US755608A - Tabulating mechanism for type-writing machines. - Google Patents

Description

PATENTED MAPI-29, 1904.

I M. H. BLAKBSLEII. TABULATING MEGHANISM IOR TYPE WRITING MACHINES.

APPLICATION FILED IAN. 17, 1903.

2 SHEETS-SHEET 1.

EO MODEL.

I I I s II Im I .I\ I I .N monw y Wc/TZrzesses.

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PATBNTED MAR. 29, 1904.

y f M. H..BLAKESLBB. TABULATINGA MECHANISM PoR TYPE WRITING MACHINES.

APPLICATION FILED I-AN. `1'7, 1903.

2 SHEETS-SHEET a.

H0 MODEL.

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PATENT 'Patented March 29, i904.

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MANLEY H. BLAKESLEE, OF BUFFALO, NEW YORK, ASSIGNOR TO JARVIS TYPEWRITER TABULATOR COMPANY, OFBUFFALO, NEW YORK.

' TBULATING MECHANISM FCR TYPE-WETTEN@ MASI-HAVES.

y SPECIFICATION forming part of Letters Patent No. 755,608, dated March 29, 1904.

Applicationiiled January 17, 1903. Seria-lilo. 139,448. (No model.)

ATo a/ZZ whom it may concern:

` Be it'known that I, MANLEY H. BLAKESLEE,

a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improve'- ments in Tabulating Mechanism for Type- Writing Machinea of which the following is y a specification.

This invention relates generallyto tabulatingmechanism for type-writingmachines, but

more particularly to improvements in the tabulating mechanism described and shown in Letters Patent of the United States ,No,

699,389, granted to the Jarvis Typewriter t Tabulator Company, and -in an applicationV for` patent nled by Harold Jarvis and myself on the 1st day of February, 1901, Serial No.

45,6%. Such mechanism comprises, essenmoved into or out of the path of said tappets for intercepting or clearing the same, and a row of tabulating-keys 'for moving said dogs into their operative positiongthese keys when pushed acting also to throw the ordinary stepby-step feed mechanism of the carriage out of action and subsequently permitting said feed mechanism to return into action for arresting the paper-carriage at the desired point in a manner common to this class of tabulating devices. In the construction shown and described in the above-mentioned patent and application the dogs are mounted on a slide or carriage y movable laterally of the dogs, and the latter turn the projected dog to its retractedy position.

If a careless operator should push a tabu lating-key after the last tappet on the papercarriage has passed beyond the dogs, the projected dog will remain in that position in the absence of some means forretracting it, inasmuch as the release of the elevated restoring- 'bar depends upon. the forward movement of the dog-carriage. In drawing the paper-carriage back to its initial position its rearrnost tappet will therefore forcibly strike the projecting dog, blocking the return of the carriage and rendering the tabulating mechanism liable to be injured or broken.

One of the objectsof my invention isto provide reliable means for automatically retracting4 the dogs under the above-described conditions, so as to-avert all danger of injury to the tabulating mechanism and permit the unrestrained return of the paper-carriage at all times. p

A further object is to improve the construction of the carriage-tappetsand their supporting-rack so as to insure the proper insertion-,l

of the stops in the seats of the bar.

In the accompanying drawings, Figure l is l. Fig. 3 is a cross-section, on an enlarged scale, of the tappet-rack of the tabulating mechanism. Fig. a is a longitudinal section thereof in line 4c a, Fig. 3. Fig. 5 is Va top plan viewyof the machine, a` portion of thev tappet-rack being broken away to expose Vthe parts below it. Fig. 6 is a view similar to Fig. 3, showing a modification oi' the tappet and rack.

Similar letters of reference indicate corresponding parts throughout theseveral'views.

A indicates the stationary frame of the machine, B the rear portion of the customary paper-carriage, and B its vertically-swinging carriage is advancedby the usual spring-drum, which is not Islio,wnfifrr the drawingaand con"- trolled by 'f a uniformbi' 'step-'by-step feed l mechanism of any suitable or well-knownconfront portion, which carries the platen b.. The

struction. .lhe Jfeed mechanism shown in the drawings consistsl oi' a longitudinal shaft c, j ournalefl on thc/lop frame ot' the machine and provided at its-rear end with an escapeinent-wheel w and at its .opposite end with a gear-pinion c, which meshes with atransverse gear-rack c, mounted on the carriage and movable into and out ot' gear with said pinion Jfor cooperating with the tabulating mechanism in arresting and releasing the carriage.

l)- indicates the vibrating escape-ment-arm, carrying the usual fixed and n'iovahle pawlsf] d', which alternately engage with the escapement-wheel c', and d is the shaft ot' the escapement-arm, which is rocked from' the customary universal bar E by a rock-arm l and a connecting-rod e'.

