US241862A - Method of communicating motion and power - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

I. HOLDEN. Method of Communicating Motion and Power, 8w.

No. 241,862. Patented May 24,1881

N. PETERS, PMIDLRMIW, Wm D. C.

(No Model.) 2 Sheets-Sheet 2;

- I. HOLDEN.

Method of-Gommunioating Motion and Power, &c. No- 24l,.862- Patented Mav 24.1881.

N. PETERS, HMO-Mm WM [5.3.

UNITED STATES PATENT OFFICE.

ISAAC HOLDEN, OF BRIDGEPORT, CONNECTICUT.

METHOD OF COMMUNICATING MOTION AND POWER, 81.0.

SPECIFICATION forming part of Letters Patent No. 241,862, dated May 24, 1881.

Application filed June 10, 1880.

To all whom it may concern.

Be it known that I, ISAAC HOLDEN, a citizen of the United States, residing in the city of Bridgeport, in the county of Fairfield and State of Connecticut, have invented a new and useful method of communicating motion and power from one revolving shaft to another placed parallel thereto and at any convenient distance therefrom, of which the following is a specification.

The object of my invention is to insure positive isochronism in the rotation of two parallel shafts by means of a system of levers and links which communicate power from one to the other shaft, thus obviating the employment of the usual belts, and chains, and spur and bevel gears.

My invention consists in two parallel shafts and two levers between them having a common fulcrum, the said levers being directly or indirectly connected, as herein shown and (lescribed,with crank-pins or eccentrics of the said shafts.

Figure 1, in front elevation, represents one practical embodiment of my invention; Figs. 2, 3, and 4, like views of modifications thereof; and Figs. 5, 6, and 7 are front and side elevations of yet another modification of my invention.

The driving-shaft is designated by the letter S, and theparallel shaft to be driven synchronously with and from the said driving-shaft is designated by the letter S. The disk, or it might be a crank, W, having the crank-pin c, is secured to the driving-shaft S. The disk, or it may be a crank, W, having the crank-pin c, is connected with the driven shaft S. The two levers L L have a common fulcrum, P, located between the two shafts S S.

In Figs. 1, 2, and 4, the ends of levers L L are, by links Z l, joined with the crank-pins c and c of theshafts' S S. In Fig. 1 I have shown the arms of the levers and the links of equal length; but in Fig. 2 the arms are shorter than the links, while in Fig. 4 the arms of the levers are shown of different length.

In the modification, Fig. 3, I employ but one of each pair of links Z l, and instead of the links omitted I shape the ends of the lever L to extend through or connect with a suitable guide-block placed loosely on the said crankpins and so as to turn thereon.

(No model.)

In most instances of my invention I prefer to employ a crank and crank-pin, as described, with the driving-shaft S; but as an equivalent for the crank and crank-pin it is obvious that 1 may employ a single eccentric, E, made broad enough to receive side by side the enlarged eyes or ends of the links 1 l, as in Figs. 5, 6, 7. The links l are jointed with the levers L L by pins p, while the links Z are jointed with the opposite ends of the said levers by pins 1).

The parts having been connected and'arranged as shown, rotation of shaft S will in]- part precisely the same motion to shaft S, each or both shafts rotating the same distance in like intervals of time, both shafts turning exactly in unison or isochrononsly.

Other forms, arrangements, and proportions of my invention may be devised to suit it to particular situations and purposes, all involving the same general idea. The pin P need not be equidistant from the centers ofthe shalts S S, nor need it be in the straight line joining those centers; but wherever the pin P be placed, the crank and each part of the connection on the side of S should bear the same ratio to the homologous part on the side of S, as the distance or P from the center of S bears to the distance of P from the center of S. When P is placed out of the line of the centers of S and S, the construction may be made with bent lovers.

1 do not claim two links connected at opposite ends with cranks and eccentrics of two parallel shafts, nor do I claim a single slotted lever connected at opposite ends with the crankpins of two parallel shafts, the said lever sliding as well as vibrating on its fulcrum.

I claiin- The two parallel shafts and crank-pins, or equivalents carried by them, and the two levers mounted upon a common fulcrum, combined.

with links, substantially as described, to join the said levers and crank-pins, or equivalents, to operate substantially as and for the purpose set forth.

ISAAO HOLDEN.

Witnesses:

GEO. H. DIMOND, A. STEWARD.

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