US326441A

US326441A - Steam-governor

Info

Publication number: US326441A
Authority: US
Publication date: 1885-09-15
Anticipated expiration: 1902-09-15

Description

(No Model.)

J. D. MoRAE.

STEAM GOVERNOR.

Patented Sept. 15

W/ VE55E5 UNITED STATES PATENT EErcE.

JOHN 1). MGEAE, or BALDWINSVILLE, NEW YORK.

STEAM-GOVERNOR.

SPECIFICATION "forming part of Letters Patent No. 326,441, dated September 15, 1885.

Application filed December 4, 1884. (No model.)

To all whom it may concern.-

Be it known that I, JOHN D. MORAE, of Baldwinsville, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Steam-Governors, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to that class of steamgovernors in which the movementof the valvestem of the engine is controlled by arms pivoted on arotary wheel to receive the centrifugal force thereof, and carrying toward and from the center of the said wheel the eccentric which transmits motion to the aforesaid valve-stem.

The invention consists of a novel construction and combination of the constituent parts of the governor, rendering the-same more effective and reliable in its operation.

The invention is fully illustrated in the annexed drawings, wherein Figure I is a face view of the governor, and Fig. II is a transverse section of the same.

Similar letters of reference indicate corresponding parts.

- S represents a rotary shaft on which is rigidly secured a wheel, WV.

E represents an eccentric which is provided with a transversely elongated opening, a, through which the shaft S passes. Said eccentric is sustained yieldingly in its position, and carried toward and from the shaft S by means of the following instrumentalitiesz'ln a diametrical line at opposite sides of the shaft S are arranged guides b b, firmly secured to the wheel W. In said guides slide rods r r,which are connected with and extended radially from the eccentric E at points diametrically opposite each other. The outer ends of the rods 1* 1" are provided with screw-threaded portions on which are nuts n n, and between said nuts and the inner bearings, b, are interposed spiral springs s s. Said springs are at such a tension as to normally hold the eccentric in its extreme eccentric position on the shaft S, said tension being adjusted by means of the nuts n n, hereinbefore referred to.

Z Z represent two levers pivoted on the wheel WV at one and the same side of the diametrical line in which the rods 1" 1' move, the free ends of said levers lying at opposite sides of the aforesaid diametrical line. The short arms of the levers are connected with the rods 1- r, and on the free ends of said levers are adj ustably-connected weights 0 c.

In the rotation of the wheel W the levers Z Z receive thecentrifugal force of the wheel W, and the weighted ends of said levers are thereby thrown outward from the center of the wheel, and in said outward movement of the weighted ends of said levers the short arms thereof carry the eccentric E toward concentricity with the shaft S, and thus diminish the movement of the eccentric-rod and valve-stem connected therewith, thereby cutting off steam from the cylinder, and consequently reducing the motion of the piston. The motion of the wheel WV being correspond ingly reduced, diminishes the centrifugal force exerted on the levers Z Z, and thereby allows the springs s s to again throw the cocentric toward its extreme eccentric position on the shaft S. It will thus be observed that by the described simple construction and 00111- bination of mechanisms the movement of the valve of the engine is controlled in a most effective and reliable manner.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. The combination, with the wheel \/V and the eccentric E, the latter provided with the elongated opening a, of the rods 1" 9', connected with and extended radially from the eccentric at points diametrically opposite each other, guides 12 b for said rods, nuts n n on the rods, springss sinterposed between said guides and nuts, and the weighted levers Z Z, connected with the rods r r, substantially as described and shown.

2. The combination, with the shaft S and wheel WV,of the eccentric E, provided with the transversely-elongated opening a, the guides b 1), arranged in a diametrical line at opposite sides of the shaft, the rods r r, sliding in said guides and connected with the eccentric, the nuts n a on said rods, springs s s interposed between the nuts and inner guide, I), and the two levers land Z, pivoted on the wheel at one and the same side of the diametrieal line thereof, and having their free ends lying at opposite sides of said diametrical line, and 5 each having an arm connected with one of the rods 1-, all constructed and combined substantially as described and shown.

In testimony whereofI have hereunto signed my name and affixed my seal, in the presence of two attesting witnesses, at Syracuse, in the 10 county of Onondaga, in the State of New York, this 20th day of November, 1884.

JOHN D. MORAE. [L. s.] Witnesses: r

C. H. DUELL, F. H. GIBBs.