US1163974A - Relief-valve. - Google Patents

Description

L. M. COOPER.

RELIEF VALVE.

APPLICATION FILED mm: 22. I914.

1,163,974. tented Dec.14,1915.

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LYMAN 1VI. COOPER, OF DETROIT, MICHIGAN.

RELIEF-VALVE.

Specification of Letters Patent.

Patented Dec. 1 1, 1915.

Application filed. June 22, 1914. Serial No. 846,506.

To all whom it concern Be it known that I, LYMAN M. COOPER,

' a citizen of the United States of America,

residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Relief-Valves, of which the following is aspecification, reference being fhad therein to the accompanying drawings.

This invention relates to steam traps espe cially adapted for removing the water of condensation from radiators, steam coils and other parts of steam heating systems in which a low pressure or partial vacuum is maintained.

This invention relates to that type of trap wherein a float is'employed to automatically control a discharge of water and prevent the waste of steam, and the primary object of this invention is to furnish a trap of the above type with a novel valvular member and vent that insures a positive operation ofthe trap under normal conditions, the trap having provision whereby the valvular member can be manually operated should it have a tendency to stick in its seat orotherwise become impaired.

A further object of this invention is to provide a float actuated valve for traps that has a. novel adjustable stop for limiting the action of the valve and consequently the withdrawal of water from a heating system.

The above and other results are attained by a mechanical construction that will be hereinafter specifically described and then claimed, and reference will now be had to the drawing wherein Figure l is a vertical sectional view of a trap in accordance with this invention, showing the valve thereof in open position; Fig. 2 .is a horizontal sectional view taken on line II--1I of Fig. 1 with the casing of the trap partially broken away; and Fig. 3 is atransverse sectional view of a portion of the trap, illustrating a stufiing boX gland.

In the drawing 1 denotes a cylindrical trap casing having a conveXo-concave bottom 2 provided with an eccentrically disposed and depending drain connection 3. The connection 3 has a" seat 4c in the upper end thereof and the lower end interiorly screwthreaded, as at 5, to receive a suitable drain pipe. Mounted in the seat 4 of the connection 3 is the lower end of a tapering plug 6 and the upper end of said plug has a transverse bore 7 to accommodate a valvular member 8. The member 8 has a longitudinal bore 9 and a radially disposed port 10 adapted to communicate with a longitudinal port 11 in the plug 6. The lower end of the port 11 is enlarged and the walls thereof screwthreaded, as at 12, whereby a bolt 13 can be placed in engagement with the plug 6 to facilitate mounting the plug in the seat 4: of the connection 3. For 111- stanc'e,an apertured plate 1 1 can be placed against the lower end of the connection 3 to receive the bolt 13 prior to securing the same in the plug. As the bolt is rotated and screwed into the plug, the plug is seated and becomes a permanent fixture of the trap caslng. The bolt 13 and the plate 14 can then be removed and the pipe or other con- .duit secure-d into the connection 3.

The ends of the valvular member 8 ter-.

minate in rectangular shanks or studs 15 i and sprung over the ends of said member are the side arms 15 of a stirrup 16. This made of ametallic strap possessing sufficient resiliency to be bent upon itself and the ends thereof sprung into engagement with the ends. of the valvular member,although any suitable connection can be made between said member and the stirrup as to insure the lattenbeing fixed relative to the former. The twoly end of the stirrup is slotted, as at 17-, an extends into the bifurcation 18 of a depending float rod 19. A. pin 20 is arranged transversely of the bifurcation 18 and extends through the slot 20 to loosely articulate said rod and stirrup. The rod 19 depends from the bottom of a cylindrical float 21 and the top of said float has a concentric vertical tube or upright 22 to receive a stem 23. The inner or lower end of the stem is longitudinally slotted, as at 24, and extending through said slot is a stop pin 25, carried by the tube or upright 22.

The upper or outer end of the stem 23 extends through a stuflingbox 26 concentric 7 same.

provided with a union fora coupling 32 whereby the trap can be connected to the pipes of the heating system.

v The port 11 is concentrically of the plug ,7 '6 and to one side of the port 11 and the bore 7 is an angularly disposed port 33 communieating with a socket 34: in thetop'of the plug. Mounted in the socket 3% is the lower end of a vertically disposed vent tube 35 or registration with the port 11 of the plug '6 and thus allow water to drainifrom the trap. v V

The stem'23 is frictionally held by the stufling box and by raising and lowering said stem the movement ofthe float 23 can'- be regulated whereby prescribed quantities of water can accumulate in the trap casing before the valve is actuatedto liberate the Should for any reason the valvular member stick in the bore 7 or articulated members of the device become stiff and impaired, the link 30 can be gripped and the stem 23 reciprocated in the stuffing box to m anually move the valvularmember and its connections. The link 30 also facilitates shifting the stem to regulate the action of'the float.

One embodiment of my invention has been illustrated, but it is to be understood that the structural elements are susceptible to such variations and modifications fall within the scope of the appended claim. What I claim is A steam trap comprising a casingflhavinga lateral inlet connection anda vertical outlet connection, a tapering plug seated in the inner end of said outlet connection and provided with a transverse bore having the ends thereof open, said plughavinga longitudinal port establishing; communication .between the bore of said plugand-the lower end thereof, said longitudinal port having the walls thereof fora portion of its length threaded to receive adevice adapted vto be placed against the outlet connection to for cibly seat sa1d plugln sa dconnection, a valvular memberin the bore of said plug and having a longitudinal bore with the ends opemng 1nto said casmg, said valvular memher also having a radial port intermediate the ends'thereof adapted to communicate with the threaded port of said plug, said plug having a port therein, a vent. tube in communication with the port of-said plugg an adjustable stem supported by the top of said casing, afloat guided byr said stem,said

valvular member having the ends thereof terminating 1Il rectangular shanks, a stirrup connected to saidfioat and having side armssprung over the shanks of said valvular member to move 1n synchromsm therewith,

' and means in connection with said r stem' to llmlttlle actlon of said float.

'In testimony whereof I affix my signature in presence of'two witnesses f V LYMAN Moonrise.

lVitnesses: 7 i

OTTO F. BARTHEL, ANNAM. Dona.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. p V

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