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Publication numberUS374072 A
Publication typeGrant
Publication dateNov 29, 1887
Filing dateJul 16, 1886
Publication numberUS 374072 A, US 374072A, US-A-374072, US374072 A, US374072A
InventorsWabben S. Johnson
Original AssigneeThe johnson Eleoteic Seevice Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 374072 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

L b e e h s F t e e h s 2 N 0 S N H 0 S (No Modeli) ELECTRIC TEMPERATURE REGULATOR. No. 374,072.

Patented Nov. 29, 1887,.

Tm Y a Jfizzzaya N. PETERS. Pfimum n m, Washington. a; c.

(NQ Model.) 2 2.



No. 374,072. Patented Nov. 29; 18 87.


N. PETERS, vwcwuxmgm nw. wmin mn, o. c



SPECIFICATION forming part of Letters Patent No. 374,072, dated November 29, 1887.

(No model.)

To aZZ whom it may concern.-

Be it known that I, WARREN S. J OHNSON, of Milwaukee, in the county of Milwaukee, and in the State of WVisconsin, have invented certain new and useful Improvements in Temperature-Regulators; and I do hereby declare that the following is a full, clear, and exact description thereof.

' My invention relates to temperature-regulators, and will be fully set forth hereinafter.

In the drawings, Figure l is a general view of one form of the apparatus employed in carrying my invention into efi'ect. Fig. 2 is a de tail sectional view of the register and its attachments. Fig. 3 is an elevation, partly in section, of the combined thermostat and electro-pneumatie valve; and Fig. 4 is a vertical section showing another form of my invention applied to a register set inthe wall of an apartment.

My present invention is an improvement in heat-regulating apparatus in which electricity governs some fluid under pressure, and the fluid under pressure operates the valves which govern the supply of heat, the electricity itself being controlled by a thermostat or thermostats, which, through slight variations of temperature, make and break the electric circuits.

In my previous patents I have shown various devices and combinations for accomplishing this purpose; but this present invention refers particularly to a novel form of the electro-pneumatic valve and thermostat and to a special device for operating the form of valve commonly called registers, and which are usually placed in the floor or wall of the apartment to be heated.

A represents the apartment to be heated, and B is an ordinary fan-register or multipliedleafed valve in the floor thereof.

0 is the source of heat, which may be a hotair furnace, as shown, or a steam-furnace.

D is the source of electricity, as a battery.

E is the thermostat, and F is the electropneumatic valve connected thereto.

. G G is the apparatus for furnishing the fluid under pressure-such as the air-pum p and reservoir for compressed air shown in the drawings.

The thermostat E is a well known form which is operated by the differential expansion of two substances. The thermostatic bar is rigidly fastened at one extremity and free to move at the other, and forms one terminal of the battery D, (to which it is connected by wire d,) and at its free end has contact-points. Below this is a block, E, provided with con tactslides e and 6, arranged so that one or the other will be always at one side of the free end of the thermostatie'bar and inposition to form a contact therewith by the movements of the latter occasioned by variations of the temperature, and thus the slides e and e will alternately form the other terminal of the said battery D.

WVhen the temperature in the room rises beyond the point desired, the thermostatic bar makes contact with the right-hand slide, 6, which allows the current to pass through the right-hand magnet,H, by means of the spring contact-stripf and wire and the wires h and d to battery I) the block E and levers t i, which connect the slides e 6 with the armature I, being of non-conducting or insulating substance; and when therighthand magnet is thus excited it pulls down the right-hand end of the armature I. This armature has a hub, I,'working in the upper part or head, J,of the coupling of the valve F, which coupling has two opposite right-angled passages, a and b", the former, a,connecting by pipe at to the res-. ervoir G of fluid under pressure, and the latter, 7), connecting by pipe I) to the expansible chamber B of the device which serves to operate the register B.

The hub I of the armature has a passage or cut-awayportion, j, therein, which is adapted to register, according,to the position of the armature, with one or more of the passages a and b of the valve-casings and passage j of the head J. Thus the hub of the armature I forms the plug of the cooker valve F, and the just described movement of the armature turns the cock and allows the fluid under pressure from the reservoir G to flow through the pipe at, passages aj b, and pipe b, in the direction opposite to that of the arrows in Fig. 3, to the just-named expansible chamber B in the register-operating device and close the register B, as shown in Fig. 2. The mechanism which permits this tobe done is as follows: K is one wall of the chamber K, which receives the ICO register and communicates by pipe 0 with the furnace G, and this wall supports the housing 13 of the expansible chamber B, which housing projects therefrom on one side, while from the other side, within the chamber K, there projects a lug, k, to which is attached one end of a spring, L, the other end of which is fast eued to a lever, M, one end of which lever M is pivoted at m to a lug or projection, b, on the housing B, while the other end is pivoted at m to a vertical link, M, which in turn is pivoted to the bar N, which is connected to and operates the fans or slats n n a of the register. The tendency of the spring L is to draw up the lever M to ahorizontal position,thereby raising the link M and bar N and opening the fans a out, so as to admit the heated air from the furnace O and pipe 0 into the apartment A, as shown in Fig. 1. The expansible chamber 13, through its flexible wall, presses upon a bearing plate, M, which is furnished with a depending shank pivoted at m to the lever M, and hence when the chamber 13 is expanded by sufficient fluid-pressure the lever M and its attachments will be forced downward and the fans in the register closed, (notwithstanding the tendency of the spring,) as shown in Fig. 2.

