US617271A - Automatic cut-off for gas or vapor burners - Google Patents

Description

N0. 6|7,27I. Patent-ed lan. 3, |899. C. BARGAMIN.

AUTOMATIC CUT-DFF FOB GAS 0R VAPR BURN-ERS.

[Application lad Nov. 24, 1897.) No Model.) 2 Shets-Sheet I.

, Q25 g to@ @www2/ow@ 23 7 VWM/L No. 6l7,27|. Patented lan. 3, |899.

C. BARGAMIN.

AUTOMATIC CUT-OFF FOR GAS OR'VAPR BURNERS (Application led Nov. 24, 1897.) (No Model.) 2 Sheets-Sheet 2,

- 27 Suva/who@ @5W fwd @Wm ma Nome paens co.. Pnofoumo., w'AsnmnToN. u4 c.

CLIFFORD BARGAMIN, OF NEIVPORT NEWS, VIRGINIA.

AUTOMATIC CUT-OFF FOR GAS OR VAPOR BURNERS.

S'EECIFIGATION forming part of Letters Patent N o. 617,271, dated January 3, 1899.

A Application filed November 24,1897. Serial No. 659,660. (No modell) T all whom t may con/cern.'

Beit known that I, CLIFFORD BARGAMIN, a citizen of the United States, residing at Newport News,in the county of Warwick and State of Virginia, have invented certain new and.

useful Improvements in Automatic Out-Offs for Gas or Vapor Burners; and I do hereby 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 appertains to make and use the same.

This invention relates to a novel gasolenefurnace provided with automatic cut-off mechanism which when the invention is embodied in a plumbers furnace or the like will automatically cut off the supply of liquid fuel to the burner when the metal-pot is removed.

In order that the invention may be more clearly understood, it maybe well to state that 'ordinarily' where gasolene is employed as a Y fuel for heating metal-pots, soldering-irons,

or similar devices such use is accompanied by an incidental Waste, due to the fact that care is not taken to cut off the supply, and the furnace is left blazing while the artisan manipulates the metal-pot or iron.

The primary object of this invention is to so construct the burner that the fuel-supply will be cut off as soon as the element to be heated. is removed.

The invention further consists in providing Y a valve-casing in the feed-pipe of the burner at a point intermediate of the burner proper and the main valve, and, further, in providing mechanism for automatically actuating the valve in the first-named valve-casing to permit the passage of liquid fuel to the burner when the pot or iron is in place and for closing the valve and thereby cutting off the supply when either of the devices named is removed.

The invention consists, further, in certain novel details of construction and arrangement, which will be hereinafter described and claimed.

Referring to the drawings, Figure 1 is an elevation, partly in section, of a plumbers furnace` provided with my automatic cut-off. Fig. 2 is a sectional view, on a somewhat enlarged scale, of the automatic valve-casing, a portion of the feedpipe, and the valve-actu ating mechanism. Fig. 3 is a perspective view of a gasolene-stove provided with my invention, and Fig. t is a detail view of the automatic cut-off applied to the stove illustrated in Fig. 3.

-Referrin g to the numerals on the drawings, l indicates a furnace-base of any suitable or ordinary construction provided with a cock 2, through which air under pressure may be supplied to the furnace, or, more properly speaking, to the reservoir, and 3 indicates the cap closing the supply-orice, through which the gasolene is designed to be fed, as usual.

4t indicates the pot-stand, consisting of a baseeplate 5, provided with a central flameopening 6, tted with a suitable grating 7, upon which the metal-pot 3 is designed in practice to rest. The base-plate 5 is supported by a suitable number of standards 9, supported by the top plate of the fu rnacebase, and a suitable sheetemetal casing 11,0f slightly largerdiameter than the diameter of the metalpot, extends upwardly from the edges of the plate 5 and is designed to confine the iiame issuing from the burner to be described between the metal-pot and casing in order to economize the heat generated thereby.

12 indicates the burner feed-pipe, extending upwardly from the furnace and provided immediately thereabove with a controllingvalve 13, above which is located the valvecasing 14 of my automatic cut-off valve 15, constructed and arranged in the manner to be described. The feed-pipe 12 extends nearly 'to the plate 5 of the pot-stand, where it connects withthe upper end of the burner-coil 16, extending downwardly into what may be termed a fuel-cup 17 and terminating in a perforated burner-tube 18, extending diametrically across the bottom of the cup, which latter is preferably supported by a number of pendants 19, secured at their upper extremities to the plate 5.

