US656118A - Automatic gas-lighter. - Google Patents

Description

No. 656,l|8. Patented Aug. I4, |900. E. C. JONES & M. M."-BAHRETT.

AUTOMATIC GAS..LIGHTEB.

(Application Bled Oct. 2, 1899.) (N u M u d al.)

'1 NITED STATES PATENT OFFICE.

EDWARD C. JONES AND MORA M. BARRETT, OF SAN FRANCISCO, CALI- FORNIA, ASSIGNORS TO JONES da BARRETT, OF SAME PLACE.

AUTOMATIC GAS-LIGHTER.

SPECIFICATION forming part of Letters Patent No. 656,118, dated August 14, 1900.

Application tiled October 2, 1899. Serial No. 732,881. (No model.)

To all whom it may concern,.-

Be it known that we, EDWARDC. JONES and MORA M. BARRETT, citizens of the United States,residin g at San Francisco,in the county of San Francisco and State of California, have invented certain new and useful Improvements in Automatic Gas-Lighting Devices; and we do hereby declare the following to be a full, clear, and exact description of said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

This invention relates to improvements in automatic gas-lighting devices.

In the drawings, Figure l is a side elevation of a gas-tip provided with a lighting attachment constructed in accordance with this invention. Fig. 2 isa vertical section through thesame. Fig. 3 isa side elevation of a gastip provided with an incandescent -mantle attachment and having a lighting attachment secured thereto. Fig. 4 is a vertical section through the end of the pilot shown in Fig. 1. Fig. 5 is a vertical section through the gascock shown in Fig.'3, showing an alternative form of construction of the regulator of the pilot. Fig. 6 is a side elevation of the gas-cock. Fig. 7 is a detail view of the end of the pilot, having an extension for mixing air with the gas prior to its impinging on the igniter.

To facilitate the description of the invention, with reference to the drawings, we will use the letter A to designate a gas-cock.

ThroughY the side of the valve-barrel is bored.

a small perforation B, to operate as a feeder to the pilot C; The pilot C is attached to the cock in the alternative constructions illustrated in Figs. 1 and 2 and 3 and 5. In both constructions the valve-barrel is provided with an enlarged boring to receive the lower end of the pilot C, and with which the perforation B communicatpf In the construction shown at Fig. 2k the`lower end of the pilot is attached to the cock inline with the perforation B, `while in the construction shown at Figs. 3 and 5.the lower end of the pilot is introduced in a boring at an angle to the perforation B. In the latter construction the cock is provided with the extension A to receive this boring. The construction last described is particularly advantageous in those structures in which the lighting device is inclosed, as by a chimney, as shown in Fig. 3, for the reason that such arrangement of the parts permit-s the screw valve or regulator D? for the gas passing through the pilot C to be located outside of the chimney inclosing the lighting device, thus affording easy access to the regulator without the removal of the chimney. In both instances the regulator is a screw-threaded valve. In the form shown at Fig. 2 the cap D is threaded to engage the end of the pilot C, which is a hollow tube having a perforation C in the upper end and a solid cone-shaped upper extremity C2.. (See Fig. 4.) The cap D is slightly chambered and perforated at the top to permit the iiow of the gas. The inner face of the top of the cap D is coned to receive the cone-shaped extremity C2, to fit ihe same, and to shut o the flow of the gas through the aperture D. By means of the screw-threaded connection between the pilot C and the cap -D the space the perforation or port thus becoming a valve-r seat. By inserting or withdrawing the screw D2 the flow of gas into the pilot C may be regulated. The operation of this regulation is by turning the cap D or screw D2 to cause either to approach or recede from its valveseat. By the construction using the cap D a further advantage is gained in that it admits of a fine adjustment of the distance between the outlet for the gas from the pilot member and the gas-igniting material. This is accomplished by raising and lowering the cap D', bringing the perforation D nearer to or farther from the platinum loop E.

The ignitingmaterial used in the present invention is the loop E, constructed from platinum foil. About the free ends of the loop is molded a pellet F, of a suitable catalytic materialadapted to preliminarily warm IOO the platinum, that the gas may the more rapidly raise the platinum to incandescence to ignite the gas. In molding the pellet F the end lis formed in and about a perforation in the end of the pivoted arm G, which carries the circular guard G', which is providedto prevent the loop E and the pellet F from being struck and broken. The arm G is piv-Y oted to the arm H to enable the pellet and loop being moved laterally into the path of the gas flowing from the pilot, the direction of ilow of which gas may be slightly changed by numerous causes, as by a draft, and, as shown, the pivotal connection is such that the arm remains in any adjusted position to which it is swung. The arm H fits the pilot G firmly, but in a manner to permit its being moved up and down the same. This enables us to have a rapid coarse adjustment of the pellet and loop above the top of the cap D.

In the application of this invention to the burners of usual construction the valve K, which has the usual passage K, is cross-cut to form the passage K2. The passage K2 is so formed that the solid wall K3 is maintained of a width so that when the one edge of the same partly covers the perforation B, leading to the pilot, the other edge partly covers the main gas-passage leading to the burner or tip, the supply-pipe being open at the same time. In this manner the gas is admitted into the burner prior to closing it off from the pilot, and therefore during the period in which the gas flows through the pilot to render the loop and pellet incandescent the gaspassage leading to the burner is becoming filled or primed. When the valve is turned for a full flow of gas into the burner, the Wall K3 extends across the perforation B to cutoff the pilot, and thereby save the loop and pellet from the injurious effects of remaining in the Iiame.

A small interval of time is required for the gas from the pilot to impinge on the loop E and pellet F before the loop is rendered incandescent to light. the gas. The best result is attained when the valve is turned sucently to admit the gas freely into the pilot and held there until the gas from the pilot is lighted and during which time the gas is almost entirely cut off from the main passage. It is for this purpose that we employ the washer L, which is cut from the shoulder L, and the spring-dctent M, which catches and checks the rotation of the valve inthe properposition. (Shownin Figs. 2 and 5.) By thus checking the movement of the valve the operator is warned that the valve is in the correct position to remain until the gas from the pilot C is ignited. Then by continuing the rotation the gas is admitted more fully into the main passage to the tip, where it is lighted by the iiame from the pilot, the feed-passage of which is maintained partly open and is not closed until the gas is turned on full into the main passage. The lighting of the gas from the main passage is hastened by the previous priming, as described.

In many qualities of gas it is desirable to mix it with atmospheric air prior to directing it upon the igniting material. It is to accommodate this requirement that we have employed the extension-tube N, upon which the arm G, carrying the loop E, is secured. This tube is provided with an opening N for the admission of the air. With this tube in place the atmospheric air is drawn into said tube by the flow of the gas, and the air and gas are thoroughly and properly mixed.

Having thus described this invention, it is claimed l. In a gas-lighting device, a burner, and a member carrying a substance adapted to light the gas flowing from the burner when said gas contacts with said substance, said member being so connected to its supporting part that it has adjustable movement across the burner and will remain in the position to which it is adjusted; substantially as described.

2. In a gas-lighting device, a burner, an arm pivoted to a suitable support, and a substance supported by said arm in the path of gas flowing from said burner and adapted to ignite the gas by contact therewith, the pivot connection between said arm and its support being such that the arm can be adjusted across the burner and will remain in its adj usted position; substantially as described.

In testimony whereof We have hereunto set our hands this 7th day of September, 1890.

EDVARD C. JONES. MORA M. BARRETT.

Witnesses:

E. S. BIRDSALL, WM. G. ROUNTREF..

IOO

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