USRE10768E - issfi - Google Patents

Description

2 Shets-Sheet 1. w.-s. JOHNSON.

'Asslgnor to the JOHNSON ELECTRIC SERVICE COMPANY. SYSTEM OF TEMPERATURE REGULATION.

Nd. 10,768. Reissued Sept. 28, 1886.

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.2 Sheets-Sheet 2. W. s. JOHNSON. Assignor to the Jom qson ELECTRIC SERvIcE COMPANY. SYSTEM OF TEMPERATURE REGULATION.

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Reissued Sept. 28, 1 886.

UNITED A STATES \VARREN S. JOHNSON, OF MILVAUKEE, \FISGONS1N,'ASSIGNOR TO THE JOHNSON ELECTRIC SERVICE COMPANY, OF SAME PLACE.

SYSTEM TEMPERATURE-FEGULATION.

SPECIFICATION forming part of Reissued Letters Patent No. 10,768, dated September 28, 1886.

Original No. tlZlL-IOG, dated December 1,15%. Application for reissue [lied September -i, lSSti. Serial No. 2il,'ifi1l.

1'0 all whom it may concern: K

Be it known that -I, WARREN S. *JOITNSON, formerly of \Vhitewatcr, in the county of \Valworth, and inthe State of \Visconsim'bui now -of Milwaukee, in the county of litilwaukec and said State of \Visoonsin, have invented certain new and useful Improvements in Systems of Temperature-Regulation; and I do hereby declare that the following is a full, clear, and exact description thereof.

-My invention relates tothatclass'qf devices which regulate temperatures by automatically controlling thesources of heat, such as steampipcs, hot-air tines, &c.;and it consists of a system of temperaturcnregulation, which will be more fully set forth hereinafter.

In the drawings, Figure 1 is a representation of a system of steam-heating with my system of automatic regulation combined there-v with. Fig. 2 is a vertical section of one of my main diaphragnrvalves. sectional view, and Fig. -:t 'is a side elevation, of my eleetricall y actuated auxiliary valve which controls the admission of the fluid used to the cxpansiblc'chambers of the diaphragmvalvcs.

My invention more directly relates to the 5 system of controlling the source of heat. by

means of a thermostat which makes and breaks an electric current, the said electric current in turn operating a small valve which is connected with some fluid under pressure, such as steam, water, air, &c. As the current operates the small val vc-the fluid under pressure enters an expansible chamber, by the move ment of whose walls the main valveis operated. Thedetails of this system of controlling sources of heat automatically are fully set foi'th in a patent granted to incJu-ne2-t,- 1884, and numbered 301,059.

The present application relates to the adaptation of the various elements of mydevicc to meet the requirements of certain forms of steam and hot-air heating.

A is a steam (or hot-air) generator, supposedto be placed in the basement of a building. The generator A has the supply-pipe a, with its divisions a a leading to the coils or radiators B BB. It also has the return pipee,

Fig. 3 is a detailwith its branches 0 o leading from the radi a'tors back' to'wthe generator A. ll laeh of the coils or radiators 1; ll is supplied with the supply-valve U and the return-valve U, and these valves are of the construction shown in detail in Fig. 2, and substantially the same as shown and described in my patent for thermopneumatic temperature regulator, granted March 17, 1885, and numbered 314,027. l'lach valve 0 and G has the valve-disk D, which serves to control the steam-passages o and r of the supply and return. pipes, respectively, and each valve is also supplied with an cxpansible chamber, E, having a movable wall or diaphragm, E. \Vhen the chamber E is expanded-by means of the admission of a fluid under pressure, it pushes the valve D to its seat by means of its stein d. The cxpansible chambers E of each of the valves 0 C G and of the valves 0' .O G are connected by the I is a thermostat situated in the a nirtment which thecoils or radiators B B l; are intended to heat. This thermostat is connected by the wires 1' 'i-iawith the electric battery .T and the electrically-actuated valve H. This valve H consists of a chamber, H, containing a pistonvalve, h-,which is lifted by the armature-lever h when the Jelectric circuit is made by the thermostat, and this nrinits' the fluid from the reservoir G to enter the valve-chamber 11', ,from the pipe F through the passage h", andto pass out of said chamber through the passage it into the pipe F on the other side of the valve H, and thusthrough the branches f into the cxpansiblc chambe'is E in the valves 0 U G, as hereinafter explained; -and the said valve; chamber H has airputlet, h, at the top, which is closed by the upper-end of the piston-valve It whcn thepassages' it 1-1 h are open, as shown in Fig. 3. The particular location of the reservoir G and battery J is immaterial, and the pipe F maybe bent in any way, as shown in Fig. 4, necessary to secure a convenient location for the auxiliary valve H. p

The thermostat I serves, by 'ehanges'of temperature, to make-andbrealt the electric cirjcuit which operates 'tlie-valvc-H, which in turn admits or releases the fluid under pressure to or from the eitpansible chambers E- l,

&c., in the main valves. I As the expansion vnumber of valves which govern the supply of heat toa room, and effectually exclude the source olheatl'rom each part of the system. To accomplish the latter eii'et-t I have heretofore used check-valves on the return-pipes c to the lack ofreliability of action of checkvalves, I have devised my present method of closing both the supply-valves U C O and the return valves O 0 CK automatically by fluid under pressure, thus effectually excluding the steam or other fluid which is the source of heat.

