US268135A - seattuok - Google Patents

Description

(o Model.) 2 Sheets-Sheet 2. A. SHATTUGK 8u C. THORN, Jr.

ADDING MACHINE.

No. 268,135. Patented Nov. 28. 1882.

Fig., ,9.

PATENT A OFFICE.

ARTHUR SHATTUCK AND CHARLES THCRN, dlt., 0F SANTA ROSA, UAL.

ADDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 268,135, dated November 28, 18B?.

Application tiled May 27, 1882. (No model.)

.To all whom it may concern:

Beit known that we, ARTHUR SHATTUGK and CHARLES TI-IORN, Jr., of Santa Rosa, county of Sonoma, State of California, have invented an Improved Adding-Machine; and we hereby declare the following to be a full, clear, and exact description thereof.

Our invention relates to an improved device or apparatus for mechanically adding columns of gures; audit consists in certain details of construction, as hereinafter fully described, and specifically pointed out in the claims. The upper ends of these belts or slides each pass over a roller, also having the digits imprinted upon them and arranged on a shaft, so that as a slide or belt is drawn over the table any number of ijgures the roller will also be revolved a corresponding number. Suitable devices are connected with the rollers to cause each roller to the left to be moved to indicate any addition to the columns ot' tens, hundreds, thousands, Snc., and suitable mechanism is connected with the rollers by which they are properly rotated and prevented from turning too far, and by which any or all of the rollers may be returned to 0 at will, as will be more fully explained by reference to the accompanying drawings, in which-- Figure l, Sheet 1, is a perspective view ot our apparatus, Fig. 2, Sheet 2, is a plan with chains omitted. Fig. 3 is a vertical longitudinal section. Figs. 4 and 5 are detailed views of parts of the apparatus. Fig. 6 is a detail showing lever disengaged. Fig. 7 shows the pawl-levers in section and the disengaging-bar in elevation.

A is the table of our apparatus, having at each end a transverse shaft, with a series of rollers, B and C, upon them, over which a series of independent slides, chains, or open belts, D, pass, as shown. Upon the table, beneath each chain, is a row of igures, from 1 to 9, so spaced that each figure occupies the open space of one link ot' the chain. The rollers C at the lower end ofthe table are idlers, around which the chains pass and are kept in the proper place and at the proper tension. The rollers B at the upper end are of such a size as to have digits corresponding with those upon the table, (marked upon spaces from 0 to 9,) so that when the chain is drawn down over the table to the stop D at thelower end from any particular tigure the roller will be turned a corresponding number of tigures. Then any roller passes the 0 point the mechanism will move the roller to the left one place, in the manner usual to this class of machines. Each roller has upon its side a ratchet-wheel, E, which is engaged by a pin, F, on the end of a lever, G. This lever has secured to it one arm ofabell-crank lever, H, having its fulcrum at I. The opposite end ot' this lever H has a curved arm, J, projecting up from it toward the central shaft, so that the pin K upon the next roller to the right willstrike it when the() has arrived at the top, and will move it down, so that through the levers G and H the ratchet E will be moved forward one tooth, and the roller t'o which it is attached will be moved a corresponding distance, or one ligure, upon its face. Around the periphery of the roller are a series of arms, L, which project inward radially toward the center, and as the end of the lever H and the curved arm J are forced down they will engage a pin, a., on the bottom of the arm J, acting as a stop, and thus prevent the roller from moving more than one iigurc at a time. When relieved from the pressure ofthe pin K the hell-crank lever H and the leverarm G are returned to their original position, ready for a new impulse by the spring M. Then it is desired to move any one of the rollers back to 0, it is done by pressing a button or knob, N, at one side. This knob is attached to a bar, l, having inclined notches upon one edge, like the teeth of a saw, as shown, and each of these notches operates upon the corresponding lever, Gr,ot' its roller, so that when the har P is moved it throws the lever G up midway between the ratchetwheel E and the arms L. rlhe arm J will stand in its normal position between the arms L and the center, and thus allow the roller to be turned back to 0, or until the pin ofthe next roller strikes the inside of the curved arm J.

Having thus described our invention, what we claim as new, and desire to secure by Let ters Patent, is

1. In an adding-machine, and in combination with the stationary table A, with the rows of figures and the traveling chains, as shown, the rollers B, having the ratchet-wheels E and radial arms L, the levers G and H, connected by spring M, and the curved arms J and the IOO 2 26ers?,

allow them to be turned freely, substantially as herein described.

In witness Whereot1 we hereunto set our hands.

ARTHUR SHATTUGK. UHAS. THORN, JR. y Witnesses:

JNO. T. CAMPBELL, S. H. NoUnsn.

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