US2557585A - Carry over mechanism for - Google Patents

Description

June 1951 w. WOCKENFUSS CARRY OVER MECHANISM FOR TABULATORS Ongmal Flled March 4 1948 INVENTOR- Mllzazn ma P/AV Patented June 19, 1951 CARRY OVER MECHANISM FOR- TABULATORS William Wockenfuss, Union, N. J., assignor to Control Instrument Company, Inc., Brooklyn, N. Y., a corporation of New York Original application Mar 1949, Serial No. 104,986

3 Claims. 1

This invention relates to improvements in tabulators and has particular reference to a carry over mechanism therefor, the present application being a division of my co-pending application Serial No. 13,017, filed March 4, 1948.

An object of the invention is to provide an improved carry over mechanism of simple and practical construction wherein a movable slide member controlled by the accumulator of one type bar is operable thereby to release the accumulator rack of the type bar of higher order so that said rack will carry one into its accumulator wheel,

The above and other objects will appear more clearly from the following detailed description when taken in connection with the accompanying drawing; but it is to be expressly understood that said drawing is used merely for the purpose of facilitating the description of the invention as a whole and not to define the limits thereof, reference being had to the appended claims for this purpose.

In the drawing:

' Fig. 1 is a fragmentary isometric view, partly in section, of a carry over mechanism constructed in accordance with the invention; and

Fig. 2 is a fragmentary elevation of a type bar and its accumulator rack, the latter being shown in carry over position.

In Fig. 1, two of a plurality of type bars I41 are fragmentarily shown as detachably connected at 324 to the lower sections 325 thereof which, in their lowered positions, rest upon and depress the spring urged plungers 326 mounted in a stationary member 321 so that said plungers will impart an initial impetus to the type bars at the beginning of their upward movement toward printing position. The lower end of the section 325 of each type bar is engaged by one end of an operating arm 328 which is controlled, in the manner described in the above identified parent application, to raise and lower the type bars.

The carry over unit embodying the features of the present invention comprises a stationary frame 442 mounted on the back of the tabulating machine in proximity to and across the bank of accumulators I 52 which include the alternatively operable subtract and add wheels 343 and 344. In said frame are'mounted the carry over slides 443, only one of which is shown for purposes of clarity, and each of which is yieldably urged inwardly by a spring 444 with each slide having its inner end disposed between the accumulator rack 366 of the illustrated accumulator E92 and the adjacent type bar (not shown) of the next higher order so as to be controlled by its asso ch 4, 1948, Serial No. Divided and this application July 15,

ciated accumulator and, in turn, control the accumulator rack of said adjacent type bar. This control involves either the arresting of said highor order rack in its zero position (Fig. 1) just prior to the time its type bar reaches the extent of its downward movement, as when no carry over is to be effected, or the continued movement of said rack with its type bar (Fig. 2) in the event said rack is to carry one into the accumulator wheel of the higher order. Said control is accomplished by a laterally extending stop lug- 445 struck from the slide 443 and which is either disposed in the path of the shoulder 44!? on the higher order accumulator rack to arrest the same at zero position, or which is removed from said path upon the operation of the slide 443 when a carry over operation is to be accomplished.

Said slide 443 is operated either by a high tooth on the subtracting wheel 343 of the accumulator I92 engaging the projection 44! at the inner end of the slide, or by a high tooth on the adding wheel 344 contacting the projection 448 of said slide. In either event, the slide is forced outwardly against the tension of its spring 444 and when this occurs a normally tensioned leaf spring 449 carried on a vertically movable frame 450 engages the extremity of the projection 45I on said slide to retain the same in its operated position. When the slide is thus adjusted, its lug 445 will be out of the path of the shoulder 446 of the descending accumulator rack carried by the type bar of the next higher order and said rack will therefore travel with said bar to the extent of downward movement of the latter and thus accomplish the carry over into the accumulator wheel engaged with said higher order rack, whereupon the accumulator I92 is retract ed, as described in said pending application preparatory to the next upward movement of the type bar. Before the type bar again starts its upward movement in the next cycle of operation, a cam 452 on the shaft operates a follower 453 mounted on the shaft M2 and connected to a link 454 which is joined to the rock shaft 455 by a crank 456. Said shaft 455 is connected by the cranks 451 to links 458 (only one of said connections being shown) pivoted to the lower end of the vertically movable frame 450, and through the foregoing connections said cam elevates the frame. When this occurs, a common restoring plate 459 for the accumulator racks of the carry over unit and mounted on the frame 450, moves upwardly to engage the shoulders 460 of any of the accumulator racks 366 which have been moved downwardly to carry over position. Said engagement raises said racks from the position of Fig. 2 to their zero positions shown in Fig. 1. At the same time, the springs 449 of the operated slides 443 are carried upwardly with the frame 450 and are thus disengaged from the extremities of the projections 45!, allowing the spring 444 to restore said slides inwardly so that their lugs 545 will again be positioned beneath the shoulders 446 of the racks to thus retain them in zero position in which they must be in the event that a total-taking cycle is initiated and the accumulator wheels are thrown into mesh with their racks before the type bars start upwardly. As soon as the slides 453 have been restored, the cam 452 permits the frame 450 to move downwardly under the influence of the springs 56i connected to the cranks 451.