The device thus far described, with the exception of the valve-casing 14, is of ordinary construction, and I shall now proceed to a description of the automatic cut-off mechanism designed to be controlled by the metal pot or soldering-iron placed within the potcasing for heating.

The valve-casing la cf the automatic cut.- off valve is provided with a circuitous passage in order to form a vertical valve-seat IOO 21 for the reception of the horizontally-arranged cut off valve. 15 referred to. The valve 15 is provided with an elongated stem extending through a packing-gland 22, provided with the usual screw-cap 23 and preferably lined with asbestos or similar material, which will serve as a packing for the stem and which will be practicably indestructible under the action of the liquid fuel employed. In order to provide against the escape of the fuel or any accumulated gases from the feedpipe through the gland 22, I prefer to incase the latter within a gland-casing 24, provided with a screw cap or dome 25, which screws upon the end of the casing and retains in place a rubber or other suitable disk Ksecured axially to the valve-stem by means of a pair of diminutive nuts 27, screwed upon the stem upon opposite sides of said disk. In this manner an absolutely liquid and gas tight connection is formed, and in addition to this function the disk 2G by reason of its resiliency will serve to assist in reseating the valve when it has been opened in a manner which will be presently made apparent.

2S indicates a guide-lug projecting from the valve 21 opposite the stem 15 and which is designed to move within a guide-recess 29, formed in a screw-cap 30, screwed into the side of the valve-casing opposite the gland.

31 indicates a horizontal bracket secured in any suitable manner at one end to the feedpipe immediately above the valve-casing 14, and to the opposite extremity, as shown in Figs. 1 and 2, there is pivoted a bell-crank lever 32, provided at one extremity with an antifriction-roller 33, which bears against a l valve-actuating spring 34, depending from the bracket 31 and connected in any suitable manner to the outer extremity of the valvestem 15. The lever 32 is pivotally connected at its opposite end to an upwardly-extending rod 35, passing through an aperture 36 provided for that purpose in the base-plate 5, and carries upon its upper extremity a plate 37, upon which the metal-pot or solderingiron is designed to rest.

Inasmuch as it is desired that the automatic cut-off should not be complete, but should permitjust suflicient fuel to pass to the burner to keep the same lighted, a small auxiliary port 38 (shown in dotted lines, Figs. 2 and 4) may be provided in the valve for the purpose of allowing the required quantity of gasolene to pass to the burner when the valve is in a closed position. Under normal conditions the spring 34 and the resilient disk 26 will retain the Valve in the closed position, as illustrated in Fig. 2 of the drawings, and the plate 37 will be elevated slightly above the base-plate 5 of the pot-casing.

Supposing now that it is desired to heat the metal-pot, the latter is placed within the casing and upon the plate 37,which is depressed, causing the lever 32 to be swung upon its pivot and to force the spring 34 in a direction to open the cut-off valve. A sufficient supply of fuel to produce the necessary flame will thus be allowed to pass through the valve-casing under the pressure of oil contained in the reservoir; but as soon as the metal-pot or iron has been removed from the plate 27 the combined action of the spring 34 and the rubber disk 26 will be exerted to close the valve and elevate the plate.

It will be understood, of course, that the manner of igniting the device is the same as is ordinarily followed, the drip-oil within the cup being initially ignited to produce the vaporization of the gasolene as it passes through the coil, the .gas finally escaping from the burner and being ignited to form the blast, which is directed upwardly through the grating in the plate 5 and around the walls of the metal-pot.

It will thus beseen that I have invented a novel, inexpensive, and efficient device which may be applied to fuel-burners of any construction and which when so applied will effect the automatic regulation of the fuel-supply.

IVhile the present embodiment of my invention appears at this time to be preferable, I do not vdesire to limit myself to theV structural details illustrated and described, but reserve the right to change, modify, or vary them at will within the scope of the protection claimed.

I'Iaving thus described the invention, what is claimed as new is- In an automatic cut-off mechanism of the character described, the combination with a valve-casing,of a horizontally-arman ged automatic cut-off valve therein, provided with an auxiliary port and with an elongated stem, a gland surrounding the stem and provided with an asbestos packing, a gland-casing inclosing the gland, a resilient disk adj ustably secured upon the valve-stem, a cap for the gland-casing designed to close the end thereof and to secure the disk, a spring connected to the said valve-stem beyond the casing, a bell-crank lever operatively connected with the spring, an upwardly-extending rod pivoted to said lever, and a plate upon the extremity of the rod, substantially as specified. i

In testimony whereof I affix my signature 1n presence of two witnesses.

CLIFFORD BARGAMIN.

Witnesses:

A. G. FIFER, A. C. BARGAMIN.

Images