US590558A - Frank jewett - Google Patents

Description

1?.v JBWETT;

' BALL-000K;

' (No Model.)

Patented Sept. 21,1897.

In: NORRIS Pains on, Pnorau'mm. wnsummov UNITED STATES PATENT Orr cc.

FRANK JEYVETT, OF HARTFORD, CONNECTICUT, ASSIGNOR TO OWEN ll. JONES, OF SAME PLACE.

BALL- SPECIFICATION forming part of Letters Patent No. 590,558, dated September 21, 1897. Applicati n filed February 26, 1897. Serial No. 625,132. (No model.)

To to whom, it may concern:

Be it known that I, FRANK JEWETT, a citizen of the United States, and a resident of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Ball-Cocks, of which the following is a full, clear, and exact description, whereby any one skilled in the art can make and use the same.

My invention relates -more particularly to the .class of valves used in connection with supply-tanks in the plumbing of buildings; and the object of my invention is to provide a cock or faucet that may be used under high pressure of water fiowin g through the supplypipe, one which will readily close without watenhamm er, and one in which there is but slight wear on the valve-seat.

To this end my invention consists in the details of the several parts making up the cock as a whole and in the combination of such parts, as hereinafter described, and pointed out in the claims.

Referring to the drawings, Figure l is a view in central section through a tank, showing a ball-cock embodying my invention with parts broken away to show construction. Fig. 2 is a detail view, in central lengthwise section, through the cock, showing the valve closed. Fig. 3 is a detail view, in centralvertical section, through the cock, showing the valve opened. Fig. 4 is a detail end view of the cock. Fig. 5 is a detail view in crosssection through the piston on a line between the retarding-piston and valve, looking toward the latter.

In the accompanying drawings the letter (L denotes the shell, of any desired form and usually cast to shape in a single piece from any suitable metal.

The letter 5 denotes the inlet, and c the outlet, of the shell. A shoulder forming a valve-seat a is located between the inlet and outlet, and a valve g on the valve-spindle d is adapted to close tightly against the valveseat a. A cap 6 closes the open end of the shell, as by means of interengaging screwthreaded parts, and a central opening is provided in the cap e, through which the valvespindle 01 extends to the outer side of the easing. This opening is suitably packed to prevent leakage of fluid from within the shell,

and a chamber 6 may be formed in the cap for the reception of a balancing-shoulder d on the valve-spindle d.

A cylindrical chamber a is formed in the shell, into which the valve-spindle d extends,

valve-spindle is a retarding-spindle f. The wall of the chamber in which this retardingpiston is located is so formed that the chamber is not entirely closed by said piston as the valve-spindle commences to move, but in the continued movement of the valve-spindle the retarding-piston closes against the wall of the chamber to prevent any great outflow of fluid. from behind the piston, thus providing means for retarding the movement of the valve-spindle and preventing water-hamm ering as the valve closes.

Any suitable vent may be provided from the chamber behind the retarding piston to allow it to move sufficiently to enable the valve to close tightly on its seat.

The valve g consists of a cup-shaped piece g, in which is located the packing g and a disk g is interposed between this packing and a spider d on the valve-spindle. This spider is properly constructed to effectually back up and support the packing g but at the same time not to obstruct the fiow of water around the valve.

A float-lever h is supported on apin and between ears a on the shell, the end of the lever engaging the valve-spindle d. A slot h is formed in the float-lever, and a pin a, secured to the ears a passes through this slot. The float-lever is connected with any ordinary fioat 1', adapted to move the valvespindle as the water contained in the tank 7:; changes its level.

The shorter end of the float-lever his loosely connected to the outer end of the valve-spindle d by the described means, which provides for a rocking movement of the float-lever and a motion of the valve-spindle in astraight line in opening and closing the valve. The fulcrum 7L2, formed on the lever close to the end which enters the slot in the valve-spindle d, is arranged to rest on a'bearing-surface, formed in this instance by the outer surface of the screw-cap e. In its rocking movement the lever rolls on this fulcrum, which is rounded or otherwise so shaped as to produce and within this chamber and secured to the the least frictional resistance to the rocking movement of thelever. This construction of the lever with the peculiar fulcrum located close to the weight (the resistance of the 1 valve-spindle to outward movement in opening the valve) enables a comparativelysmall and light float to be used, and yet at the same time one having sufficient power to enable the Valve to be promptly opened as the Water flows out of the tank. The function of the cars is to guide the float-lever in its movement in a downward plane, and the function of the pin is to prevent the accidental liftiu of the valve-lever out of the guides. The pin also serves as a pivot for the lever in the closing movement of the valve; but as the closing movement is made in the direction of flow of the water but a small percentage of power is required for this purpose.

The ears and the pin form merely one means of attachment of the lever to the shell; but any device for loosely connecting these parts in such manner as to permit the lever to have a rolling or rocking movement 011 its fulcrum as compared with the rotary movement on a fixed pivot will come within the scope of the main feature of my invention.

The fulcrum projection may obviously be formed on either the lever or the valve-body or cap, as desired without departing from my invention.

1 claim as my invention 1. In a valve, in'combinatiou, a valve-shell, a valve with its spindle projecting beyond the shell, a float-lever supported on the shell and with its inner end loosely engaging the valve-spindle, a rocking fulcrum located ad- FRANK JEWE'IT. \Vitnesses:

ARTHUR B. JENKINS, 0. ll. JONES.

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