US184067A - Improvement in fire-extinguishers - Google Patents

Description

A. s. Donn a 1. c. ANDREWS.

FIRE EXTINGUISHER.

Patented Nov.7.1876.

maman UNITED STATES PATENT Q'EEICE.A

AMZI s. DODD AND IsAAC C. ANDEEws, OE NEw YOEK, N. Y., AssIeNoEs To HOME FIRE EXTINeUlsnEE COMPANY, OE sAMEPLACE..

IMPROVEMEv-NTIN FIRE-EXTINGUISHERS.

Specification forming part of Letters Patent No. 184,067, dated November 7, 1876 application led April 18, 1876.

detail horizontal section ofthe same taken through the line :r x, Fig. 1.

The object of our invention is to improve the construction of fire-extinguishers to enable the gas-generatin g ingredients to be read ily introduced, kept separate for any desired length of time, and then brought together,

when required, by mechanical means applied;

from the outside of the vessel.

The invention will first be described in connection with drawing, and then pointed out in the claims.

In the drawing, A represents the can or cylinder of a fire-extinguisher, inthe top of which is formed a hole, into which is inserted, from the inside of the said can or vessel, a female screw,.]3. The screw B has an Outwardly-projecting flange formed around its inner end, which rests against, and is soldei-ed to or otherwise secured to, the topo' the can or vessel A, against which it rests. U is a male screw, lwhich' screws into the screw B, and has a packing placed around it, which is pressed against the outer end ot' the screw B, as shown in Fig. 1. To the top ofthe male screw C are attached, or upon it are formed, arms or lever handles D for convenience in'turning it in and out. To the top oi' the male screw C, upon the outer side, is attached a dome, E, and to said top, upon the inner side, is attached an inverted cup, F.

One ofthe parts E F may have a neck formed upon it to pass through a hole in the top of the male screw C, and screw into the outer side of said parts,clamping the said top between them 5 or the three parts may be connected in any other convenient and substantial manner.

The inverted cup F may be formed solidly with the top of the screw C, and in the form of a downwardly-projecting ange, if desired. The lower part or mouth of the cup F is cylindrical to tit into the' upper end of the rack 0r cage G, and has a ring-flange formed upon it to limit the upward movement of the said cage, and has lugs formed upon it to' enter right-angled slots in the upper part of the cage G, so as to secure the said cage to its supporting-cup by a bayonet-catch.` H is a stem or shaft, which passes up through the top of the screw C, and through the top of the dome E, and has a screw-thread cut upon its upper part to it into a screw-thread cut in the hole in the top of the dome E. To the lower end of the stein H, within the vcup F, is

attached a bell, I, to fit over the neck ot' a bottle, J, and rest upon or near the shoulders of said bottle. The bottom of the bottle J rests upon a boss, K, formed upon the bottom of the cage G,.or upon a small plate placed upon said bottom, so as to break the said bottle as the bell I is pushed down against it, by turning the stem H downward. lhe stein H is turned downward by a leverhandle, L, attached to its upper end, and is again raised when the lever-handle L is released by a spring connected with said stein and secured in the dome E. This spring is not shown in the drawing.

This construction renders it impossible to break a charged bottle when placing it in place from forgetting to raise thesteunH and bell I after breaking a bottle. Packing is placed between the bell I and the cup F, and between the cup F and the top of the screw G, to prevent any fumes or vapors from escaping through said joint.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

l. The combination of the female screw B,

provided with a flange upon the'outer side of its inner end, and the male screw C, provided with a lever-handle, D, and a dome, E, with the top of a can or vessel, substantially as herein shown and described.

2. The combination, with internally-threaded dome E, threaded stem H, and lever L, of the bell I, bottle J, and convex-bottomed cage G K, substantially as and for the purpose specified.

' AMZI S. DODD.

ISAAC G. ANDREWS.

. Witnesses:4 l

J AMES T. GRAHAM, ALEX. F. ROBERTS.

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