US1114270A

US1114270A - Heating system.

Info

Publication number: US1114270A
Authority: US
Inventors: John H Kinealy
Original assignee: Individual
Current assignee: ANDREW G PAUL Co
Priority date: 1903-04-10
Filing date: 1904-05-16
Publication date: 1914-10-20
Anticipated expiration: 1931-10-20

Description

J. H. KINEALY. HEATING SYSTEM.

APPLICATION FILED MAY 16, 1904.

1,1 14,270. Patented Oct. 20, 1914.

4 SHEETS-SHEET 1.

3 INVENTOR A? ATTORNEYS THE NORRIS PETERS CO. PHOTO-LITPLI, WASHINGTON. n. z;

J. H. KINEALY.

HEATING SYSTEM.

APPLICATION FILED MAY 16, 1904.

Patented 001;. 20, 1914.

4 SHEETS-BEBE! 2.

WITNESSES:

THE NORRIS FETERS cu. PHOTO-LITHQ. WASHINGTON. D. C,

J. H. KINEALY.

HEATING SYSTEM.

rrmornon FILED MAY 16, 1904.

Patented Oct. 20, 1914.

4 SHEETS-SHEET 3.

THE NORRIS PETERS C0,.PHO10-LITH-1. WASHINGTON. D. c.

J.H.KINEALY.

HEATING SYSTEM.

APPLICATION FILED MAY 16, 1904v Patented Oct. 20, 1914.

4 SHEETS-SHEET 4.

1 3 & 1

72 l' 't' r g a lmz/ ATTORNEY$ THE NORRIS PETERS C04. PHOm-LITHQ. WASHINGTON. D C.

UNITED ornv H. KINEALY, or Bos'roiv, MASSACHUSETTS, assieivon, 13vv MESNE AssrenMEiv'rsf 'ro ANDREWG. PAULCOMPANY, A oozaronarroiv or MASSACHUSETTS.

. HEATING svs'rnivr.

Original application filed Aprillfl, 1903, Serial No. 152,008. niviaea'ana' this application filed Mayie,

1904. Serial No. 208,103.

To aZZ whom it may concern Be it known that I, JOHN H. KINEALY, a citizen of the United States, residing in Boston, in the county of Sufiiolk and State of Massachusetts, have'invented a new and use ful Improvement in *Heating Systems, of which the following is a full, clear, and eX- a'ct specification, reference being had to the accompanying drawings, which form a part hereof.

My invention is a division of my application Serial No. 152008, filed April 10th 1903, and it relates to heating systems inwhich steam is used as the heating medium.

It relates to that form or type of system in which the water of condensationand' the air are removed through the return or discharge pipe, as distinguished from that type of system in which the air is removed through a separate air pipe.

The object of my invention is to prevent the passage of a substantial for material amount of steam from the heater or" the radiator into the discharge pipe, while allowing air and water to be discharged from the heater or radiator, thus enabling the heating to be done more economically, and

allowing theuse of smaller pipes for supplying the steam to the heaters or radiators, and for discharging the a r and water there:

from, and making it easier to maintain high vacuum in the dischargejplpe because 1 of the absence of 'any n'aterial amount of" steam in said pipe. 7

Another object of my invention is to enable steam to be used or-maintained at different pressures in the different heaters or radiators, the steam being supplied tothe My invention also consists in combining with some or all of-the elements above men tioned, an exhauster or exhausting device connected with the escape or discharge pipe.

My invention also consists in combining with some'or all of the elementsabove mentioned a thermostat arranged toco'ntrola valve on the supplypipei i Specification of Lettersiatent. Patented Oct 20, 1914; I

My invention also consists in certain other features of construction and combinations of parts hereinafter described and claimed. My invention is fully shown in the accom panying drawings, in which I Figure 1 shows one embodiment ofmy in ventionn'in which an ordinary hand valve is [used in the supply pipe, and the discharge pipe which'is providedwith the automatic valve device 1s connected to a receiver or trap, and an eXhauster is also connected to the receiver or trap 5 Fig. 2 showsasimilar form of the invention having the additional featureof a valve .onthe supply pipe con trolled by a thermostat ';Fig. 3 shows a form of the inventlon' n which no receiver is used, but"theiexhauster is connected directly with the end of the discharge pipe;

system having two heaters or radiators, each provided with an ordinaryvalve in the sup- .ply pipe and the automatic valve device in big. 4 shows my invention as embodied in a i improved systemto attainthe objects above set forth; Figs. 6, 7, 8, and 9show other forms or modifications of such a valve de-[ vice.

