US1915446A - Oxyacetylene burner, etc. - Google Patents

Description

June 27, 1933. G. PRESSLER 1,915,446

OXYACETYLENE BURNER, ETC

Original Filed Dec. 9, 1929 wfal fresslei INVENTOR ATTORNEY Patented June 27, 1933 PATENT OFFICE GUSTAV PRESSLER, (313 DETROIT, MICHIGAN,

ASSIGNOR OI ONE-HALF TO LOUIS \T.

GILCERIST oxxacn'rnnnn BURNER, n'rc.

Application filed December 9, 1929, Serial No. 412,875. Renewed December 1, 1932.

My invention relates to control devices for welding, brazing and other apparatus and has for its general object the provision of novel means for controlling the flow to a burner, for example of oxygen and hydrogen, or acetylene gas together with means effecting ignition thereof preliminary to use.

An important object is to provide a device embodying a holder upon which the burner nozzle may be placed, this holder being of such construction that when the nozzle is in place thereon the flow of gas and an to the nozzle will be cut 05.

Another object is to provide a device of this type so constructed that when the nozze is ren'ioved from the holder therefor the flow of gas and air, or oxygen, will be automaticall y permitted.

Another object is to provide a device of this type equipped with means whereby an electrically produced spark will be caused to ignite the gas at its point of issuance from the nozzle.

A further object is to provide a devlce of this character which will be very simple and inexpensive to make, easy to assemble and use, positive in action, efficient and durable in service and a general improvement 1n the art.

With the above and other objects and advantages in view, the invention preferably consists in the details of construction and the arrangement and combination of parts to be hereinafter more fully described and claimed and illustrated in the accompanying drawing in which:

Figure 1 is a side elevation of the complete device.

Figure 2 is an elevation taken at right angles to Figure 1 with the nozzle removed.

Figure 3 is a vertical cross sectional view.

Figure 4 is a cross sectional view taken at right angles to Figure 3.

Referring more particularly to the drawing the numeral designates a casing formed of any suitable materials and of any referred or necessary dimensions and preferably, though not necessarily, of rectangular shape. The casing may be provided with insulated or insulating suspension lugs 10a for mounting purposes. Pivotally mounted at 11 upon the top of the casing 1-0 is an elongated arm 12 which preferably termi nates in a fork 13 adapted to receive and support a hose connection 14 carrying a nozzle 15 of an oxy-acetylene burner, or the like. Located within the casing 10 are valve casmgs 16 and 17 which may be identical in construction and which have leading therefrom outlet tubes communicating with outlet pipes 18 and 19, respectively. The exact construction of these valves is more or less immaterial but each valve casing is provided with a seat 20 adapted to be closed by a valve 21 carried by a stem 22. Furthermore each valve is normally urged off its seat by a spring 23 surrounding an extension 24 of the stem and slidable within a guide 25. The arm 12 is slotted at 26 for engagement with a pin 27 or a pin 28 which connects with a link 29 which is in turn connected with the stems 22 of both valves 21. It will, of course, be understood that one of the valve casings with its associated parts is provided for the fuel gas conduit and that an air or oxygen conduit is provided for the other valve casing. Connected with the connection 1 1 for the nozzle 15 are tubes 30 and 31 which lead to the respective valve casings, the exact mode'of combination being a mere detail. Naturally the two valve casings have outlets 32 which are connected with the necessary and suitable sources of supply. Up to this point it will be seen that when the nozzle 15 or its connection 14 is engaged with the fork 13 the valves 21 will be gravitationally seated for cutting off passage of fuel and air or oxygen flow.

