US309865A - Eydbaulio gate and valve - Google Patents

Description

(No Model.)

J. MOORE.

HYDRAULIC GATE AND VALVE.

No.309,865.. Patented Deo. 30,1884.-

WITNEE E INVENTU N. PETE S. Plmlo-umo n hur. Washin ton. D. Q

Hearse STATES A'IENT Fries,

JOSEPH MOORE, OF SAN FRANCISCO, CALIFORNIA.

HYDRAULIC GATE AND VALVE.

$PECIFICATION forming part of Letters Patent No. 309,865, dated December 30, 1684.

Application filed February 18, 1884.

T0 at whom it may concern.-

Be it known that I, JOSEPH MOORE, a citizen of the United States, and aresident of San Francisco, State of California, have invented a new and Improved Mode of Operating Hydraulic Valves and Gates, of which the following is a specification.

My invention relates to those larger and heavier gates and valves which require the ap plication of more than manual effort to raise and lower themexpeditiously; and it consists in the application to or combination with such valves or gates of a hydraulic cylinder having a piston operating therein, the rod of which is connected with the stem of the gate or valve to be operated, and which piston is controlled as to the exact distance or direction of its move ment by a peculiar system of valve-gearing connected therewith, as will be hereinafter more fully described.

In the accompanying drawings, forming part of this specification, Figure lis asectionalelevation of myinvention in its application to an ordinary water-wheel. Fig. 2 is a front view of the hydraulic cylinder andits valve-operating levers. Fig. 3 is a diagrammatic view ofthe valvegear of the hydraulic motor shown at a larger scale.

A is a portion of a common water-wheel, which maybe either an undershot, overshot, breast, turbine, or other kind. B is the gate connected therewith,which regulates the quantity of water to be admitted to the wheel.

C is the conduit from the gate to the wheel, with shelves passing longitudinally to guide the water into the different buckets of the wheel.

The gate in the present instance is shown to be one of the ordinary sliding-plate kind; but any suitable kind may be used. The stem D, which is also the piston-rod of the hydraulic cylinder, passesthrough the stuffing-boxof the gate at E and stuffing-box of the hydraulic cylinder at F F. To the end of the piston-rod, which passes through the stuffingbox F, a lever,(of the first order,) G, is connected. This lever has its fulcrum on one end of the link H, and its extremity connects with another link, I, connecting between the lever G and thevalvestem J,which moves the valve K. The operating-lever L is one of the first order, and has (No model.)

its fulcrum upon alug or standard, M, its end connecting to the link H. The valve Kis an ordinary O slide-valve, which alternately opens and closes a passage from the supply-pipe N and exhaust-pipe O to supply and discharge water, under pressure, to and from one or other end of the hydraulic cylinder in similar manner as steam is admitted and discharged from the cylinder in operating a steam-engine.

P is a quadrant to guide and steady the le ver L as it is moved back and forth. The cylinder of the motor is secured to any convenient part of the timber frame-work of the water-wheel in true alignment with the gate B. In some cases a suitable cast-iron frame may be used to attach the gate andthe motor together. There is often occasion to open the gate a precise and determined degreeless than the full opening. If the valve controlling the admission of the water to the hydraulic motor is operated by hand entirely, great uncertainty attends the measurement of the precise degree of opening desired. In fact, it resolves itself largely into a matter of guess-work; but with the present arrangement the hand-lever has only to be set at such a degree of angularity with the horizontal as may correspond with the degree of opening of the gate required, and

which is properly measured and marked on the quadrant when the device is made, to obtain the utmost precision of action.

In operating the device, let us suppose that the gate is closed, and that it is required it shall be moved to half its full opening. In this case the levers G and L will be found standing at rest on the oblique lines marked a a a a, Fig. 3. First, the leverL is thrown to oecupy a true horizontal position, (the cylinder being supposed to stand vertically,) which is just one-half its sweep. Here it rests,when it will be found that the lever G has assumed a still more oblique position, being pushed over through its connection with the lower end of the lever L, while its fulcrum on the pistonrod D has not yetmoved. This movementhas thrown the valve so as to give a full opening to the lower port. N ow, a movement of the piston-rod commences as the cylinder fills with water, and,of course, as the fulcrum of the lever G is now changed from its long end to about the middle,where it connects with the link H,

the movement of the piston-rod will vibrate this lever, the end attached to the piston-rod going up, and the other end connected to the valve through the link I vibrating downward, thus closing the port which has just been suddenly opened. Since theparts are so proportioned, a half-stroke of the piston effects a hal f stroke through the connections of the valve K. Therefore, inasmuch as the valve was only moved from its middle position in one direction, it follows that a half-stroke in the opposite direction must restore it to said position, which is the one which causes both ports to be covered, shutting ofiboth supply and exhaust, and maintaining the motor immovable, so that when this position is reached the motor has moved the gate 13 just one-l1alf its travel. If, now, it be required to open the gate full, the lever L is thrown the remainder of its sweep, the valve K, similarly as before, is again moved half its stroke to open the lower port, and afurther advance oft-he piston occurs, which, in like manner as before, restores the valve K to its normal position and again shuts off both supply and exhaust. Now, if the gate is to be entirely closed, the lever L is swung to the opposite end of its path,which movement would communicate a full stroke to the "alve K, if it were done quickly; but inasmuch as it is done a novelty, having been used in connection with steam machinery in various forms and combinations; but I do not know of there being any motors of the kind herein shown used in connection with the valves and gates of hydraulic machinery before my invention thereof.

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

The combination of a hydraulic motor having a handoperated differential valve-gear, as herein described, and a hydraulic valve or gate connected therewith, substantially as and for the purpose set forth.

JOSEPH MOORE.

\Vitnesses:

Gno. PARDY, WM. 1?. DRUM.

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