US1537298A - Heating system - Google Patents

Description

E. H. GOLD ET AL HEATING SYSTEM May 12, 1925. 1,537,298

' Filed March 24, 1919 l 5 sheets-sheet 1 i l U 5 sheets-sheet 2 E. H. GOLD ET AL famme sYs'rEu FledJlarch 24, 1919 E. H. GOLD ET AL HEATING SYSTEM Filed March 24, 1919 5 SheetslShet 3 I l l 5.5

win/@5565.; f 4 @gw 72W l M'ayllZ, 1925.,` v 1,537,298 1 A E.- H. GOLD ET AL HEATING SYSTEM Fiied'march 24, 1919 5 sheets-sheet 4 UNiTED STATES PATENT OFFICE,

EGBERT H. GOLD AND EDWARD A. RUSSELL, OF CHICAGO, ILLINOIS; SAlD ALSSIGrlN'ORl TO 'SAID GOLD.

Rossana HEATING srsfrniu.

,Application filed Materiali, 1919, serial. No. 284,616.l

Toull 'wim/7iI t 11mg/ concern: Y

Be it known that we, Eemian* H. Gom) and EDWARD A. Russian, citizens ot the United States, residing at- Cliicago, inthe county of Gookand Stateot Illinois, have invented certain new and useful Iinproven'ients in Heating` Systems, ofwhich they following is a specification.

Our invention relates to a heating system, and more particularly to a lovv pressure or vapor system suitable for heating railway cars.

A railway passenger -cai is ordinarily 'in service only a ,portion yoff the time. 1n the winter season it is necessary to heat the car to a certain `extent even when it is out oiservice and provision is usually made in .railway yards 0r terminals for connectingl the steam heating system of arailway car so heated to asource or' supply or steam in the yard or terminal, this connection being` maintained during the time that the cai lis standing unoccupied but at these times it is -not necessary Yto heat the car to a noi'- mal living ten'iperature, and although itis a common practice to dothis, this practice results in vei'y great waste oi" fuel. Under ordinary circumstances it should be suiiicient to keep the car standing inthe yard at a temperature of, say, ,from forty to titty degrees lialirenheit which will su'liice to keep the water pipes and iittings `from viieezii'ig. lfzliaving;` this possibility in mind it is one oit the objects ot' our invention to provide, in connection with a steam 'heating system, particularly in connection with a vapor system, means whereby, .under certain conditions, tor example the conditions prevailingl when a car is cut ott' `trom a .locmnotivc, VJthe amount ot' radiating surface under steam-` .is :uiton'iatically reduced with a proportionate reduction of the medium circulated vthrouajh the system and whereby., when service conditions are resumed, that is, when the train is attached to a locomotive, the maximum' ythe conditions named, a variation in the amount ot active "heating sui-tace ot" the radiator, by -maiiualor other control, las may be necessary or desirable in order that during` lthe time the car ,is in service its tein;v perature may be regulated, as between day temperature and night temperature, roiample, or in order ythat the desired v'teinperature maybe maintained in ,the car under different weather conditions.r

Another object of the invention is to .pro- Vide, in a vapor or low pressure system, means whereby the presence or absence of steam-in the steam train pipe determines Whether `(subject to the action of car teinperature controlling devices operated man` ually or otherwise) the radiating surface of the heating system .or portion of the same, shall, Von the vone hand, be ysupplied with steam, or on the other hand, shall be cut ofi" from the steam supply and placed in a condition in which the water ot condensation can `vbe drained therefrom.

The steam heating system upon whichV our invention is speciiically intended to iniprove involves the use oit onev or more radiating coils to which steam is admitted at p 'lowpressure and from which the water or by a spring for eiecting the movements ot the valve with .which such motor is associated. Y

The invention consists of the novel and improved devices, .constructions and ar- Hrangements to be hereinafter described and claimed, for carrying out the. above stated objects and suoli other incidental objects will appear i'rom the Jfollowini,y description of a preferred embodiment ofthe invention.

