US1136084A - Heat-regulator. - Google Patents

Description

L. A. ABBOTT. HEAT REGULATOR. hAPPucATmw FILED MAR. 31, 190B.

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ATTORNEY L. A. ABBOTL;

HEAT REGULATOR. APPLICATION FILED MAR. 31, 1908.

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WITNESSES:

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4 specification of Letters Patent.

Application filed March 31, 190$.

To all whom it may concern:

Be it known that I, LAWRENCE A. Anno'rr, a citizen of the United States, residing" in the city of Chicago, in the county of (look and State of Illinois, have invented a certain new and useful Heat-Regulator, of which the following is a specification.

My invention relates to that class of devices which is desired to control the admission of a heating fluid to a radiator by the temperature of the room in which the radiator is located, and is more particularly designed for use in those buildings in which the so-called vacuum system of heating is employed, it being so designed that it may be attached to the vacuum side of the radiator,

and has for its object to provide certain improvements in construction and operation of the same as will be hereinafter more definitely pointed out and claimed, reference being had to the accompanying drawings in which- Figure 1, is a view of a room or apartment having my improved invention installed therein.

Fig. 2, is a detailed view of my improved fluid pressure valve. Figs. 3, 4t, 5, and 6, are detail views of my improved t rmostat, and the method of attaching it the wall.

reference numerals refer to similar parts throughout the entire description.

In the drawings: 1 is the radiator which is provided, at one end, with suitable pipe conhections 2 leading to a source of supply 35.

(not shown) of the heating medium, 4; is the vacuum valve which is suitably connect ed to a radiator; 5 is my improved fluid pressure motor which is formed, as better shown in the detailed view, with motor chamber 6, at the top, in which is located the motor diaphragm 7. This diaphragm has secured to its upper surface a block 8, of wood or other suitable materiai, and a flanged casting 9 is fitted to the lower side of the wood in the center thereof, the flange of the casting 9 engaging; the scent face of the diaphragm and it is held in position by means of screws 10, or any other convenient term of fastening. An internally threaded opening 11 is provided in the central portion of the flanged casting 9 and has secured thereto a valve in t2 the end of which is provided. With'throads f.

ting'to and coincidins with the threads in the flanged casting. lock nut i3, any other convenient to for ice nag the valve Patented Apr, 2%, l td.

5erial No. 4%,352.

stein in position, may be used. The lower end of the stem carries a valve 14 adapted to engage the valve seat 15. It is well known that these valves give considerable trouble by reason of wear, and it is a considerable source of annoyance to engineers that they have to disconnect the entire pipe connections in order to remove the valve for the purpose of putting in a new valve, or of grinding the old one into its seat. My valve casing 17 is coi'lstructed with an opening 16 in the bottom thereof of slightly larger diameter than the valve, the opening being provided with a plug 18, which may be provided with a shoulder to which a wrench may be attached or may be slotted for a screw driver. It is obvious from the above description that all that it is necessary to do in making a repair of this valve is to remove the plug 18, loosen the lock nut 13, and by unscrewing the valve stem, it can be taken out through the bottom of the valve casing without breaking a single joint. A coil spring 19 is located in the upper part of the chamber 6 and exerts a. pressure against the upper side of the block 8. The upper part of the motor chamber 6 is connected by means of suitable pipe connections 20 to the interior-of my improved thermostat 91, which is constructed, as better shown in the detail views, of a base 22, which is provided with lugs 23 and 24, a passage 31 being provided in the lug 23 which leads to the interior of the thermostat 21. Suitable pipe vconnections 32 lead from the opening 29 to the vacuum side of the radiator.

