US2301051A

US2301051A - Fire extinguisher

Info

Publication number: US2301051A
Application number: US282031A
Authority: US
Inventors: James A King
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-06-30
Filing date: 1939-06-30
Publication date: 1942-11-03
Anticipated expiration: 1959-11-03

Description

Nov. 3, 1942.

FIRE EkTINGUISHER J. A. KING 2,301,051

Filed June 50, 1939 #vz/s 773 JAMES A K\HG Patented Nov. 3, 1942 l UNITED STATES PATENT QFFICE 2,301,051 Fran EXTINGUESHER James A. King, Portland, Oreg. Application June 30, 1939, Serial No. 282,031

3 Claims.

This invention relates generally to containers and projectors for liquids, and particularly to a fire extinguisher.

The main object of this invention is to construct an inexpensive form of fire extinguisher for use in conjunction with a fire-smothering fluid.

The second objectis to construct a fire extinguisher from which the fluid may be pumped or poured.

The third object is to construct a fire extinguisher by means of which the stream may be easily and accurately controlled.

The fourth object is to construct an extinguisher of the class described having a quick action pump which will deliver a full force stream with the first stroke of the pump.

The fifth object is to construct an extinguisher oi the class described which will be very easy to operate and having a free acting pump which can be made to deliver its entire contents in a very short space of time.

The sixth object is to construct an extinguisher of the class described in a manner to make its cost so low that it will be easily available in many places where its use would otherwise be prohibitive due to the relatively high price of similar contrivances for this purpose.

The seventh object is to construct a device of the class described which will be subject to manufacture by die casting methods and which will not be easily rendered inoperative by rough usage.

These and other objects are accomplished in the mannner set forth in the following specification as illustrated in the accompanying drawing, in Which:

ig. l is a plan of the device.

Fig. 2 is a side elevation of the device.

Fig. 3 is an enlarged broken section taken along the line 3-3 in Fig. 2.

Fig. 4 is a broken transverse section taken along the line 4 4 in Fig. 3.

Fig. 5 is a transverse section taken along the line 5-5 in Fig. 2.

Fig. 6 is a fragmentary side elevation of the closure for the container showing its attached parts in an inoperative position.

Similar numerals refer to similar parts throughout the several views.

Referring in detail to the drawing there is shown a container H! on whose threaded neck H is mounted the screw cap 12 which is provided with the wings l3 which are diametrically opposite and which have the cut-away portions [4 to receive the two wire latches l5 which eX'- tend upwardly from the bracket It which is secured to the horizontal channel members I! which in turn are secured to the support it by means of the screws l9.

The bracket Iii has a horizontal portion which is provided with the upturned arms 2| which serve to confine the lowermost end 22 of the container It).

The screw cap I2 is provided with a gasket 23 .of any suitable material. This gasket engages the outermost end of the neck H. The cap I2 is provided with a central shank 26 on whose reduced portion 25 is securely fitted the tubular pump cylinder 26 having a breather opening 21 near the end 23 of the reduced portion 25. The boss 23 projects from the end 28 and serves as a stop. for the piston 30 which has a cup-shaped pump leather 3| on its under side. In the cup 3i is a close fitting plug 32. A tubular pump rod 3-3 passes through the piston 38 and the plug 32, both of which are pressed thereon! and confine the cup 34 between same, the plug 32 being of a sufiicient diameter to hold the cup 31 constantly in engagement with the pump cylinder 26.

Near the upper end of the pump rod 33 is placed a resilient washer 34 of rubber or other suitable material which is held in place by the nozzle handle 35 whose threaded opening 36 is screwed on to the threaded end 31 of the pump rod 33. The neck 38 of the handle 35 is provided with a somewhat circular flange 39 whose cut-away portions 49 are adapted to freely receive the inturned ends 4| of the arms 42 which project from the end of the cap 12.

The flange 39 is provided with the holes 43 which receive the points 44 of the ends 4! when the flange 3-9 is moved close enough to the cap end 45 to sufiiciently compress the resilient washer 34 to enable the handle 35 to be rotated to the position shown in Fig. 6.

Within the neck 38 is formed the chamber 46 at whose closed end 4! are formed the stop lugs 48 between which and the end 31 of the pump rod 33 is disposed a ball check 49 which is adapted to close the passageway 54} of the rod 33 when the handle 35 is pulled outwardly.

The threaded end 5| of the handle 35 is provided with opening 52 which communicates with the chamber 46. The opening 52 is provided with a counterhore 53 at its outer end for the purpose of shortening the core requirements for the opening 52 and for preventing injury to the outlet of the opening 52 which would otherwise interfere with the shape of the stream 54 formed thereby.

