US550279A

US550279A - locker

Info

Publication number: US550279A
Authority: US
Publication date: 1895-11-26
Anticipated expiration: 1912-11-26

Description

2 Sheets-Sheet 1.

No. 550,279. Patented Nov. 26, 1895.

(No Model.)

HU -ll 4 WITNESSES: INVENTURS A mmr AN DREW EGNAHANL PNUTOiflHQWASHINGTUND C.

(No Model.) I 2 Sheets-Sheet 2.

A. LOCKER & W. .0. GLEASON. FIRE EXTINGUISHER.

UNITED STATES ATENT FFICE.

ALFRED LOCKER, OF \VOODSIDE, AND WARREN C. GLEASON, OF BROOKLYN, ASSIGNORS TO THE GLEASON & BAILEY MANUFACTURING COMPANY,

OF NEIV YORK, N. Y.

FIRE-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 550,279, dated November 26, 1895.

Application filed February 16, 1895. Serial No. 588,608. (No model.)

To all whom, it may concern:

Be it known that we, ALFRED LOCKER, residing at IVoodside, Queens county, and VAR- REN C. GLEASON, residing at Brooklyn, Kings county, New York, citizens of the United States, have invented certain new and useful Improvements in Fire-Extinguishers, of which the following is a specification.

Our invention relates to that class of fireextinguishers in which the extinguishing fluid is expelled from a reservoir by the expansive force of compressed air, and is directed particularly to the construction of the bottom of the reservoir and the arrangement of the airpump upon the exterior of the reservoir, and to certain details hereinafter more fully described.

In the drawings, Figure 1 is a side elevation of our improved fire-extinguisher. Fig. 2 is a cross-sectional view of the same. Fig. 3 is a detail view of the bottom, partly in section, taken on the line a: 00 of Fig. 2. Fig. at is a vertical sectional view of the air-pum p, outletcock, and connections; and Fig. 5 is a view of the lower seat of the upper valve of the air-pump. Figs. 6 and '7 are details of the valves of the air-pump.

Similar letters of reference designate similar parts in all the drawings.

A is the reservoir, which is formed of a single piece of drawn metal and is provided with the bottom B, which is of cast metal in a single piece and has two ribs C and D integral therewith and at right angles to each other upon its upper side. These ribs serve to give strength to the bottom, beside which the rib C has a channel E running through it, which forms the conduit for the ingress of the air and the egress of the extinguishing fluid. The outer end of this channel is threaded to receive the sleeve F, which is screwed firmly therein and projects through the shell of the reservoir and supports the exterior connection.

G is an opening through the bottom through which the extinguishing fluid is poured in. It is threaded to receive a plug H and has an extension or rim g rising somewhat above the floor of the bottom to give strength and additional holding room for the plug. Channels h h h are cut through this rim to the level of the bottom to provide for the complete emptying of the reservoir when desired, as thereby all the liquid will be allowed to flow off. The lower edge of the bottom is provided with a bead I, against the upper edge of which the shell of the reservoir rests, as shown.

The nozzle J is firmly secured to the sleeve F, and its opening forms the outer continuation of the discharge-channel. It is controlled by the cock K, operated by the lever 7t, and when open a continuous straight channel is formed. This avoids all unnecessary friction upon the escaping fluid and also renders it easy to dislodge any accumulation of sediment that may form in the channel or about its inner month by ,means of a wire inserted through it.

The air-channel Z opens into the main channel behind the cock K and is controlled by the cock L. The nozzle m of the air-pump M is screwed into the socket above this cock, its upper end being held in place by the collar a, attached to the band N, surrounding the reservoir. A set-screw 0 prevents the unscrewing of the pump, except when desired.

The pump is provided with the hollow piston-rod Q and piston-head q, in which is the puppet-valve P, its lower seat 19 being provided with openings p p and p whereby upon the upward stroke of the piston the valve P rests over the'hole p and the air is allowed to descend through the holes 1') 19, while upon its downward stroke the upward pressure through the opening 19 raises the valve P to its upper seat, preventing the egress of the air.