The register is provided with a dog, 0, of ordinary construction, to close it by hand (or foot) when the temperature of the room is not sufficiently high to do so, and also with a pivoted catch, P, which may be turned under the segment of the dog 0, as shown in Fig. 1, so as to lock the fans in a closed position when it is not desired to warm the room; and this is an important feature, as otherwise it would be necessary to detach the spring L to prevent the slats opening. At the same time that the armature I moves down before the right-hand magnet, H, it draws with it the lever iand slidec, breaking the circuit which produced this movement,and as the right-hand end of the said armature moves down the left-hand end rises,'thereby raising the left-hand lever, 2", and left-hand slide, a, so that when the temperature again falls in the apartment A the thermostatic bar will move to the left and make contact with said slide 0, and thus energize the left-hand magnet, 11, (completing the circuit through slide 6, spring contactstripf, wire 9, magnet H, wire h, and wire (2 to battery D;) and as the circuit around the right hand magnet, H, has previously been broken, the left-hand magnet, H, is now free to pull down the left-hand end of the armature I and simultaneously reverse the valve plug 1, (which forms thehub ofthcarmature,as stated,) leaving the parts in the positions shown in Figs. 1 and The air or other fluid under pressure will now be cut off from its passage from the tank or reservoir G through the valve F, and that containedin the expansible chamber B is free to escapeinto the open air through v the pipe I) and passages b, j, and j, as indicated by the arrows in Fig. 3, and then (if the register is not locked by the catch P) the spring L will open the register-fans n n a and permit the heat to enter the apartment A.

I preferably make the wall K of the registercasing independent of the floor or wall opening and rigidly connected to the frame-work of the register and to the housing 13 and it is desirable that the portion of the pipe 1) next the housing 13* should be flexible, (as of rubber,) so that the register may be lifted from its normal position for cleaning without breaking its connections with the source of pressure or the actuating mechanism. The same result may be accomplished with the form of devices shown in Fig. at, where I have shown a register set in the face of a wall and operated by fluid-pressure.

In this form of my invention the housing B of the expansible chamber is not attached to the register B, but is wholly independent thereof, and in place of the vertical link M (shown in Figs. 1 and 2) I show a chain, the lower end of which is attached to the dog 0 of the register, and the spring L is attached to other parts of the register and the wall K dispensed with; but the functions, mode of operation,and advantages are the same in both instances. Of course in the form shown in Fig. 4it is immaterial whether the pipe 11 is partly flexible or wholly rigid, and the various elements of my invention may be further modified within the limit of the claims without departing from the spirit of the invention.

I do not limit myself to any especial kind of hot-air or steam furnace, nor to any particular fluid under pressure, nor any particular means for compressing said fluid.

As used in this specification the term register is to be understood as meaning a particular form of valve having two or more leaves, fans, or slats, which by a single concerted movement open or close an aperture.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a temperature regulator, a valve IIO formed of two or more fans mechanicallyjoined I nation, with a valve formed by the union of a series of slats which move simultaneously to open and close an aperture and a lever or bar and link connected to one or more of said slats and operated by fluid-pressure, of an electro-pneumatic valve, thermostat, battery, and suitable opposing electric circuits and a source of fluid-pressure, a fluid under pressure, and suitable conduits, whereby the electro-pneumatic valve is operated by the varia- .thermostat and the movements of said valve controlled thereby, substantially as set forth.

3. In a temperature-regulator, the combi-' nation, with a valve composed of a series of fans which together serve bya concerted movement to open or close an aperture, of an expansible chamber, an operating lever or bar and link connected to one or more of said fans, a fluid under pressure,and suitable intermediate mechanism and conduits, whereby the action of the fluid under pressure upon the expansible chamber will operate the series of fans composing said valve, substantially as set forth.

