US1960768A - Gas extension firer - Google Patents

Description

May 29, 1934- w. ALEXANDRA 1,960,768

GAS EXTENSION FIBER Filed May 25. 1932 Z .Z 17 43 fg 5] j] Patented May 29, 1934 UNITED STATES ATENT OFFICE 1 Claim.

The invention relates to a gas extension iirer, and more particularly to a device which may be held in the hand and which may be operated with various forms and sizes of burner ttingsv toperforrn the purposes of the gas Iirer.

The primary object of the invention is to enable the user to place the. flame issuing from the end of the iirer at the location desired, however distant and remote it may be from the source of gas supply.

The invention may be used for many purposes in connection with ring, after being connected with the source of gas supply by means of a flexible extension, such as a rubber hose, as in igniting stoves, furnaces or other burners, including those for boilers, fuel of all kinds, for burning feathers from fowl, in use as a torch, for brazing, removing paint or varnish and for various industrial purposes. There are many uses for the device to supersede the use of matches or other means of iiring.

An important object of the invention is to have air and gas passages of various sizes Withinthe hand tool with contracting, tapering and con- 5- verging walls so that the flame which issues forth at the ends of the various forms of extensions of the tool, as a result of the proper mixture and commingling of the air and gas, will have a blue iiame instead of a yellow iiame and will be effective for the purposes desired.

It has been found in experimentation in constructing gas extension iirers, that the form and size of the air and gas passages are important, and it was not until the construction shown and illustrated in this application containing the diminishing gas and air passages, was made, that a flame of sufficient volume, heat value and intensity was secured from the device.

Another of the objects of the invention is to enable the user to insert different forms and lengths of extension burners in the tool depending on the character of Work which is to be done.

A further object ofthe invention is to construct the various parts of the device so that they may be readily disengaged for purposes of repair and cleaning.

The invention will be explained and more readily understood when read in conjunction j with the accompanying drawing which illustrates the gas extension rer together with various embodiments of the extensions which are fitted to the tool as desired, it being obvious that various changes and modifications in the struc- 551 ture may be made without departing from the spirit of the invention as expressed'in thev pended claim forming a part hereof.

In the drawing: Figure 1 is an elevational view of the gas iirer connected to a gas supply pipe and showing one form of extension burner.

Figure 2 is a top plan View of part of the extension burner shown in Figure 1.

Figure 3 is a cross sectional View of the gas' firer of Figure 1 illustrating the interior gas pipes and a diiierent form of extension burner, the burner also being shown in Figures 6 and 7.

Figurel is a cross sectional view of the tool on the line 4 4 of Figure 3.

Figure 5 is a cross sectional on the line 5 5. l

Figure 6 illustrates a form of extension burnerv which may be attached to the tool.

Figure 7 is an end view of the burner of Figure 6.

Figure 8 illustrates a different form of burner which may be used with the tool. y

Figure 9 illustrates still another form of burner which may be attached to the tool and l Figure 10 is an end View of the burner of Figure 9. I

The gas vextension firer of the invention is formed with the casing 15 which has an enlarged grip portion 16 and the reduced pointer portion vview of the tool 17. The enlarged grip portion is provided with the plate 18 which is fastened by means of the screws 19 and 20, which pass into the enlarged ends 21 and 22 of the grip portion.

The gas iirer'is provided with a cone shaped` gas pipe 23 which extends into the interior of the grip portion 16 and is secured in the plate 18; The pipe 23 is connected with the pipe 24 which connects with the source of gas supply, through theinedium of the gas connector 25 which has the corrugated connecting end 26, and the valve 2 with its valve handle 28.

The gas pipe 23 has connected to' it a gas pipe' 29 having an end 30 bent to receive anaddi-1 tional gas pipe 31. This last named 'gas pipe 31 has a cone shaped portion 32 and an end or nozzle portion 33.

The gas-connector 25 is screw threaded/into the gas pipe 23, which is suitably tted in the plate 18. The gas pipe 23 being cone shaped, provides a cone shaped gas passage 34, the reduced end of which connects with the passage 35 of the bent gas pipe 29. The passage 35 connects with the passage 36, the cone shaped passage 37 and the passage 38, respectively, of the gas pipe numbered 31, 32 and 33.

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The inner end of the gas pipe 23 has interior screw threads to receive the pipe 29 which last mentioned pipe has its lower end provided with exterior screw threads. The pipe 29 has at its bent end interior screw threads to receive the gas pipe 31 which is provided with exterior screw threads. It will be seen therefore that the various pipes within the gas rer contract and taper and have diminishing cross section; the pipe 23 having the substantially cone shaped passage 34, the pipe 29 having the passage 35 of smaller cross section than the passage 34, and the pipe 31 having the smaller passage 36, the cone shaped passage 37 and the further diminished passage 38 extending to the tip 39 of the nozzle portion 33.

