US1619516A - Stubble burner - Google Patents

Description

Patented Mar. 1, 1927.

UNITED STATES PATENT OFFICE. T

STUBBLE BURNER.

Application filed February This invention relates to improvements in stubble burners and the objects of the invention are to provide a machine of this character, of light and eflicientconstruction, for burning stubble while also killing 111- sects and destroying weed seeds.

Still further objects are the provision of an improved machine of this character in which the several parts will more satisfactorily perform. the various functions re quired of them and in which jets of flame from opposite directions, covering the same ground, are provided.

With the foregoing and other objects in View, the invention consists essentially in the novel construction and arrangement of parts as described in the present specification and illustrated by the accompanying drawings that form part of the same.

Referring now to the drawings, in which like characters of reference indicate corresponding parts in each figure,

Figure 1 is an enlarged perspective view of the end of the machine. showing the burner pipes.

Figure 2 is a sectional detail of Figure 1.

Figure 3 is a section on the line 66 of Figure 2.

Figure 4 is an enlarged detail of the burner pipe supports.

Figure 5 is a detail of the hinge for the runners.

Figure 6 is an enlarged sectional detail of the counter-sunk apertures in the burner The device is designed to form part of a weed burner of the type in which the burning elements are mounted on a suitable frame formed as a truck or having wheels by which it may be drawn over the ground which frame carries the usual fuel supply tank and valved conduits by which the burners are supplied with fuel from the said tank. The drawings show only the portion of the machine dealing with the burners and their connection to the frame.

Referring to the drawings, 21 indicates one of the branch supply pipesthrough which the fuel is supplied to transverse pipes 23 from which feed pipes 25 lead to the burner pipes 27. The feed pipes 25 are preferably provided with a plurality of needle point valves 26. The burner pipes 27 extend parallel to each other and lie substantially parallel to the direction of motion of the weed burner. As illustrated, the

16, 1924. Serial No. 693,303.

upper portion of each portion is imperforate, extends rearwardly, is then bent through 180, and extends forwardly, the lower forwardly extending portion being provided with the burner orifices.

The valves 26 may be conveniently operated from a distance by means of rods 28, one of which is provided for each valve.

Referring now to theburner pipes 27 and as illustrated in Figure 1, these are provided w-ithfia plurality of restricted holes 29 on each side and in staggered relationship to one another, so that when the burner is in operation the ground is completely covered between the pipes With jets -,of flame.

If desired, instead of bored openings as here shown, suitable nozzles may be used, of any well known construction.

To ensure correct spacing and an even level, the burner pipes 27 are supported in the apex of an angle iron 30, as illustrated in Figure 4, suspended from a suitable cross piece or brace 31, through which the direct feed pipes 25 extend. As illustrated, there is a second of these braces, spaced from the brace 31 and parallel therewith, the whole being supported on runner members 32, in turn hingedly connected at 33 to a rod 34. connected in any suitable manner to the frame of the machine and retained at an even distance therefrom by brackets 35.

To concentrate the flame from the burner pipes 27 and to prevent it being affected by wind, a sheet steel cover 36 is provided for each section of the burner system and is supported from the runners 32 by angle irons 37 and brackets 38. The front part of this cover is preferably hinged at 39 to permit examination of the flames during the operation of the machine.

The central part of the main frame may also be covered by sheet steel to form a platform for the purpose of assisting the operator to move about on the machine, while being protected from the flames.

The runner member 32 and the burner elements 27 are designed to be raised and lowered by suitable means operable from adjacent to the drivers seat, which means may include a chain device flexibly connected at 4st to the angle iron 37.

Before commencing operations, the burner pipes 27 are heated to vaporize the fuel and in this form it is burned, the heat generated during the burning being suflicient to con- 6 shown, or by any other suitable pressure means.

It should also be noted that half the pipe system may be operated at a time or both halves may be operated simultaneously.

The main frame may be constructed of angle iron or any suitable material, put to gether in any suitable way.

As many changes could be made in the above construction. and many apparently widely different embodiments of my invention, within the scope of the claims, con structed without departing from the spirit or scope thereof, it is intendedthat all matter contained in the accompanying specification and drawings shall be interpreted as illustrative and not in a limiting sense.

What I claim as my invention 5:

1. A device of the character described comprising a frame, a plurality of spaced. parallel runners provided at the forward ends with upwardly extending portions I hinged to said frame to provide for vertical pipes supported by said runners and cross bars, each pipe being bent into U-form and arranged to provide a lower burner portion lying on one of said runners and an upper retort portion passing through openings I formed in said cross bars and lying directly above said burner portion, the latter being sealed at the end opposite that connected to the retort portion and beingprovided with outlet openings at each side located above the underlying supporting runner,

2. A structure as recited in claim 1 including a bracket extending across and supported by the upwardly extending portions of the runners and a cover member resting on the cross bars and hinged at one edge to said bracketQ t i 3. A structure as-recited "in claim .1 in which the outlet openings oneach side of each burner are staggered with respect to each other. i V i i In witness whereof I have hereuntoset my hand.

CHARLES CLARENCE HOWELL. i F

Images