Similar numbers indicate similar pants the diifer'ent figures. Referring to Fig. l, 1 is a heater or radiator; *2is a supply pipe 3 is a discharge pipe;4- is'myiimproved valve device which is placed on the discharge pipe; 5 is a' receiver or trap into which the water and the 1 I air pass-which escape fronrthe'hcater or radiator-"through the ViLlVG dQVlCG; 7 1s. a, pipe connectlng the receiverwlth the atmosphere, and Gis'a suitable valve .ontlie said pipe; 8 isa pipe through which the water may be discharged or drawnotf from the receiver or trap and caused to iiow to the boiler or elsewl'iere, as n'iayIbe'c'lesired.

9'is an 'ordinaryhand valve on the supcheck valve that will open outward, but will not open inward, and that will thus prevent the pressure in the receiver or trap from. eX-,

ceeding that of the atmosphere while allowing it to be less than the atmosphere.

The construction of one form of my improved automatic valve device 4 is clearly shown in Fig. 5. Referring to this figure, 11 is a valve casing; 12 is a fluid pressure motor connected with and operating a valve piece 20, .whichcontrols an outlet or discharge port 19. The upper part of the casing is fitted with a cap 13 which is fastened to the casing by suitable screw-threads, as shown, or many other way. This forms in the upper part of the casing, a'fluid pressure chamber 14: above the fluid pressure motor. The form of fluid pressure motor used in this valve is a piston which is fitted to the casing so as to movezup and down readily in the casing, but not to permit any substantial amountof air or steam to escape past the piston between thepiston and the wall of the casing. The piston is provided with a projecting portion 15 extending downwardly and carrying at its lower end thevalve piece 20. 16 is an equalizing.

passage extending, through the motor and through the downwardly projecting portion 15 so that the lower end of this equalizing passage is adapted to. be closed or. sealed by an accumulation of the water of condensation in, the casing. This equalizing passage connects the fluid pressure chamber 14, with the inlet side of the valve, and is.

made of such, a size as to permit air and steam to flow through it from the inlet side to the fluid pressure chamber, and also to permit some water to flow through it afterits lower end has been sealed, as already explained. 17 is another passage through the downwardly projecting portion of the fluid pressure motor, which operates as an escape'pipe to permit the escape of air and water from the fluid pressure cham ber 14 to the discharge pipe 3, 18is a plug supported by the casing. In the form shown the plug is provided with a screw-thread which takes into a screw-thread. in the cap 13. In this way the plug is made adjustable so that itcan be moved up or down relatively to the cap13. 21 is a small cover or cap which is secured or otherwise suitably fastened. to the cap 13, and serves to protect the plug 18 and prevent its being interfered with after it has been once adjusted. Theupper end 'of the passage 17 is enlarged so as'to form a secondary chamber 24 in the motor. The lower end of the plug 18 in its normal position projects downwardly into the secondary chamber 24, and is thus 1 arranged so as to form a passage 25 connecting the fluid pressure chamber with the secondary chamber 24. The passage 25 is smaller than the equalizing passage 16, and is of such a size as to ofier greater resistance to the flow than the equalizing passage, It :will be seen that inthis construction the passage 17 is an escape pipe with which the passage 25 connects the fluid pressure chamber through the secondary chamber 24.

When, the piston 12 rises, the passage 25 between, the piston and the plug is increased in length, and is. thereby restricted in capacity when the motor is raised. It willbe seen, also, that the passage 25. is so arranged as to be connected with the lower part of the fluid. pressure chamber let when the motor is in its raised position as well as when the motor isin its lowest position. 26 is the inlet port of the valve. a

In the best form of the valve device, the fluid pressure motor is made to work easily and with a slight difference of pressures on its upper, and lower sides; the equalizing passage 16 is fairly large so as to permit the easy flow of air and steam and of some por tion of the water from the inlet side of the valve casing into the fluid pressure chamber 1a the passage 25 must be large enough to permit the passage of water from the fluid pressure chamber 14.- to the secondary chamber2l, but tosomewhat retard the flow of the water between these two points.