F indicates the usual line or marginal stop of the Ren'i'ington in arliine,\vhi ch is automatically shifted in front ot' the. usual linger 1)' oi' the escapenient-arm l) when the carriage reaches the end ot' its travel, so as to render the writingkeys ineffective after wrti ing a character in the last letterfspace in a well-known manner. The marginal stop F is carried by theusual sliding scale-bar li", whieh-latteris held in its initial position by the springf and shifted by the carriage-trip f striking' a collarfz, secured to said scale-bar, thereby advancing the marginal stop to a position in `front of the escapement-arm and blocking the forward movement of the latter. Y

Referring to the preferred tabulating mechanism shown in the drawings, indicates the rack or bar mounted on the rear portion of the paper-carriage and carrying the stops or tappets ll, which are adjustably seated in slots or seatsg/ ot' the rack. These tappets coperate with the denomination dogs or detents I in a well-known manner. y

J indicates the transverse slide or carriage,

'pets H.

K. indicates the usual tal)ulating-keys, secured to the front ends of longitudinal rods Each ot these keys actuates the correspond-y ing flog I through an olbowflever L, having its lower arm connected with the rod and a connecting-rod L, pivotcd to the upper arm of said elbow-lever and provided at its upper end with a hook which engages over the tail ol' the dog, as .shown in Fig. l.

M indicates the restoring-bar, by which the dogs are autoinaticallydepressed to theirinoperative position a'tter having been elevated and which is pivoted, by means of arms m, to the g 'frame extension J and held yieldingly against the upper Asides of the noscsof the dogs by a spring m acting upon said arms. In the act of pushing a tahulating-key the restoring-bar elevated clear ot' the dogs by a verticallynected by auniversal rod W5, which extends across the rear sides ot' the lower a.L ns ofthe adjacent elbow-leversL, so that upon pushing a tabulating-key the restoring-bar is elevated through the medium ot' the elbow-levers,

The

connected bell-crank levers n, connecting-rod a', `and lifting-lever a.

o is the latch or supporting-post, by which the restoring-bar M is temporarily supported after having been raised by the liftinglever'n. This latch is'pivoted at its lower end to an ear ot' the top plate in such a manner as to swing laterally or lengthwise of the slide J, as shown in Fig. 2. Then this slide is advanced, the l'atch 0 engages under a lug o', projecting from the adjacent side of the lifting-lever w thereby holdingthis lever and the restoring-bar in their elevated position. l v

p indicates the releasing-hook, which withdraws the latch laterally out of engagement with the lug o of the lifting-lever a when the slide J is advanced, thereby allowing the restoring-bar M to descend under the action of its springtor depressing the .elevated dog. This releasing-hook is secured to the slide J, as seen in Fig. 1, so as to move therewith.

q indicates a tappet or projection carried by the releasing-hook p and arranged in the path ot' the marginal stop F, so as to be struck or tripped by it when the same is shifted in front.

of the finger D of the escapement-arm D at the end ot the travel of the paper-carriage. When this occurs, the releasing-hookp is compelled to move forwardly with said marginal stop, thus moving thev latch o aside and per-l mitting the restoring-bar to descend andretract any projected dog to its inoperative'p sition. By this provision incase a careless operator should push any of 'the tabulatingkeys after the last tabulating-stop H of the paper-carriage has passed beyond the denomination-dogs the releasing-hook p will be -actuated by the marginal stop instead ot' through the medium of the slide J, thereby insuring the restoration of any projecting dog to its inol'ierative position and preventing lthe carriage-stops H from encountering it upon returning the paper-carriage to its startingpo'int. All liability of breakage or injury to the tabulating devices is thus obviated,`and

these devices can under no circumstances in- IIO IIS

vIz'o vascos i Y riage.

thinned as much practicable by chami'ering instead oi'v rearwardly.

, the tappet in the wrong position.

' machine and the particular tabulating mechembodiment of the invention.

erably its rear edge, with a baitiie or ,stop rail It will be understood from the foregoing description that the marginal stop F or equivalent member forms a trip' device which acts upon the projection qf of the hook p and which is controlled by the movement of the papercarriage.

