US103869A - Rotary engine - Google Patents

Description

S. D. GILSON. ROTARY ENGINE.

No. 103,869. Patented June 7, 1870.

itubsm UNITED STATES PATENT OFFICE.

ROTARY ENGINE.

Specification forming partof Letters Patent No. 103,869, dated June 7, 1870.

. .lo all whom it may concern:

Be-it known that I, SAMUEL D. GILSON, of Syracuse, Onondaga county, in the State of New York, have invented a new and useful Improvement in Steam Pumping-Engines;

represents a side elevation of the engine. Fig.

2 is a horizontal section of Fig. 1 on the line or a". Fig. 3 is a vertical section of Fig. 2 on the line-3111]. Fi 4 is a detailed view, showing the engine-crank reversed from the position seen in Fig. 1. p

Similar letters of reference indicate correponding parts. Ais the cylinder. B is the engine-shaft. (J is the piston. 1) D are the induction-ports. E is the exhaust-porn F is the valve, which is a'roeking or oscillating valve. G is the steam-pipe connecting with the boiler. H is the exhaust-chamber atlheend of the cylinder. From this it will be seen; that the piston does not make a full revolution in the cylim der, but has a reciprocating motion, the steam being applied alternately on each of its sides. The valve is so arranged that the piston is cushioned by steam on the heads I I at the termination of each vibration. As seen in Fig. 3, the piston is taking steam from the port D and exhausting it from the port D. The exhaust-steam passes into the chamber H on the end of the cylinder and escapes through the pipe J, Fig. 1.

K is a crank on the end of the shaft B. L is cam connected with the crank, by means of which thevalve F is operated. M is an arm on the end of the valve-stem, which works in and is guided by a slot in the stand N. As

.the crank moves back and forth with a motion corresponding with that of the piston the angles of the cam are brought in contact with arm M, raising and lowering it, and consequently oscillating the valve F. The manner in which the cam operates upon thearm is plainly shown in Figs. 1 and 4.

O is a revolving shaft, supported by the engine-frame, which is connected with the engine-shaft B by means of the crank 1 on its end and the connecting-rod R. S is a flywheel on the shaft.- The crank K on the engine-shaft B is carried more than half ofa revo lotion and less than a whole one at each'h'alfstroke of the piston, a whole stroke of thepiston being performed when it returns to the head I, from whence it started. The crank K is carried past thevertical center line at each vibration, audit is'longer or has abroader sweep than the crank I, so that at the termination of each vibration of K the crank P is carried past the central linevof the connecting-rod It and performs a wholercvolutien while the piston performs a single vibration or half-stroke.

- In applying this engine to pumpingpurposes-(or completing a fire-engine) the cylin:

der of the pump is attached to the enginesh-aft B, and the pump itself is constructed and operated upon the same principle as the engine in all respects.

It will be seen that by varying the, position or throw of the valve the steam may be cut off at anypart ofjhe stroke, so that it may be worked expansively to any desired extent.

In applying the engine to other purposesr than pumping in the manner described, the power is taken from the rotating shaft 0.

In using the engine exclusively for pumpin g, the shaft 0 and the parts connected therewith are dispensed with.

Having thus described my invention, I. claim -as new and desire to soon re by Letters Patent- The above specification of myinventicn signed by me this 5th day of J annary,1870.

SAML. D. GILSON. Witnesses DAVID MIsELL, ALEX. F. Ronnnrs.

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