US322956A - Governor for steam-engines - Google Patents

Description

(No Model.)

J. MOORE.

GOVERNOR POR STEAM ENGINES. No. 322,956. atented July 28, 1885.

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JOSEPH MOORE, OF SAL FRANCISCO, CALIFORNIA.

GOVERNOR FOR STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 322,956, dated July 28, 1885.

Application filed August 27, 1884. (No model.) I

To all whom, it may concern.-

Be it known that I, JosEPH MOORE, of San Francisco, State of California, have invented a new and Improved Governor for Steam-Engines, WVater \Nheels, Hydraulic, Air, and other Engines to which it may be found applicable, of which the following is a specification.

My invention relates generally to such speed and power regulators of engines as operate through the medium of a centrifugal ball or equivalent species of automatic governor, whether such regulators be applied to steam or other kind of engine.

It consists in applying a peculiar form of hydraulic engine in connection with the ballgovernor, which engine is so proportioned and supplied with a motive power as to have any desired force to move the valve or gate or cutoff device to which it is connected, to the end of controlling the supply of the motive power to engine it is intended to regulate, leaving the ball-governor to do nothing more than control the valve motion of this hydraulic engine, which in itself requires only a light and delicately-operating form of governor.

The object of the invention is to dispense with heavy and cumbersome governors, which would be necessary to give force enough to regulate large engines, and also to make such regulators more delicately sensitive to variations and changes of speed.

In the accompanying drawings, Figure 1 is a sectional elevation of all the parts constituting my invention, showing them related to acut-offdeviceofasteam-engine. Fig.2isaplan.

In both figures like letters of reference refer to like parts.

In Fig. 1, A is a shaft rotated by a belt and pulleys by the engine or other machine whose speed and action is to be regulated. Upon this shaft is the usual bevel or miter gear, B, engaging with its companion gear, O, on the upright driving-spindle D of the ball-governor. This spindle rotates, but does not move vertically, and is not affected by the spreading of the governor-balls. At (1 there arelugs, from which the arms E of the balls F are hung. At the center of the balls F the forked connectinglinks G are pivoted, the other ends of which are secured to the cross-bar H, which passes through a slot formed for it in the spindle D.

This cross-bar supports the spindle I, and when the governor-balls spread apart or close together, as the speed of the engine varies, the cross-bar moves up or down, and carries the spindle I with it. The spindle I extends upward to connect with the short end of the differential lever J in any suitable manner. I show in the drawings that theleverJ is forked at this end, the forked ends spanninga collar, K, which has an oval or slot-ted hole therethrough, and pins pass through the forked end and into the sides of the collar, so thatthe collar may remain level as the lever swings up and down. The spindle I passes through this collar, and is secured by the screw-nuts L L above and below. The opposite end of the lever J connects with the piston-rod M by a forked end spanning a boss on end of the rod and a pin, m, passing through both.

At near one end the lever J connects,through the medium of the links N, to the stem of the double piston-valve O, which valve moves up and down in the cylinder P to open and close the passages intothe pipes Q Q. These pipes lead to the main cylinder R, in which the piston M moves up and down.

From the pin m, which connects the leverJ to the piston-rod, there depends on each side links S, the lower ends of which connect with the double-armed levers T, which vibrates the shaft U. This shaft U may be the stem of a steam throttle-valve, the intermediate connection to a hydraulic valve; or it may, as shown in the drawings, be the means of conveying motion to any suitable cutoff device of a steamengine.

The invention does not extend to the cut-off device, therefore I need not describe its construction further than shown in the drawings, where it is marked V.

There is a pipe,W,which conveys water under pressure (obtained by having the supplytank on the high roof of a building, or it may in cities and towns be obtained from the streetmains) into the middle of the cylinder P, and another pipe, IV, conveys it away when exhausted. The valve O is hollow, so that the exhaust from the upper port may pass down through it, there being a couple of holes shown in the hollow part of the stem just above the top valve. Above these holes the valve is made solid.

There are the usual stuffing-boxes supplied, as shown, for both the upper and lower part of the piston-rod M and upper end of valve-rod 0, where these pass out-0f their respective s cylinders.

X is a counterbalance-weight, which, being hollow, may be partly filled with a liquid, so as to get a perfect adjustment in the service of balancing the weight of the piston and long vo end of lever J.

There may be ahole at upper part of the hollow counter-weight to fill it by, and another at the bottom plugged up to draw off by, in adjusting the exact quantity that is necessary to balance the parts.

The frame-work of the device is marked Y. Its construction can easily be understood from the drawings without further description.

The operation is simple,and as follows: The

:0 ball-governor by the variations of the speed of the engine moves the spindle I up and down, which communicates motion to the piston-valve O, to the eflect of admitting pressure to, above, or below the piston M, which in risz 5 ing and falling communicates motion through intermediate mechanism to the cut-off gear or other device to which it is applied to finally control the supply of motive power to the engine, thus regulating its speed;

As the differential lever by its action moves 0 the valve up or down its fulcrum is changed at the other end by the rise or fall of the piston to which it is connected, thus causing the valve to be returned to its normal position. The valve is thus made very delicate in its operation and extremely sensitive to the slightest variation of motion.

What I claim as my invention, and desire to secure by Letters Patent is as follows:

The combination,with a suitable centrifugal governor, of the hydraulic cylinder R, having inlet and outlet passages, as shown, piston M, and rod M, valve 0, movingin suitable chamber to control the action of said piston and rod, and the differential valve-mover consisting of 5 the valve J, connected, first, at one end with the end of piston-rod M, second, at the other end with the governor-spindle I, and intermediately with the stem of the valve 0, arranged and operating substantially as and for 50 the purpose herein described.

JOSEPH MOORE.

Witnesses:

GEO. PARDY, FREDERICK T. NEWBERY.

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