It may he found desirable in practice to iocate a check valve 33 between the connection with the vacuum pipe 34 and the ther inostat A. passage 35 leads through the lug to a chamber 3% formed in the base 22 oi? the thermostat 21. This chamber 36 is provided with internal threads and has mounted in its inner end a plug 37 which is;

slotted as at,38 to provide for screwdriver adjustment. An opening 39 is provided through the screw-threaded plug 37 afi'ording a passage the interior of the thermostat. A pipe plug 4:0 is titted to the opposite end of the chamber 36 and efi'ec ally seals it from the atmosphere. At the is time it is obs lb by the removal the plug 4-0 it is poss ble to regulate the position of the I? with a eat degree of nicety. A

-11, someanat similarto the chamis provided with a plug 42, similar to the plug 3'2", itbeing provided with an opening d3 through its center. A pipe plug si l, having a minute orifice 5 through. its center, is provided at the outer extremity of the chamber ell, the orifice leading to the exterior of the thermostat 21. Cotton, or other suitable material, may be located in the chamber ll, to cleanse the air as it enters from the atmosphere to the interior of the thermostat. The thermostat is provided with a metal band 46, which is secured to a valve 52, which is mounted upon a pin or pivot 53 and swings thereon. Coil springs 5% may be provided to take up the extra pull, it necessary. The lower end 55, of the valve 52, operates to open and close the openings 39 and 4:3. A cap 56 is threaded upon the base 22, packing 5? being provided therebetvveen, in order to make a tight joint. The base 22 is securely attached to the casting 27, by means of screws 58, packings 59 and 60 being provided Where the lugs 23 and 24 en ter the recesses 25 and 26. This makes it ex tremely convenient to remove the thermostat and make any necessary adjustments.

The operation of the device is as follows:The iiuid pressure motor 5 is normally in the position shown in the drawings. "When the wmperature has raised to a predetermined point the metal band 46 expands, carrying with it the arm 50, which, in turn, moves the valve 52 away from the opening 39, and will cause it to close the opening e3. Since the opening 39 is connected by the pipe connections 32 to the vacuum side of the radiator, it naturally :i'c ilows that the air contained in the interior of the thermostat is almost instantly exhalusted, and the vacuum operates to diaw ne rly, if not all, of the air out of the pipe 20gand the upper part of the motor chamber 6. This removes the atmospheric pressure from. the top of the motor diaphragm 7, and it follows that it is forced upward by reason of the pressure of the atmosphere upon its other side, with the result that the valve 14 is raised and is socurely, seated upon its seat 15. As soon as the temperature fails it is obvious that the metal band will contract 'and, actihg through the medium of the arm and the valve 52, will move the of the valve 52 away from the opening 43 and cause it to close the opening 39. This admits the air through the orifice a5, and the acuum being re lieved, the pressure upon each side of the diaphragm 7 is equal, with the result that the coil spring 19 exerts a pressure suilicient to move the valve stem downwardly, and in turn the valve Ll away from its seat 15, thus permitting the inflow of the heating medium to the radiator. The movement of the valve 52 under the thermostatic action of band 46 in uncovering opening 39 and closing op'ening 4.3, shuts oilingress of air to the interior ofthe thermostat through openings 43 and 45, thereby sealing pipe 32 from the atmosphere, so that the constant vacuum in the return pipe 3 will maintain its suction on the radiator 1. while the valve It is being operatedby said vacuum to seat at 15. It follows, therefore, that by reason of this closing of opening 43 as the opening 39 is uncovered, the action of the vacuum in pipe 34 on the radiator l is uninterrupted.

It will be obvious from the above description that my improvement may be attached "to any and all heating systems employing the vacuum system, and it becomes possible with a very slight change to provide for a regulation of the inflow of the heating medium by the temperature of the room without having recourse to electricity, with its attending sources of annoyance, or without the use of compressed air with its expensive pipings, etc., including the maintenance of an air compressor.

Many changes may suggest themselves to persons skilled in the art which will fall within the scope of my invention, as claimed.

Having described my invention, what I regard as new and desire to secure by Lcttors Patent, is

In a heat regulator for vacuum systems, the combination with a radiator, of a supply pipe on one side thereof, a single vacuum re turn pipe on the opposite side in constant communication with said radiator: and through which the air and water of condensation pass, a valve in said supply pipe, a fluid pressure motor for controlling said valve operated through the vacuum, and thermostatically operated means for controlling the communication of the vacuum pipe with said motor, said means operating, as it opens said motor to the action of the vacuum pipe, to seal said pipe from the atmosphere without interrupting the communication of said vacuum pipe with the radiator.

LAWRENCE A. ABBOTT.

Witnesses V. B. Romans, E. H. Lror-irmvcunc.

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