US1038159A - Thermostatic valve. - Google Patents

Description

; L. S. LAWSON.

THERMOSTATIG VALVE.

APPLICATION FILED H0V.10I 1911.

I Patented Sept. 10,1912.

mwrarrronfzamm- LINDLEY s. Lawson, osrromnsrnan,PENNSYLVANIA, nssreno n TO LAW on'lvranu- FACTURING COMPANY, or HOMESTEAD, rnrgnsrr UNITED srnzrnsj ran-TENT ounron PENNSYLVAIF'IA.

VANIA', A oonro A'IIONV on 'rHERMos'raTro VALVE.

To on whom it may concern: I

Be it known that I, LINDLEY S; LAWSON,

a resident of Homestead, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improve ments in Thermostatic Valves, of which the following is a specification. I

This invention has particular reference to a thermostatic valve for automatically controlling the flow of gas to'a water'heater, and the general objects are to provide a new and improved valve construction, and improved means for varying the throw of the valve and thereby adjusting it for different temperatures of water.

Inthe accompanying drawings, Figure '1 is a longitudinal section of valve mechanism constructed in accordance with the inven tion. Fig. 2 is a view in perspective of the valve mechanism with the cap-like temperature adjusting head separated from the valve actuating rod. Fig. 3- is a similar View 'with theparts fully assembled.

Referring to the drawings, 2 designates a valve body constructed with gas inlet 3 and v outlet 4 which communicate with the body at opposite sides of seat 5 on which operates valve 6. Body 2 is formed with an opening facing the seat which is closed by head 7 the body having a rim-like extension 8 outwardly from the opening, at one side provided with. temperature indications 9. Body 2 is formed with a tubular threaded extension 10 adapted to be secured in the wall of a stand boiler or other water container, not shown, and projecting from extension 10 into the interior of such boller is the thermostatic tube 11, formed preferably of co per, provided at its outer end with socket 12.

Secured'to and projecting from valve 6 is the iron or steel rod 13 which extends into tube 11, and at its outer end is threaded at 13 to adjustably engage socket 12. Valve 6' is constructed with the central stem 14, with which rod 13 is in alinement. The stem extends through stufling box 7- in head 7,- and is milled at 15 to receive the cap-like with which the vv1de a firm hand-hold for bypass 22, controlled by operating with the seat Serial in. 659,580.

Specification of Letters Patent, Patented Sept. 10 1912 Application filed November 10, 1911.

pointer .20 on the; head is adapted to cooperate, A lug 21 on the under side of head'16 moves in slot 8 in rim '8 and'limits the adjustment of the head. The periphery ofhead 16 ifs-milled at 16 to proadjusting the same. I

' Withutube 1 1 and rod 13 formed ofmetals having different coefficients of expansion, it

will'be understood that the heating and expanding of tube ll'by the water within the boiler will move rod 13 longitudinally and seat valve 6 and-shutofi the flow of gas 'to theheating means, while contraction of the tube will move outwardly and unseat the valve. IAnd byadjusting the threaded connection of the rod by means of head 16, the valve may be caused to close when the water attains'any desired temperature, the partsbeing so accurately connected by the described construction that the valve will close when the water attains the temperature des-, lgnated by the pointer 011 the scale of temperature appearing on the valve body.

To prevent the heaterafrom being entirely extinguished valve 6 may 'be provided with the adjustable plug 23, so that even when the valve is closed and the main supply cut ofi sulficient gas will pass to sustain a pilot light for igniting the flow when the valve opens. p

1. The combination of a valve body having a gas inlet and a gas outlet, the body having a valve seat interposed between the inlet and outlet and with the body open outward-1y from said seat and threaded internally, a threaded head fitting within and closing the open portion of the body and provided with a central opening, a valve 00- and movable between the latter and said head and having a stem which extends through the head opening, a

cap-like head secured to the projecting stem and fitting and rotatable relatively to the body, a tubular thermostatic device extending from the valve body, and a rod secured to the valve and adjustably connected to the thermostatic device. v

2. The combination of a valve' body having a valve seat and at one side a rim-like extension and with temperature indications on said extension, a valve a thermostatic device projecting from the valve body, a rotatable rod secured .'to the valve and having threaded connection with the thermostatic device, and a cap secured to the valve and flanged to' inclosethe rim-like extension of the body, the'flange of the cap being recessed to expose said temperature indications, and the cap having a pointer for registering with one or another of the indications.

3. The combination of a valve body constructed at one side with an annular slotted extension a thermostatic valve, a valve operating rod rotatable for varying the throwof the valve, a headsecured to the valve adjacent the annular body extension,

nular extension for limiting the movement of the head, the body having temperature indications, and the head having a pointer.

for determining the temperature at which the valve is set to close.

4. The combination of a valve bodyhaving a gas' inlet and a gas outlet, the body.

, a lugon the head movable in the slot of the anhaving a valve seat interposed between the inlet and outlet; and with thebody open outwardly from said seat, ahead secured within and closing the open portion of the bodyand provided with a central opening, a

valve cooperating with the seat. and movable between the latter and said head and having a stem which extends throughthe head opening, a head secured to the projecting stem and closing the. outer open portion of LI'NDLEY s. LAWSON.

Witnesses:

M. F.- HILLMAN, JOHN W. BAINBRIDGE.

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