US589635A

US589635A - mary s

Info

Publication number: US589635A
Authority: US
Publication date: 1897-09-07
Anticipated expiration: 1914-09-07

Description

(No Model.)

G. F. BOOS.

Patented Sept. 7,1897.

fig: .7;

IN VEN 7' I? WITNESSES 1 l l' l By Il l, I

r'I f/ ATTUHNEYS.

UNITED STATES nTnNT Ormes@ GEORGE FRICDRICII BOOS, OF ST. MARYS, OHIO, ASSIGNOR TO TIIE ST. MARYS MACHINE COMPANY, OF SAME PLACE.

STOP-MOTION FOR GOVERNORS.

SPECIFICATEON forming part of Letters Patent No. 589,635, dated September 7, 1897.

Application filed November 2l, 1896. Serial No. 612,985. (No model.)

.'Zo @Z5 wwit t indy concern.

e it known that I, GEORGE FREDRIOK Boos, ot St. Mary'ls, in the county of Auglaize and State of Ohio, havel invented a new and Improved Stop-Motion for Governors, of which the following is a full, clear, and exact description.

The invention relates to centrifugalgovernors for engines and other machines; and its object is to provide a new and improved stop-motion which is simple and-durable in construction and arranged to at once shutoff the motive agent from the engine in case the drivin g-belt for the governor slips oft', breaks, or otherwise becomes nnserviceable.

The invention consists principally of a cam mounted to turn and controlled by an arm carrying an idler-pulley for the belt and a spring-pressed lever held in engagement at one side of its fulcrurn with the said cam and having connection with the valve-stem at the other side of the fulcrum. s y

The invention also consists of certain parts and details and combinations of the same, as will be fully described hereinafter and t-hen pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indi cate corresponding parts in both the ligures.

Figure I is a side elevation of the improvement with parts in section, and Fig. 2 is an enlarged transverse section of the same on the line 2 2 of Fig. `I.

The governor on which the improvement is applied is provided with the usual valvestem A, connected with ball-levers B, fulcrumed in the ball-frame C, mounted to turn in the governor-frame and connected by gearwheels D D with a pulley-shaft E, carrying a pulley F, connected. byabelt Gr with a pulley on the driving or other shaft of the engine, so that when the latter is running the belt G rotates the puliey F and shaft lil, and the rotary motion off the latter is transmitted by the gear-whecls D' and D to the frame C in the usual mannerV The belt G is engaged by an idler-pnlleyll, jonrnaled on an arm I, having its hub I mounted to turn loosely on the shaft E, and on the said hub is formed or secured a cam J, preferably made heartshaped, .as indicated in Fig` 2, with an open web, into which extends a friction-roller K, mounted on'the end ot a lever K, fulcrnmed at K2 on the governor-frame. rEhe other end. of the lever K engages collars A' on the valvestem A.

The outer end of the lever IlV is connected with a rod L, engaged by a spring L", held in a casing L2, attached to the governorirame. Nuts L3 on the rod L permit of adjusting the tension of the spring L, which latter serves to press the lever K.

It is evident that as the friction-roller Ii extends in the open web of the cam .I the lever K is free to swing up and down, according to the np-and-down movement of the valve-stem A caused bythe action of theballlevers B; but when the belt G breaks, slips olif, or otherwise becomes unserviceable then the idler-pulley H drops and in doing so causes a downward swinging of the arm I, so that the cam .I is turned and the friction roller K is carried upward by the cam-surfaces, thus imparting a swinging motion to the lever K, with the outerend in an upward direction and the inner end in a downward direction, to shift the valve-stem A downward to seat the valve on its seat, and thereby' shut off the motive agent Yfrom the engine.

It will be seen that by the arrangement described the downward swinging of the arm I is very sudden, and consequently an immediate closing of the valve takes place by the mechanism above described.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- I. The combination with the stem of the shut-olf valve, of a normallyfstationary cam mounted to turn, an idler-pulley normally bearing against the driving-belt, an arm connecting said pulley to said cam, and a springpressed lever held in engagement at one side of its fnlcrum with the said ca1n,and having a connection with the valve-stem at the other side of the fulcruin, substantially as described.

2. A Stopmotion forgovexjuol's, comprising ing' au idler-pulley adapted to engage 11m L Springpressed laver adapted to engug@ the dfvngbelt forth@ governor, subsmntally as valve-stem, a friction-roller carried at the shown :md desevbed.

outer end of the said lever, a heart-shaped GEORGE FREDRIGK BOOS. cam engaged at its inside bythe said frc- Witnesses:

t0n1011e1,and im 5min mounted to swing and J. D. HENDERSON,

carrying the said mm, the said :m11 Support- J. N. COVAULT.