US749396A - Regulating-valve - Google Patents

Description

PATENTED JAN. 12, 1904.

N. E. NASH.

REGULATING VALVE.

APPLICATION FILED JUN 19, 1902.

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H0 MODEL.

No. 749,396. PATENTED JAN. 12, 1904.

' N. E. NASH.

REGULATING VALVE.

APPLIUATION FILED JUNE 19, 1902.

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UNITED STATES Patented January 12, 1904.

PATENT OFFICE.

. NATHAN E. NASH, OF TORONTO, CANADA, ASSIGNOR TO THE NASH REG-U- LATING VALVE COMPANY, OF DETROIT, MICHIGAN, A CORPORATION REGULATING-VALVE.

SPECIFICATION forming part of Letters Patent No. 749,396, dated. January 12, 1904.

A li ti fil d June 19, 1902. Serial No. 112,356. (No model.)

/ To all whom it may concern:

Be it known that I, NATHAN E. NAsI-I, of the city of Toronto, in the county of York and Province of Ontario, Canada, have invented certain new and useful Improvements in Regulating-Valves; and I hereby declare that the following is a full, clear, and exact description of the same.

This invention relates to certain new and I useful improvements in that class of regulating-valves shown and described in my applications for Letters Patent, filed June 17, 1901, Serial No. 641,949, and July 20', 1901, Serial No. 69,149, in which I have shown and described the regulating-valve as consisting of a casting provided with inlet and outlet channels communicating with a chamber having a valve to control the flow of the operating fluid therethrough and an escape-duct to relieve the pressure in the outlet-channel when the flow of the operating fluid fromthe inlet:

channel has been cut off.

The object of the present invention is to simplify the construction and operation of the l p 2 5 regulating-valves shown and described in the above applications, so as to attain a positive and instantaneous action of the operating parts when the temperature has Varied from the normal. I 3 In carrying out this invention I employ substantially the same system ofintercommunicating inlet and outlet channels shown and described in the above applications, and control the flow of the operating fluid there- .35 through by a valve actuated by the accumui channel.

To regulate the accumulation of the operating fluid in the accumulating-chamber of motor, the said chamber is fitted with a small outlet-port which in certain circumstances hereinafter described is closed by a thermostatically-actuated valve and is supplied with the operating fluid by a diminutive channel in communication with the inlet-channel of the regulating-valve.

For a more complete description of the construction and arrangement of the parts and operation of the invention reference should be had to the following specification and the accompanying drawings, in which like letters of reference refer to like parts.

In the drawings, Figure 1 is an elevation showing a radiator with its steam valve, an operating-fluid tank connected bya pipe with the radiator-valve, and a regulating-valve in the said pipe to control the flow of the operating fluid to the radiator-valve. Fig. 2 is a perspective view of the regulating-valve, showing its external appearance. Fig. 3 is a vertical section through the regulating-valve. Fig. 4 is a perspective View, partly in section, of the fluid-controlled valve and a disk to which it is attached by means of a valve-stem. Fig. 5 is a perspective view of the said disk alone. Fig. 6 is a perspective view of a plug in which the valve-stem moves. Fig. 7 is a perspective view of one of the rotary valves for the inlet-channel. Fig. 8 is an enlarged partlysectional view of the lower end of a thermostatic blade and its valve, together with the devices whereby the said valve is adjusted with respect to the said blade, as hereinafter described.

In the casing a of the regulatingvalve is an inlet-channelb,l1aving a rotary valve 0 to regulate the volume of the operating fluid passing therethrough. The inlet-channel Z) leads to a valve-chamber (Z, and from the said chamber extends the outlet channel 6. Within the chamber d is situated the valve f, opposed to the inner end of the inlet-channel Z) and adapted to register with the valve-seat l1, surrounding the same, to cut off communication between the said channel and the valve-chamber. The valve f is fitted with a valve-stem g, triangular in cross-section, adapted to move longitu- At the inner end of the plug 2' is a valve-seat j, which is opposite the one, A, at the other end of the inletchannel 6. The outer end of the valve-stem g is fitted with a disk Z, having a collar m, which incloses the end of the valve-stem and is provided with grooves 0, registering with the outer end of the passage h.

