US485519A - James h - Google Patents

Description

(No Model.)

J. H. WILSON. v AUTOMATIC FIRE EXTINGUISHER 0R SPRINKLER.

No. 485,519. Patented Nov. 1, 1892.

Wl'lLFlE UNITED STATES JAMES H. WILSON, OF LOWELL, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO ALONZO A. COBURN, 'OF SAME PLACE.

AUTOMATIC FIRE-EXTINGUIS HER OR SPRINKLER.

SPECIFICATION forming part of Letters Patent No. 485,519, dated November 1, 1892. Application filed September 21, 1891. Serial No. 406,307- (No model.)

To all whom it may concern.-

Be it known that I, JAMES H. WILSON, a citizen of the United States, residing at Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented a certain new and useful Improvement in Automatic Fire- Extinguishers or Sprinklers, of which the following is a specification.

My invention relates to automatic fire-extinguishers or sprinklers of that class which are set in operation by the heat of the surrounding atmosphere, and comprises the cornbinations and devices hereinafter described and claimed.

Automatic fire extinguishers or millsprinklers, as they are sometimes called, as heretofore constructed have usually depended for their operation on the opening of a valve by the pressure of water thereon, said valve being held closed by an easily-fusible connection adapted to be melted by an excessive temperature in the atmosphere of the room containing such sprinklers. The objections to such contrivances are that the valves are sometimes imperfectly closed before being secured by the fusible connection and allow the escape of water and that the valves when properly closed sometimes fail to open after the fusible connections are melted, owing to the valves being stuck to their seats by rust or by matters contained in the water, or owing to the pipes or nozzles containing the valves being filled above the valves with rust and sediment.

In the accompanying drawings, Figure 1 is a front elevation of a part of a supply-pipe,a T, and my improved sprinkler, the lower part of the nozzle being in section to show the stopper and its retaining-ring, said stopper and ring being also in section, the breaker or weight being held out of contact with the stopper by a link; Fig. 2, a central vertical section on the line 2 2 in Fig. 3 of my improved sprinkler, the stopper being represented as broken, the breaker or weight having fallen; Fig. 3, a side elevation of the nozzle and part of the breaker and a vertical section on the line 3 3 in Fig. 2 of the breaker and its fulcrum.

A is a supply-pipe, such as is commonly arranged below the ceilings of factories to carry water to the automatic extinguishers or sprinklers, a number of such sprinklers being ar- PATENT OFFICE.

ranged on a line of supply-pipe and the sprinklers being arranged near enough together to sprinkle every part of the room.

BisaTor T-shaped connection,which unites sections or lengths a a of the supply-pipe A. To the outlet 6 of the T B is secured the nozzle C, said nozzle being provided atits upper end with an external screw-thread c, which engages an internal screw-thread in the outletb in the usual manner, or said nozzle may be secured to said T or to the supply-pipe A in any wellknown manner, but when secured as above described is provided with a manysided flange o to be grasped by a wrench to 6 assist in screwing the nozzle to the T. The lower part of the nozzle 0 is preferably bell shaped or downwardly-flaringand has a shoulder 0 against which is placed a stopper or disk D of fragile material, as glass, said stop- 0 per being retained in place by an externallythrcaded ring or washer E, provided with holes 6 to receive a spanner 0r forked wrench to assist in turning said ringE to place. The stopper may be packed around its edges in 7 any usual manner and is preferably concavoconvex in form and arranged with the convex side up to enable said stopper to sustain a great pressure from above and yet to be so thin as to be easily broken by a blow from beneath.

The nozzle 0 is provided with a downwardly-extending arm a, cast or otherwise secured thereto and having an upwardlypointing horizontal knife-edge 0 which serves as a fulcru m for the breaker or Weight F. The breaker F is in the form of a lever provided with a notch j, which serves as a bearing-surface to rest upon said knife-edge,said-notch being of such an angle as to allow the breaker or weight 0 F to turn freely thereon. The outer arm f of said breaker is heavy enough to rock the breaker with considerable force when raised into the position shown in Fig. 1 and let go and the other end of said breaker is preferably provided with one or more points f adapted to strike and shatter the stopper D when the weighted end of said breaker falls, said points being arranged to strike at and near the center of said stopper. Below the points f is arranged a nearly-conical deflector f of a diameter large enough to more than fill the bottom of the ring E, said deflector having three or more points f or upward projections castorotherwise formed thereon near its periphery and adapted to strike against the bottom of said ring E when said deflector is forced into the nozzle to prevent the deflector from entirely closing the opening-0t" said nozzle. The water from the nozzle is di rected downward and outward on all sides by the deflector. The weight Fisnormally held from pushing or striking against the stopper,

as in the position shown in Fig. 1, by a link or connection G,ot' a material fusibleat alow temperature or of a material adapted to be destroyed by heat, which*engagesprojectionsa stopper of fragile material normally closing said nozzle,a breaker capable of rending said stopper, a fusible connection normally holding said breaker from acting on said stopper, said breaker being provided with a conical deflector arranged to enter said nozzle and larger than the outlet of said nozzle, and stops toprevent said deflector from entirely closing said nozzle, as and for the purpose specified.

2. The combination of a nozzle or dischargepipe, a stopper of fragile material normally closing said nozzle, a breaker capable of rending said stopper, a fusible connection normally-holding said breaker from acting on said stopper, said breaker being provided with a conical deflector arrangedto enter said nozble and larger thamthe outlet of said nozzle and l l having. projections-- arranged to strike against the sides of" saidinozzle to prevent said deflector from entirely closing said nozzle, as

andfor the purpose specified.

In witness whereofl have signed thisspecification, in the presence of two attestingwitnesses, this-12tl1day ofSeptembeigA. D. 1891.

JAMES l-l. \VILSON.

Witnesses:

ALBERT M, 1 MOORE, LEROY T. RILEY.-

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