US631345A - Adding-machine. - Google Patents

Description

Patented Aug. 22, I899.

J. A. TURCK.

ADDING MACHINE.

(Application filed June 21, 1899.)

(No Model.)

Inventor. Joly; 4,57%

@wwfiw Attorneys Witnesses.

m: NORRIS PETERS co. PHOYO-LITHO. WASH'NGTG'N, a, c.

Patented Aug. 22, I899.

J. A. TURCK.

ADDING MACHINE.

(Application filed June 21, 1899.)

2 Sheets-Sheet 2.

(No Model.)

Inventor. 7022/27; Tum/k Witnesses. d/&

Attorneys UNITED STATES PATENT OFFIC JOSEPH A. TURCK, OF PROVIDENCE, RI-IODE ISLAND, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO THE MECHANICAL ACCOUNTANT COM- PANY, OF SACO, MAINE.

ADDINGFMACHINE- SPECIFICATION forming part of Letters Patent No. 681,345, dated August 22,- 1899.

Application filed June 21,1899. Serial No. 721,815. (No model.)

To all whom it may (to/warn:

Be it known that I, JOSEPH A. Tosca, of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Adding-Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to adding-machines and registers.

It is fully explained and illustrated in this specification and the accompanyingdrawings.

Figure l is an elevation of the machine with one side of the case removed. Fig. 2 is a perspective view of the parts of the machine to which the improvements are applied separate. Fig. 3 is a top view of the improvements. Figs. 4 and 5 show detail views of same parts that will be hereinafter fully described.

This invention consists in improvements in my Letters Patent of the United States hearing date the 28th day of March, 1899, No. (322,091, all other parts of the machine, excepting the improvements, being constructed and operated as described in the specification of said patent.

The objects of these improvements are to facilitate the locking and the releasing of the levers that indicate which dials are to be 0perated by the levers that turn them according to the figures on the levers, and also to provide retaining devices to hold the dials, so that they shall not he accidentally turned when the levers are not operating them, and to release them to turn when required.

In the drawings, N N are a series of dials with figures from 0 to 9 on their faces, as described in said patent. They are held on stationary studs 0 and c c are the parts of clutches sliding on said stud and carrying gears c e, that engage with the series of connecting-gears F, by which the dials N are rorated. 0 c are the other parts of the clutches, made fast on the sleeves of the dials N. (See Fig. 2.) The sleeves of the dials also carry each a ten-toothed wheel 0 and a onetoothed wheel 0', by means of which they more each other. In said patent each individual dial is free to turn when the machine is not in opera; tion and is liable to be turned independently of the key-levers a a and cause errors in the calculations. To prevent this, a forked lever j is held to swing on astudj fast in a bar j, under each dial-stud a (see Fig. 2) and arranged to bring the toothed wheels 0 between the arms of the forked lever j, as in Fig. 4. One end 5 of each fork is made to catch one of the toothed wheels 0 by a spring 12 at the lower end of the forked lever and hold that wheel and dial from turning at any time, eX- cept when the tooth of the wheel -0 on the next stud comes around to turn it, when a cam r on the wheel 0' strikes the other arm .9 of the fork and pushes'the lever)" over, so that the wheel 0 and its dial will be free to be moved by the tooth one space. Then the cam '1" having passed by the fork will be thrown back again against the wheel 0 by the spring '0 and hold it fast until the wheel 0 has made another revolution.

In this machine, as described in said patent, there are two sets of key-levers. The first or upper set a a", (see Fig. 1,) are indicating levers-that is, they do not turn the dials, but simply throw each dial that is to be operated by the second or lower set of key-levers a a into connection with the turning mechanism by sliding the half-clutch 0 into engagement with the half-clutch c on the dialsleeve. 'When a dial N is thrown into engagement with the mechanism by which the lower set of key-levers turn it, it is necessary that its wheel 0 should be free from the arm of the forked leverj. This is done by a bent arm .2, (see Fig. 5,) that projects out from the key-lever a that puts the dial in engagement, and this arm .2, when that lever puts the dial into engagement, pushes by its bent portion the forked lever over to one side, so as to leave the wheel 0 free to turn, (see Fig. 5,) which is a s'ection taken on line 5 5 in Fig. 2, looking downward. When an indicating keylever is pressed down to cause a dial to be engaged by the turning mechanism, it is neces sary to hold it down while the lower key-levers operate the dial. This is accomplished in my patent, supra, by having a hook projection g (see Fig. 2) made on the back of the keylever to catch over a bar g and keep it down until another upper lever is pressed down to release it. This way does not release the locked lever quick enough or with sufiicient certainty. To do this, a swinging dog .2 is pivoted to the key-levers a a (see Fig. 2) in position to have a notch 2 in its back edge swing over the bar g when the key-lever is not caught on the bar and to hang down in front of the bar 9 when the key-lever is caught. (See Fig. 2, in which the key-lever a is free and the key-lever a is depressed and caught on the bar g.) It will be seen that upon a slight downward motion of the free lever a the notch 2 will depress the barg and release the lever a before the lever a is caught on the bar. This makes it certain that no two of the indicating-levers will be down at the same time.

Having thus described my improvements, I claim as my invention and desire to secure by Letters Patent 1. In an adding-machine the combination with one or more dials and mechanism to operate them, of a forked lever with each dial to hold it stationary with one of its arms, a

cam moving with the next dial to press oh the other arm of said forked lover and release the dial held stationary, substantially as described.

2. In an adding-machine the combination of a series of dials, a stop-leverin connection with each dial to hold the latter from turning, a key-lever to put said dial in engage ment with the operating mechanism, and an arm attached to said key-lever arranged to free the dial from said stop-lever in making said engagement, substantially as described.

3. In an adding-machine a series of dials, a key-lever in combination with each dial to put the dial in engagement with the operating mechanism, a notch made in said key-lever, a bar for said notch to catch on and hold the lever down when depressed, a dog pivoted to the key-lever and arranged to catch on said bar and depress it when the key-lever is depressed, and release the key-lever that is caught on it, substantially as described.

In testimony whereof I have hereunto set my hand this 10th day of June, A. D. 1899.

JOSEPH A. TURGK. In presence of- BENJ. ARNOLD, HOWARD E. BARLOXV.

Images