- The operation of the valve device is as follows: hen the pressure in the heater or radiator is greater than that which exists in the discharge pipe, any air which may be in the heater or radiator is forced out and into 1 the valve casing through the inlet port 26; then it passes through the equalizing passage 16 into the fluid pressure chamber 14:, and from there through the passage 25 into the secondary chamber 24:, and from there through the passage 17 into the discharge pipe. When steam enters the heater or radiator and isl; condensed, the water of condensation which forms therein flows out of the radiator and into the valve casing through the inlet port 26, and gradually accumulates therein until it fills the bottom part of the casing and seals or closes the lower end of the equalizing passage 16. As a result of this, the pressure in the fluid pressure chamber 1%1 will become less than the presure in the upper part of the valve casing below the fluid pressure motor, and the pressure in the secondary chamber 24; willalso be less than the pressure underneath y then its influence upon the operation of thedischarge pipe.

the-fluid pressure motor. 'Thefluidpressure motor will, therefore, rise, lifting the valve piece 20, and will thus open the outlet port 19 and allow the Water to pass from the lower portion of the valve easing into the Some w'aterwill pass up through the equalizing passage 16 into the fluid pressure .chamber 14, and will collect on top of the fluid pressure motor. When the motor rises, the lower end of the sealed, andas a result of this, the pressure in the fluid. pressure chamber 14 will be-' come equal to that which exists in the valve casing underneath the motor. 'At this time the water which has passed through the equalizing passage 16 into the fluid pressure chamber 14 is flowing through the passage 25. The size of the passage 25 is such that the escape of this water through the same is retarded. As a. result of. this-operation, the fall of theffluid pressure motor and the closing of the outlet port 19 are retarded. When all, or a portion of the water which flowed through the passage 16 into the fluid pressure, chamber 14 has escaped throughthea passage 25,, the valve closes.

In actual operation with the valve properly adjusted when the sizes of the fluid pressure motor 12, the equalizing passage 16, the passage 25and the secondary chamber 2 1 are properly proportioned, the fluid pressure motor will not operate to open the outlet port-l9,-when only air'or steam when water comes to the valve device the fluid pressure motor operates, as described,

to allow the water tolpass into the discharge pipe without allowing" any material amount ofsteam to pass with it. The amount which the valve device 20 is lifted, and the extent to which the outlet port is thereby opened, are automatically "regulated with reference to the amount of water coming to the valve device. The influence of .the secondary chamber upon the operation of the fluid pressure motor depends upon its size and upon the weight of the fluid pressure motor and the 7 parts attached to it. If the secondary chamber be made so small asto be simply acontinuation of the passage 17 motor is apt to be small, and the benefit of the construction may be entirelydue to the passage 25, the effect of which is automatically controlled by the condition of the fluid passing through it. 1 By adjusting the plug 18, that is, by moving it up or, down relatively to the normal position of the motor 12, the area or capacity of the passage 25 canbe varied: The farther down the plug is-moved,'the longertlie passage willbecome, and the greater will be the retarding effect which it produces upon the.

' flow of waterv through the same, The plug is adjusted atsthe start to meet the conditions of the system, and-its position need not be altered thereafter during the operation of the device. If it becomes desirable to 'openthe valvevwide in order to clean the same, this can be done by-111nscrewing-the 0511121 andgunscrewing the plug "suff ciently to lift itentirely out of the passage through the motor.

equalizing passage 16 will be opened or un- I Myimproved valve device can be used in is employed.

Inthe system represented in Fig.1, the

discharge pipe discharges into a receiver or trap 5. The exhauster 10 is connected with the receiver, and operates to produce a vacuum in the receiver 5' and-in the discharge pipe 3. I By employing theexhauster andproduci-ng a vacuum inthe discharge pipe,'the radiators or heaters can be run at any pressure'desired below or "above an mosphere, and different radiators can be run at difierent pressures In the system shown in Fig.1, the air is withdrawn from the systemthroughthe receiver or trap 5 and exhauster 10, and the water is withdrawn ordischarged through the pipe 8 by any'suitable means, Without water comes to the valve device, but

Referring toFig. 2, the parts are the same asalready described in connection with Fig. 1, except that the supply valve 9 is op- 7 v '75 pressure systems where atmospheric pres than atmosphere iscarried in the "system, a but the advantages 'of-my invention willbel more completely realized wherean exhauster erated by a thermostat '27 placed on the wall of-the room or in any other suitable;

location. Any suitable or well known arrangement of therniostat and supply valve maybe used for. thispurpose. In the draw-J ing I have represented a supply valve controlled by *a diaphragm and 'apipe running from this diaphragm to the thermostat 27 and continuing from the'thermostatto an exhauster or to asource of fluid under pres- The exhauster or sourceof fluid unsure. der pressure is not shown in the drawing.

close the pipe by any well. known means, operating when it closes the pipe to. at the I same time open a vent tothechamber above the diaphragm. I have'notfshown thedetails of construction in this figure as they are well known in this art,'a'nd separately consideredformwno part. offlniy invention.

