US2120078A - Torch - Google Patents

Description

June 7, 1938. H. scHRADER TORCH Filed April 10, 1936 Henry. Scfzr'ader Y INVENTOR.

BY @dwz/c HIS ATTORNEY.

Patented June 7, 1.938

UNITED STATES PATENTY OFFICE TORCH Henry Schrader, Chicago, Ill.

Application April 10, 1936, Serial No. 73,661

3 claims. (Grits- 32) A Projecting into the lower end of the blow tube This invention relates to certain novel improvements in torches, and has for its principal object the provision of an improved structure of this character 'which will be highly eiiicient in use and economical in manufacture.

Among the several objects of the invention is to provide a torch, of the character more fully hereinafter described and claimed, which will project a name of steady, uniform and intense heat, and which may be used for sundry purposes.

Another object of the invention is the provision of'a torch of the character hereinafter described and claimed wherein a pilot or starting burner is utilized to vaporize the fuel within the l torch to create a vapor pressure which when released causes a continuous and forced flow of vaporillellip a burner tip located centrally within a blow tube centrally located within the fuel tank, and which blow tube when heated will upon extinction of the pilot burner vaporize the fuel and cause a continuous and uninterrupted fuel supply to the burner tip to the extent of producing a fuel flow of steady, uniform and intense heat.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of parts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing showing the preferred form of construction, and inwhich:

Fig. l is a vertical cross-sectional detail View of the invention;

Fig. 2 is a sectional detail view of reduced size of the same taken substantially on line 2-2 of Fig. 1;

Fig. 3 is a top plan view of the invention; and

Fig. 4 is a bottom plan view of the same.

Many different forms of construction may be utilized to accomplish the several objects of the invention. I, therefore, have illustrated in the drawing the preferred form of construction, and in which drawing a torch is indicated at ID. This torch I comprises a fuel tank I I, one wall of which is provided with an opening I2. On the tank II is a suitable handle I3 facilitating manipulation of the torch in use. y

The bottom. wall of the tank is indicated at I4, and preferably, though not necessarily, formed as an integral part thereof is a blow tube I5 including a nozzle end I6 angled to project through the opening I2. The blow tube I5 is preferably located centrally within the tank so as to provide an unobstructed passage for heat through the center of the tank through the tube I5.

l''is a burner tip Il having connection with a supply pipe I 8 connected as at I9 to a branch supply pipe 20. This branch supply pipe 2li` extends upwardly through a tube 2l within the tank I I, as shown. 'Ihe upper end of the pipe 20 isuconnected, as at 22, to a valve 23 including a -valve head and seat 24 and 25, respectively, and a handle 26. If desired the tip part Il may be omitted and the end of the pipe section i8 may be constricted or dimensioned to provide th burner.v

Fuel is admitted to the tank II through an opening 2l normally closed by means of a removable plug 23. The base of the tank is in the form of an outwardly flaring skirt 29 having a series of air ports 30 formed therein.

To complete the invention, I provide a starting burner 3l having a plurality of resilient fingers 32 engageable in the lower end portion of the blow tube I5 for supporting the burner 3l in position.

To operate the torch, a starting fuel is deposited in the burner 3I and ignited. The flame therefrom upon passing upwardly through the blow tube I5, heats the same and vaporizes the fuel within the tank. As the fuel in the tank vaporizes, a pressure is created causing the vaporized fuel under forced pressure to escape through the pipe 20, I8, upon opening of the valve 23. The vaporized fuel under pressure will pass to the burner tip Il, and upon exiting therefrom will be ignited by the ame from the pilot or starting burner 3I.

The ignited fuel escaping from the burner tip under pressure and the heat therefrom will create an upward draft through the blow tube, and this forces and spreads the fuel upwardly through the nozzle I6 in steady and uniform flow and intense heat.

The several parts of the invention will be so constructed and connected together in a manner such as will assure safety.

The torch when once started acts with regularity free of risk of explosion, and with a single flame without any secondary source of heat. The torch will operate in any position, whether upright, inclined, horizontal or even inverted. n

The burner constructed in accordance with the ldisclosures herein is extremely efficient and is applicable to all of the uses to which the' ordinary blow torch is applied. The emciency of

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