US592924A - Automatic heat-regulating system - Google Patents

Description

(No Model.)

J. V. STOUT. AUTOMATIC HEAT REGULATING SYSTEM.

No. 592,924. Patented Nov. 2,1897.

WITNESSES INVENTOR,

UNITED STATES Fries.

PATENT JOHN v. STOUT, on EASTON, PENNSYLVANIA.

'AUTOMAT'IO HEAT-RiE GULATlNG SYSTEM.

SPECIFICATION forming part of Letters l atent N0. 592,924, dated November 2, 1897. Application filed une 6, 1895. Serial No. 551,919. (No model.)

To all whom itmayconcern:

Be it known that I, JOHN V. STOUT, a citizen of the United States, and a resident of Easton, county of Northampton, and State of Pennsylvania, have invented certain new and useful Improvements in Automatic Heat- Regulating Systems, of which the following is a specification. L l

The invention relates to heat-regulatin g apparatus in which passage of a heating fluid from a source of such fluid to a'radiator or other heating-device is controlled by a valve which is normally held in one of its positions that is, closed or openbut which is moved to its other position when an auxiliary valve is suitably controlled, preferably by magnets in thermostatic circuits.

The main object of the invention is to provide such a system with an improved auxiliary-valve apparatus having a single valve to be controlled, and that an inlet-valve. In this apparatus the operating-magnets, circuit connections, and mechanism are entirely exterior to the Valve-body, so that they are not exposed to the action of the fluid used, thus making it practicable to use steam or water as well as air for the controlling fluid without injuring said parts and yet to be able to make and break the circuits after each operation. No packing is used between the exterior operating mechanism and the valve within the valve-body. Hence movement of the valve,

and all the power necessary to move the valve is simply to overcome the pressure in the system. I

In the drawings, Figure lshows a central vertical section of the auxiliary valve appa-j ratus connected to the main-valve apparatus in a supply-pipe leading to heating apparatus and the circuit connections, and Fig. 2 shows a modification.

1 is a supply-pipe of a heating system leading to a radiator 2 or other heating device, there being a main valve 3 in said pipe, which is held closed by pressure on piston 4 in cylinder 5 when the inlet-valve in the auxiliary apparatus is open. The cylinder is connected by a pipe 6 with pipe 7, which is connected to a source of pressure--e. g., to the supplypipe 1 below valve 3, as indicated-by pipe 7 Between pipes 6 and 7 is the auxiliary valve 8,adapted to rest on the inlet-port 9. Through plug 10 is a passage through which extends loosely the valve-stem 11, having at its upper end a disk 12, against which presses upward the spring 13. Through the upper end of the valve-body is a passage 14 and in it a non-packed operating-stem 15, having at its lower end a disk 16 and at its other end a'disk 17, adapted to rest alternately against the ends of passage 14. These disks play no part in the operation of the main valve by the auxiliary valve, but serve to prevent undue leakage around the stem 15, for it will be seen that the space around the stem is tightly closed, except when the stem is actually moving; but when the stem moves up the small amount of fluid around the stem will be free to escape. This arrangement is an important feature of this improvement. It gives a freely-moving stem, while keeping the waste of fluid-pressure small. The fluid that does escape is kept from the magnets and circuit connections by diaphragm 18. The upper end of stem is secured, preferably, to a flexible diaphragm 18 by nuts 19. Since there will be a small leakage, a waste-pipe 20 is provided from the chamber below the diaphragm. A spring 21, stronger than spring 13, presses down on disk 16, forcing stem 15 against stem 11, holding valve 8 open (when the system-is in the condition shown) and the main -valve 3 closed. operating stem is not retarded by friction,

22 is aframe supporting controlling-magnets'M'M, lever 23 with armature 24, and angle-lever 25 with armature 26. The vertical arm of the angle-lever is adapted to stand above the end of lever 23 to hold it down, be-

' ing pushed forward by spring 42 and adapted also to move off from the lever 23 when armature 26 is attracted. Lever 23 is connected by a chain 27 or otherwise to stem 15.