A cap 55 is provided for the threaded end 5| when the extinguisher is not in use in order to insure against any possible evaporation as well as to prevent the outlet 52 from being obstructed by dust or other foreign matter.

Into the lowermost end'of the pump cylinder 26 is pressed a cylindrical valve body 55 whose end 51 is provided with an inlet opening 58 as well as the projecting lugs 59 whose purpose it is to prevent the opening 58 from being closed by a contact with the bottom 2-2.

in the body 56 is placed a ball check 80 which is held in place by a perforated radiator 5| which is pressed into the uppermost end of the body 56.

The operation of the device is as follows:

The cap L2 is first removed by rotating the wings l3 and withdrawing the pump cylinder from the container i0, after which the liquid 62, such as carbontetrachloride or other flame smothering fluid, may be inserted in the container l5 and the pump cylinder 26 restored to its former position, being certain that the cap H is securely in place and the gasket 23 is properly sealing the union between the cap I2 and the container Ill. The handle is now turned to the position shown in Fig. 6 with the cap in place.

Should it be desired to expel the liquid 62 from the container 10, the handle 35 is turned to the position shown in Fig. 3, the cap 55 having been removed from the neck 5 I, and by a simple pumping action causes the liquid to be first drawn into the chamber 63 on the outward stroke of the handle 35 and then on the return stroke is forced through the passageway 50 in the rod 33 and thence out of the opening 52 in the form of a stream or spray 54, this action being continuous as long as there is liquid in the container [0 and the pumping action is continued.

It can be seen that owing to the fact that the plug 3'2 fits closely against the cup 3| that there is a positive pumping action in both directions is provided an exceedingly sufficient and reliable form of fire extinguisher which will be simple to manufacture and whose cost is sufiiciently low to enable it to be available for anyone interested in the use of this device.

It is desirable to terminate the latches l5 in .t

the form of rings or eyes across which a seal may 'be placed to detect tampering or a fastening tie or strap may be placed to prevent the accidental dislodgment of the exterior under shock.

It will be noted that the washer '34, which is preferably of rubber, is thoroughly ventilated in order that any of the liquid which may touch the washer and be absorbed thereby may be easily evaporated, it being understood that the action of the tetrachloride on the rubber is to soften and disintegrate same during saturation but the rubber returns to its former condition when the tetrachloride is evaporated.

It will also be noted that owing to the shape of the parts, there is no place for the accumulation of liquid around the washer 34 or any of the parts, there being complete drainage away from the central portion of the device.

fIhe purpose of forming the cross members [1 into channels is to permit the heads of the screws IS to be out of contact with the container 10.

I claim:

1. A fire extinguisher having in combination a container, a pump cylinder mounted in said container having a foot valve on the inner end of same, a two-way piston mounted in said cylinder, a tubular pump rod extending through said piston, a check valve at the outer end of said pump rod. adapted to close on an outward movement thereof, a pump handle on said rod adapted to reciprocate and rotate said rod, a circular flange forming a part of said handle ha ing cutout portions on the rim thereof and having holes formed therein, inturned arms attached to said pump cylinder adapted to pass through the cutout portions of said flange or to engage the outer side thereof, the inturned arms having latching projections formed thereon adapted to engage the flange holes and a resilient washer disposed between said flange and the outermost end of said pump cylinder adapted to seal said pump rod when in an inoperative position and to provide a resilient clamp between said flange and inturned arms.

2. A fire extinguisher having in combination a container, a cap for said container, a pump cylinder attached to said cap and projecting into said container, said pump cylinder having a check valve on the innermost end thereof, a double-action piston in said cylinder, a tubular rod attached to said piston and projecting through said cap, a handle attached to said tubular rod and having a notched circular flange incorporated therein, said handle having a valve opening therethrough communicating with said tubular rod adapted to close when said handle and rod are withdrawn, the flange on said handle having openings formed therein, a pair of inturned ends extending upwardly from said cap adapted to pass through the notches in said flange and engage the outer side thereof, said inturned ends having projections adapted to latch into the openings in said flange and a yielda-ble washer surrounding said rod between said flange and cap, said yieldable washer constituting a means for urging the projections on said cap into the openings in said flange for the purpose of latching same against rotary movement.

3. A fire extinguisher having in combination a cylindrical container, a winged screwcap for said contain-er having upwardly extending inturned arms formed thereon, each inturned arm having inturned points projecting therefrom, a tubular pump rod slidably mounted in said cap having a flanged nozzle handle on the outermost end thereof, said flanged handle having cut-out portions adapted to permit the free passage of said inturned arms, said flange having depressions formed therein adapted to receive said arm points and a resilient washer disposed between said flange and cap adapted to urge said flange toward said inturned arm points.

JAMES A. KING.