US 998574 A
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Description (OCR text may contain errors)
J. R. HAMILTON.
AUTOMATIC SPRINKLER HEAD.
APPLICATION FILED JULY 6.
Patented July 18,1911.
m n N M Vh W ATTOB/VE rs UNITED STATES PAT are,
JOHN R. HAMILTON, 0F YONKERS, NEW YORK, ASSIGNOR TO AT T TOMATIC SPRINKLER- COMPANY OF AMERICA, OF NEW YORK, N. 1 A CORPORATION 013 NEVT YORK.
7 Specification of Letters Patent. Patented July l ft, li ht Application filed July 6 1910. SeriaI Nc. 570.537.
To all whom it may concern:
Be it known that I, JOHN R. I'IAMILTON, a citizen of the United States, and resident of Yonkers, VVestchester county, New York, haveumade certain new and useful Inventions Relating to Automatic Sprinkler- Heads, of which the following is a specification, taken in connection with the accompanying drawing.
This invention relates to automatic sprinkler heads and relates especially to sprinkler heads having a resilient diaphragm or other resilient disengaging means associated with the cap closing the discharge nozzle so as to facilitate the disengagement of the parts during the emergency operation of the head. I
In the accompanying drawings showing in a somewhat diagrammatic manner an illustrative embodiment of this invention, Figure l is a vertical sectional view showing the head in normal set position, Fig. 2,
is a corresponding-view showing the parts during the emergency operation of the head, and Fig. 3 is a partial top view of the diaphragm and cap.
In the illustrative embodiment of the invention shown in the drawings, the head 9 may be cast integral withthe frame 5, 7, which may carry at its upper end a suitable lug 4 in which is mounted the adjusting screw 2 to which the deflector 1 may be secured if desired' The head may be formed with the seat 10 and nozzle 12 and with a threadedportion 11 to cooperate 'with the distributing pipes 13 of the system.
A suitable cap 16 which may be of metal may cooperate with the seat 10 and if desired, the light metallic washer 14 may be interposed between these parts. The'cap which may be stamped up out of brass or other heavy sheet metal may be provided with the downwardly extending alining shoulder or projections 15 coiiperating with the seat to efi'ect the alinement of the cap with respect thereto, and the cap may also be conveniently formed with a suitable internal pedestal 20 by dishing upward the central portion of the metalwhich also gives it considerable rigidity. Suitable resilient disengaging means may be associated with the cap to promote the disengagement of the parts during the emergency operation of the head and for this purpose a resilient plate or diaphragm of any desired form and construction may be arranged to cotiperate with the cap. The diaphragm 18 may bein the form of a circular disk of phosphor bronze or other resilient material and may he supported in the recessl'? formed in the upper portion of the cap which serves to protect the coi'Sperating edges of these parts. This diaphragm may be formed with aiining means such as the socket 19 with which the releasing retainer coiiperates to hold the cap upon the seat. It is also desirable to prevent exccssivejdeflection or bending of the diaphragm and consequent permanent set which would impair its resiliency and for this purpose a suitable diaphragm lug 4.0 may be formed on the diaphragm adjatit) cent its central portion to cooperate with the pedestal 20 of the cap and prevent further distortion of the diaphragm by the'retainer As is indicated in i and connected parts. Fig, 2, a clearance of several hundredths of an inch may be allowed between the lug 40v and the cotiperating pedestal-2G so that the parts tend to-separate to this extent and correspondingly disengage the. cotiperating parts of the retainer during the emergency operation of the head.- v
'The thermally releasing retainer may be in the form of a collapsing strut comprising a-strut lever 21 cm'iperating with the socket l9 in the diaph mgm and provided with a suitable knife edge or pivot 22 engaging the corresponding bearing recess 23 in the other strut lever 31, the upper end of which may engage a suitable seat 3 in the adius'ting screw 2. The strut arms 24,30, may he of any desired construction and be provided with the slots 25,29, in which a fusible link of anydesited construction may be normally held by suitable lugs such as 28. This thermally releasing or fusible link may coniprise the outer member 26, having the flanges 27 and the inner member 46 soldered or otherwise releasahlysecured thereto and provided with the flanges at? engaging. the arm 24:. It is of course understood that in setting a head of this description the parts are loosely assembled and'then the adjust Mitt ing screw 2 is forcibly brought. down upon q the'retainer so as to exert the normal workt ating with said seat nently held in its adjusted position as by a suitable pin 41 which may be passed I through this screw and its lug 4. 111 case members and if desired, suitable knife edge projections 6, 8, may be formed on the frame'to prevent undesirable contact of the retainer therewith.
Having described this invention in connection with illustrative embodiments, forms, proportions, materials and methods of operation, to the details of which disclosure the invention is not of course to be limited, what is claimed as new and what is desired to be secured by Letters Patent is set forth in the appended claims. 1. The automatic sprinkler head comprising a valve seat and frame, an adjusting screw and attached deflector mounted in said frame, a washer engaging said seat, a cap cooperating with said seat and having a 'depending alining shoulder, an upwardly projecting internal pedestal and a recess formed on its upper-edge, aresilient disk diaphragm mounted in said recess and provided with a socket and with a diaphragm lug to cooperate with said pedestal and limit the downard deflection of said diaphragm and a thermally releasing retainer engaging the recess in said diaphragm and said adjusting screw and comprising collapsible strut arms and a fusible link disengageably connecting the outer portions of said strut arms.
The automatic sprinkler head comprising a valve seat and frame, an adjust-ingscrew mounted in said frame, a cap cooperand having alining means, an upwardly projecting internal pedestal and a recess formed in its upper edge, a resilient diaphragm mounted in said recess to cooperate with said pedestal and limit the downward deflection of said diaphragm and a thermallyreleasing retainer cooperating with said diaphragm and said adjusting screw.
3. The auton'iatic sprinkler head comprising a valve seat and frame, a cap cooperating with said seat and having alining means and a pedestal, a resilient diaphragm mounted on said cap to cooperate with said pedestal and thereby limit its deflection and a thermally releasing retainer between said diaphragm and said frame.
l. The automatic sprinlk'ler head comprising a valve seat and frame, a cap cooperating with said seat and having a pedestal and a recess formed in the upper edge of said cap, resilient disengaging means mounted in said recess to cooperate with said pedestal and thereby limit the deflection of said disengaging means and a thermally releasing retainer between said frame and said disengaging means.
The automatic sprinkler head comprising a alve seat and frame, an adjusting screw mounted in said frame, a ca c0- operating with said seat and formed with a recess, resilient disengaging means cooper ating with said cap and having its edge fit-' ting closely within andprotected by said recess, a thermally releasing retainer interposed between .said adjusting screw and said disengaging means and devices comprising a substantially rigid projection on said cap to limit the deflection of said disengaging means.
6. The automatic sprinkler head com rising a valve seat and frame, adjustable tightening means mounted in said frame, a cap cooperating with said seat, resilient disen' gaging means cooperating with said cap, a.
releasing retainer interposed between said tightening means and said disengaging means and a substantially rigid projection on said cap to limit the deflection of said disengaging means. a
(. The automatic sprinkler head compris- .ing a valve seat and frame, adj ustablc tightening means mounted in said frame, a cap cooperating with said seat and formed with a recess, a resilient diaphragm mounted in said recess and having its edge protected thereby, a thermally releasing retainer interposed between said tightening means and said diaphragm and a substantially rigid projection on said cap cooperating.
with the central portion of said diaphragm to limit its deflection.
JOHN R. HAMILTON. Witnesses:
HARRY L. DUNCAN,- Jnssin B. KAY.