US1170513A - Fire-extinguisher. - Google Patents

Description

W. T. CHARLES. FIRE LXTINGUISHER` APPLICATION FILED FEB. 24, 1914.

Patented Feb. 8, 1916.

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thev fluid container; ,ineens for insuring the suction of the fluid rom the lowest endfof naar carica WALTER T. CHARLES, F CHICAGO, ILLINOIS.

FIRE-EXTINGUIsHER.

Specification of Letters Patent.

Patented Feb. 8, 1916.

Application filed February 24, 1914. Serial lio. 820,612.

To aZZ whom it may concern.' n "Be it known that I, WALTER T. Ciminna a ycitizen of the United States of America,-

and a resident of Chicago, county of Cook, lanolState of illinois, have invented certain new and useful Improvements in Fire-Extinguishers, of which the following is a specication.

The main objects of this invention are to provide an improved form of syringe particularly adapted for use in discharging lire extinguishing Huids g .to provide an improved .arrangement of the pumping mechanism in to provide improved the container regardhf-less of the angle at which it is held when I thesuction tube which is connected to the pumping mechanism.

15 l i 'i fittings y 8` With 'an operated; to provide use; and to provide ',of the nut 9 and coacts improved means for closing the nozzle when the device is not in improved means for controlling the admission of air to the container to replace the fluid as it is forced therefrom.

' An illustrative embodiment of this inl vention is shown in the accompanying drawin s, in which` igure 1 is a sectional elevation of a iire extinguisher or syringe embodying the foregoing improvements. Fig. 2 is an enlarged fragmentary sectional detail of one end of In the construction shown inthe drawings the device comprises a cylindrical casing or container 3 the ends of which are closed by caps 4 and 5. A nozzle 6 is secured in the cap 5 and has an aperture 7 through. whichl the fluid is discharged. A fitting 8 is secured within the cap 4f by means with a fitting 10 for supporting the pumping mechanism within the container.

-y xThe umping mechanism includes a cylindex-'1113 concentrically arranged within the 3, and supported at its andJ,'0. The cylinder is provided inletl@ at its lower end, and an outcontainer l let ,13 'at itsiipper end. A piston 14 is A slidably mounted in the cylinder 11 and cont9..

nected to a piston rod 15 whichis herein Shown Vinthe form cfa tube, and which in the operation of vthe pump serves as a plunger. acting to l displace liquid from the drawn upwardly,

ends in the.

cylinder during the downward stroke of the piston.

The ttinglO is provided with a passage 16 which communicates with the cylinder inlet 12, and a passage 17 which communicates with the nozzle passage 7 by means of the tube 18 concentrically arranged within the container 3 so as to support the fitting 10Q An elbow 19 connects the passage 16 with a suction pipe 20 extending along the cylinder 11 and terminating at the ends of the container 3. A tube 21 supported at its ends in the fittings 8 and 10 extends along the opposite side of the cylinder 11 and connects the cylinder outlet 13 with the passage 17 in the latter fitting.

VValve mechanism is provided for controlling the flow of fluid from the container into the cylinder 11 and out through the passages leading to the nozzle 6. This mechanism is preferably in the form of ball valves22 and 23 respectively located in the passage 16 of the fitting 10 and in the cage 24 formed in the piston 14. The ball valves 22 and 23 are normally urged o'nto their seats by gravity or their buoyancy in the fiuid. The valve 22 permits the fluid to flow into the cylinder 11 when the piston is but prevents its return when the piston is pushed downwardly. The valve 23 permits the fluid to pass the piston into the upper part of the cylinder 11 when the piston is forced downwardly, and prevents its return as the piston is drawn upwardly. A pin 25 prevents the ball 22 from being withdrawn into the cylinder 11 in case the inlet 12 should be larger than the ball, as might be the case in larger constructions than that herein shown.

A valve 26 is located in the passage 17 in position to shut off communication through the tube 18. The stem 27 of the valve is slidably mounted in the fitting 10 and eX- tends into the cylinder 11 of the pumping mechanism in position to be engaged by the piston so that when the pumping mechanism is contracted with the piston in its lowermost position the valve 26 is shifted to close the passage through the tube 18. A head 28 4is carried by the stem 27 which closes the passage through the piston 14 when the piston is forced into engagement therewith. spring 29 normally urges the valve 26 to open communication tothe dis charge nozzle 6 when the piston is drawn upwardly in the cylinder 11.