Moreover, this part of my invention is not,

chargepipe 3 is connected directly. with the exhauster 10,without;th'e use of any xre- Thethermostatcan be made to open and sch ceiver. In this construction, the. water and airare removed by the exhauster and pass through the exhausting device.

In Fig. 4 I have shown a system having two or more radiators each radiator being provided with one of my improved automaticvalvedevices 4, as shown. The upper radiator in this figure is provided with; a

supply pipe attached to the top of theradiator, whereas the lower radiator hasxa supply connection leading to the bottom of the radiator. In this system, no exhauste-r is used, as the system is intended to be 0perated under pressure. The air and water pass into the receiver or trap 5, from which the air escapes through the pipe 34,. and the water is discharged through the pipe 8.

In Fig. 6 I have shown a modification of my automatic valve device. In this form of my improved valve, the motor 12 is made in the form of a diaphragm, which is sup? ported in any suitable manner at its edge between the casing 11 andv the cap 13. The diaphragm is attached in any suitable way at the center thereof to the downwardly pro- 1 jecting part 15, which carries at its lower end the valve piece 20. This valve operates in substantially the same manner as the valveshown in F ig.-5.

In Fig. 7 I have shown another modification of my improved valve device, difiering from the valve shown in Figs. 5 and 6 in the respect thatthere is no passage 17 through the downwardly projecting part of the motor. In place of this passage there is an escape pipe 28 connected with the top of the plug 33, and there is a passage through the plug connecting the escape pipe with the secondary chamber 24. In this construction I prefer to connect the escape pipe 28 with an eXhauster. This valve operates in substantially the same manner as already explained, except that the. air and water which pass into the chamber 24 instead of escaping downwardly into the discharge pipe 3, escape through, or are drawn through the escape pipe 28.

In Fig. 8 I have shown another 1nodification of my improved valve device differing from the valve shown in Fig. 5 onlyin respect to the particular construction and arrangement of the plug 18. In this-modification the plug 18 extends through abearing in the cap 13 and is movable up and down in that bearing by means of the thumbpiece 29. The plugis surrounded bya coiled spring 30. bearing at its upper end when this is done the valve will open- The plug 18 is therefore a. movable plug. In other respects the. valve device is constructed] and operates the same as the valve device illustrated in Fig.

' In Fig- 9 I have shown another modification of my improved valve device. In this 1 lie-rm of my invention the cap 13 or the easis provided with a hollow plug or projection 35 extending downwardly as shown. The motor is. provided with an upwardly extending projection 31 between which and the protection 35 a second passage is formed as shown. 82 is a secondary chamber which in this case is in the plug orprojection 35 and this chamber is connected with an escape pipeQS passing-through the top of the casing. This form of valve operates in substantially the same manner as the form of valve shown in Fig. 7.

It will be obvious that some of the details of my invention may be changed in construction, and that the parts may be somewhat differently arranged from what is shown in the drawings.

Some of the advantages of my invention are as follows. The air is removed quickly and certainly whenever it enters or collects in the radiator. The water is removed quickly and certainly whenever it accumulates in any substantial quantity in the casing of the valve. No substantial amount of steam is lost or. wasted through the discharge pipe. The valve works auto1natically, according to the requirements of the particularradiator to which it is attached. The valve is simple and durable in construction, and is not likely to get out of order or to need repairing. The valve is practically noiseless in its operation. The valve is economical to manufacture, and is certain in its operation. In my improved system, the difierent raidators canbe operated successfully at very low presures, thereby producing great economy in the consumption of steam. The operation of the separate raidators can also be separately controlled so as to vary the pressures in the different radiators according to the requirements of the system. My

the casing forming a fluid pressure chamber on one side of said controlling piece, said valve device provided with an equalizing passage connecting said fluid pressure chamber with the inlet and a second passage connectingthe fluid pressure chamber with an outlet, and means for automatically varying the resistance to the flow of liquid in said passage. 7

