US1032558A - Sprinkler. - Google Patents

Description

JOSEPH A. MCELROY, OF` NEW YORK, N. Y.

SPRINKLER.

Specification of Letters Patent.

Patented July 16, 1912.

Application led January 3, 1911. Serial No. 600,389.

To all whom it may concern.'

Be it known that I, .JOSEPH A. McELRoY,A

a citizen of the United States of America, and a resident of New York, county and State of New York, have invented certain new and uselul Improvements in Sprinklers, of which the following is a specification, reference being had to the accompanying drawings, formintga part thereof.

My invention relates to sprinkler heads ofthe class employed in re extinguisher systems and consists in a novel form and construction by which a valve is norlnally held tight against its seat but is displaced under tire conditions, by the melting of a fusible connection.

The main objects of my invention are to improve and simplify structures of this character, and particularly to increase their sensitiveness so that'they will be promptly and surely operated under fire conditions.

To these ends my invention consists in certain novel details ot' construction and arrangement of parts, and in order that my invention may be fully understood, I will now proceed to describe a structure constitilting an embodiment thereof, reference being had to the accompanying drawings illustrating the same, and will then vpoint out the novel features in claims.

[n the drawings: Figure 1 is a view in part side elevation and part central longitudinal section of a sprinkler head con i structed in accordance with my invention.

Fig. 9. is a view in central .longitudinal section therethrough upon a plane at right angles to the plane of section ot Fig. 1. is a detail perspective view ot' ccrtain intermediate spacing elements employed, showing them as individually separated, as well as removed t'rom the remaining' striwture.

'lhe device in general comprisesI a tubular hub 5 externally screw-threadcd so that it may be readily connected to the end otl :i pipe, the upper portion of'the said hub constituting' a valve seat, a yoke 7 in the torm otl arms which risc upward trom the said hub, an adjustabhi abutment H support` ed by the said yoke at its upper end, a valve f) fitted to the said valve .scat (l, and intel'- mediate spacingl elements lt), ll :ind 12, disposed between the abutment H and the valve il. 'lhe elements l() and l2 are angular in t'orm as is clearly shown in lt`igs. 2 and il, the longer arms thcreotI being` disposed vel'- ticallhy, and the shorter armsA horizontally and 1n respective engagement with the said abutmentjl and valve 9. The long arms of the elements 10 and 12 are arranged to be united by means of the element 1l which constitutes a connecting strip, the said element being soldered to the elements 10and 1l as shown at 13, in Fig. 2;y by a forni of solder having the required low melting or fusing point. Intermediate its ends the element 11 is provided with a central Stud 14 which constitutes an abutment Aagainst which the extremities of the- longer arms 10 and 12 bear. These extremities "a1-e preferably pointed appears in l1`iig,.,t2, whereby their point of engagement. is lilitlted, and for convenience in assembling the pyarts the stud 14 may be provided with a head 15. The elements 10V and 12 are convenient-ly provided each with a lateral vabutment Q0 disposed above and below the extremities of the element 1l, preferably in close proximity, but out of direct contact', therewith, a portion of the fusible solder 13 bridging the slight gap thus lett. 'lhe abutment 8 is conveniently in the form of a threaded studhaving a pointed end which bears against the short arm of the upper intermediate element 10 and the upper extremity ot the stud is conveniently provided with :v cap 16 which serves not onlyns a part by which the abutment S may bey adjusted, but also as a detlectinn' device in the operation ofthe sprinkler. 'l'lie'upper side ot thejalve t) is provided with a central conical projection 1T in line with the pointed end of the abutment S and which bears alg'ainst the short arm of the lower iuteriediate member 12. 'lhe longitudinal arms it the members l0 and 12 are arranged in a line to one sid: ot' the central line which passes through the pointed extremity ot vhe almtu'ient H and the conical projection lT of the valve E) as clearly appears in Fig. Q.

