US1875929A - Valve device for connection to alpha hot water supply - Google Patents

Description

L. D. LOVEKIN Filed May 1, 1931 VALVE DEVICE FOR CONNECTION TO A HOT WATER SUPPLY Sept. 6, 1932.

Patented Sept. 6, 1932 UNITED STATES" A ENTFO F LUTHER n. LOVEKIN, or VILLA'NOVA; EE'NNsrE ANm VALVE :oEVIoE Eon. coNNEcTIoN To A nor, warm surrLY Application filed May 1, 1931. Serial No, 534,167. I

The principal object of the present invention is to provide a device of the character referred to with an'improved type of valve;

another object is to simplify and improve the construction, arrangement and operation of the various parts another object 'is'to" facilitate theoperation of servicing or readjusting the valve device; and another object is to provide a convenient, accurate and re- 39 liable valve device constructed either to re-' spond to temperature change alone or to either or both temperature change and pressure change due to change of temperature of the water. i s Other objects of the invention will'appear from the followingdescription at the end of which the invention will be claimed, but, generally stated, the invention may be said to comprise a valve device adapted for connection with a hot water supply and comprising a two-partvalve casing of which one part is provided with a stem guide and with a oylin drical chamber and of which the other part is provided with inlet and outlet openings and with araised valve seat between said openings, a pistonmovable in said cylindrical chamber and provided at one end with a fiber face adapted for cooperation with said raised seat and at the other end with a cavity, a fusible metal body arranged inthe cavity and accessible upon separation of the two parts of the casing, a stem movable through the stem guide opening and having at one end a tapered head seated on said body, and 33 screw means accessible from the outside of the device and arranged for operation at the other end of the stem. p

The invention also comprises the improveclaimed.

In the following description reference will 4 Figure 1 is a central vertical sectional view ments to be presently described and finally i of a device embodying features of the inven- 7 tion and responsive to both temperature and pressure changes of water, and

" Fig. 2 is a similar view of a valve device responsive to temperature changes only.

. Referring tothe drawing and more parti'c- 50 ularly to Fig. 2, 1 and2 indicate the parts of aitwo-part valvezc'asing. The part 1 isprovided withaninlet opening 3 and an outlet opening 4, and"with a raised valve seat .5. arranged between said openings. The part 2 is'provided with'afstem guide 6 and withacylindrical 'chamber' or cylinder 71' 8 is a piston'movable i'n'the cylindrical chamber 7 and it" is provided-at one. end with a head having a fiber-face 9 adapted for cooperation at with the raised sleat 5. At theother end of the pistonthere-is a'cavity 10. 11 is a'fusiblebody" arranged in: the cavity andit is acces-J sible upon separation of the parts land 2 of the casing. -12 isZ-astem movable through the stem guide opening 6, and it is provided with'a tapered head '13 seated on the body 11. There are'screw means accessiblefrom the outside of the device and they are ar-' ranged to operate at the end of the stem opposite to theheadx13, As shown" in Fig. 2, these means comprise a threaded portion 14 and the-hand piece 15. The operation may be described as follows: i

The inlet opening 3. is connected with a sup- 7 ply of hot waterand as the temperature of the water rises, 'heat is conducted throughthe piston 8 to the fusible/body 11 whichbeing softened by the heat permits the piston 8 to recede or rise into the cylindrical chamber 7, lifting the valve 9 fromits seat 5 and embed 1 ding the end of the head 13 in the body 11. As the valve 9 rises, hot water passesit and escapes through the outlet opening 51, for example to a waste'connection. Thereafter and when the temperature of the water has been lowered and the body 11 has sufliciently solidified, it ispossib'le' to close the valve 9 on its seat 5 by turning the handle 15 and by that simple operation the valve device has been 11. When the head'13 is of tapered form, the

removal of the deformed body is'facilitated' because it can be readily separated from-the head 13. Under normal conditions water at the inlet 3 is entirely excluded from the body 11, which is desirableas the'aHoysef which" p the bodies are made are afl'ected by water, .and

underno circumstances does sufiicient water ever contact with'the body 11..;to,substantial? I ly .aflect it. The piston-Sand its cylinder serve-the purposei ot sufliciently excluding water from the- -"lIhe;construction.-and mode of openatitiniof the valve deviceill-ustratediina Fignl are-as I has been above described in; connectiom with Fig.1 2 except. as-followslt' I: i