This embodiment ofthe invention isfillustrate'd in the accompanying drawings where Fig. l is a view, in perspective, ot the controlling `elements of the 'heating system ot our invention, the Booting of the` car being shown in section. 'y

1F10'. 2 is a vertical ,sectional view .taken through one ot the shut olli and drain valves and its motor.

Fig. 3 is a View, in elevation, of the parts shown in Fig. 2.

Fig. l is a sectional plan on line 1 -lr ot Fig. 2.

Fig. 5 is a sectional plan of the shut-olif and drain valves showing their relation with each other and with the radiating coils,

Fig. G is a longitudinal sectional view ot a preferred torni ot' vapor' regulator, the function ot which is to maintain the steam in the active radiating coil or coils at substantially atmospheric pressure, and

Fig. 7 is a diagram showing the apparatus as installed on one of the cars oit a railway train and the connections between said car and the locomotive and the yard or terminal steam supply.

Like characters of reference designate like parts in the several figures of the drawings.

The heating system, in the preferred embodiment shown in the drawings, consists essentially of the following elements: A is aradiating coil which is te 1med a primary radiator because it is always under steam when the heating system is in operation. B is an auxiliary radiating coil preferably arranged in series with the primary radiator and adapted for occasional use, the two coils constituting, because of their serial arrangement, a single radiator through all ot which (both coils) or through a portion ot' which only (coil A) heating medium may be circulated in accordance with the requirement ot the car for heat. C is a steam supply pipe connected with the train line ot the car 0, 0', O2, and D a vapor regulator o't familiar construction. The supply ot steam to the primary radiator A is controlled by a shut-oli' and drain valve E. A similar valve F controls the circulation ot medium through the auxiliary radiator. These valves are operated by steam motors designated (l and ll. respectively, supplied by a. pipe I fitted to the vapor regulator on the high pressure side in alignment with pipe C, pipe l. having a branch pipe J leading to the motor H. Low pressure steam passes `troni the vapor regulator D through pipe l to the valve E of the primary radiator. L a return pipe leading from valve F ot the auxiliary radiator B bacl; to the vapor regulator. M is an air motor supplied with air under pressure from pipe N which is connected with the air system of the car, preferably with the air signal line l), P', P2. This motor controls the admission otf steam to the steam motor H associated with the shut otl'1 and drain valve F of the auxiliary radiator B so that the motor H can be actuated to open the auxiliary radiator only when there is pressure in the air signal line, that is, when the car is connected to a locomotive. The steam motor G, however, is subject to steam pressure and operates to open the primary radiator whenever the supply pipe C is under steam whether the steam is derived from the locomotive or from a steam supply in the yard or terminal.

Referring to Fig. 7, Q designates the railroad car on which the heating apparatus above described is installed, this car being assumed to be the rear car of the train. At R is shown iiragmentarily the forward car of the train. S designates the locomotive. T is the steam supply coupling at the terminal where the train, according to this tigure, is supposed to be standing. U, U', 2 is the air bralte line of the train.

ln the Figs. l to G of the drawings the parts of the apparat-us are shown in the positions which they occupy when there is pressure in the supply pipe C" but no pressure in the air line N, that is to say, the parts are in the position which they occupy when the car is disconnected from the locomotive but is being heated from the yard or terminal steam line.

In Fig. 7 the car is shown as operatively connected with the locomotive, train line l) being, therefore, disconnected from the terminal simply steam coupling T. ln the position ot the parts shown in the lirst six Figures primary coil A is active but steam is excluded trom auxiliary coil B. lith the apparatus connected as shown in Fig. 7 both primary and auxiliary coils are active.

