US508108A - Self-closing c - Google Patents

Description

(No Model.)

S. HEOHT. SELF OLOSING OUT-OFF FOR GAS BURNERS.

No. 508,108. PatntedNov.7, 1893.

UNIT D STATES PATENT OFFICE.

SAMUEL HEOHT, OF CHICAGO, ILLINOIS.

SELF-CLOSING GUT-OFF FOR GAS-BURNERS.

SPECIFICATION forming part of Letters Patent No. 508,108, dated November 7, 1893. Application filed May 15, 1893. Serial No. 474,289. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL HEOHT, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Self-Closing Cut-Offs for Gas- Burners, of which the following is a specification.

This invention relates to improvements in gas-burners, and more especially to that class of such burners in which the channel for the flow of gas is automatically opened and closed; and it consists in certain peculiarities of the construction, novel arrangement, and operation of the various parts thereof, as will. be hereinafter more fully set forth and specifically claimed. 7

The objects of my invention are first, to provide a burner, which shall be simple and inexpensive in construction, yet strong and durable, and can be easily attached to an ordinary gas-fixture; second, such a burner, which by reason of its construction and operation will automatically open and close the channel through which the gas flows, thus preventing waste thereof and accidental asphyxiation; and third, a burner in which the valve may be suitably and more readily adjusted on its stem.

In order to enable others skilled in the art to which my invention pertains to make and use the same, I will now proceed to describe it, referring to-the accompanying drawings, in which Figure 1, is a perspective view of a portion of a gas-fixture with my burner attached thereto, showing it in operation. Fig. 2, is a vertical sectional view of the burner detached from the fixture. Fig. 3, is a plan view of the base of the burner. Fig. 4, is an enlarged sectional view of the burner-tip, and a por tion of the expansible and contractible valvestem or rod, showing a modification in the manner of connecting the two together; and Fig. 5, is a vertical sectional view of a portion of the upper part of the burner, its tip, and a part of the valve-stem, showinganother modification in the manner of securing the latter to the tip.

Similar letters refer to like parts throughout the different views of the drawings.

A, represents a portion of a gas-fixture or pipe of the ordinary or preferred kind, which is provided as usual with a key a, for opening and closing the same, to allow the passage or to shut off the flow of gas. To the upper portion of the fixture A, is secured my burner, which as shown in Fig. 2, is preferably formed of two pieces B, and B, the former of which constitutes the base of the burner, and is provided on the upper part of its periphery with screw-threads b, to engage similar threads on the lower portion of the piece B, which lower part is enlarged annularly and forms a chamber 0, within which the valve D, and its adj usting device may operate.

As shown in Figs. 1 and 2 of the drawings,

the base-piece, as well as the lower part of the piece B, is provided with an annular flange c, which are milled on their peripheries in order to provide a hold for the hands, with which the pieces B, and B, may be firmly screwed together. The fixture or pipe A, is secured to or within the opening b, of the base, the upper part of which opening is circumferentially enlarged, as at 5 to receive or form a seat, under certain circumstances, for the adjusting device E, which is located on the lower portion of the valve-stem or expansible and contractible rod. The inner lower surface of the piece B, is provided with a valve-seat c, which is preferably made in the form of an annular rim or flange, against the lower v surface of which the valve D, is drawn by ,the contraction of the valve-stem or the rod F, which is screw-threaded at its lower portion, and is passed through the valve D, and engages with the adjusting device E, which is preferably spherical in form, and is provided on its lower portion with a groove or recess e, for the reception or engagement with a screw-driver or similar instrument. The upper portion of the valve-stem or rod F, or that portion thereof which passes through the crown of the tip G, is enlarged, as is illustrated in Fig. 2, and is passed through a suitable opening, near, and preferably, to one side of the orifice g, for the escape of gas, and proor formed by the reduction in the size of the valve-stem F, rests on the crown of the tip G, and that in the modification illustrated in Figs. 4 and 5, the projecting portion of the stem is reduced and provided with a tubular piece 0, which is clamped or otherwise se- 5 cured around said stem or rod, and rests on the upper surface of the crown, while the shoulder 9', supports the other side thereof. It will therefore be understood that as the projecting portion of the stem F, is reduced to a minimum size, it will be readily heated by means of the flame applied to the tip for igniting the gas, and that as the said reduced portion passes loosely through the crown of they tip, the heat will rapidly be conveyed down the stem, which will cause sufficient expansion to slightly extend the same, when the valve D, by reason of its gravity, and being loosely secured on the stem will be slightly removed from its seat 0', and

will permit the gas to escape, and that as;

soon as the flame is extinguished or removed from the tip of the burner, the valve-stem will be cooled and thereby caused to contract,

which will draw the valve upward close. against its seat, and effectually shut off the.

flow of gas.