4:. In a temperature-regulator, the combination, with a valve composed of a series of fans mechanically joined to move simultaneously, of a lever pivoted to a link operating said fans, awall rigidly connected to the framework of said valve, a housing rigidly connected to said wall and containing an expansible chamber, said lever being pivoted to the link at one end and to a projection on the said housing at the other end, a spring extending from said lever to a lug on the said wall, anda bearingplate pivoted to said lever and pressing against the movable wall of the said expansible chamber, substantially as set forth.

5. In a temperature-regulator, the combination, with a valve formed of a series of fans mechanically joined to move simultaneously,

- said fans being supportedby a common framework, of a lever or bar and a link connected to one or more of said fans, and mechanism operated by fluid-pressure for actuating said lever or bar and said link and thereby opening and closing the fans of said valve, said mechanism and the fulcrum of said lever being permanently attached to the frame-work of said valve, substantially as set forth.

6. In a temperature-regulator, the combination of a fan-register adapted to be operated by fluid-pressure with a locking device for holding the fans of said register in the position to which they have been adj usted, substantially as set forth.

7. In a temperature-regulator, the combination, with a valve formed of fans, which by a simultaneous movement open or close an aperture, said valve being operated by fluidpressure, of a suitable source of fluid-pressure and a suitable conduit for said fluid, having flexible connection with said multipleleafed valve, whereby the latter may be lifted from its normal position for thepurpose of cleaning without breaking its connection with the source of pressure, substantially as set forth.

8. In a temperature-regulator, the combination, with a valve composed of a series of slats mechanically joined to move simultaneously from a single impulse, said impulse being furnished by fluid-pressure, of flexible connections to the source of power, whereby displacements of the register within certain limits will not disturb its functional relations to said source of power, substantially as set forth.

9. In a temperature-regulator, the combination, with a thermostat, of circuit-breaking devices permanently attached to said thermostat, said circuit-breaking devices being for opposing circuits, electromagnetic mechanism operated by the thermostatic bar, and a three-Way valve operated by said mechanism, whereby when one circuit is closed by the thermostatic bar the valve is turned in one direction by the electromagnetic actuating mechanism, the circuit is broken at the thermostat by a movement of the circuit-breaker transversely to the normal motion of the thermostatic bar, and the opposing circuit-breaking device placed in position to close the circuit by contact with the thermostatic bar when said bar shall have moved in the opposite direction, and when the other circuit is thus closed the valve will be turned in the opposite direction and the position of the said circuit-breakers reversed, substantially as set forth.

, 10. In a temperature-regulator, the combination, with a thermostat, of circuit-breaking devices attached thereto for opposing circuits, electro-niag-netic mechanism operated by the thermostat, an electro-pneumatic valve operated by said mechanism, a fluid under pressure, suitable conduits for the same connecting with passages in said valve, an expansible chamber communicating with said conduits, and a valve composed of a series of slats mechanically joined to move simultaneously, and a lever or bar and a link connected to one or. more of said slats, all combined and adapted to operate substantially as set forth.

11. In a temperature-regulator, the combination of a thermostatic arm moved by changes of temperature, a valve operated thereby, and electrically actuated circuit-contacts in the thermostat itself, said contacts moving at right angles to the movement of the thermostatic arm, all arranged to operate in the following order: first, the thermostat, making contact with one contact-piece; second, the electric current operating the valve in one direction, and, third, the electric mechanism breaking the circuit by removing the contact-piece from the thermostatic arm by a motion at right angles to the normal movement of said arm and placing an opposing contact-piece in position to close the other circuit when the thermostat moves in the opposite direction, substantially as set forth. 4

12. In a temperature-regulator, the combination of a thermostatic bar provided with contact-points at its free end, a battery, and opposing electric circuits, a block located below the said thermostatic bar and having slides-adapted to alternately come in contact therewith, a valve, an armature operating said valve, and opposing magnets in circuit with said slides, substantially as set forth.

13. In a temperature-regulator, the combination of a thermostatic bar having contactto be alternately energized as the said slides points at its free end, a battery and opposing make and break contact with the thermostat,

electric circuits, a block below the said thersubstantially as set forth.

mostatic bar provided with slides adapted to In testimony that I claim the foregoing I 15 5 alternately come in contact with said bar, a have hereunto set my hand, at Milwaukee, in

valve below said block, a valve-plug forming the county of Milwaukee and State of Wisconthe hub of an armature, the said armature havsin, in the presence of two witnesses.

ing levers connected to the said slides, and VARREN S. JOHNSON. spring contact-strips and opposing magnets Witnesses:

to in said circuits, the said strips bearing against H. G.-UNDERWOOD,

the said slides and the said magnets adapted MAURICE F. FREAR.

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Cooperative ClassificationG05D23/27518