US 1982192 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
Nov. 27, 1934. E. F. BAUMGARTEN 1,932,192
FIRE EXTINGUISHER Filed March'26, i954 Y /fl/ INVENTOR 52204222 fiaumy ten BY Q) FATTORNEYV Patented Nov. 27, 1934 UNITED STATES PATENT OFFICE 3 Claims.
The object of this invention is to provide an apparatus or machine for blowing sand or dirt on fires, more especially forest fires, to put out the fire, the machine being capable of use more especially where water is not available.
These and other objects of the invention will be illustrated in the drawing, described in the specification and pointed out in the claims at the end thereof.
In the drawing:
Figure 1 is a side elevation of the machine and the hose and nozzle therefor.
Figure 2 is a vertical longitudinal section through the machine on the line 2a:2.r of Figure 3.
Figure 3 is a top plan view of the machine with the sand hopper and top cover plate omitted.
In the drawing like reference numerals indicate like parts.
In the drawing reference numeral 1 indicates a trunk or fan chamber, and 2 indicates a duct leading therefrom. Inside of the fan chamber is provided a rotary fan 3 mounted on the shaft 4, which shaft is supported in and rotates in upright brackets 5 and 6. In the side of the fan casing surrounding the shaft 4 is the intake opening '7, through which air is drawn into the fan chamber, which air is expelled in a blast along the trunk 2 by the rotation of the fan.
The top of the fan chamber and trunk is covered by the metal plate 8, which has suitable cleats or brackets 9 on each side thereof which overlap the sides of the fan casing and are fastened thereto by screws or in any other suitable manner.
A strip of rubber packing 8a is provided between the cover plate and the sides of the trunk. The forward end of the trunk is supported by brackets 10, between which is placed the block 11.
On top of the plate 8 is provided the sand hopper 12, the lower end of which rests directly on the plate 8 and is fastened thereto, and the upper end of which is supported by the uprights 13.
As shown in Figure 2, the bottom 14 of this hopper slopes down and forward, and at its forward end the hopper is provided with an opening 15 that registers with an opening 16 in the metal plate 8 forming the top of the fan casing or trunk, so that the sand is fed in a stream which falls directly across the blast of air, by which it is carried forward and out.
The trunk is provided on the inside with converging sides, and at the end the top and bottom is provided with beveled plates to reduce the open- ,55 ing at the delivery end.
On the sand hopper are provided parallel uprights 16a and 17, on which are mounted suitable guides 18 in which slides a valve 19. To this valve is attached a cable 20 which passes up over a drum or pulley 21. The cable then passes down to a shaft 22 which is mounted to rotate in the uprights 16a and 17. On the outer end of this shaft are provided a crank and handle 23 by which it can be turned to lift the valve. A ratchet wheel 24 is provided which is integral with the shaft. A pawl 25 is provided, held in engagement with the ratchet wheel by the spring 26 so as to prevent backward movement of the shaft, thus holding the valve 19 open in the desired position.
Leading forward from the trunk is a tube 30, on the end of which is a flexible hose 31 with a nozzle 32, by which the blast of air and sand is directed at the fire in any direction.
All of this apparatus is mounted on a base 40.
In operation, the shaft 4 and fan 3 is rotated at high speed, causing a blast of air to be blown through the trunkand pipeline and nozzle, and the sand is fed from the hopper 12 at the desired rate, and the sand and air are blown on the fire for the purpose of putting it out. i
1. A fire extinguisher comprising a fan chamber, a fan in said chamber, a trunk leading out therefrom adapted to carry an air blast, a metal plate covering the top of said trunk and constituting a part of it, said plate having cleats thereon extending down over the side of the trunk.
2. A fire extinguisher comprising a fan chamber, a fan in said chamber, a trunk leading out therefrom adapted to carry an air blast, a metal plate covering the top of said trunk and constituting a part of it, said plate having cleats thereon extending down over the side of the trunk, a hopper on top of said trunk, said hopper and said trunk having connecting openings through which sand can pass into the trunk from said hopper and be blown out therefrom by a blast of air said trunk having a contracted circular opening at the delivery end thereof.
3. A fire extinguisher comprising a fan chamber, a fan in said chamber, a trunk leading out therefrom adapted to carry an air blast, a metal plate covering the top of said trunk and constituting a part of it, said plate having cleats thereon extending down over the side of the trunk, 1 packing between said plate and the sides of said trunk.
EDWARD F. BAUMGARTEN.