US1256870A - Combined pump and fire-extinguisher. - Google Patents

Description

G'. D. BUCK. COMBINED PUMP AND FIRE EXTINGUISHER. APPLICATION FILED JULY 23, 1917.

Patented Feb. 19, 1918 I citizen of the United States,

pneumatic tires and the like,

GEORGE D. BUCK, OF ST. LOUIS, MISSOURI.

' COMBINED PUMP AND FIRE-EXTINGUISHER.

Specification of Letters Patent.

Application filed. July 23, 1917.

To ail whom it may concern:

Be it known that I, GEORGE D. BUCK, a a resident of the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Combined Pumps and Fire-Extinguishers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to a combined pump and fire extinguisher; The new device can be used as an ordinary pumpfor inflating and it can also be used as a fire extinguisher. In accordance with the present invention, an ordinary tire pump can, at a very small cost, be converted into a highly efficient fire extinguisher, without in any way impairing the usefulness of the tire pump. To accomplish this, a chemical cylinder is associated with the pump in such a manner that it will. not interfere with the flow of air from the pump to a tire. By operating a simple valve device, the air can be directed from the pump cylinder to the chemical cylinder, and in this event the air pressure will be transmitted from the pump to the fire extinguisher. In addition to the broad disclosure of a combined pump and fire extinguisher, I have herein shown and described a specific combination and arrangement of elements which cooperate with each other to constitute a simple unitary structure, well adapted to perform either of its two functions. To produce a complete fire extinguisher, the pump must cooperate with the chemical cylinder, and owing to the manner in whic the various elements are combined with each other, the general efliciency of the device as tire pump is not afiected by the chemical cylinder. c

Figure I is a front elevation of a combined pump and fire extinguisher constructed in accordance with my invention.

Fig. II is a side elevation.

Fig. III is a transverse section on line III-III, Fig. I.

Fig. IV, is an enlarged detail view, partly in section, showing the 3-way valve.

Fig. V is an enlarged fragmentary view of the upper portion of the chemical cylin- To illustrate the invention, I have shown a tire pump wmpmsmg a low pressure cylinvi'ded with a valve 16, escape of fluid from said Patented Feb.19, 1918. Serial no. 182,208.

der 1, a high pressure cylinder 2, a base 3 to which the lower ends of the cylinders are secured, a head 4 secured to the upper ends of the cylinders, pistons 5 arranged in the cylinders, piston rods 6 secured to the pistons and extending through the head a, and an operating handle secured to the upper ends of the piston rods. The air "forced from the bottom of the cylinder 1 flows through a passageway 3 in the base 3, and enters the lower end of cylinder 2.

The air under pressure. discharged from the outlet at the upper end of the cylinder 2, passes through a valve housing 8 and also through the usual flexible tube 9,. which I i will term the main air conductor. This air conductor is secured by means of a coupling 10 to the valve housing 8, and it is provided at its lower end with the usual coupling 11 adapted to be attached to a pneumatic tire. l/Vhen the device is used as a tire inflating pump, the air under pressure flows from the pump cylinders and through the flexible tube 9 in the usual manner.

12 designates an elongated chemical cylinder arranged parallel with ders and secured thereto by means of bands 13 which surround all of the cylinders. A secondary air conductor 14-. leads from the valve housing chemical cylinder 12, and a check valve 15 (Fig. V) is arranged in said secondary conductor to prevent chemicals from flowing from the chemical cylinder to the valve housing 8. A discharge member 16, at the lower end of the chemical cylinder, is proi'or controlling the cylinder. 17 designates a 8-way valve arranged in the valve housing 8 (Fig. IV), the latter being provided with three passageways adapted to be opened and closed by the valve.

When the device is used as an ordinary tire pump, the 3-way valve occupies the position shown in Fig. IV, and the air under pressure can then flow freely 'frem the pump cylinders to the main conductor 9, which leads to the tire. When used as a fire extinguisher the 3-way valve is adjusted to close communication between the pump and the main conductor 9, at the same time placing the pump in communication with the secondary conductor 14 leading to the chemical cylinder. The air under pressure is then forced into one end of the chemical the pump cylin- 8 to the upper end of the used.

quickly cylinder, and the fire extinguishing medium is discharged through the valve 16 at the bottom of the chemical cylinder.

The pump operatinghandle and the valve 16 lie at opposite ends of the structure, so the device can be conveniently handled when as a. fire extinguisher. It will be observed that I have produced a highly eflicient fire extinguisher by merely adding- :a few simple and inexpensive elements to an ordinary hand pump, and these elements are so combined with the elements of the pump that the new device can be easily and converted from a tire pump/to a fire extinguisher by merely turning the valves 16 and 17. r

I claim: I 1. In a combined tire pump and fireiex- 'tinguisher, a ihandpulnp provided with an outlet and a main conductor for the discharge of air under pressure, a chemical cylinder secured to said pump and communicating with said outlet, means under the control of the ep'erator whereby the air device,

- conductors,

: tinguisher,

under pressure passing fromithe pump, can be directed either te said main conductor or to said chemical cylinder, the pump operatinghandle being located at; one end of the and a discharge member secured to the chemical cylinder near the opposite end of the device. 4

'2. In a combined air pump and tire extinguisher, a pump provided with an outlet for the air under pressure, anaain air conductor leading from said outlet, a secondary conductor branchingfrom said main air con ductor, selective means .for controlling the flow of air from the pump to either of said a chemical chamber communicating with said secondary conductor, and a valve for controlling the escape of fluid from said chemical chamber. Y

3 In a combined tire pump and fire exa pump cylinder provided with an outlet for the all under pressure, a piston in communication withsaid secondary air conductor, selective means whereby the air passing from said pump may be directed either to said flexible tube or to said secondary a-ir conductor, and avalve'for. controll ling the escape of fluid from'said chemical cylinder.

4. Ina combined tire pump and fire extinguisher, a vertical vided Withan outlet for the air under pres, sure, a piston in said pump cylinder, anjopcrating handle arranged above said pump cylinder and secured to said piston. a threeway valve housing-communicating with said outlet, a flexible, discharge tube coupled to said three-way valve housing, a secondary air con.- d'uctor leading from said three-Way valve housing, a three-way valve arranged in said valve housing so as, to direct the air either tosaidflexible discharge tube. or to said Sec.- ondary .air conductor, a chemical cylinder associated with and secured to saidpump cylinder, said cylinders being approximately parallel with each otherfthe discharge end of said secondary conductor being connected to and in communication with the upper end of. said chemical cylinder, a check valve assnciated with the secondary conductor to prevent the flow-of fluid from the chemical cylinder to said three-way .valve a discharge member at the bottom of said chemical cylinder, and a valve'for controlling the flow of fluidthrough. said discharge member.

. In testimony that I claim the foregoing I' hereunto aflix my signature.

"GEORGE n. BUCK.

Copies at this patent may-be obtained for Vfive cents each. byaddre ssing the Commissioner of Patents, weshinst nrn pump cylinder pro-

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