In Fig. 4,1 have shown a part of the upper portion of the valve-stem F, encompassed by a tubular piece h, and instead of using this, construction, I may sometimes employ that illustrated in Fig. 5, in which the tube h, is extended so as to cover the entire projecting part of the stem.

As an auxiliary cut-off, or additional security against the escape of gas in the event of the displacement of the upper portion of the valve-stem, and also for the convenience of adjustment, I secure on the lower end of the stem or rod F, a piece E, which is preferably in the form of a sphere with its upper portion flattened, upon which the valve D, rests, and is provided on its lower portion with a groove e, or its equivalent, for engagement With a screw-driver or wrench to be. used for turning the piece E, when it is desired to raise or lower the valve D, on the stem. By reason of the fact that the stem F, passes loosely through the crown or tip of the burner, it will be readily perceived that should the shoulder or enlargement g be broken 01? or disconnected from said stem, the stem will fall and the spherical piece E, upon the under side of the valve D, will fall into the enlargement 12 of the opening b, of the base B, and will entirely close said channel and prevent any gas from entering the burner from the pipe A. Thus, if the gas is burning the light will go out and will givenotice that the automatic out 01f mechanism is out of order and that the burner cannot be again lighted until the mechanism is repaired. Furthermore it will be seen that should the shoulder or enlargement 9 be broken off or disconnected from the stem F, when the light isout and the cook a, is turned on, the stem, valve, and piece E, will fall as before described and said piece E, will close the passage 1), and will prevent the gas from entering the burner and escaping into the room.

It will be observed by reference to the drawings that theshoulder of Figs. 1 and 2, and the tubular pieces 71,71, of Figs. 4: and

5, serve in addition to bearing upon the burner tip and supporting the stem F, to close the opening in said tip through which the stem extends so as toprevent the escape of gasthrough said opening.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with a burner; of a contractible and expansible rod passed loosely through the tip end of the burner, means for securing the rod, arranged above the tip end of the burner, and a valve secured on said rod, substantially as and for the purpose described. I

2. The combination with a burner, of acoutractible and expansible rod passed loosely through the tip end of the burner and having its upper portion enlarged, and; a valve carried on the lower portion of said rod, substantially as described.

8. The combination with a burner, of a contractible and expansible rod having its upper portion enlarged and projecting beyond the crown of the tip and loosely secured thereto, and a valve loosely secured on the lower portion of said rod, and having means for adjustment, substantially as described.

4. The combination with a burner, composed of the pieces B, and B, secured together to form the chamber 0, the piece 13, having the valve-seat c, of; a contractible and expansible rod or stem F, passed loosely through the tip end of the burner, means for securing the rod, arranged above the tip end of the burner, and a valve loosely secured on the lower part of said stem, substantially as described.

5. The combination with a burner, composed of the piece B, having the opening I), with the enlargement b and the piece B, provided with the valve-seat c, and secured together to form the chamber 0, of the contractible and expansible rod F, loosely secured at its upper part tothe burner, a valve loosely secured on the lower part of saidstem or rod, and the adjusting piece E,engaging therewith, substantially as described.

6. Thecombination with a burner, composed of the piece B, having the opening 1), formed with the enlargement b and the piece B, provided with the valve-seat c, and with the lower end of the rod F, and adapted secured together .to form the chamber 0, of to adjust the valve D, substantiallyas dethe rodF, hayingits upper part enlarged and scribed. V

loosely secured to and projecting through the SAMUEL HEOHT. 5 crown of the tip, the valve D, loosely located Witnesses:

on the lower part of said rod, the spherical CHAS. C. TILLMAN,

piece E, having the groove e, and engaging E. A. DUGGAN.

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