The suction pipe 2O has the ends thereof open so as to provide ports 30 through which the fluid may be drawn into the cylinder 11. Sleeves 31 are sli-dably mounted on the ends of the pipe 20, and have attached thereto the caps 32 adapted to form closures for the ends of the pipe 20. Ports 433 areformed` in the sides of each of the sleeves 31 by means of which communication is provided with the pipe at one end when the corresponding sleeve is shifted so as lto retract the cap 3:2. lVashers 34, preferably of leather, are carried by the caps 32 and are designed to form substantially air-tight closures for the ends of the pipe 20. The sleeves 31 are connected together by an intermediate'part 35 which is herein shown in the form of an integral tube embracing the pipe 20 and having an opening 36 around the connection of th' l plug 87 screwed into a bushing 3S rigidly secured in said cap. ln the drawings the filler opening is shown in the plane of the section, but in practice it is located at one side of the tube 21 so as not to be obstructed bv the adjacent part ol the fitting 10. A disk 39-is .secured in the inner end ot' the plug 37 and is provided with apertures 40 which, in coperation with the aperture 41, are adapted to admit air into thel container 3. A valve 42 is normally urged by a spring 43 to cl ose the aperture 41. The tension of the spring 43, however, is only sutlicient to keep the opening 41 closed when the pressure in the' container 3 is equal to that ot` the atmosphere.

The piston rod or tube 15 extends outwardly through the tting 8 with which it has air-tight connection by means ol a packing ring 44. A handle 45 is secured to the piston rod by means o't` which the piston is operated. A bolt 46- is threaded into the fitting 8 and provided with a ring 47 by means ot which the device may be suspended from a nail or hook 48, An inclined cani shoulder or ledge 49 is formed on the han-` oil communication 'with the nozzle 6.

notch 51 is formed in the ledge 49 in position to register with the shoulder 50 when Athe handle 45 is turned to the position shown in the drawings, and permits the locking or unlocking of the piston through rotation of the handle. p

The operation of the device shown is as follows: Normally the device hangs on the wall suspended from a suitable nail or hook 48 and the handle 45 is turned 'so as to secure the 'valve 2G in its closed position as hereinbefore explained. When it is desired to use the device, it is removed from the hook 4S and the handle 45 is turned so as to bring the notch 51 into registration with the shoulder 50, vwhich will' allow the piston to be reciprocated in the cylinder As the piston is drawn upwardly the 14. permits thespring Q9 to retract the valve y Q6 so that the tluid may be discharged from thenozzle G. The .return movement of the piston causesthe fluid to pass through the pistoninto the upperpart of the cylinder As thepiston lnoves downwardly the tube 15 passing .into the' column of liquid,

`maintained in ythe cylinder by the valve 22,

displaees the liquid and continues the discharge thereotl out through the passages leading to the nozzle (l. lllientlie pressure in the container falls below that of the outer atmosphere due to the-fluid being forced out` air enters through the opening 41.

Although but one specific embodiment of this invention has been herein shown and described. it will be understood that nu. merous details ot the construction shown may be altered or omitted without departing -t'rom the spirit ot this invention as de# fined by the following claims.

l claim- 1. device ot' the class described, comprising a container, a discharge nozzle in one end ot said container and adapted to be used for directing the discharge of the contents t'roin said container, a cylinder' mounted within said container and having an inlet in the. end thereot' which is adjacent to the said one end of said container and having an outlet at the opposite end, a piston slidably mounted in said cylinder,

`a. valve located in said inlet and adapted to permit fluid to liow from said container into said cylinder', a valve carried by said piston and adapted to permit the flow of fluid past said piston into the side of Said cylinder which communicates with said outlet, and a tube located outside of said cylinder and let and the other extending alongside thereof Aand connecting said cylinder outlet with said nozzle.

