US646596A - Fire-extinguisher. - Google Patents

Description

Patented Apr. 3, I900.

s. 830w". FIRE EXTINGUISHER.

(Application filed Nov. 5, 1896.)

2 Sheets-Shet I.

(No Model.)

WITNESSES:

'5 Af/o may m2 Nbnms Pz'rsns =0. Puomrrna. wnsmusrou, n. c.

Patented Apr. 3, I900.

. B. 8. BROWN.

FIRE EXTINGUISHER.

(Applicatibn filed Nov. 6, 1896.)

.2 Sheets-Sheet 2.

(No Model.)

WITNESSES: r

' taining a second and different chemical com pound or solution, such as an acid. To bring the apparatus into use, the two solutions are UNITED STATES PATENT OFFICE.

A BENJAMIN S. BROWN, OF NEWV YORK, N. Y.

FlRE-EXTlN GUlSl-IER.

SPECIFICATION forming part of Letters Patent N 0. 646,596 dated April 3, 1906.

Application filed November '5, 1896. Serial No- 6l1,092. (No model.)

To aZZ whom, it mag concern.-

Be it known that I, BENJ MIN S. BROWN, a citizen of the United States, and a resident of New York, in the county and State of New York, have made certain new and useful Im provements in Fire-Extinguishers, of which the following is a specification.

- My invention is an improvement in chemicalfire-extinguishers.

Chemical fire-extinguishers generally consist of a chemical solution, usually alkaline, in a tank or vessel, and a second smaller vessel or receptacle, located within the first, concaused to unite, 7

The object of my invention is to improve the construction of-the interior or acid-holding receptacle and its operating mechanism.

I provide a suitable receptacle,'like a glass 7 bottle, and support it on a frame by means of trunnion hearings or pivots,conu e'cting the receptacle with its frame at a point below the center of gravity of said receptacle. The stopper is supported on'a' rotary 'rod which projects through the wall or cover of the outer tank. There are radial projections, one or more, from this stopper-support, and in close proximity thereto there is a helical track or groove with which these projections engage,

so that upon rotating the stoppersupport the stopperis withdrawn and removed from the vessel by a single continuous positive movement. The vessel being thus released will ordinarily upset by the operation of gravity;

but in order to insure the upsetting even under abnormal conditions I. provide a projection which is fixed to the stopper or stoppercarrier and which extends a short distance along the exterior surface of said vessel, so that as the stopper is withdrawn and removed the projection engages the exterior of the receptacle after the stopper is disengaged'and while it is being carried up out of the Way, and the receptacle is thus tilted or upset by a positive impulse which can never fail to be eflective even when the receptacle is at rest, as might be the case if the extinguisher remains in a stationary position and undisturbed. I may, however, in most cases safely Figure l is a complete Vertical cross-section of the tank, showing the acid-holder in complete operative position. Fig. 2 is a complete detail view of the acid-holder and its operating mechanism. Fig. 3 is a view of the heli- Fig.4c is a I cal groove or track produced. view of the frame or carrier. I Fig. 5 is a cross section on the line 5, Fig. 2.

X is a tank holding a liquid L, such as the well-knownv solution of water and soda. I v V B is the holder, in the form of a glass bot tle, containing an acid solutionA. The bottleB is supported in a frame F, its neck pr0= "jecting through the aperture f at the upper end. The frame has a removable bottom I),

secured by means'of screws 19 and nuts 20.

0, Figs. 1 and 2, is a cover for the tank X,

which screws into position.

C are two parallelrods or bars D. The frame F is supported at the ends of bars D upon pivoted or trunnion bearings 25 at points he Depending from low the center of gravity of frame F and bottle B, so that when the bottle is free it will ,assume a position with its opening or mouth downward. Y

S is a stopper, of rubber or some acid-proof material, tightly closing the mouth of the bottle. Stopper S is supported upon a stoppercarrier or rotating rod R, having a handle h in the form of a wheel. The rod R passes through a stuifed-box J in the cover 0.

c, Fig. 3, is a brass 'plate having tracks or grooves T, the edges of which terminate in straight edges 30 and 31. The plate 0 is arranged in ring form, as shown in Figs. 1 and 2, and fixed to the cover 0, so that the track T assumes the form of a helical line or groove. Projecting from the rim of the stopper S at diametrically-opposite points are lugs or projections P. The lugs P travel upon the edge of the groove or track T. hen the bottle is closed and stopper S in position, the lugs P lodge under the straight surfaces 30 and 31. Depending from one of the lugs P is a rod 10, and the radial distance of this rod 19 from the center of the rod R and the bottle B is substantially the same as that of either vertical member of the frame F.

In Fig. 1, Y is a discharge-tube extending to the bottom of the tank X.

Normally the acid-holder is in the position shown in Fig. 2-the stopper locked in position in the bottle by the engagement of the lugs P with the edges or surfaces 30 and 31. To operate the apparatus, the handle H is ro-, tated the reverse of clockwise. The lugs P travel in the groove or track T, unlocking the stopper and simultaneously withdrawing it in a vertical line, from which it results that the bottle is opened and the stopper positively withdrawn to a distance beyond the point of possible engagement with the bottle or holder, and this is accomplished by a simple single continuous movement amounting to a semirotation of the wheel 7L. As the stopper rotates the rod 1) moves with it and engages the upright member of the frame F, imparting movement to the bottle, which acts to upset it, causing it to assume the position shown in dotted outline in Fig. 1.

Vhat I claim, and desire to secure by Letters Patent, is

1. In an acid-holder for chemical fire-extinguishers the combination of a suitable vessel or receptacle, a supporting-frame therefor, pivotal bearings connecting points on said vessel with said frame; a stopper located on movable support, and an arm or projection from said stopper-support engaging said vessel to impart movement thereto as the stopper is withdrawn, substantially as described.

2. In a fire-extinguisher, the combination with the inclosing casing, of a pivotallymounted inner vessel, a device designed to engage said vessel and hold the same in a vertical position, means for operating said holding device from the outside of the casing, and a trip carried by said holding device and designed to overturn said inner vessel.

BENJAMIN S. BRO\VN.

Witnesses:

FRANCES A. SPERRY, WVALTER S. PLACE.

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