US1120312A - Automatic fire-extinguisher. - Google Patents

Description

J. L. JOHNSON 5: G. L. SAUNDERS.

AUTOMATIC FIRE EXIINGUISHER.

APPLICATION FILED DEG/7,1911. RENEWED APR. 30. 1914.

Patented Dec. 8, 1914.

' OFFICE.

JOHN LINDQEY JOHNSON,

OF HOME, AND CHARLES L. SAUNDERS, OF CABTERSVILLE,

GEORGIA.

AUTOMATIC FIRE EXTINGUISHER.

Specification of Letters Patent.

Application filed December 7, 1911. Serial No. 664,528. Renewed April 80, 1914. Serial No. 835,488.

To all whom it may concern Be it known that wefJorm Lmosnr Jomw SON and CHARLES L. SAUNDERS, citizens of the United States, residing at Rome, county of Floyd, State of Georgia, and Cartersville, in the county of Bart-ow and State of Georgia, res ectively, have invented certain 1@ bottle containing sulfuric acid which is spilled when the tank is inverted whereby a gas is generated which produces a pressurein the tank and forces the water of the solution out of the tank and throws it on the fire. The tank is held in upright position by a fusible link, which latter, when it melts, permits the tank to tilt. I

It is the object of the present invention to provide an alarm device which is sounded when the tank tilts. This alarm device is an electric bell, the circuit of which is automatically closed when the tank tilts.

The invention also. has for its object to provide a novel means for holding the tank slightly off the perpendicular so that it is certain to tilt when the fusible link melts.

In the accompanying drawing forming a part of this specification, Figure l is a side elevation, partly broken away, showing the invention; Fig. 2 is a rear elevation thereof; Fig. 3 is an elevation showing the switch in detail, and Fig. 4 is aperspective view showing a slight modification of the tank suport.

p Referring specifically to the drawing, 5 denotes the tank of the extinguisher, the top thereof being provided with a suitable discharge nozzle 6. To the body of the tank, at diametrically opposite points, and below the center of gravity of the tank, are secured trunnions 7, one of which latter has a crank arm 8 which is for a purpose to be presently described. .The tank is held suspended in a frame 9 which is secured to the ceiling 10 or some other overhead support. The frame has two spaced branches 11 between which the tank is mounted so as to be free to swing when it is released. The lower ends of the branches 9 engage the trunnions 7, a pivotal connection being provided.

To the support 10 is secured by means of a clip 13, a spring wire 14 one end of which loosely abuts against the nozzle 6 and holds the tank slightly off the perpendicular. The other end of the wire has a hook 15 which is engaged by a fusible link 16 connected to a hook 17 on the nozzle (3. This link holds the tank in upright position, and when fused, the tank automatically tilts and is inverted, this action being assured by reason of the fact that the tank is unbalanced and also oil the perpendicular.

At 18 is indicated a bell or other electric signal device which is controlled by a switch carried byone of the branches 11. The switch comprises a suitable base '19 on which are mounted two tongues 20 to which the circuit wires 21 are connected. To the base, between the tongues, is pivoted a lever 22, which, when it bridges the springs, closes the circuit so that the alarm will be sounded. The switch has a suitable cover 23 from which one end of the lever 22 extends. The arm 8 is so located that it is in contact with one side of the projecting end of the lever 22. Normally, the lever lies between the tongues 20, out of contact therewith. When the tank 5 tilts, the arm 8 swings around and moves the lever 22 to the dotted line position shown in Fig. 1. In this position the switch tongues are connected by the lever and the circuit of the signal device 18 is closed and thus sounded. It will therefore be evident that an alarm is automatically given when the tank tilts. The trunnions are made fast to the tank and turn therewith when it tilts.

Fig. 4 shows a slight modification of the tank support, the same comprising a yoke between the branches 24 of which the tank is pivotally hung by means of the trunnions. The switch is carried by one of the yoke branches. To the top of the yoke is connected a hook 25 whereby the apparatus may be suspended from the ceiling or some other support. The top of the yoke also carries the wire 14.

We claim:

1. In a fire-extinguisher, a tiltable receptacle, a fusible retaining device therefor, a support for the receptacle, trunnions on the receptacle and engageable with said support, one of said trunnions having a crankarm, an electric signal device, a switch controlling said device carried by the support,

Patented Dec. 8, 1914.

and a pivoted switch-actuating member in the path of the crank-arm and. engageeble thereby when the receptacle tilts.

2. lln a fire-extinguisher, a receptacle, it supp rt in which said receptacle is pivotally mounted, a wirefastened to the support and having one of its ends loosely abutting egalnet the top of the receptacle for hololing the same ofl the perpendicular and. a fusible connection between the other end of the 10 Wire and the tank.

In testimony whereof we afiix our signw tures in presence of two witnesses.

JUHN LINDSEY JUHNSQN. CHARLES L. SAUNDERS. W tnesses JOHN L. HARRIS, "W. REX MANNING.

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