ture falls to move into contact with spring 32, which is connected by wire 3-1 to magnet M. Blade 31 is connected to a source of electricity B, thence by wire 37 to contacts 41 36, carried by but insulated from levers 25 and 23 byinsulation a. Contact 4C1, when lever 25 is in engagement with lever 23, does not touch contact 10, which is connected to magnet M by wire 39, and thence by wire 38 to contact 33 of the thermostat; but spring 36 does rest on contact 35, which is connected to magnet M, and thence to contact 32. As the temperature falls blade 31 will move against contact 32, magnet M will attract its armature, bringing parts 41 40 together and releasing lever 23, which will rise, allowing the valve 8 to close and separating parts 35 36, opening the circuit of magnet M, and leaving the circuit of magnet M in condition to operate when closed by blade 31 moving against contact 33 on a rise in temperature resulting from the opening of valve 3. lVhen valve 8 is closed, the valve 3 will open gradually, as above set forth.

In Fig. 2 the mechanism carried by frame 22 is broken away, since it may be the same as in Fig. 1.

In Fig. 2 the parts 8', 9', 10, 13, 11, 12.,141, 15, 16, 17, 18, 20, 21, 22, 23, 21, 27, 28, and M correspond to the similar parts of Fig. 1, but in the construction of Fig. 2 spring 21 presses up on stem 15 instead of pressing down, as does spring 21 of Fig. 1. \Vhen lever 23 is released, spring 21 closes disk 16 and spring 13 closes valve 8.

The stems are so adjusted that when in the position shown there is a slight clearance between them, but when stem 15 is moved down it strikes and moves the stem of valve 8. A weight IV or a spring of sufficient strength to overcome springs 13 and 21 and pressure at S will open valve 8 when lever 23 is pulled downward by magnet M, compressing spring 28, as will be evident.

As stem 15 has but little pressure to overcome, it is made small and fits closely in the bore through which it passes, but so that it can travel freely without causing friction and at the same time will reduce the leak around stem 15 to a minimum.

Having described my improvement, What I claim is 1. In combination with a heating plant or system, a main valve for controlling the delivery of the heating agent; a motor for actuating said valve; a source of fiuid-pressu re; a pipe connecting the motor and the source of fluid-pressure; an auxiliary valve interposed between the motor and its source of supply for controlling delivery to said motor; an electric motor for actuating the auxiliary valve; and an actuating-stem for said valve, connected with the electric motor, passing through a tube or plug of the valve-containing shell, and provided with disks adapted to bear alternately upon opposite ends of the plug or tube and to seal the same when the actuating-stem reaches its highest or its lowest position.

2. In combination with a heating plant, a main valve for controlling delivery of the heating agent; a motor for actuating said valve; a source of fluid-pressure; a pipe connecting the motor with the source of fluidpressure; an auxiliary valve for controlling the pressure on the motor; an electric motor for actuating the auxiliary valve; and two valves operatively coilnected with the auxiliary valve and with the electric motor, and serving to seal the shell or easin g containing the auxiliary valve substantially as described and shown.

3. In a heat-regulating apparatus the combination of a main valve for controlling the delivery of the heating agent; a fluid-pressure motor for actuating said valve; an anxiliary valve for controlling the delivery of fluid to said motor; an electric motor for actuating the auxiliary valve; and a device for preventing escape or waste of the actuating fluid, comprising two valves located between the auxiliary valve and the electric motorand in operative connection or relation with both; whereby one or the other valve is caused to seal the containing-shell of the auxiliary valve as said valve is moved to either of its extreme positions.

4. The combination of a valve-body, an inletvalve therein, a valve-stem, an unpacked operating and guiding stem extending through the valve-body and in position to move the valve, and two disks or devices on the unpacked stem, one in position to close the space around the unpacked stem when it is moved in one direction, and the other in position to close said space when the stem is moved in the opposite direction for preventing waste of fluid and allowing the stem to move easily.

Signed this 3d day of June, 1895.

JOHN V. S"OU'l.

\Vitnesses: I

J. M00. SNYDER, ED. 0. SMITH.

ICC

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