2. The combination in a heating system ofa heater or radiator, a supply pipe, a dis charge pipeand a valve device in the discharge pipe comprising a valve casing provided with a discharge port and aninlet port for the water, a valve piece controlling the discharge port, a fluid pressure motor controlling the valve piece, the casing being provided with a fluid pressure chamber on one side of the motor,.said valve device provided with an equalizing passage connecting the fluid pressure chamber and the inletsideof the valve adapted to permit the flow through it of air and steam and some water,

an vescape pipe, and ansecond passage connecting the fluid pressure chamber with said escape pipe, and adapted to be restricted capacity when the motor-is raised. I i

3. The combination in aheatingsystem of aradiator, a supply pipe, a discharge pipe, and a valve device in the discharge pipe, said valve device including a valve casing provided with a discharge port and an inlet port, a movable valve member controlling said discharge port, a valve controlling pieceoperated by fluid pressure; the casing forming a fluid pressure chamber on one side of said controlling piece, said valve device provided with an equalizing passage connecting said fluid pressure chamber with the inlet and a second passage connecting the fluid pressure chamber with an outlet, and discharge means for automatically varying the resistance to the flow of liquid in said passage consisting of a scr'ew' threaded plug.

4. The combination in a heating system of a radiator, a supply'pipe, a discharge pipe, and a valve device inthe discharge pipe,vsaid valve device comprising a valve casing provided with a discharge port and an inlet port, a valve piece controlling the discharge port, a fluid pressure motor controlling the valve piece, the casing forming a fluid pressure chamber on one side of the motor, said valve device provided with an equalizing passage through the motor connecting the fluid pressure chamber and the inlet side of the valve and a second passagehconnecting the fluid pressure chamber with an escape pipe, means for automatically varying .the resistance to the flow of liquid through said second passage, and an escape pipe, substantially as set forth. 1 I

.5. The combination in a heating system of a heater or radiator, a supply pipe, a dischargepipe and a valve devicein the discharge pipe, comprising a valve casing protrolling: the valve piece, the casing being provided with a fluid pressure chamberjon one side of the motor, said valve device provided With an equalizing passagethrough the motor connecting the fluid pressure chamber and the inlet side of thevalve and adapted to besealed by anaccumulation'of liquid in the casing and a second passage through the motor connecting the fluid pressurechamber withthe discharge pipe, the second passage being smaller than the 'equalizing passage and of such a size as to permit theescape of air but to retard'the escape of water, and being adapted tobe restricted in i i capacity when'the motor is raised, r substantially. as set forth. j

6. The combination in a heating system of a heater or radiator, a supply pipe, a discharge pipe, and a'valvc device comprising a valve casing provided with a'i discharge port and an inlet port/for the-water, avalve piece controlling the discharge port, aJfluid pressure motor controlling the valve piece, the casing being provided with a fluid pres sure chamber on one side of the motor, said valve device provided with an equalizing passage connecting the'fluid pressure chainber andthe inlet side of the valve adapted topermit the flow through it of air and steam. and some water, aplug supported by c the casing, and a second passage betweenthe' plug and the motor connecting the fluid pressure chamber with an escape pipe,'and an escape pipe, substantially asset forth. 7. The combination in a heating system of a heater or'radiator, a supply'pipe, a discharge pipeand a valve device in the discharge pipe comprisinga valve casing provided with a discharge port and an inlet port for the water, a valve piece controlling the;

discharge port, a fluid pressure motor con? trolling the valve piece, the casing belng one side of the motor), said valve device provided .withan equalizingpassage connecting I v the fluid pressure chamber and the inlet side of the valve adapted to permit the flow. through it of air steam and some water and a second passage'in the motor CORHGCU- mg the fluid pressure chamber, with an escape pipe, a plug supported by the casing and projecting into the second passage,'and anescape pipe, substantially as set forth. I

8. The combination in, aheating system'ofaheater or radiator, a supply pipe," a .dis-

charge pipe and a valve device in the dis-:

charge pipe comprising avalvecasing pro-- vided -with a discharge port and an inlet. port for the water, a valve piece controlling the discharge port, a fluid pressure vmotor provided with a fluid pressureichamber on controlling the valve piece, thecasing being r 1 10 providedwith a' fluid pressurepchaniber on one side of the motor, said valve device provided with an equalizing passage connecting the fluid pressure chamber and the inlet side of the valve adapted to permit the flow through it of air and steam and some water and a second passage in the motor connecting the fluid pressure chamber with an escape pipe, an adjustable plug supported by the casing and projecting into the second passage, and an escape pipe, substantially as set forth.