The valve device shown'mrFig; 1:. is; responssiveito achange imtemperature of the: water a'ndralsoto changein pressure of theawraaerin;-

by changein temperature: oiithe water; Thereis arbonnet 1c detaehablysecured to the part 2 of the. valve casing: audit, together with'thez'part 2;.provides4ahousing l'i for a spring'rld which presses; on the stem 12 also: on-the. support 19: A set' screw 20 extending'throughthe to ofthebonnet presses support 19, and'the set screw 20 may be adjusted to change-- the pressure ef the v I spring'I B. 21' is a cap moant'ed on thet'op'of th'ebonnet and it eneloses-th'e set scrvewz' 22 is a basket cup in which-is? placedthe body 11 Audit facilitates the removal 0*! the body after ithas'beensofla'ened and hasagain set or become solid. As in pressureofthe water at the inlet 3, ihsufici e'nt te -raise thetemperatureof thewater sufiici entlyto soften'the body 11, causesthe pistorr8 to'rise and clear the valve 9- from the seatfi against the pressure of the spring 18 actingthrough'thestem I2 and through. the body 115. 'A suflicient rise in temperature Ofthf water softens the body 11 so that it is deformedand the piston 8'may rise, without compressing the spring 18; It is annadvantage. inreservicing; the; valve.- def vicetliatthe parts 2 and. 16" are removed asa unitary structureanrl thereforethe setting, of thetensien of the may not beaccidentally changed,

1 It will beoblviouste-those skilled inethe-artv towhiclm the invention relates-than modificati'ons may be made in. details oi'consteueti-oia' mmdiarrangement and? matters-oi mere: form departing-fromthe spiritof? the/in.-

or otherwise than the prior art and the appended claims may require.

I claim: V 1. A valve device adapted for connection with a hot water supply and comprising a two part valve casing of which one part is provided with a stem guide opening and with a cylindrical chamber and of which the other part is provided with inlet and outlet openings and with a raised valve seat between said openings, apiston movable in said cylindrical chamber and provided at one end with ahead 7 at one end a tapered head seated on said body, 7 and screw means accessible from the outside oi the; device and arranged: for operation at the: other end of thestemvfor holding. said,

head seated-on said body.

, 2; A. valve device adapted for connection with" a hot watersu-pply and comprising atwo-part valve casing of which one part is provided'witha cylindrical chamber and of which the-ether part is provided with inlet and outlet openings and with a valve seat between said openings, a piston movable in said cylindrical: chamber and. provided with a headatoneend and having a; fiber face adaptedfor cooperation with saidseat, a; fusible, metal body arranged at the end-oi, the piston opposite the fiber face andaccessibleupon separation of theetwowparts ofthe casin-g,; and a stem held seated on saidbody. y" r 3'. A valve device adapted for'con-nection with ahot. water supplygcomprising-a twov partval-ve casingof whichcone part is provid'edwith astemguideand with a cylindricat chamber and of. which-the other part isprovided-i with-inlet and outlet. openings" and with a.. valve seatobetween said openings, a pistonmev-able in saidcyli-ndrical chamber and provided; at one end with a head-having a faceadapted for cooperation with the valve seat, a fusible: metal body arranged-- at the end of thepisten. opposite said face', a; stem movable through the stem guide opening, a homnet detachably connectedwith theifirst men? t-ioned-part of the casing, a spring housed-in thebonnetand last mentioned part of the-cas ing andarranged for-operation onthe stem and a set screw for adjusting the tensionrof the: spring;

4:. A valve device adapted. for connection with a hot water supply comprising atwo part valve casing oi which: onepart 1s pro-- vided with a stem guide and with a cylindrical chamber and of which the other part isprovidedwith inlet andoutl ret openings" and with a valve seatbetween'said openings,

a. piston movable in said cylindrical chamber and provided at one end withahead having a}

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