US800323A - Automatic steam-controller. - Google Patents

Description

PATENT-BD SEPT. 26, 1905.

No. 800,323. Y

' W. E. BUYS.

AUTOMATIG STEAM CONTROLLER.

APPLIOATION FILED FEB. 25. 1904.

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. UNITED sTArns lWIL-LIS' n'. BOYS, or NnwV YORK, N. Y.

AUTOMATIC STEAM-czolTnoLLIail Specification of Letters Patent. Y

Patented sept. 26, 1905.

Application fried February 25, 1904. serial Np. 195.203.

To a/ZZ whom t may concern."

, Be it known that I, WILLIS E. RoYs, a citizen of the United States, and a resident of the city of New York, Richmond Hill, borough of Queens, in the county of Queens and State of New York, haveinvented a new and Improved Automatic Steam-Controller, of which the following is a full, clear, and exact description. 4

The invention relates to heating systems for buildings; and its object is to provide'a new and improved heat-.controller especially designed for use on radiators and arranged to automatically shut off the heating medium in a room'whenever the temperaturethereof rises to a predetermined degree and in case the temperature falls below the predetermined degree to automatically turn on the heat to the room'. n l l The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming apart of this speciiication, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a side elevation of the improvements as applied to a steam-radiator. Fig. 2 is a-transverse section of the controller for the valve of the steam-inlet pipe of the radiator. Fig. '3 is'a similar view of the controllerfor the water-outlet valve of the radiator, and Fig. 4r is a front view of the controller for the inlet-valve ofthe radiator.

In the invention presently to bedescribed in detail use is made of the expansive force.

of a liquid capable of expanding under the heat of the room and to such an extent that at a predetermined degree of heat ina room furnished by a heating system of this ap-` quently a uniform heating of the whole buildto one end of a movable plate F, as plainly shown inFig. 2. A member H is located exteriorly of the radiator, and its upper end is secured to the pipe B, as at I. The lower ends of said plate F and member H are loosely connected together to permit the plate F to move angularly with reference to the member H. A thermostatA is placed on theouter side of the plate F at the lower end thereof. A plate S bears against the outer side o f the thermostat and is held in contact therewith by means of screws E, the threaded stems of the latter engaging threaded openings with which the member lH is provided. `Hence by turning said screws the said plate S may be adjusted so that n,the same may be cau'sed to press against the thermostat with any ldesired degree of force. A spring D, which is here shown as a .coil-spring, is placed between the upper portions of the plate F and member H and serves to lforce the said plate F outwardly.-

Since the thermostat and its connections and supporting'elements are disposed exte- -riorly of the radiator, the member H being spaced from the radiator and the plate F being on thegouter side of. the member H and spaced therefrom Iand the thermostat being on the outer side of the plate F, a free circulation of air is permitted between the radiator and the ,member H and between the latter and the plate F, so that the thermostat is controlled by the temperature of the room in which the radiator isA llocated asdistinguished from the temperature of the radiator itself.

'The action vis as follows.: When the temperature of the. room rises, say, to 7 OO Fahrenheit, the, liquid in the thermostat expands like mercury in a thermometer and causes the plate F to move inwardly and close the valve C. When the temperature of the room falls below7OO, the liquid inthe thermostat contracts, releasing the pressure on the plate F, and the spring D thereupon moves the said plate outwardly and causes the same to open said valve. By appropriately turning the screws E the pressure of the spring D may be regulated and the thermostat set to operate to close the valve at any desired degree of heat.

In the steam-inlet pipe B is arranged the IOO in Fig. 3 and contained in a chamber L, preferably disposed vertically and containing united metal bars N and N' of different expansibility and secured at their upper ends to the upper end of the chamber L, the bar N carrying at its free end a valve O, adapted to be seated on the inner end of a dischargeplug P, held adjustably in the chamber L and opening into a return-pipe Q for carrying the Water of condensation back to the steamboiler or other place. Now the steam from the radiator A, passing' by way of the discharge-pipe B into the chamber L, heats the bars N and N therein, so that the valve O is moved onto its seat on the plug P to close the latter, and thereby prevent escape of steam to the return-pipe Q. -Now when the steam in the radiator and in the chamber L condenses and the water of condensation in illing the chamber L reduces the temperature of the thermostat-bars N and N then the said bars iex in an opposite direction, and consequently the valve O is moved otf its seat on the plug P to allow the water of condensation contained in the chamber L to flow out through the plug P and to pass into the return-pipe Q. When the steam again passes into the chamber L after the latter is drained of water, then the thermostatic bars N and N again cause the valve O to move to its seat on the plug P to close the latter.

In order to prevent undue vibration or fluctuation of the valve O, owing to the expansion and contraction of the thermostatic bars N and N, additional united metal bars N2 and N3 are provided, secured at one end to the bar N and curved to press at their middle portion against the screw R of the chamber L and to press with their front end on the free end of the bar N, so that when the auxiliary bars N2 and N3 expand with the bars N and N', as previously described, then their free ends press against the bars N and N to hold the Valve O firmly to its seat, and thus prevent undue vibration of the valve O and hammering of the valve in the water, as is so frequently the case with thermostats of this construction not provided with the auxiliary bars N2 and N3.

The screw R is used to adjust the bars so that proper expansion will be secured to just seat the valve O at 2120 Fahrenheit.

Now from the foregoing it will be seen that the inlet of the steam to each radiator is controlled by a thermostat actuated by the expansive force of a liquid conlined in aclosed chamber and the discharge of the water from the radiator is controlled by a thermostat actuated by the steam and water ol condensation ot' the radiator.

The device is very simple and durable in construction, can be cheaply manufactured and readily applied to radiators as now constructed, and it is also very evident that the device may be readily applied.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In combination with a radiator havinga supply-pipe and a controlling-valve therein, a member secured to the said supply-pipe and disposed exteriorly ot' and spaced from the radiator, a movable plate spaced from and disposed on the outer side ol said member and connected to the valve to control the latter, a spring to normally open said valve, and a thermostat on the outer side of the movable plate and adapted to operate the same to close said valve.

2. In combination with a radiator, a pipe communicating therewith and having a valve, a member secured tothe said pipe and disposed exteriorly of the radiator, a plate movable toward and from said member, disposed on the outer side thereof and connected tothe valve, a spring to move the movable plate iu one direction and a thermostat also disposed exteriorly of the radiator, and spaced from the said member, said thermostat being effective to move the movable plate in the reverse direction.

In testimony whereof I have signed my name to this specilication in the presence ol two subscribing witnesses.

WILLIS E. ROYS.

Witnesses:

EDWARD Lrsii, C. S. GULICK.

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