US549035A - Thermostat-regulator - Google Patents

Description

(No Model.) l

H. A. T OBBY. THERMOSTAT REGULATOR. l l No. 549,635. a PatentdctfZQ, 1895.

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THERMOSTAT REGULATOR. NQ. 549,035. A Patented Oct. 29', 1895.

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PATENT HENRY ARCHIBALD TOBEY, OF TOLEDO, OHIO.

TH ERIVIOSTAT-REGULATOR.

SPECFICATION' forming part of Letters Patent No. 549,035, dated October 29, 1895. Application filed September 4, 1894. `Serial N0.522,124. (No model.)

To all whom t may concern: f

Be it known that I, HENRY ARCHIBALD TOBEY, a'citizen of the United States, residing at Toledo, in the" county of Lucas and State of Ohio, haveinvented certain new and useful Improvements in Thermostat-Regulators; and l do hereby declare the following to beV a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in thermostatic devices.

The object of my device is to mix hot and cold Water or other liquids so that the mixture may be discharged at a uniform temperature regardless of the variations in temperature of either the hot or cold liquid entering the device.

Figure l is a top plan of the device. Fig. 2 is a side view of one of the bars supporting a lever. Fig. 3 is a front view with valves and lever removed. Fig. 4 is a vertical section on line a: a; of Fig. 1. Fig. 5 shows an external end view of one of the castings O for supporting an expansive member.

Referring to the drawings, A and A are two tubes or pipes, made of brass or copper or a material having a large ratio of expansion by heat, and which are fastened rigidly at opposite ends into castings or boxes O and O. Box O has a chamber O2, with which the tubes A and A communicate. Box O has a chamber O3, with which the-tubes A and A also communicate, and is provided with a discharge-pipe.

E and E are bars, made of cast-iron or some material having a low ratio of expansion by heat, and are united one wit-h the other by end straps a and a. They are supported in the respective boxes C C by being provided at their opposite ends with lugs f and f', which t loosely into sockets at m in the boxes. The bars E E constitute a stationary frame, on which is mounted a lever B, pivoted at one end on a pin b between the bars E E. The lever B extends at its opposite end through a central opening e in box O and is bifurcated at that end to embrace a valverod J outside of box O. Box C has fitted onto it at c and c valve-chambers, in which are seated valves D and D'. The valve-chambers communicate with thechamber O2 of water-box O through ports d and d', respectively. Into the center of box C extends a screw G, which is in con tact with the inner end of a rod H. The outer end of rod H is provided with a knife-edge 7i, which is adapted to engage with a shoulder on the head of lever B, The rod H is held from turning by means of a screw g, which enters a slot made inthe side of the rod, while at the same time the rod is free to reciprocate.

The bifurcated end of lever B presses against a disk n, which is rigidly fastened to rod J. The valve D is on rod J and the valve D on rod J.

K is a cylinder or barrel closed at both ends and inclosing spiral spring lc. Within the cylinder K is a disk rigidly fastened to the top of valve-stem J. The stem J is rigidly fastened to the upper end of barrel or cylinder K.

L is a weight supported on barrel K, which tends to hold valve D closed and valve D open.

M is an inlet for cold water, and N is an inlet for hot water.

Having thus described the various parts of my device, the operation is as follows: When cold water enters valve D and hot water enters valve D', they mix in chamber C2 of box O and pass through pipes A and A to the discharge or outlet from the box C at F. Should the water passing through said pipes A and A cool, said pipes will contract or shorten, and the motion thus obtained will be imparted through rod H to the shoulder of lever B at h, the fulcrum of said lever being fixed in stationary bars E and E. The outer or right-hand end of lever B will be lifted upward, overcoming the pressure of Weight L andcarrying with it valve-stems J and J', which movement opens Wider valve D', admitting more hot water and tending to close valve D, lessening the amount of cold water. When the temperature of the mixed hot and cold water again becomes warmer, said pipes A and A will expand or lengthen and allow the outer o r right-hand end of lever B to descend, thus tending to close valve D', lessening the amount of hot water admitted, and open wider valve D, increasing the amount of cold water admitted, thereby maintaining a uniform temperature of the water discharged from the apparatus. Spiral spring 7c in barrel K is for the purpose of guarding against breaking or straining the apparatus when the temperature gets below the point where valve D would be closed. Should the temperature get below this point, the spring would be compressed as lever B is lifted upward and prevent straining or breaking. It is obvious that the farther screw G is screwed inward the more pipes A and A must expand before lever B will allow valve D to close; therefore the warmer the water must be that is being discharged.

Although not shown, I anticipate that screw G could be connected with a dial or hand for indicating the temperature of the water discharged by a similar mechanism to that shown in connection with another device of mine7 de scribed in my application, Serial No. 512,898.

I-Iaving thus described my invention, what I claim is- 1. A regulating apparatus consisting of a receiving and a discharging chamber, in combination with two valve chambers and valves therein for supplying said receiving chamber with liquids of different temperatures, expansion tubes connecting said receiving and discharging chambers and through which tubes the liquid is conducted, a stationary frame between the said chambers and the said tubes, a lever pivoted to said frame and connected to the valve rod, said lever operated by the expansion and contraction of said tubes, and said valves operated by said lever, substantially as described.

2. The combination with the receiving and discharging chambers and the connecting eX- pansion tubes, of the connected stationary rods between said tubes, said rods being of less expansive quality than the tubes, and on which rods the opposite chambers are free to move, a fulcruined lever provided with a shoulder and connected to said stationary rods, a rod connected to said discharging chamber and adapted to engagethe shoulder of said fulcrurned lever, a valve rod to which said fulcrumed lever is connected, and valves operated by said valve rod, substantially as described.

3. A regulating apparatus consisting of eX- pansible members forming a loop, a support for said loop, in combination with an adjustable rod connected with said members, a stationary frame between the said members, a lever fulcrumed to the said frame and in contact with said rod, said lever operated through said rod by the expansion and contraction ot said members, and a valve operated by said lever controlling the medium which affects the eXpansible members, substantially as described.

In testimony whereof I afx my signature in presence of two witnesses.

HENRY ARCHIBALD TOBEY.

Witnesses:

I-I. C. IIAYs, F. D. ELMER.

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