USRE10802E - johnson - Google Patents

Description

W. S.- JOHNSON.

Assignor to the Jounson ELECTRIC SERVICE COMPANY.

ELECTRIC VALVE.

Reissued Jan. -25, 1887.

kaxkunk -n1al es and breaks the electrimcircuit. Let-' walve'which serves to; control a a fluid under} 1 f UNIT D] STATES YPATENT -OFFICE.

WARREN sL- oHN'soN, 0F M LWAUKEE, WISCONSIN, Asslenon-ro' THE- JOHNSON ELECTRIC snnvrcn COlllPrkNY oh sAMn PLACE,

ELECJ'RIQ'VALVEQ fsPEcrncA'rmN, forming part of Reissued Letters Patent No. 10.802, datad'Januaryvzfi, 1887,

. Original No. 342,018, dated May 18, 1886. Application for reissue filed October 6, 1886. Serial No. 215,502.

'To aZZ whom it may concern: I

Be it known thatgl, WARREN S. Jousson, of Mil waukee,in the county of M ilwaukee,and .in the State of Wisconsin, have invented cerg '5 rain new and useful lmprovementsin Electric Valves; and I do hereby declare that the fol-,

flowing is a full, clear, 'andexact description thereof. i

. My invention relates to an improvement in apparatus designed to control valves-such as steam valves or dampers'on furnaces, windows, transoms,ventilators, &-c.-by means of a current of electricity; When temperatures "are governed by such apparatus it is usually done automatically by a thermostat,.which fi ters Patent for such improvements in. such apparatus have already been granted to me, such, patents being. numbered 297,937 and 1 301,059.- I V I v Y "My present invention consists or certainimprovem'ents in: the previously-patented apparatus, which, will be fully described hereinv after, andpointed out in the claims, the said improvements including the substitution for cuit batt'eryi.-e., one .in which the curr,ent is usedonly momentarily, instead of for irnizing in-the greatest degree thefelectr'ie n erg'y. lam-thus enabled to use abattery' which-requires less attentionandone tha t, is

- less liable b c me rtan e w nwftwi h: 4,6 font care for long periodsioiitime, l rt eq r wings, ig is [com fne'd "plan andgsection alview of my invention. Fig;

- 18;}, section ,onlinewx, Fig. 1.

r'essure acting toj operaterthe,main a1? 7 the closed-circuit battery shown in my pre ,vious patents of wh'atis called an 1 open-eir- +considerable. periods of time, as in the ordi.-

I p valve-casing is removed to iby the mechanism of the valve, 'thuseconorangement embody s ri ef rri g t e-d awii g n istheuijaih va ve; :Bythe electrically-actuated secondary I venient generator of electricity, preferably open-circuit battery like theLeclanch,(indi-' cated in the drawings atD.) I A pipe, E,.lea ds from some convenient reservoir of compressed air or other fluid under pressure, ,as water, steam, &c. The fluid under pressure is con trolled by the valve B in such a manner that it in turn will operate the valve .A, as will be shown.

In Fig. 1 the main valve A is'composed of the valve-chamber a, the v'alverdislc 1), whose steurcpasses through the stuffing-box (Z, the support e,with the fulcrum f, the lever g, and cuph, which rests upon theflexible diaphragm i, of rubber or other suitable material, andthe 6 5 rigid cup-shaped backing j, which, with the diaphragmaforms an air-tight ehambe r,"k This chamber 75 has a bottom orifice through which. any fluid under pressure may enterjthe chamberk, It is evident that if any fluid .un-- derpressure, as air or steam, be admitted-to the chamber k, it will force the cup 'hupward,

