US691502A - Cock for gas-fixtures. - Google Patents

Description

No. 69|,502. Patented Ian. 2|, i902.

.1. n. STURGES.

COCK FOB GAS FIXTURES.

(Application filed June I 1901.)

(No Model.)

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UNITED STATES PATENT OFFICE.

JAMES D. STURGES, OF CHICAGO, ILLINOIS.

COCK FOR GAS-FIXTURES.

SPECIFICATION forming part of Letters Patent No. 691 ,502, dated January 21, 1902.

Application filed June 1, 1901. Serial No. 62,719- (No model.)

This invention has for its object to provide novel features of construction for the cock of a gas-fixture which adaptit to completely out off the flow of gas to the burner when the plug of the cock is turned in one direction until its rotation is arrested by a stop and permit a graduated but diminished How of gas to the burner when the plug is turned oppositely until arrested by another stop,

the full fiow of gas being afforded when the plug is adjusted so as to locate projections thereon intermediately of the stops or abutments on the body of the burner.

The invention consists in the novel construction and combination of parts,as is hereinafter descrihed,and defined in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate correspondingparts in all the figures.

Figure 1 is a partly-sectional side view of the improvement applied to a gas-burner and showing the gas-passage in the cock fully open. Fig. 2 is a transverse sectional view on the line 2 2 in Fig. 1. Fig. 3 is a transverse sectional view of the same substantially on the same line, but showing the plug of the gas-cock turned to completely out off the flow of gas to the burner. Fig. 4 is a like view showing the plug of the cock turned oppositely for part of a revolution, so as to adjust the'gas-passage for a small flow of gas to the burner. Fig. 5 is a sectional plan view substantially on the line 5 5 in Fig. 1, showing the adjustment of the plug of the gascock for alfording a free flow of gas to the Fig. 6 is a similar view, but showing the plug of the cock adjusted to completely close the gas-passage controlled thereby. Fig. 7 is a similar view, but showing the plug of the cock adjusted to permit a light flow of gas therethrongh; and Fig. 8 is a detached perspective view of an adjustable stop forming a feature of the invention.

. In the drawings,8indioates the body of the cock, 9 a gasburner attached to one end thereof, and 10 the plug-valve of the cook. The body 8 is provided at one end with a socket-enlargement a, designed for connec- I tion with a tubular portion of a gas-fixture,

(not shown,) and at the opposite end a suitable opening is formed, as usual, for the accommodation of the lower end of the burner 9, which may be of any preferred kind.

In the body 8 alongitudinal bore Z7 is formed, which extends from the socket a to the upright opening for the burnerat the opposite end of'the body.

At a point between the socket and burner a preferably-coniform orifice o is formed transversely in the body 8 and intersects the longitudinal gas passage or bore 1), and in said orifice is fitted the plug-valve 10, that atthe smaller end thereof. is provided with the usual washer d and keeper-screw e, the latter having a threaded engagement with a tapped perforation formed in the smaller end of the plug, whereby the latter is held in the body 8 gas-tight, but free to receive rotatable adjustment by the manipulation of the flattened grip-piece 10 upon the opposite projecting end of the plug 10.

As shown, a segmental collar g extends from the body 8 at the larger end of the coniform orifice c, said collar terminating in two shoulders g 9 that may with advantage define the arc of the segmental collar as less than a semicircle in extent, as clearly shown in Figs. 5, 6, and 7.

Two stop-pins h h are provided, which are screwed into threaded perforations in the plug 10 in the same vertical plane, but separated a suitable degree. These plugs h h are adapted to traverse the space between the shoulders g 9 when the plug 10 is rotatably moved, and it will be understood that when the stop-pin it has contact with the shoulder g the transverse opening I) in the plug will be disposed at'or near a right angle to the longitudinal gas-passage bin the body 8 of the cock, which of course will cut 0d the flow of gas to the burner 9, this disposal of parts being indicated in Figs. 3 and 6. The pin h has an eccentric head if formed thereon, which head will contact with the shoulder 9 when the plug 10 is rotatably moved so as to cause such a contact.

It will be seen in Figs. 4 and 7 that the head 71. is so relatively positioned as to cause the gas-passage b in the plug 10 to be slightly opened when the swell on this eccentric head is turned away from the shoulder 9 and the low side of said head has enforced contact therewith when the plug is rotatably moved to eftect an impingement of the head upon the said shoulder.

If it is desired to increase the width of'the crevice so, that affords a small passage for gas to the burner 9, the application of a screwdriver to the kerf in the eccentric head 71. will enable the adjustment of said head so as to cause the swell on the head to have contact with the shoulder, and obviously the degree of opening given atnc may be exactly defined by a turning movement of the headed pin 71.. I

In some cases it may be found sufficient to employ only the headed pin h and so position it and the shoulder g that the gas-passage will be closed when the head 7L2 has contact with said shoulder, but be slightly open when the headed pin contacts with the other shoulder 9 It is evident that the rocking adjustment of the plug 10 so that the pins 71. h are positioned between the shoulders g will open the gas-passage through the plug 10 more or less, a full flow of gas therethrough being af- I forde'd when the pin it is about midway between said shoulders.

The improvement affords simple, practical,

. andreliable means to prevent complete 010- sure of the gas-passage through the gas-cock to'a burner that is to be kept just lighted without affording illumination, so as to be ready at any time to shed full light by simply turning the plug or key of the gas-burner,

so as to open the passage therethrough.

Having thus described my invention, I

.elaim as new and desire to secure by Letters may be rotatably adjusted, said projection contacting with the shoulder when the plug is turned in one direction, to prevent complete closure of the transverse passage, and by rotatable adjustment define the degree of opening thus provided. v

2. In a gas-controlling cock of the character described, the body having a longitudinal bore therein and a transverse orifice intersecting the bore, a plug held to turn in the orifice and having a transverse gas-passage adapted to be alined with the bore of the body, two projections on the body at one end of the transverse orifice therein, a pin onthe plug adapted to contact with one of the projections when the plug is turned sutficiently to close the gas-passage in the plug, and an eccentrically-headed pin on the plug adapted by rotatable adjustment to define .a graduated opening in the plug when said head c0ntacts with the other projection on the body. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES D. STURGES. Witnesses:

JOHN H. CAMERON, WM. T. FENToN.

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