Means are provided for splitting the. accumu- V lators and thereby disabling the carry over mechanisms at any desired point or points. For this purpose, the stationary frame 442 has mounted thereon an interposer 562 for each accumulator rack. Each interposer is manually slidable from its normally inoperative position shown in Fig. 1 to an inward operative position wherein it is frictionally held by a spring 462a with its inner end disposed in the path of the shoulder 463 on the associated accumulator rack so as to arrest the downward movement of said rack at its zero position and thus prevent it from accomplishing a carry over operation into the accumulator of the next higher order.

What is claimed is:

1. In a tabulator, the combination with a plurality of type bars each having a relatively movable accumulator rack, and an accumulator element associated with each type bar and provided with a wheel having a high tooth; of a carry over mechanism comprising a stationary frame extending laterally to one side of and adjacent said type bars, a slide member for each accumulator rack having anormal position relative thereto and mounted in the said frame for sliding movement from its normal position transverse to said rack with one end of said member having a projection adapted for contact by the high tooth of an associated accumulator wheel to move said slide member, the latter further having a second projection struck laterally therefrom for positioning in the path of an accumulator rack of the type bar of the next higher order and movable wth said slide member out of said path when said member is moved by said high tooth, and said slide member further having 'a latching projection formed thereon, a second frame movable relative to said stationary frame, and a spring latching element carried by said movable frame and biased by engagement with said latching projection when said slide is in normal position and also engageable with said projection, after said member has been moved, to latch the same against its return to normal until said movable frame is moved.

2. In a tabulator, the combination of a plurality of type bars each having a relatively movable accumulator rack, and an accumulator element associated with each type bar and provided with a wheel having a vhigh tooth; of a carry over device comprising a single plate associated with each type bar and its accumulator rack and slidably mounted for movement transverse to that of said rack from a normal arresting position to an operated position relative thereto, said plate having one end disposed contiguous to the teeth of said rack in the normal position of said plate and being formed integrally at said end with a projection engaged by the high tooth of the associated accumulator wheel for sliding said plate to its operated position, said plate also having a lug struck laterally therefrom in arresting position relative to the accumulator rack of the type bar of the next higher order only when said plate is in its normal position, and means to releasably retain said platein' its operated position.

3. In a tabulator, the combination of a plurality of type bars each having a relatively movable accumulator rack, and-an accumulator element associated with each type bar and provided with a wheel having a high tooth; of a carry over device comprising a single plate associated with each type bar and its accumulator rack and slidably mounted for movement transverse to that of said rack from a normal arresting position to an operated position relative thereto, said plate having one end disposed contiguous to the teeth of said rack in the normal position of said plate and being formed integrally at said end with a projection engaged by the high tooth of the associated accumulator wheel for sliding said plate to its operated position, said plate also having 3, lug struck laterally therefrom in arresting position relative to the accumulator rack of the type bar of the next higher order only when said plate is in its normal position, said plate further being formed with a second projection, and a leaf spring mounted independently of said plate and engageable with said second projection when said plate is moved to operated position to releasably retain same in said position.

WILLIAM WOCKENFUSS.

(,0 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 55 Number Name Date 996,260 Kilpatrick June 27, 1911 1,016,278 Kilpatrick Feb. 6, 1912 1,039,783 Muzzy Oct. 1, 1912 1,94%,675 Fauschek Jan. 23, 1934 so 2,091,758 Hogfors Aug. 31, 1937 2,128,403 Dahlberg Aug. 30, 1938 2,178,272 Vigborg Oct. 31, 1938 2,307,105 Brand June 5, 1943

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