carrying thedohg arm of theflevergwith'jt, thereby forcing. the short arm downward and closing valve-disk b to its seat, i 'flhe, pipem leads to the secondaryvalve B, whiclnse'rves to -control the admission and releaseofjthe fluidunder pressure to andfromf.the charnber k; ,It is evidentlthat any other form of chain'- her would 19???well forlinstancc;acylinder "so WQ I M -PD'P' dbw'mb not er inc th r el e ne uel tli ne s ia to y rangemnt f parts" wi b a 10,802. valves; and it is to be understood that it is it maybe in contact with. vAnother importto a valveof this character and to a valve ant'feature of this spring is its movementpver which is moved by magnetic attraction-that a sensitive center-that is, in the movement my invention is limited. fromone sideto the other it hasa tendency to 70 I do not claim, herein an electrieally-conhold-either of the'ports closed and .not toretrolled valve the movement of' which is efmain midway. The tension of the spring fected by an engine or other power-driven while at rest is always in favor of the last motor. magnet excited, and does not tend to bring 2 2 are electro-magnets whose poles 2 2', any of the operative parts into equilibrium. 7 5

10 project through the valve-casing and appear It is evident that an inverted pendulum or upon the inside, so as tobring the field of magsimilar device would serve the same purpose.

netic force within the valve-casing, which In connection with the casing 1 of the secavoids the unnecessary friction which mightondary valve B are the binding-posts 16 16, a Y occur if any of the working parts passed' prolongation of each post passing through the 80 I 5 throughjair-tight joints. I he upper pole only valve-casing so as to project. into its interior.

' of each magnet is shown in the drawings,.tl1e These posts are insulated from the valve-'cas other pole and coil of each magnet being hiding by means of the hardrubber bushings den by the one shown. shown at 17 17. y I Pivotedat3 (the center of the valve-casing) is Attached tothe armature 4A, at either end, 8 5 i the armature4,which iscommon to the magnets are the strips 18 18', which in their journey 2 2, but so placed that whileit is facing one of "ings alternately break the electrical contact these magnetsit is notin the direct field of the with the posts 16 16, and thus prevent. the other magnet: By this arrangement, whenever spark at the thermostatC. Such spark would I either of the electro-magnetsis excited it will soon spoil the delicate points and make the 90 draw the armature into its own field and out apparatus inoperative. f p

of the direct field of the opposing magnet, the I do not deem it essential to minutely decircuit of the other magnet being open atsome. scribe the thermostat C, which is of a wellexternalpoint. By alternating the excitation known form, and whose operation depends on of the magnets the armature 4 4 may be made the difl'erential expansion of two substances. '95

to oscillate and perform the desired functions. In the thermostat shown 19 is the fixed endof Within the same valve-casing is the disk 5, the difl'erential bar, and 22 the free endof said pivoted at 6, and having the proiecting arms, bar, having contact-plates. 23 isan adjust-' 7 7, which arms are facedwith leather or other ing-screw to set the thermostat at different suitable substance, as shown at 8 8, for covertemperatures. 20 20' are opposing contact, loo

3 5 ing openings, as next described. Through the posts,' which serve-with the difierential bar to valve-casing there project the hollow cones 10 close separate electric circuits. From these, and 11, whose internal extremities form seats points, respectively, there pass the wires 24 for the leathers 8 8 when they are brought be- 24 to the magnets 2 2, and from the thermofore them by the movement of the disk 5. The static bar there passes the wire 25 to the bat- I05 conelO is the extremity of the pipe E, leading tery and then to the casing of valve B, which from the reservoir of compressed air or other is metallic, although non-magnetic, as stated.