The lower puppet-valve R operates to permit the downward passage of the air; but so long as the cock L is open it will be thrown back to its upper seat by the pressure from within the reservoir as soon as the downward force of the piston is relaxed. Thus it will be seen that the air-pump is always ready for instant use, either to apply the pressure when the reservoir is being filled or to increase the pressure, if that is required; but the cock L may be used to close the channel Z, if it is desired to relieve the air-pump from the backpressure, or if for the purposes of repair or otherwise the air-pump is to be removed.

IOO

In charging the reservoir it is turned bot;- tom up, the plug H is removed, the cock K closed, and the liquid is poured into the cupl'ike bottom,when it will flow through the hole Gwithout the necessity of using a funnel, as is the case where the opening is through a projecting tube or sleeve. The plug H is then screwed on and the extinguisher turned into an upright position. The air-pump is then operated, forcing the compressed air through the channel E, when it will rise to the top of the reservoir, and this is continued until the desired pressure is obtained. In discharging, the cock K is opened by the lever 7t, allowing the fluid to escape.

By this construction we obtain an extinguisher wherein the outlet-channel is formed on the upper side of the bottom, being protected from danger of injury from outside causes when in use, and its ribs, being integral with the bottom serve to give additional strength thereto. It is important that the inner opening of the diseharge-channel should extend nearly to the side of the reservoir opposite to the nozzle, for in use the extinguisher is usually held with the nozzle sligl'itly elevated, causing the liquid to flow to the opposite side of the reservoir, and in ourconstruction,where the outlet channel opens upon the level of the bottom, practically all the fluid will be expelled before the compressed air can reach the opening. The plug H is also so located as not to interfere with the straight path of the discharge-channel, and bearing, as it does when in place, firmly against the bottom is not liable to disarran gem cut or injury from any ordinary outside causes.

By the arrangement of the air-pump and its connections we are enabled to locate the pump on the exterior of the extinguisher, where it is at all times ready for use and where it can be immediately reached and readily removed for repairs.

It is of the utmost importance that the valves and cocks of extinguishers of this class shall be so constructed as to be and remain airtight. The wear upon the valves of the airpump is heavy, as under the heavy pressure of the compressed air the valves are thrown up and down in their seats with very considerable force. lleretofore such valves have been with plain upper shoulders, and annular washers have been slipped down upon them to form the packing. Under the force of the impact of the valve with its seat this packing, being unsupported at its outer edges, expands and becomes spread beyond the shoulder of the valve, obstructing its free operation and tending to malee it work imperfectly. lVe avoid these difliculties by constructing the valve with an annular groove it in its upper shoulder, in which is inserted the washer r. The exterior rim of this groove prevents the lateral expansion of the washer, preserving its proper form and causing it 10 perform its functions the more perfectly the harder the usage to which it is subjected.

The flange of the plug ll is also provided with a similar groove and washer, and this construction can be applied at all points where the packing is liable to disarrangemeut by reason of frequent or occasional movement of the parts.

In forming the stop for the main cock it has been customary to cut away the main body of the casting to allow of the sweep of the stoppin on the plug. This reduces the bearing and in creases the tendency to leak. To avoid this reduction of the bearing-seat, we form a lug 0' upon the body of the cock by inserting a pin therein during the process of casting, which lug projects out so as to engage the pin 3 in the shank of the cook The lug r and pin 5- engage when the cock is fully open, so as to produce a free discharge-channel for the fluid.

llavin g thus described our invention, what we claim, and desire to secure by Letters Patent of the United States, is-

The combination with the shell and bottom of a fire extinguisher of the class named, of a discharge nozzle provided with a main discharge channel, a main cock controlling such channel, an air channel opening into such main channel behind such. main cook, a cock to control such air channel, an air pump connected with said air channel provided with a lower puppet valve to resist the return pressure of the compressed air, a piston head, provided with a puppet valve therein, a hollow perforated piston rod, and a wire band surrounding said reservoir shell, and carrying a ring, with set screw thereon, to support the upper end of such air pump substantially as shown and described.

ALFRED LOCKER. \VARREN C. GLEASON. Witnesses:

John A. :MCKAY, HERBERT J. HINDES.