9. The combination in a heating system of a heater or radiator, a supply pipe, a discharge pipe and a valve device in the discharge pipe comprising a valve casing provided with a discharge port and an inlet portfor the water, a valve piece controlling the discharge port, a. fluid pressure motor controlling the valve piece, the casing being provided with a fluid pressure chamber on one side of the motor, said valve device provided with an equalizing passage connecting the fluid pressure chamber and the inlet side of the valve adapted to permit the flow'through it of air and steaman'd some water and a secondary chamber in the motor, a plug supported by the casing andprojecting into the secondary chamber and so arranged as to form a passage between the fluid pressure chamber and the secondary chamber smaller than the equalizing passage, and an escape pipe connected with the secondary chamber, substantially as set forth.

10. The combination in a heating system of a heater or radiator, a supply pipe, a discharge pipe and a valve device in the discharge pipe comprising a valve casing provided with a discharge port and an inlet .port for the water, a valve piece controlling the discharge port, a fluid pressure motor controlling the valve piece, the casing being provided with a fluid pressure chamber on one side of the motor, said valve device provided with an equalizing passage connecting the fluid pressure chamber and the inlet side of the valve adapted to permit the. flow throughitof air and steam and some water and a secondary chamber in the motor, an adjustable plug supported by the casing and projecting intothe secondary chamber and soarranged'a's to form a passage between the fluid pressure chamber and the secondary chamber smaller than the equalizing passage, and an escape pipe I connected with the secondarychambe'r, sub- 'stantially as set forth.

. 11. The combination in a heating system of a heater or radiator, a supply pipe, a discharge pipe and a valve device in the dischargepipe comprising a valve casing provided with a discharge port and an inlet portfor the water, a valve'piece controlling the discharge port, a fluid pressure motor controlling the valve piece,- the casing being [provided with a fluid pressure chamber on one side of the motor, said valve device pro vided with an equalizing passage connecting the fluid pressure chamber and the inlet side of the valve adapted to permit the flow through it of air and steam and some water and a secondary chamber in the motor, a plug supported by the casing and projecting into the secondary chamber and so arranged as to form a passage between the fluid pressure chamber and the secondary chamber smaller than the equalizing passage, and .a passage through the motor connecting the secondary chamber with the discharge pipe, substantially as set forth.

12. The combination in a heating system of a heater or radiator, a supply pipe, a discharge pipe, and a valve device in the discharge pipe, said valve device including a valve casing provided with a discharge port and an inlet port, a valve piece controlling said discharge port, a fluid pressure motor controlling said valve piece, the casing forming a fluid pressure'chamber on one side of said motor, said valve device provided with an equalizing passage through said motor connecting said fluid pressure chamber with the inlet and a second passage through the motor connecting the fluid pressure chamber with the discharge pipe and means whereby the resistance of said second passage is automatically varied to ofler greater resistance to the flow Within the first named passage, substantially as set forth.

13. The combination in a heating system of a heater or radiator, a supply pipe, a valve in thesupply pipe, a discharge pipe and a valve device in the discharge pipe comprising a valve casing provided with a discharge port and an inlet port for the water, a valve piece controlling the discharge port, a fluid pressure motor controlling the valve piece, the casing being provided with a fluid pressure chamber on one side of the motor, said valve device provided with an equalizing passage connecting the fluid pressure chamber and the inlet side of the valve adapted to permit the flow through it of air and steam and some water and a second passage in the motor connecting the fluid pressure chamber with an escape pipe, a; plug supported by the casing and projecting into the second passage, a thermostat controlling the valve in the supplypipe, and an escape pipe, substantially as set forth.

14. The combination in a heating system of'a heater or radiator, a supply pipe, a valve in the supply pipe, a discharge pipe and a' valve device in the discharge pipe comprising a valve casing provided with a discharge port and an inlet port for the water, a valve piece controlling the discharge port, a fluid pressure motor controlling the valve piece, the casing being provided with a fluid pressure chamber on one side of the it of air and steam and-somewater and a secondary chamber in the motor, a plug supported by the casing and pro ecting mto the secondary chamber andso arranged as to form a passage between the fluidpres' sure chamber and the secondary chamber smaller than the equalizing passage, an escape pipe connected with the secondary chamber, and a thermostat controlling the valve in the supply pipe, substantially as set forth. V