suitable fluid, and the cone 11 simply com- As shown in the drawings, the valve A is mnnicateswith the open air through the valve open, sincethe valve-disk b is raised from its. casing 1, which is non-magnetic or of nonseat. The chamber his not expanded, since I 4 5 magnetic material, such as brass. The motion. there isa free egressfor its contents through of the armature at 4 is communicated to the the opening 1 to the open orifice 11 in B. The disk 5 through the rigid lever 12, which is pivarm 7 of the disk 5 in valve B closes-the onioted to pin 13 in the disk. As the armature fice 10 and prevents the escape of the 'fiu'id T stands in the drawings the orifice of the cone from the'reservoir into the interiorof the 5o 10 isclosed by the arm 7 of the disk 5. When 'valve B. If, now, the thermostatic strip in O the armature oscillates so as to face the oppo'smoves to the left and touches the point 20, a ing magnet, the disk 5 will be rotated sufficircuit will be formed through 25, 4, 18,16, ciently to close the orifice of the cone 11 by 2,and 24, the armature 4 4; will be attracted means of the arm 7". i a to the magnet in circuit, and the spring 14. For the purpose ,of holding the arms 7 7 will be thrown to the opposite side of the close against the cones 10 11, so as to make .centerG of the disk 5'. At the same time the them air-tight, also to hold the armature in port 10 willbe'opened and the port 11 closed; its proper position while at rest, andto insure also, the contact-strip 18 on the left of the ar-' the breaking of the circuit by the circuitmature4 will haveleftthe-pointof post 16, thus breaker, the disk 5is furnished with a spring, breaking the electric current, The breaking 14:, fastened to the pin 13 at one extremity, of the current at this point is avery important and to the valve-casing or other support at 15. feature of my device, for the extra current This spring, being at its fixed end-fastened ecproduced bythe breaking does not burn the centrically to the center of the disk 5, tends to delicate points of the thermostat. As the hold one of the arms, 7 or 7, of the disk firmly breaking is produced by the direct movement against one of the cones 10 and 11, whichever of the armature, it is always certain, and as the contactsare slidin'glthey wear themselves bright. The strip '18 on the right of the armature'will have come into contact with they point of post 16, so that the opposing magnet shall be in circuit'whenever the button 22 shall touch post 20Tin Asa resnltof this move-' mentjust traced, theinterior of valve B and the expansible chamber In in A will be filled with the fluid under pressure. The expanding of chamber k'will close the valve A, and it will remain elosed until by a changeof temperature the thermostat is thrown in circuit with the opposing magnet, when the disk 5, with arms 7 7, will be partly'revolved, so as to close port 10 and open 11, and the armature willtagain stand as shown .in the drawings. The fluid under pressure is now free to escape and the valve A to open. v

When this invention is attached to a heat ing apparatus, the movements of the thermostatic bar dueto the variations'of the temperawhat I claim as new, and desireftosecure by ture operate to control the electric currents which, acting through themagnets and arma ture, cause thelatter to operate the secondary valve, which latter in turn controlsthe-flow of the fluid which operates the maiuvalve, and

thus regulate the supply of heat. 3 By the n1u-- 1 g l B, of a pivoted armature and aswinging disk, the latter having. arms, as described, with a tual reaction thus produced a uniform temperature fmay be kept,

Having thus fully described my invention, f

1 and outlet ports of the-valve-casing, opposing electro-magn'ets andcircuit-breakers, a ther- Letters Patent, is J 1. r t

1. The combination of a main valve serving to govern a passage for steam, gas, air, or

other substance, an expansion-chamber whose movable wall, through proper mechanism, operates said. valve, an electrically actuated valve serving to admit a fluid under pressure into said expansion-chamber and permit its subsequent escape therefrom, said electric valve consisting of opposing electro-magnets, a magnetically-moved armature, valve mechanism controlled by the armature, and suitable circuit-breaking devices for-the circuits of the opposing magnets, also controlled by the armature, said circuitbreaking devices being independent of external closing devices, and said external circuit-closing devices,

whereby a movement of the armature in one dircetionbreaks the circuit of said magnet at a point distinct from its initial closing-point and places the opposing circuit in condition to be closed by the action of external closing devices, actuates the electric valve, and admits the fluid, under pressure into said expansible chamber, and thus operates the main valve in one direction, and the closing of the opposing circuit by its external closing device allows the escape of the fluid under pressure from said expansion chamber and operates the valve in the opposite direction, substantially as set forth.

