.

23. In a typewriting machine, the combination of a main frame, acarriage shift frame pivoted'on the main frame, a tabula- 120 tor stop supported-by the shift frame, a tabulator key or lever supported by the main frame, and" a link having a pivotal connection at one ehd with the key and at the other end with the stop, the end of the link 125 connected to the stop being arranged to swing over a line passing through the piv' otal connection at the other end of said link and the pivotal axis of the shift frame, substantially as set forth. I

.24. In a typewriting machine tahula ng mechanism, the combination of a carriage,

an escapement mechanism therefor, a rackbar normally in operative connection with said eseapement mechanism for controlling the movement of the carriage, a lever for releasing said rack-bar from the escapement mechanism, a rotary fan for controlling the speed of the carriage when the rack-bar is released from the escapement mechanism,

a and gearing which is carried by saidlever and is placed in driving'engagement with said rackdaar by the movement of said lever to release the rack bar from the escapement mechanism, substantially as set forth.

25. In -a typewriting machine tabula'ting mechanism, the combination of a carriage,

.an escapement mechanism therefor, a rackbar normally in operative connection with saigl escapement mechanism for controlling the movement of the carriage, a lever for re leasing Silltl rack-bar from the escapement.

nleclulnism, a rotary fan for controllihg the speed of the carriage when the rack-Inuis released from the escapement merhanism,

'said fan being journaled (-on .-entri(-alI with the pivot for sa d lever, and gearing Which OSCAR C. KA VLE.

' Witnesses: Orro A.'Scn1LLY, FRANK REID.

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