2. A device of the class described, comprising a container, a discharge nozzle in one end of said container, a cylinder mounted in said container and having an inlet in one end and an outlet in the opposite end, a fittingattached to the end of said cylinder and having passages formed therein, one of which communicates with said cylinder inwith said cylinder outlet and said nozzle, a tube supporting said lfitting and providing communication between said other passage'and said nozzle, a. second tube located on the outside of said cylinder and connecting said outlet with said other passage,-a piston slidably mounted in said cylinder, and valve mechanism adapted to control the admission 'of fluid from said container into said cylinder and the discharge thereof from said cylinder through said nozzle when said piston is reciprocated in said cylinder.,

3. A device of the class described, comprising a container, a discharge nozzle located in one endA of said container, a cylinder mounted withinsaid container and having an inlet at one end and an outlet atvthe opposite end, a piston slidably mounted in said cylinder, a. tube located outside of said cylinder and connecting said cylinder outlet with'said nozzle, valve mechanism adapted to control the admission ofy fluid from said contalner into said cylinder and the discharge thereof from said cylinder through said nozzle, a valve arranged to shut off communication through said noz-A zle, a stem on said valve extending into said cylinder in position to be engaged by said piston when said piston is in its lowermost position, means normallyurging said valve to'vard its open'position, and other means adapted to hold said piston in its depressed position for closing saidfvalve.

4. A device of the class described, comprising a container, a discharge nozzle in one end of said container, a cylinder mounted in said container and having an inlet in one end and an outlet in the'opposite end, a fitting attached to the end of said cylinder and having passages formed therein, one of which communicates with said cylinder inlet and the other with said cylinder outlet and said -nozzle, a tube supporting said fitting and providing communication between said other passage and said nozzle, a second tube located on the outside. of said cylinder' and connecting said outlet with said other passage, a piston slidably mounted in said cylinder, valve mechanism adapted to control the admission of fiuid from said container into said cylinder' and the discharge thereof from said cylinder through said nozzle When said piston is reciprocated in said cylinder, a valve arranged to shut ing said valve toward its open position, said valve being adapted to be held in its closed position when said piston is depressed.

5. A device of the class described, comprising a container, a discharge nozzle in one end of said container, pumping mechanism located in said container and having an outlet connected to said nozzle, a suction pipe connected to said pumping mechanism and terminatingadjacent to the ends of said container, said pipe having ports in each of the ends thereof, and sleeves slidably mounted on the ends of said pipe and having ports therein adapted to be moved into and out oi' registration with the ports in said pipe, said sleeves being adapted to be normally urged by gravity to open the ports at one end of said pipe and close Vthe ports at the opposite end so as to allow a suction of fluid from the llowest part of said container.

6. A device of the class described, comprising a container, a discharge nozzle in one end of said container, pumping mechanism located in said container and having an outlet connected to said nozzle,la suction pipe connected to said pumping mechanism and terminating adjacent to the ends of said container, said pipe having ports in each of the ends thereof, sleeves slidably mounted on the ends of said pipe and having ports therein adapted to be moved into and out of registration with the ports in said pipe, and means connecting said sleeves whereby they are adapted to be normally urged by gravity to simultaneously close the ports in one end of said pipe and open the ports in the other end so as to provide communication between said pumping mechanism and the lowest point of said oon- A tainer. I

7. A device of the class described, coin,- prising a container, a discharge nozzle in one end of said container, pumping mechanism located in said container and having an outlet connected to said nozzle, a suction pipe connected to said pumping mechanism and terminating adjacent to the ends of said container, said pipe having the ends thereof open, sleeves slidably mounted on the ends of said pipe, caps attached to said sleeves and adapted to form closures for the open ends of said pipe, said sleeves having ports therein inwardly of said caps, and means connecting said sleeves whereby they are adapted to be normally urged by gravity to simultaneously shift said caps to close one end of said pipe and open the other so as to allow a suction'of fluid from the lowest part of said container.

10 said valve and adapted to-be engaged by the piston of said pumping'rnechanism so as to` l hold said Valve closed when said vpumping mechanism is contracted.

Signed at Chicago this 21st day of Feb., 1914.

Witnesses EDWIN PHELPS,

WILLIAM E. HANIL WALTER T. CHARLES. l y

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