Another important feature of the invention is the provision of means for igniting the fuel at the nozzle or burner. In carrying out my invention I provide a spark coil 33 of a conventional type suitably mounted within the casing and having one terminal connected to a conductor 33a leading to a switch 35 and the latter is electrically connected to a battery or other electrical source 34. The other terminal of the coil 33 is connected to a conductor 39 which is connected to a movable contact 37 attached to a spring the valves 21 will be seated to arm 36 by an insulating member 38. The spring arm 36 is suitably secured to one wall of the casing. A stationary contact 43 is carried by an insulating plate 44 which closes the lower portion of the casing from the. upper portion to provide an ignition cham-} ber. The stationary-contact 43' is connected to the battery or electrical source 34 by a conductor 45. The normal position of the movable contact 37 relative to the stationary contact 43 is such, that the circuit is broken even with the switch in a closed position. A rock shaft 40 is journalled in the casing and has an angularly disposed lever 41 formed integral therewith and located at one side of the casing with the free end disposed adjacent a series of openings leading to the ignition chamber. An arm 42 is carried by the rock shaft 40 and engages the spring arm 36. A stationary arm 46 is secured to the casing with the free end disposed adjacent the openings leading to the ignition chamber and the free end of the arm 41 is normally engaged with the free end of the arm 46 by the action of the spring arm 36. The normal position of the arms 41 and 46 is such that they form a V to permit the nozzle 15 to be brought between the arms 41 and 46 by a downward movement when removed from the hook 13 of the lever 12.

In operation, with the switch 35 closed the nozzle 15 is removed from the hdok 13 which frees the lever 12, automatically turning on the flow of fuel to and from the nozzle and the latter is moved downwardly between the arms 41 and 46 which rocks the shaft 40 to move the spring arm 36 carrying the movable contact 37 so that the latter will be brought closer to the stationary contact 43 and the circuit completed between said contacts and thereby form a spark or electric are within the ignition chamber. When the nozzle is brought downwardly between the arms 41 and 46, some of the fuel discharging from the nozzle will enter the ignition chamher by way of the openings and the spark between the contacts ignites the fuel causing a small explosion and that follows the flow of fuel through said openings so that the fuel discharging from the end of the nozzle becomes ignited, rendering the device ready for use. When use is no longer desired, it

is simply necessary to engage the nozzle 15 or connection 14 upon the fork 13 whereupon cut ofi' flow of the fuel and air or oxygen, thereby extinguishing the flame.

From the foregoing description and a study of the drawing it will be apparent that I have thus provided a simply constructed, inexpensive and easily operated device for the purpose specified which will efliciently perform all the functions for which it is intended.

While I have shown and described the preferred embodiment of the invention it should tion and the arrangement and combination of parts as will not departfrom the spirit of the invent-ion or the scope of the claims hereunto appended.

Having thus described. the invention, I claim:

1 A combined fuel control and igniting devicecomprismg a casing having openings, a part1t 1on-m the casing to provide control and ign tlon chambers, a fuel supply means exten mg through the control chamber, a nozzle movably connected to said supply means and located exteriorly of the casing, a control means for said supply means in the controlchamber and extending exteriorly of the casing, said nozzle adaptable 'to be supported by said control means when not in use and cause said-control means to interrupt the flow of fuel to the nozzle, movable and stationary contacts located in the ignition chamber and electrically connected to an electrical source, and an operating means connected to the movable contact and located exterior'ly ofthe casing to be engaged by the nozzle when removed from the control means to cause a spark between said contacts causin the gnition of the fuel from the nozzle and flowing into the ignition chamber by way of the openings in the casing.

2. A combined fuel control and ignition devlcecomprising a casing having openings, a partltlon in the casing to provide control and ignition chambers, a fuel supply means extending through the control chamber, a nozzle movably connected to said supply means and located exteriorly of the casing, a control means for said supply means in the control chamber and extending exteriorly of the casing, said nozzle adapted to be supported by said control means when not in use and cause saidcontrol means to interrupt the flow of fuel to the nozzle, movable and stationary contacts located in the ignition chamber and electrically connected to an electrical source, an inclined stationary arm secured at one end to the casing with its free end disposed adjacent the openings, a rock shaft journalled in the casing and having an angularly disposed portion forming a movable arm with the free end engaging the free end of the stationary arm adjacent the openings, a tension arm secured to the casing and connected to the movable contact and affected by the movement of the rock shaft for moving the movable contact toward and from the stationary contact.

In testimony whereof I afiix my si nature.

GUSTAV PRES LER.

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