US1209890A - Automatic gas-extinguisher. - Google Patents

Description

G. P. SCHMITT.

AUTOMATIC GAS EXTINGUISHER.

APPUcATmN FILED MAR.24.1916.

1,269.89@ Patented Das. 26, lQlt entra GEORG-E Pll'rIIllfIPll. SCHMITT, 0F NEW YORK, N. Y.

AUTOMATIC GAS-EXTINGrUISI-IER.-

Specification of Letters Patent.

Patented Dec. 26, 1916.

Application led March 24, 1916. Serial No. 86,374.

To all whom t may concern Be it known that I, GEORGE PHILIPP SoHMrr'r, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Automatic Gas-Extinguishers, of which the following is a specification.

This invention relates to improvements in devices for extinguishing the flame of gas jets, particularly of the type used for heating, known as the Bunsen burners.

rIhe principal object of the invention is to provide a means which will automatically close the gas valve, when for any cause the flame becomes extinguished, thereby preventing loss of gas, and possible danger of explosion.

Another object is to provide such devices in forms which may be applied to any of the ordinary type of gas burners without special diiliculty and which in no-wise interferes with their customary operation and use.

These and other objects are attained by the novel construction and combination of parts hereinafter described and shown in the accompanying drawing, and in which :w-

Figure 1 is a plan view, showing a burner having the device attached thereto. Fig. 2 is a side elevation of the same. Fig. 3 is a front elevation, the inlet pipe being shown in section. Fig. 4 is a fragmental edge view of the control device. Fig. 5 is a side view of the same, and Fig. 6 is a fragmental perspective view showing a detail of construction.

In the drawings, the numeral 10 represents the base of the burner, here indicated to be of the well known Bunsen type, to the upper end of which is attached an inlet pipe 11, having an ordinary form of valve 12, through which gas may be supplied from any convenient source by the pipe 13.

Rising from the standard, and communieating with the pipe 11, is a vertical tube 15, the same being open at the top 16, used as a burner, and which is slotted across on one side to receive the inturned end 18 of the control element which is formed of two strips of metal, respectively 19 and 20, the same being of dierent heat conducting properties, as for instance, brass welded or otherwise united to a corresponding strip of iron. These strips or tapes form the control and are coiled spirally a few times around the open end of the burner, their 22, formed with ratchet teeth 23 at its lower f side, the same passing through an elongated aperture 24 formed in the oii'set upper end 25 of a lever 26 pivoted on a horizontal post 27 the latter being rigidly engaged with the tube 15.

The lower end of the lever 26 is turned outward, forming a toe 28, adapted to receive the point 30 of a bent valve lever 32, connected to the stem 33 of the valve 12, and having afxed upon it a weight 34 of suliicient magnitude to close the valve when the lever is released from the toe 28.

Surrounding the post 27 is a helical coiled spring 35, one end being` engaged with the burner tube 15 and the other connecting with the lever 26 in such manner as to press it forward so that the toe is normally engaged with the valve lever.

In operation, the gas being turned on and the valve lever 32 held in its raised position, the heat from the gas flame causes the coil control to expand, moving the arm 22 rearwardly, causing the teeth 23 to slip through the slotl 24 of the lever 26, the teeth being inoperative when moving rearward. `When, however, the llame becomes extinguished, the coil immediately contracts, whereupon the teeth 23 engage with the arm 25, moving the lever 26 in such manner that the toe is disconnected from the point of the valve lever, allowing the valve lever 32 to drop by reason of the weight 34 and close the valve thereby cutting @E the gas supply.

From the foregoing it will be observed that a similar construction can be arranged for other forms of gas jets as well as for the Bunsen type, therefore, it is not desired to be strictly held to the exact construction shown, as modifications can be made within the scope of the claims.

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

1. In a device of the class described, the combination with a standard, an inlet pipe connected therewith, a valve in said inlet pipe, and a vertical burner tube engaged with said standard remote from said valve, of an expansible coil passing through said burner, an arm extending therefrom, a post attached to said burner tube parallel with said arm when the latter is in a normal position, a lever pivoted on said post, means combined with said arm adapted to actuate said lever when moving in one direction, a second lever operatively engaged with the stem of said valve, a weight adjustable thereon, and means combined with said arm adapted to hold the valve lever in a raised position when in a normal position.

2. In a device of the class described, the combination with a standard, a gas supply pipe entering said standard, a valve in said gas pipe, and a vertical burner tube on said standard remote from said valve, of a plurally coiled control comprised of two dierent metals engaged at the top of said burner tube having a part entered therein, an arm formed with said control extending laterally outward, a ratchet pawl pivoted to said arm, a lever pivoted to said vertical tube, having its upper end engageable with said pawl, a second lever operatively combined with said valve having a part engageable with the lower end of the first mentioned lever, means for depressing said second lever when free, said means being adjustable, and means combined with the iirst mentioned lever for holding the valve lever in a normally open position.

Signed at New York, in the county of New York, and State of New York, this 14th day of March, 1916.

GEORGE PHILIPP SCHMITT.

Copies of this patent may be obtained for ve cents each, by addressing the "Commissioner of Patents, Washington, D. G.

Images