The gas rer may be used with any form or size of burner extension as has been stated. Referring to Figure 3, the extension 40 is a cylindrical tube which has exterior screw threads at each of its ends. The T shaped burner 4l is screw threadedly secured at the outer end of the tube 40. The T shaped burner is provided with outlets 42.

A sleeve nut 43 having screw threads on its interior surface and having exterior screw threads on the exterior of the sleeve portion is screw threaded into the end of the pointer portion 17 of the gas firer. The tube 4d is screw threaded into the sleeve nut 43. It will thus be seen that after the sleeve nut 43 has been secured in place in the end of the gas rer that the tube 40 with its burner may be secured in place.

It will also be seen t-hatin case it is desired at any time to use a different form of burner the tube 40 and the burner 41 may be removed from the sleeve nut 43 and the other burners, as desired, may be screw threaded into position in the sleeve nut 43.

The grip portion 16 is hollow and has a relatively large interior passage 44 and smaller passage 45. A still smaller passage 46 is in the inner end of the tube 40 surrounding the end portion of the gas pipe portion 33. These passages 44, 45 and 46 receive air from the atmosphere through the elongated openings 47 and 48 in the plate 18.

The air passing through the elongated openings 47 and 48 passes into the passages 44, 45 and 46 into the mixing chamber 49 in the tube 40. The air mixes and commingles with the gas which ows through the pipes 24, 25, 23, 29 and 31, from the tip 39, in the mixing chamber 49 and the mixing chamber 50 of the burner 41, and upon ignition thereof the flames pass through the burner openings 42. The flow of the gas in the tool can readily be controlled by the valve handle 28 immediately adjacent the grip portion of the gas firer.

In many cases inA using a gas firer it is necessary to have a long burner extension and such a burner extension is shown in the elongated tube 51, in Figure 1, having a plurality of burner holes 52. In some cases it is desirable to have a more wide spread flame than can be secured from the burner of Figure 1, in that case a burner such as is shown in Figure 8, may be used.

The extension burner of Figure 8 is shown in the form of an elliptical structure having the' curved portions 53 and 54 connected to the tube 55 which is secured to the tube 56 which may be of any desired length. The tube 56 is screw threaded into the sleeve nut 43 which in turn is screw threaded into the end of the pointer 17 of the gas iirer. The curved arms 53 and 54 are provided with a plurality of burner openings 57.

Another form of extension burner is shown in Figures 9 and 10. The purpose of the extension burner of these iigures is to have the flame pass out through the burner openings 58 in the end surface of the extension burner.

The extension burner is provided with the curved arms 59 and 60 having the extensions 61 and 62 respectively. The curved arms 59 and 60 connect with the tube 63 which may be connected to the tube 56. The tube 63 is provided with the handles 64 and 65 which may be used in turning the extension burner.

A hanger 66 with an aperture 67 is formed at the upper corner of the gas iirer which may be hung on a hook when not in use.

Not only is the extension containing the mixing chamber and the burner end capable of separation from the gas rer but the gas pipes 23, 29 and 31 may be removed from the chambers of the portions 16 and 17. After the extension 40 has been removed the pipe 31, 32 and 33 may be withdrawn with a suitable pair of pliers from the nozzle end of the pointer portion 17, and the pipes 25, 23 and 29 may be readily removed with the plate 18 for the purpose of cleaning or repair and may be readily replaced for use.

VI-laving thus described the invention what I claim and desire to secure by Letters Patent is: In a gas extension iirer, the combination of an outer tubular member, providing an air passage, an inner tubular member of three sections providing a gas passage, the outer member comprising a long leg and a short leg, the long leg serving as a handle or grip portion, the legs being at right angles to each other, the long leg being of greater cross-section than the short leg, said three sections comprising inlet, outlet and intermediate pipes, the three sections being screw threadedly connected to each other, the inlet and intermediate pipes being secured in the long leg, and the outlet pipe being secured in the short leg, the lower end 'of said long leg being enlarged, a perforated plate secured to said enlarged end, certain perforations in said plate being provided for the entry of air and fastening means, and another perforation for the reception of Ya gas inlet pipe registering with the inner member, said sectional inlet pipe being relatively short and having converging walls, the end portion of said intermediate pipe being turned at right angles but only for a relatively short distance to permit said two pipes to be insertedthrough the opening in the enlarged end, and the third pipe terminating in a nozzle, said third pipe being insertable into and removable from the opening in the short leg, anut secured in the end of the short leg, said nut being screw threaded exteriorly and interiorly, and a burner tube screw threaded into said nut. Y

WALTER ALEXANDRA.

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