Connected to the valve-casing a is the operating-motor p, which embodies an accumulating-chamber g, formed of a rigid plate having therein a small outlet-port s, and a flexible diaphragm r in contact with the disk Z. The small outlet-port s is controlled by the thermostatic valve t. Leading from the inletchannel 6 to the accumulating-chamber g is a duct u of diminutive dimensions to allow of the flow of an exceedingly small volume of the operating fluid from the inlet-channel to the accumulating-chamber, and the flow is regulated by means of a rotary valve capable of adjustment to further diminish, if necessary, the volume of the operating fluid passing through the d uct. The thermostatic valve 25 is adjustably connected, by means of a screw t, (shown only in Fig. 8 and which forms no part of my invention,) to the thermostatic blade w, which extends from the top of the casing a, and bearing against the thermostatic blade w is an adjusting-screw a, carrying a pointer to adjust the moving end of the thermostatic blade w with reference to the outlet port 5. To effect this adjustment, the casing for the regulating-valve is provided with a dial, which is not shown, as it forms no part of the present invention, having indicated thereon the various degrees of temperature say from any degree below Zero to any degree above it. 1n adjusting the thermostatic blade w the pointer is turned to any prede' termined degree on the dial, which carries the adjusting screw, to force the thermostatic blade toward or from the casing a. The thermostatic valve 25 is then adjusted, by means of its screw t, independently of the blade to close the outlet-port s, which effects the accumulation of the operating fluid in the accumulatingchamber g and the distention of the diaphragm r. This movement of the diaphragm actuates the valve f and causes it to close the inner end of the inlet-channel b, and so cut off the flow of the operating fluid through the valve-chamber (Z to the outlet-channel c, which has the ultimate eflect of allowing the radiator-valve (shown in Fig. 1) to open. When the temperature has risen above the normal the expansion of the thermostatic blade 00 is such that it moves outward from the operating-motor p and carries the thermostatic valve 6 from the outlet-port s, which allows the operating fluid in the accumulating-chamber g to escape. The diaphragm is now free to move outward, and the pressure of the operating fluid in the inletchannel serves to open the communication between the inlet and outlet channels through the valve-chamber d and hold it open while the temperature remains above the normal. With the inlet and outlet channels in communication, as described, the operating fluid causes the closing of the radiator steam-valve. (Shown in Fig.1.) When the temperature falls to or below the normal, the thermostatic blade contracts and moves the valve 6 to close the outlet-port s. This causes the accumulation of the operating fluid in the motor to again distend the diaphragm and actuate the valve f to cut ofi the flow of the operating fluid to the outlet-channel. When the valve f is in this position, the pressure of the operating fluid in the outlet-channel is relieved by the escape of the operating fluid through the passage 71, around the triangular valve-stem and through the channels in the valve-disk Z. When the operating fluid is passing from the inlet to the outlet-channel, the valve f bears on the Valveseat j and closes the passage h, thereby preventing the escape of the operating fluid. An escape of the operating fluid takes place only when the motor-valve is resting on the valveseat to relieve the pressure in the outletchannel.

I claim as my invention In a regulating-valve for the purpose described, a casing having therein a valve-chamher with an inlet and an outlet channel leading therefrom and a passage which is opposite to or in alinement with the inner termination of the inlet-channel, which passage places the chamber in communication with the outer air, a valve in the chamber adapted to be moved therein to close either the passage or the inlet-channel, and a stem with a practically triangular cross-section, which extends from the valve and passes through the passage and is provided with a disk at its end, combinedv with a motor which comprises an accumulatingchamber in communication with the said inlet-channel, having one rigid wall with an outlet-port therein and a flexible diaphragmwhich forms the other wall, the said diaphragm being in contact with the disk of the valve-stem, and a thermostatically-operated valve adapted to control the said outlet-port, substantially as specified.

Toronto, lVIay 17, A. 1). 1902.

NATHAN E. NASH.

In presence of F. B. JARMAN, C. H. RIoHEs.

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