US274625A - Governor - Google Patents

Description

(No Model.

W. B. MASON.

GOVERNOR. I N0. 274,625. Patented Mar. 27, 1883.

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PATENT WILLIAM B. MASON, OF BOSTON, ASSIGNOR F ONE-HALF TO WILLIAM A. PERRY, OF BROOKLINE, MASSACHUSETTS.

GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 274,625, dated March 27, 1883.

Application filed January 11, 1883. (No model.)

To all whom it may concern;

Be it known that I, WILLIAM B. MASON, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Governors, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention relates to a governor for a reciprocating engine, it being especially adapted for use in connection with direct-actin g steampumps, and having for its object to produce a regulator that will control the operation of a reciprocating engine throughout each entire stroke.

The regulator consists, mainly, of a small reciprocating regulating-pump connected with and actuated by some reciprocating part of the pump or engine to be regulated, so that each stroke of the said regulating-pump is in unison with the strokes ofthe main engine. The regulatingpump operates to force a liquid into a chamber provided with an outlet for the escape of the liquid, which acts upon a piston or diaphragm connected with the throttle-valve of the engine to be controlled. By this arrangement, when the liquid is forced into the chamber more rapidly than it is intended to be by the normal operation'of the engine, the

escape-passage being uniform, the liquid will enter the chamber faster than it escapes, and will consequently act on the diaphragm or piston, movin git in such manner as to close the throttle-valveot the main engine, and thus reduee its speed. The size of the outlet-passage from the regulating-chamber is controlled by an adjusting device, so as to regulate with great nicety the speed at which the engine can be driven. As herein shown, two single-act-v reservoir a, and outlet-valves t, opening out- The working parts of the regulating device are mainly contained within or mounted upon a reservoir, a, containing theliquid to be forced by the regulating-pump, and provided at its upper end with a chamber, 1), containingadiaphragm, c, and a follower, d, resting on the said diaphragm and actuated thereby, The follower d is provided with a rod or stem, 12, passing out through the chamber 1), and act-- ing upon onearm, 2, of athree-armed lever,f, the arm 4. of which is connected with a rod, h, passing into a cylinder, 1', and connected with a piston, k, acted upon by a spring, m, tending to force it upward, and thus through the lever f to keep the follower dpressed down upon the diaphragm 0 toward the bottom of the chamber 1). The piston 7c is provided with a small opening, 5', or has a loose fit in the cylinder i, which is filled with a liquid, to prevent sudden or irregular movement of the said piston and connected parts. Thearin 30f the lever f is connected by a link, it, with the throttle-valve of the engine in such a manner that the movement of the lever f caused by the upward movement of the follower (1 will 7 close the throttle-valve, while the movement of the lever caused by the upward movement of the link h, actuated by the spring m, will open the throttle-valve. The reservoir a is partially filled with some liquid, preferably oil or glyeerine, and it also inoloses in this instance two single-acting pumpeylinders, o o, the pl lingers p p of which are provided with racks 19 engaging opposite sides of a gear, 0, mounted on a shaft, r, extending outthrough the side of the reservoir to, and provided with a crank, 1' connected by a link, W, with some reciprocating part of the engine, as shown in Fig. 2, so that one of the plungers p 19 will make its upward stroke and one will make its downward stroke in unison with the stroke of the engine. The cylinders o o are provided with inlet-valves 8, opening inward from the ward into a chamber, u, connected by a pipe, u, with the interior of the chamber 1) below the diaphragm c. The said chamber b is provided with an outlet-passage, to, controlled by a valve, w, permitting the liquid to escape from the chamber bwith aregulated speed and we return into the reservoir a, from which it is pumped.

It will be seen that an increase in speed of the reciprocating parts of the engine, such as might be produced by a sudden removal of its load, will cause the pumps 12 1a to receive a corresponding acceleration, thus forcing the liquid with greater than usual speed into the chamberb and faster than it can escape through the passage w, so thatthe follower dis raised, closing the throttle-valve of the engine and reducing its speed.

Itwill be seen that by wholly closing the passage w the liquid will have no escape from the chamber, and the follower cl will be raised upward to its fullest extent, entirely closing the throttle-valve of the engine and stopping its movement, and by increasing or reducing the size of the passage to the speed of the engine can be regulated as desired.

I am aware that a governor has previously been made in which a liquid forced by a rotary pump, or series of reciprocatory pumps actuated by the engine to be regulated, controls the admission of steam to the said engine; but in such apparatus the operation of reservoir, and means whereby the throttlevalve of the engine is controlled by the liquid forced into the said chamber, thus regulating the engine during every portion of every stroke, substantially as described.

2. The reservoir, reciprocatingpump therein, and chamber to receive the liquid pumped thereby, provided with an outlet-passage and regulating valve therefor, combined with means for actuating the piston. or plunger of the said pump in exact unison with the piston of the engine tobe regulated throughout each stroke, and mechanism actuated by the liquid enteringvthe chamber for controlling the admission of steam to the said engine, substantially as described. I r v 3. The reservoir and reciprocating pump therein, and the chamber and diaphragm and follower therein, combined with the lever actuated by the-said follower, and the regulatingchamber and spring therein, to operate substantially as described.

at. The reservoir ,and pair of single-acting pumps therein, combined with the actuatinggear for the said pumps, connected with a re ciprocatin g part of the engine to be regulated, and the chamber to receive the liquid pumped therefrom and return it to the reservoir, each ofthe said pumps'makingits forward or forcing stroke in unison with the stroke of the piston to be regulated, substantially as and for the purpose described.

In testimony whereof I have signed my name to this specification in the presence of two subscribin g witnesses.

WM. B. MASON.

Witnesses:

J 0s. 1. LIVERMORE, FRED. H. POWELL.

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