US643571A - Safety attachment for valves. - Google Patents

Description

No. 643,57l. Patented Feb. l3, I900.

P. a VAN WIE. Q

SAFETY ATTACHMENT FOR VALVES.

(Application filed Nov. 27, 1899.)

(No Model.)

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WITNESSES r INVENTOR {a gm fl w am; 7/4. 6 By 'ul m j Attormgrs.

ma norms PEYERS co, Puoruuwo. WASHINGTON. 0 cv NITED STATES ATENT FFICE.

PETERG. VAN WIE, OF DETROIT, MICHIGAN.

SAFETY ATTACHMENT FOR VALVES.

SPECIFICATION forming part of Letters Patent No. 643,571, dated February 13, 1900.

Application filed November 27, 1899. Serial No. 738,280. (No model.)

To all whom, it may concern.-

Be it known that I, PETER G. VAN WIE, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Safety Attachments for Valves; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates toasafety appliance for the valves which admit gas to gas-burners, and has for its object an improved device arranged to be used in connection with a pilot-burner and a main burner and to prevent the careless lighting of the main burner until the valve of the pilot-burner has been first turned and opened.

In the drawings, Figure 1 is a plan view showing the valve of the pilot-burner at the middle and the valves of two main burners,one at each side of the pilot-burner valve. Fig. 2 is a front elevation. Fig. 3 is a detail.

A indicates the gas-pipe, into which are tapped the valve-casings B, O, and D of the valves for three burners.

0 indicates the pilot-burner valve, and 0 indicates the lever by which the valve is turned in its seat.

To the pipe A is secured by studs a a pair of vertical guides 12 b, and in the vertical guides rest the stems h h, which support a bar E, which carries three quadrants e, f, and g. Of these quadrants e is located on an are that is concentric with the center of the valve that turns in the casing B, and the quadrant is provided with an inclined or sloping upper surface that extends fromits end e nearly to the end e and beyond the slope and between the end of the slope and the end of the quadrant is a notch 11.. The quadrant g is located at a point concentric to the center of the valve which turns in the seat of the case D. Its surface slopes from the end 9 nearly to the end 9 where it is provided with a notch n between the end of the slope and the extreme end of the quadrant. The quadrant f is located in an arc concentric to the center of the valve which turns in the seat 0. Its

surface slopes from the end'f to the end f where it terminates with a stop f but this quadrant has no notch in it. The three quadrants are secured to the bar E, which is supported by the stems h h, which extends through the guide I), on springs H, that rest in the guide, surround the stemsh h, and bear upward against pins 19. The bar E is movable in one direction when forced against the tension of the spring H, and it returns under the tension of the spring H to its-normal position. The lever c of the pilot-valve has an arm that extends over the quadrant f, and the lever b of the main valve B has an arm that extends over the quadrant e and rests when the valve is closed in the notch n. The valve-lever of the valve D is provided with an arm which extends over the quadrant g and which rests normally when the valve is closed in the notch 01. The slope of the quadrant f is in a direction opposite to the slope of the quadrants e or g. The lever c of the valve 0 is provided with an arm that extends over the quadrantf.

When the valves are closed, the arm of the valve-lever b is secured from turning because of the engagement of the arm extending from it and resting in the notch 02, and the arm of the Valve-lever d is secured from turning or from being turned because the arm which extends from it engages in the notch n, and the bar E is held by the spring H up against the levers. The lever 0, however, can be turned because the arm which extends 'from it is at the lower end of the slope f, and if the lever c be turned the arm extending from it engages over the sloping quadrant f and presses the quadrant and the bar against the springs H until the quadrants e and g are forced backward or downward so far that the notches no longer prevent the levers b and d from being turned, and therefore after the valve of the pilot-light has been turned so that the pilotlight may be ignited the main valve, or' either of the main valves, may be turned, and by properly arranging the pilot-light or pilotlights the main supply-valve will always be ignited from the previouslyignited pilotlight, and consequently a supply of gas from the main valve cannot escape to do injury.

What I claim is- 1. In combination with the main supplyvalve of a gas-burner, avalve forapilot-light, I bar is actuated by the valve-lever, substanit look for the main valve, arranged to be n11- tially as described. IO locked by opening the valve of the pilot-light, I In testimony whereof I sign this specificasubstantially as described tion in the presence of two witnesses.

2. In combination withaplug-valve, an arm PETER G. VAN VIE. extending from thelever 0f the valve, a spring Witnesses: locking-bar provided with an inclined bear- JOHN N. GooDRIen,

ing engaging said arm, whereby the locking- M. E. KOTT.

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