2. In an electricallyactuated valve, the

combination of opposing electro-magnets and,

magnetically-actuated armature, a valve @011 trolled by the armature, and suitable contacts for the circuits of the opposing magnets, also controlled by the armature, but distinct and ture in one direction and breaksthe eii'cuit'of' saidmagnet at the magnetically-actuated cireuit-breaker, while it-is not broken at the initial point, and at the same time places the opposing circuit in condition, to be closed by'the action of external closing devices, substam. tiall y as set forth. f

3. In an electrically-actuated valve, the eombinationof opposing electro-magnets and magnetically-moved armature, valve mechanism controlled by the armature, and suitable contacts for the circuits of the opposing magnets, also controlled by the-armature, sard contacts being independent of external closing devices, and a thermostat in circuit with the opposing magnets, whereby a movement of the armature in one direction by one of the electrormagnets operates the valve, breaks the circuit of said magnet at one/point, and places 1 the opposing circui't'in condition to be closed by the thermostat,substantially as set forth.

4. The combination, in the casing of valve I eonnecting-arm, l2, spring 14, and theinlet mostat, and suitabie circuits controlled by said thermostat, whereby the said magnets" are energized and the valve operated, as set forth.

5. The combination, in a temperature-regn-' later, of the valves A andB, and intermediate expansible chamber connected with the disk. of valve A by a lever and with the interior of valve B by a pipe, and armature and oppos are not excited, to hold one or the other of the ports closed and the armature before the magnet last excited, substantially as set forth.

7. The combination with a main valve '0 erated by fluid-pressure, of a secondary valve actuated by opposing electromagnets, said secondary valve having opposing air-ports, and a spring or its equivalent attached to the,

valve mechanism, serving, when said electromagnets are not excited, to hold one or the otherof the ports tightly closed and'the armature in the field of the magnet last excited, as set forth. 4 l

S. Inan electrically-actuated valve,the combination, with opposing electro-magnets and their armature, valve mechanism, and circuit ljbreaking devices operated bysaid armature,

of al spring or its equivalent movingo'ver a sensitive centerwhenever either electro-mag net is energized, whereby the action of said spring tends to hold either one or the other port of the, valve tightly closed, the'armature' before the magnet last energized, and the cirouit cfsaid magnet broken, substantially as set forth. a p w v 9. In an electrically-actuatedvalve, the combination, with the electro-magnets, the magnetically-moved armature, and the valve mechanism operated thereby, of sliding circuit breaking strips,. whereby a movement of the arrnatnre in either direction breaks-the current which produced said motion and places the opposing circuit in position to be closed from an external source and at an external point,

substantially as set forth.

10. The combination of a main valve oper ated by pressure, and a secondary electricallyactuated valve serving to operate the main;

valve by fluid-pressure, said secondary valve consisting of electro magnets; amagneticallymoved armature, valve mechanism, and eirchit-breakers, whereby the closing of thecircuit at-a remote point operates the secondary andm'ainvalves'and breaks the circuit at the circnit' breaker Within the valve itself, sub- Stantially as set forth; r V

11. r In an electrically-actuated valve for controllingflnids, the combination, withthe valve fp' or ism, electric circuits controlled by external cir tion, breaks saidbreaking device, edit in condition 'ofelectro-magnetic actuating 'mechancuit-closing devices, and circuit-breaking devices, also controlled by said electromagnetic mechanismhwhereby the closing of one circuit by its external circuit-closing .device serveswhile it remains closed at the external closing device, and places the other circuit in condition to be closed by the action of its external closing device, and whereby the closing of saidother circuit by itsexternal closing device serves to operate the valve in the other direccircuit at the other circuitand places-the opposing cirto be closedby the action of its external closing device, substantially as set forth.

12. The combination,witha main valveactuated by fluid-pressure, ated secondary valve, said secondaryvalve consisting-of electromagnetic actuating mech anism, and circuit-breakingdevices, also actuated'by source operates the secondary valveand by its means the main valve at the sanietime breaks said circuit at-atpoint distinct from its the magnetic force, wherebyjthe closing of the electric circuit from some external 'tooperate the valve in one direction, breaks said circuit at one circuitrbreaking point,

of an electrically-actninitial closing point and leaves the armature atthetopposite point of its prescribed movement, substantially as set forth.

' j WARREN S. JOHNSON. Witnesses;

ALFRED MORAWETZ, RoBE rR. HOSKING.

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