US1587296A - Spring-secured safety valve - Google Patents

Description

Patented June 1, 926

'nueimn eensramn, or 330111;, saw 2031. I

SPRING-SECURED VALVE.

Application med December 17, 1825. Serial No. 75,800.

This invention relates to improvement in gas fixtures and has reference to the improvement of gas cocks or valves to prevent accidental opening of gas service lines, particularly thcserelated to gas stoves, ranges,

heaters and the like.

The object being to provide a construction both simple and inexpensive to pre clude the liability of children or the inexperienced inadvertently opening a gas supply control, such as a cock or valve.

A principal feature of my invention is the provision of means normally acting to prevent turning movement of the valve stem, which can be manipulated to open the gas supply only when considerable manual downward pressure is exerted on the operating handle after which the gas supply passage may be made free by a quarter turn of said handle; a

' A further feature resides in the two part construction of the valve proper, which comprises a valve sleeve tapered to coincide with its casing and revoluble therein and a stem slidable in said sleeve and revoluble with said sleeve in the casing.

Further objects and features incident in the particular construction of the parts of the structure will be hereinafter apparent in the specification taken in connection with the accompanying" drawing, in which I have illustrated 'a preferred embodiment, in which drawing a Fig. 1 is a central of the device'closed.

Fig. 2 is a partial sectional elevation showing the ports open. v

- Fig. 3 is a cross section on the 111163-3 of Fig.1, and f Fig. 4 is a cross section on the line 1 4 of Fig. 1.

Referring tothe drawings, 10 ind cates a valve casing and 11 and 12. its intake and outlet service pipes. The interior of the casing has the usual taper and is adapted to receive a correspondingly tapered valve sleeve 13.liaving a central bore 14, in which a valve stem 15 operates through the use 'of handle 16. A stop pin 17 is provided on the section with the ports sleeve 13'an'd is adapted to engage a shoulder 18 on the ;valve' casing to limit the swing of the handle. Stem 15 further is provided with oppositely extending pin 19, operating in grooves 20, and lockin pin 21,-normally engaging slots 22 in the ottoin of the easing, said casing, at the bottom, being closed by a threaded cap 23, to prevent leakage.

' The stem is also formed with a port 24,

normally ranging at a right angle to thevservice pipes 11 and 12, and the sleeve 13 also has a port 25', likewise normally closed and in vertical alignment with the port 24,

but not in normal horizontal alignment therewith.

The valve stem 15, is urged upwardly by a heavy spring 25, causing the pin 21 to bottom in the casing slots 22, thus locking the valve parts against rotation under 1101" mal conditions.

When, however, the handle 16 is de ressed against the action of spring 25, w 'ch is heavy enough to'thwart a childs efforts to a force the parts, downwardly, the stem 15 is likewise depressed until the ports 24 and 25 register and the pin- 21 is free of'the slots 22 in the casing, when the valve parts 13 and 15 may be turned to .cause'the said registering parts' to align ,with the service pipes 11' and 12 and complete the service line. aswill be understood.

The same construction may-be applied to the upper burner cocks or valves of a ran or Steve by changing the parts as will apparent to those skilled in the art.

Various changes. in the form, proportions, and minor details of my invention ma be resorted to at will without de arting f rom the spirit and scope thereof; l lenoe I ,con-

sider myself entitled to all suchvariations as may lie within the terms of my claims.

What I claim as new, is

1. A safety cock for gas in combination, with the usual valve'casing having a tapered interior and radial slots at the bottom thereof, a valve shell having a portnormally ranging, at a right angle to the service pipes and oppositegrooves, opening at the top thereof, a valve stemhaving. a handle, pins-operating in said grooves, a port normally-in vertical alignment'with the port of the shell and above the same,

and pins near the bottom thereof to engage the slots in said casing to normally lock the ;valve parts against rotation, means for" 10B urging the stem into the above named position to close the gas supply and means for lines comprising,

' normally locking depressing said stem to unlock said stem so that said stem and valve shell may be re volved for o ening said supply.

2. In a sa ety cock for gas lines, in combination with a casing, a two art valve therein, one part being reVoIubl e therein, the other part being slidable and revoluble within the first, both parts having ports vertically aligned but normally non-registering, slidin locking means between the valve parts, s dable locking means between the parts and the casing whereby when the inner part is depressed, the said ports are caused to register and the parts unlocked from the casing to permit the valve structure to be turned, so that the said ports are aligned with the service pipes to open the gas line. i

3. A gas control device comprising a casing, a two part valve therein, consisting of a valve shell and a stem slidable therein and both revoluble within said casing, means for rotation, said va ve being adaptedto be unthe valve parts against locked by depressin one of said parts to revoluble within said casing, means for normally locking the valve to the casing, and means for unlocking said valve to permit the turning thereof by depressing one of said parts, to open the service line.

5. A gas control device comprising a casing, a multiple part valve consistin of a valve shell and a stem slidable therem and both revoluble within said casing, normally locked against rotation and means, when one part of said valve is depressed, for unlocking said valve to permit of its turning to open the service line.

Signed at New York city in the county of New York and State of New York, December, A. D. 1925.

EUGENE GANSFLRIIVED."

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