US349389A - Automatic safety-valve - Google Patents

Description

-(No Model.) PLGENNET & J. WYMAN, Jr.

AUTOMATIC SAFETY VALVE. No. 349,389. Patented Sept. 21,1886.

N. PETERS. PhnkmLlmograpMr, Wuhinglnn. 11 a UNITED STATES PATENT 'OFFICE.

PAUL GENNET AND JAMES 'WYMAN, J R. OF COCHRANTON, PENNSYLVANIA.

AUTOMATIC SAFETY-VALVE.

SPECIFICATION forming part of Letters Patent No. 349,389, dated September 21, 1886. Application filed May 7, 1886. Serial No. 201,460. (No model.)

' States, residing at Cochranton, in the county of Crawford and State of Pennsylvania, have invented a new and useful Improvement in Automatic Safety-Valves, of which the following is a specification.

Our invention relates to an improvement in gasregulating valves 5 and it consists in the peculiar construction and combination of devices,that will be more fully set forth hereinafter, andparticularly pointed outin the claims.

In the drawings, Figure 1 is aside elevation of a valve embodying our improvements. Fig. 2 is a vertical longitudinal sectional view of the same. Fig. 3 is a top plan view partly in section.

A represents a pipe-coupling or valve-case, which is provided with a valve-seat, B, located between the inlet-opening O and the dischargeopening D. The valve-seat communicates at its lower end with the inlet-opening O, and to the upper side of the pipe-coupling or valve- U case is screwed a vertical sleeve, E, through whichpasses a valve-stem, F. To the lower end of the valve-stem is secured a cup-shaped valve, G, which fits in the valve-seat and normally closes the same, so as to cut oft communication between the inlet and the discharge openings of the pipe-coupling or valvecase. To the upper end of the sleeve E is screwed a head, H, through which the upper end of the valve-stem passes, and from one side of the head H projects a horizontal sleeve, I. To the upper end of the valve-stem F is attached a head or button, K, having an opening in one side, through which passes the upper end of a vertical stud or pin, L, that projects upwardly from the head H. The upper end of the said.

pin is screw-threaded for a suitable distance, and on the said threaded end, above the button K, is a nut, M. A coiled retractile'spring,N,

connects the button K and the head H, and the function of the said spring is to keep the valve normally seated in the valve-seat or opening B. Near the upper end of the valve-stem, on

one side of the same, is made a recess, f. In the outer end of the horizontal sleeve I is secured abox, 0, through which passes a locking-pin, P, the inner end of which is pointed -and adapted to enter the opening f in the valvestem. A coiled extensile spring, R, is placed on the said locking-pin, and bears between a flange, which is formed on the pin,and the in ner end of the box 0, thereby normally pressing the locking-pin inwardly and keeping the inner end of said pin bearing against the side of the valve-stem. To the outer end of the lock ing-pin is attached a head, S.

The operation of our invention is as follows: The gas enters througha pipe communicating with the inlet-opening O,and presses under the valve G, thereby raising the same, and raising the button K on the upper end of the valvestem. By adj u'sting the nut M up or down the upward movement of the valve is regulated,so as to permit the said valve to rise any desired distance, and thereby open the valve-seat B to any desired extent, and thus regulate the flow of gas or fluid through the pipe. While the valve is raised, during the flow of the gas or fluid, the locking-pin is out of engagement with the opening fin the valve-stem, as the said opening is raised above the engaging end of the pin. In order to close the valve and cut oft the supply of gas or fluid, the valve-stem is depressed by bearing upon the button K, and when the valve is lowered sufficiently to become firmly seated in the seat or opening B, the opening f in the valve-stem aligns with the engaging end of the locking-pin, and the latter is instantly moved rearwardly by its spring, and thereby caused to engage with the valvestem and lock the valve firmly to the valveseat, thus efiectually shutting off the flow of gas or fluid, and keeping it closed until the supply is again wanted. I11 order to open the valve, it is only necessary to-draw thelockingpin outwardly by catching hold of its project ing head, thereby releasing the locking-pin from the opening in the valve-stem, when the pressure of the gas or fluid on the lower side of the valve raises it as far as the regulating nut M will permit. I

Having thus described our invention, we claim- 1. The combination, in a regulating-valve, of the valve-seat, the valve having the stem F, provided with the head or button K, the regulating-screw to limit the play of the valve, and the locking-pin adapted to engage the valve stem, to lock the valve in a closed position, substantially as described.

2. The combination, in a regulating-valve, of the valve-seat, the valve located therein, and having the stem F and the button K, the pin L, projecting from the valve-ease, the nut M, screwed on the upper end of the said pin, to bear against the button K, and thereby regulate the play of the valve, the locking-pin to engage the valve-stem, and the spring bearing 011 the said locking-pin, for the purpose set forth, substantially as described.

3. In a regulating-valve, the combination, with the valve-seat, of the valve located in the PAUL GENNE'I. JAMES WYMAN, JR.

WVitnesses:

'IsAAo MONDERAN, F. G. PRENATT.

Images