In order vto prevent the denomination-dogs I from being blocked by striking the lower ends of the .carriage-tappets H and displacing the same, said lowerV ends are preferably or beveling them o n their rear sides, as shown in lig'. 4.' Then the tappets are thus constructed, operators are liableto insert them with their 'chamfered sides facing forwardly In order yto compel operators to insert the tappets properly, the tappet-rack Gr is provided at one edge, preffr, whichprojects above the upper side of the rack, and the head oi each tappet i's arranged to project farther beyond one edge oi' its stem than the other, or, .in other words, the stem is offset with reference to the center of the head. By this construction upon properly placing the tappet in its seat the less salient side of its head will clear the baille-rail and permit the tappet to be tuliy inserted, as shown in Fig. 3, while if the tappet be improperly enteredthat is, with its beveled side Jforward-the more salient side of the head will encounter the bathe-rail, as shown by dotted lines in said figure, rendering .it impossible to fully insert For this purpose the extent of projection of the less salient side of the tappet-head must not exceed the distance between the baiile-ragil and the adjacent ends of the slots in the raclnwhile the extent of projection of themore salient side oi' the head must be greater than that distance. As shown in Fig. 5, the baiiie-rail of the stop-rack extends throughout the portion of the rack containing the tappet-slots.

While i prefer to employ the above-described- T-shaped tappet, the same result may be attained withan L-shaped tappet H/.or one in which the head projects only beyond one side of the stem, as shown in Fig. 6.

I'have ,herein shown and described my improvements in connection with the line or marginal stop or' a Remington type-writing anism shown and described in the Letters Patent hereinbefore referred to as the preferred The' same are not, however, intended to be limited in their applicationto thoseparticular mechanisms, but may without departing from the spi-rit of the invention be applied to other tabuiating4 type-writers and attachments oi the same general class.

I claim as my invention- 1, rl `he combination of the paper-carriage havinga tappet-'support, movable denomination dogs or detents adapted to intercept the tappets applied to said support, a restoring devicefor returning said dogs lto their inoperative position, `means for holding said restoring device in its inoperative position, and a releasing device controlled by the papercarriage and arranged to act upon said holding means, substantially as set forth. e

2. The combination of the paper-carriage having a tappet-support, movable denomination dogs or detente adapted to intercept the tappets appliedI to said support, ,a restoring device for returning said dogs to their inoperative position, a latch for holding said restoring device in its inoperative position, and

a releasing device controlled by the papercarriage and arranged to engage said latch,

substantially as set forth. i

3. The combination of the paper-carriage having a tappet-support, movable denomina- 1 tion dogs or detents adapted to intercept the tappets applied to said support, a slide carrying said dogs, a restoring device forreturning the dogs to their inoperative position, a latch for holding said restoring device in its inoperative position, releasing means movable with said slide and arranged to withdraw said latch, and a .trip device controlled by the papercarriage and arranged to engage said releasing means, substantially as set forth.

a. The combination oi' the paper-carriage having a tappet-support, movable denomination dogs or detente adapted to intercept the tappets applied to said support, a slide carrying said dogs, a restoring device for returning the dogs to their inoperative position, a latchfor holding said restoring device in its inoperative position, a releasing-hook engag- .ing with said latch and having an actuatingtappet, and a trip device controlled by the IOO paper-carriage and arranged to engage the tappet of saidV releasing-hook, substantially as set forth.

5. In a tabulating mechanism for type-writ- IIO ing machines, the combination of the paper Y carriage, a rack or support movable with the carriage and provided with tappet-seats and adjacent to said seats with a baiiie device, and a tappet adapted to enter one of said seats and constructed toencounter said baffle device in one position of the tappet and4 to clear the same in another position thereof,l substantially as set forth. e

6. In a tabulating mechanism for type-writing machines, ythe combination ot the papercarriage, a rack or support movable with the carriage and provided with tappet-seats and adjacent to said seats with a baiiie device, and a tappet adapted to ent-'er one of said seats and having an odset head arranged teclear said Y `bfvtic device in one position of the tappet and to encounter the saine ir` another position thereof, suhetftntinlly as set forth.

7. In n tuhulatiug mechanism for type-Writing' n'mchincs, the combination ofthe pape-rcnrriugc, :L mel; or support movable with the cfurizxg'e' und.A having tapperseetg and provided along' one edge with a baffle-rail projecting 'uhove the ruck` and u tappet comprising a stem adapted to enter one/of said seats and an oset head constructed to clear Seid-hamerail in one position ofv the tappet and to encounter the same in a'uother position thereof,` 'Substantially .Ls set forth.

Vitness'myhand this 24th dey ofV Decem- I5 ber, 1902.-

.MANLEY H. BLAKESLEE. Vitnesses:

THEO. L. Pori), EMMA M. GRAHAM.

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