US1010078A - Automatic fire-sprinkler. - Google Patents

Description

Q. Inventor:

A. I. SUHALL. AUTOMATIC FIRE SPRINKLER.

APPLICATION FILED SEPT. 14, 1911.

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AUTOMATIC FIRE-SPRINKLER.

Specification of Letters iatent.

Application filed September 14, 1911. Serial No. 5452327.

and particularly to devices of this character intended to automatically sprinkle or spray water or other substances, and its objects are, among others, to produce a device of this character of relatively simple and durable construction, which will act with greater certainty and protect a greater zone or area from fire.

The invention consists in the construction, combination and arrangement of parts hereinafter described and claimed and illustrated in the accompanying drawings.

In the said drawings Figure 1 is a bottom plan of a fire extinguishing sprinkler embodying the improvements, and Fig. 2 is a vertical section of the same on the line 22 of Fig. 1, looking in the direction indicated by the arrows in that figure, and showin the device inverted.

The inlet tube A is adapted to be connected with a water-main or other source of supply of -fire extinguishing fluid, and communicates with a central chamber B, having a vent in its bottom consisting of a foraminous cone C, provided with a cap D, covering and closing the same. From this central chamber B extend four horizontal hollow arms F, each arm provided with a hollow head G, provided with a vent H, consisting of a foraminous cone C, and closed by a cap J, similar to the cap D. The caps D and J fit the exterior of t eir respective cones very closely, and are, in fact, ground,

so as to coincide therewith exactly. The inner edge of the cap, however, does not 'quite come in contact with the base of the cone, and an annular space K is, therefore, left between the said inner edge and base. These caps are normally held in position by struts L and M, made of fusible metal and provided with a conical tip at one end, fitting a depression'in the cap and a recess at the oppositeend to receive the point of the thumb-screw plug N, by which pressure is applied thereto and the cap thus pressed firml against the perforated cone. The thum -screws N intermesh with threaded apertures in the brackets O and P, the bracket 0 being threaded to the exterior of the chamber B, and the brackets P to the" exterior of the heads G. lVhen the fusible struts L release the caps they fall off of their Patented Nov. 28, 1911.

own weight, accelerated by the pressure" from within, and in order to prevent loss of these caps, they are connected to the 'sprinkler by means of chains R, secured at one end to a collar R on the cap, and the other end to a collar R; which in the case of the caps closing the orifices of the arms are strung on the arms F, and in the case of the cap closing the bottom orifice of the chamber B surrounds one branch of the bracket 0.

It will be noted that the construction herein described is one of extreme strength and simplicity, and that the parts are interchangeable. The construction is also such that the sprinklers may be assembled or dismembered withoutthe use of tools or the making or breaking of permanent joints, and

it is with these ends in view that the hollow beveled seat for its extreme inner edge; thatthe brackets O and P are threaded on the exterior of the central chamber B and the hollow heads G respectively; and that the caps D and conical sprinkler vents C are the same size.

It is a very simple matter for the engineer of a large building fitted with this apparatus to make repairs after a fire, from a stock of parts kept on hand, or to set up new sprinklers in different parts of the building, and, in fact, this work can be done, and. done properly, by persons not at all familiar with mechanical appliances. In addition to these and other advantages, the sprinkler possesses the great advantage of covering an extensive area, and thus protecting itfrom fire. The number of sprinkler heads connected with the central chamber'B may be varied, and one or two or more may be plugged up, where the sprinkler is located in a corner or some other place where sprinkling in one general direction only is desired. There are also other advantages which will be obvious to those familiar with this art, among which is the advantage afforded by the method of attaching the brackets to the frame of the sprinkler, which cap, and a small screw-bolt R which passes through the arm and engages the end link of the chain. WVith this arrangement the cap with its collar may be placed in position and the chain then connected with the collar.

What I claim is: 1. A device of the character described, comprlsing a central chamber, means for connecting the said chamber with a source of fluid supply, a plurality 'of hollow arms extending horizontally from said chamber, said arms being formed in two detachable sections, a hollow head on the end of each arm, a conical perforated portion on said head, a complemental cap fitting said perforated conical portion, a bracket surrounding 'said cap, a fusible strut, and an adjust able member secured to said bracket, by the movement of which the said strut may be pressed against the said cap or withdrawn therefrom.

2. A device of the character described, comprising a central chamber, means for connecting the said chamber with a source Copies 01' this patent may be obtained for therefrom,

of fluid supply, plurality of hollow armsmovement of which the said strut-may be pressed against the said cap or withdrawn and a perforated conical vent in the bottomof said central chamber and a cap co ering the same, both parts being substantially identical with the first claimed conical port-ions and caps.

3. In a device of the character described the combination of a perforated cone, a cap covering said cone and closing the perforations, a collar on said. cap, an arm projecting from said collar, means for spacing said arm from the cap, and'means for connecting the said arm to a chain or other flexible member, whereby the said cap is held connected to the device after it has been displaced.

Witness my hand this 11th day of September, 1911, at the city of New York, in the county and State of New York.

v 'ALY I. SCI-IALL. Witnesses:

E. W. SCHERR, Jr., ALAN C. MODONNELL.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. i

formed in two detachable

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