15. The combination in a heating system of a heater or radiator, a supply pipe, a valve in the supply pipe, a discharge pipe and a valve device in the discharge pipe comprising a valve casing provided with a discharge port and an inlet port for the water,.a valve piece controlling the discharge port, a fluid pressure motor controlling the valve piece,

, the casing being provided with a fluid pressure chamber on one side of the motor, said valve device provided with an equalizing passage connecting the fluid pressure chamher and the inlet side of the valve adapted to permit the flow through it of air and steam and some water, a secondary chamber in the motor, a plug supported by the casing and projecting into the secondary chamber and so arranged as to form a passage between the fluid pressure chamber and the secondary chamber smaller than the equalizing passage, and a passage through the motor connecting the secondary chamber with the discharge pipe, and a thermostat controlling the valve in thesupply pipe, substantially asset forth.

16. The combination in a heating system of a heater or radiator, a supply pipe, a valve in the supply pipe, a discharge pipe and a valve device in the discharge pipe comprising a valve casing provided with a discharge port and an inlet port for the water, a valve piece controlling the discharge port, a fluid pressure motor controlling the valve piece, thecasing being provided with a fluid pres sure chamber on one side of the motor, said valve device provided with an equalizing passage connecting the fluid pressure chamber'and the inlet side of the valve-adapted to permit the flow through it of air and steam and some water and asecond passage in the motor connecting the fluid pressure chamber with an escape pipe, a plug supported'by the casing and projecting into the second passage, an escape pipe, a thermostat controlling the valve in the supply pipe, and an exhausting device connected with the escape pipe, substantially as set forth.

17. The combination in a heating system of a heater or radiator, a supply pipe, a

valve in the supply pipe, a discharge pipe and a valve devlce in the discharge pipe compris ng avalve casing provided with a I discharge port and an inlet port for i the water,a valve piece .controllingthe discharge port, a fluid pressure motor controlling the valve piece the casing being provided with" a fluid pressure chamber on one side of the motor,jsaidvalve device provided Witlran equalizing passage connecting the fluidpressure chamber and the inlet side of the valve adapted to permitthe flow through it of. air and steam and some water and a secondary chamber in themotor, a plug supported by the casing and projecting into the secondary chamber and so arranged as to form a passage between the fluid pressure chamber and the secondary chamber smaller than. the equalizing. passage, an escape pipe connected with the secondary chamber, a thermostat controlling the valve in the supply pipe,and an exhausting device connected with the I escape pipe, substantially as set forth. c

18' The combination ina heating system i of a heater or radiator, a supply plpe, a (11s- ,charge pipe and a valve device in the discharge pipe comprising a valve casing pro vided with a discharge port and an inlet port for the water, a valve piece controlling the discharge port, a fluid pressure motor controlling the valve piece the casing being provided with a fluid pressure chamber on one side of the motor, said valve device provided with an equalizing passage connecting the fluid pressure chamber and the inlet side i of the valve adapted to permit the flow through it of air and steam and some water, a secondary chamber in the motor, a plug supported by the casing and projecting into the secondary chamber and so arranged as to form a passage, between the fluid pressure chamber and the secondary chamber smaller than the equalizing passage, and a passage through the motor bonnecting the secondary,

chamber with the discharge pipe, and a trap into which the discharge pipe empties, sub-- stantially as set forth. j i

19. The combination in a heating system of a heater or radiator, a supply pipe, a discharge pipe and avalve deviceinthe dis charge pipe comprising a valve casing provided with a discharge port and an inlet port for the water, a valve piece controlling the discharge port, a fluid pressure motor; controlling the valve piece, the *casingbeing provided with a fluid pressure chamber on one side of the motor, an equalizing passage connecting the fluid pressure chamber and the inlet side of the valvea-dapt'ed .to permit the flow through it of air and steam and some water, a secondary chamber in the I motor, a plug supported by the casir'ig and projecting into, the secondary chamber and so arranged as to form a passage between thefluid pressure chamber and the secondary chzimber smaller than the equalizing passage, name to this specification, in the presence of alnd a passage thfi'ough the motor connecting two subscribing Witnesses. tiesecondar c amber with the discharge pipe, a trap into which the. discharge pipe JOHN KINEALY" 5 e111pties','and an exhausting device connected Witnesses;-

with the trap, substantially as set forth. ,E. G. BIRTWEIL,

In testimony whereof I have vsigned my GEORGE D. WILDES.

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