When the parts are assembled as isshown in Figs. 1. and L of the drawings, the abutment 3 is so adjusted that the valve 9 iS Vforced down upon the seat, it being understood that pressure is normally applied to li't't the valve either by compressed air 4in the pipe to which the hub 5 is -onnected in a dry pipe system, or b y water under pressure in such pipe, in such systems wherein water is allowed,normally to rcst in the distributing pipes. Under cmulitions ote lire, the solder lil will be. melted and by reason ot' elle factthat there is but asingle thickness of .metal4 on either side of the solder, such solder will be quickly y'fused at such times.` /Vhen the solder is so fused the fluid pressure beneath the valve will immediately break joint between the elements and 12, owing to the fact that the line of 'pressure throughout is t out of line with the' longitudinal portions 1 thereof; The ' parts 10, 11 and 12 will be thrown out of .position laterally and apart,

` and the valve 9 will fly away from its seat,

so as to forma clear passage for the water Vwhich at. this time will be admitted through the hub 5. i This water will strike the upper in a ine spray throughout a considerable zone, as is common in this class of device.

It will be noted that while the lateral abutments act' to strengthen the device,

in that less dependence is placed upon the fsiblesolder union between the elements 10 and 12 and the element 11, and the engage' engage the Aextremities of the element 11 so.

that when the solder fuses there is no connection or engagement between them at all.

@The valve may be of any suit-able form :but preferably the face thereof is composed of two aluminum disks 18 with a disk 19 of cork between them. The aluminum is substantially non-corrosive and hence obviates any tendency f the valve to stick to lits seat, vdue to corrosion, while the cork forms a yielding cushion whose function is to absorb vibration, and lto permit the valve to be forced to its seat with a yielding pressure.

but in the same directiom said armsbeingv adapted to receive the holding pressure for.

4What I claim is: 1. A strut for sprinkler heads comprising a' pair of .flat members in alinement with each other, short arms projecting at right angles from `opposite ends of said members Jche'*sprinkler valve, and a liat connecting strip soldered to the side of said members opposite the arms, said striphaving a stud deiecting element- 16I and will be distributed projecting centrally therefrom in the direction of said armsbetween the ends of said members which are away from said arms.

2. A strut for Ysprinklerheads comprising a pair of flat members in alinement with each other, short arms projecting at right angles from opposite ends of said-members but in the same direction, said arms being adapted to receive the holdin pressure forr` the sprinkler avalve, and a at connecting strip soldered.. to the side of said members opposite Lthtaarms, said strip having a stud projecting centrally therefrom in the direction of said arms between the ends of said members which are away 4from said arms, said stud forming an abutment for the arms and .being provided with al shoulder to nor mally prevent lateral movement of said' ends.

T3. A strut for sprinkler heads comprising a pair of flat members in alinement with each other, short arms projectingA at right angles from opposite ends of said members but in theY same direction, said arms being adapted to receive the holding pressure for the sprinkler valve, and a flat connecting strip soldered t'o the side-of .said membersy opposite the arms, said strip having a stud projecting centrally therefrom in the direction of said arms between the ends of said members which are away from the said arms, said stud forming an abutment for the arms and being provided with a shoulder to normally prevent lateral movement of 'said ends, said abutting ends being sharpened.

4. A strut .for sprinkler heads comprising a pair of flat members in alinement with 'each other, short arms projecting at right angles from opposite ends of said members but 1n the same direction, said arms being 4adapted to receive the holding pressure for the sprinkler valve, and a fiat -connecting strip soldered to the side of said members opposite the arms, said'strip having a stud projecting centrally therefrom in the vdirection of said arms between the vends of said members whichl are away from said arms, said members having transverse abutments on theirsides to which said strip is soldered,y

in proximity to theopposite extremities of the strip.

JOSEPH A. MCELROY.

lVitness-es:

J. C. HARTMANN, LYMAN S. ANDREWS, Jr.

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