"In placing the supply-valve O and the return-valve C on the pipes, I place them so that when they are closed the 1n'essure.i.u. .thc

. supplyqupe a will tend to press against the under side of the valve disk D in the supplyvalve 0 and open it, while the pressure in the retu rn-pipe 0' will prcssagaiust the upper side of the disk I) in the return-vz'rlve O'and tend tokeep it closed. lhe reason of this arrange inent is as follows: Each radiator is necessarily supplied with an air-valve, K, for when said radiator is 'lor'a longer or shorter period shut off from the steamisystcm it will unavoidably be tilled with air. \Vhen the steam is again adniit-tethif there is no escape for the air,- the radiator will not be perfectly filled with steam. The air valve K is so made that the air can escape; but.- when steam or hot water endeavors to pass through, it automatically closes by the expansion due to the heat, ,asis well known in ordinary air-valves of this kind. Now, it the valves 0 and 0 both opened at the same time, the steam would enter equal] y at both cnd's,-and before the steam from the supply-pipe a had forced out the air from the ail-valve K the steam or water from the return-pipe 0 would reach it, and close it by means of the expansion due to heat, and thus the radiator B would still. retain a great part, of the air and not be suflieiently heated. On the other hand, it the valves 0 and O are arranged as in my device,-the valve 0 will open first and admit the steain, since the pressure on the valverdiskD of the valve 0 will hold it shut until the pressure is-etpializethwhen i will open by means of its spriu In large apartments it is either inconvenient or impossible'to so arrange the pipes which supplythe heat that a single valve will serve to shut otf the supply and a single valve the. return. Atfihc same time it is unnecessary or inconvenient to have more than one thermostat and electrically-actuated valve, which controls the fluid under pressure and loro'pcrating the main valves; and hence in my present system I connect all of the various supply and return valves of the pipes whichheat the room with one electrically-act-uatcd valve, eon-' trolling the supply of air or other fluid under pressure, and use a single thermostat, which automatically actuates said electric valve. By this system themaking and breaking of the electriccnrreut will operate the entire series of main valves, thereby controlling all of the various sources of heat simultaneously.

It will be understood that iii-describing the heat,.while I have most generally used the term steam my present iuven tion is-adapted equally as well for hot-air heating. n c of the coils or radiators B B B; but owing Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is- I -l In a system of temperature-rcgulation, the combination of one thermostat, which serves to control, through the means ofa fluid under pressure, the valves which govern the supply of heat to an apartment, with said valves and the fluid under pressure, one of which valves is a supply-valve which shuts ""agai-n'stthe pressure from the stcam-generator,

and the other a return-valve which shuts with said pressure, substantially asset forth.

2.. In a system of temperature-regulation,

the combination of one thermostat, which serves to control, by means of a fluid under pressure, the valves which govern the admission of heat to the apartment in which the thermostat is situated, with-an auxiliary valve and the fluid .underpr'essure, and two or more main valves con nected with the source ol'heat,where by all of the main valves are. operated at the same time by means of the one thermostat, substantially as set forth. H

' 3. In a system of temperature-regulation, the combination of a system of heatingpipes having valves operated by a fluid under press are, a system of'pipes containing and conveying said fluid under pressure, an electricallyactuated valve which serves to admit or release the fluid under pressure when it aetuates said valves in the heating system, and a suitable electric generator a-ndthermostat in circuit with said electric valve, whereby the thermostat, through the means of the electric valve and the system of pipes containing a fluid under pressure, operates a series of main valves in-the heatingsystem, substantially as set forth. 4, In a system of temperature-regalation,-, the combination of a heat-generator, A, and

system of heating-pipes leading therefrom, havo'hcreunto set any hand, at Milwaukee. in providedwith the supply-valves C and returnthe county of Milwaukee and. State of Wis- IO valves 0, with the coilsfloir radiators B B, i'escousin. in the presence of two witnesses. ervoir (l, containing hid under pressure,"

5 ipe F and connections, and thermostat I, c0n- ARREN JOHNS-ON nectell by wires 1' i i with battery J and valve \Vitnesses: H on the pipe F, substantially as set forth. H; G. UNDERWOOD,

In testimony that I claim the foregoing I ROBERT R. HOSKING.

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