The course ot' the steam, under these conditions, will be as follows, reference being had particularly to Figs. l, and 7: From pipe (l the steam passes at high pressure through pipe l to the steam motor (l ot' the primar)Y radiator valve E holding the valve in its open position, as will be hereinatter described. There being no air iu air lint` N the steam cannot reach the motor ll oi the auxiliary radiator valve F. l-l'ciuc this valve closes its radiator. The steam from pipe (l in passing into pipe l is rcduced in pressure by action ol the vapor regulator D and then passes into chamber l0 olvalve lll, thence to chamber' l1. ot the valve through the primary radiator A to chamber l2 ot valve lll, then to chamber lS and through a pipe lit to chamber l5 ole valve F. The valve body ot' this dcvici` be ing in position to shut-ottl the auxiliary radiator B and chambers 16 and 17 with which the ends of the radiator communicate, the steam is short circuited to chamber 18 and thence into return pipe L which extends to the thermostat chamber ot the vapor regulater.

The vapor regulator is shown in Fig. 6. It comprises a casing 'i9 divided to form a high pressure chamber Q0 and a low pressure chamber 2l, thel high pressure chamber lll) beingj` in comniuni'eationr with pipes andi li and pipel K leading from the l'owrpressure chamber 2l; rllhe port between thechambers is controlled1 by af vafl'fe' 23g the stern of which' iseonneoted to a bell' 'crank 25 pivoti'ed at' 26t to a web 27 depending from the casing 19'. A1, thermostatie lnen'rb'er 2B is arranged in athermostat easing' '29* to which pipe- Pi leads, and' supports a= rod 30 pivoted` tobell crank,` 5. The amount of steam. passing through the vapor regulator depends-Y upon the degree of expansion oit the tliermostati'e' ineniberQS- which iscon trolled by the condition of the lnediuni dischargedfi'onr the,radiating-kwil or' coils. Then the aet`V efcoil` or coils-become ill'ed with steam theV outflow' of steam throughpipe L will actuatethe-thermostat tjo close 'alve 235' limitingr the amount olistearni in^- troducectA intoftlie radiating system.

Thefvalres E andF aref alikeY in construction. asare also' thesteaan motors operating,` said vallves respectively;

It' will" kbesuiiiV cient, therefore, toL describe" oneA of these'v valves' and" theA niet-or associated therewith. Y For this" purpose We haveseliected'the auxiliary radiator valrefF and* its inotorH', these derices being'shown, so far' as details are concerned, in Figs; 2l; 3 andl 4?. The valve comprises a easingflf dividedl by interior WebsSQ, Bf, 34 and 35 5)',- into-tlie four chan'iliersl, 16,' 17,' iSabove referredto; lln' the kspace `beta-'een the Webs is a cylindrical bushing having; openings corresponding to: openings between the Webs in` which' isarranffed" aA valvebod" oli: the butteri'll rs .lf Y

cri

type provided with upper and lower discs 38 and 39,A the" lower dise' bearing upon the bottomv Web/40 of t'lie busliinn The steui 4l5 et' the valve bodfv"providedwitha handle 42 is forniednt its lower end with a flange 43fastenedY by af screwy 44tor the upper dise 38 of theM valve'body.A The stein passes through a bonnet 45; A? coi-l'spring4G is preferablyint/erposed between tlie` bonnet and; iianjre above referred tion llhe lower disc 39 of the valve bodfyV is provided with! zr drain port' 47" which `is adaptedz to register with a drain port 4 8- inl the bottoni web 40 oi the bushing 36' when tlie'valvebodf is in thev position cutting out tlle` radiatingr ooil. rThe Vbottoni ineinber49 ofthe valve casinaV is limnief-li `with a drainage duet 5"\vliiel1- communicates with aduet 5l forined in thev upper portion 522 oli the mali-'1roasingof they steam-motor, the upperportion ofthiscas-f ingr being` connected to thelower` portion by w-ebsf54.v 55'ais'a drainage pipe: leading iiroin dnot 51 through the flooring of the car, the ilhoring'-` being' indioatedl'at 56 in: Fig; 11'. 5T is a nut to hold the inotor casing $321 54 against the bottonr1nember'49 oli the ifa-life' easing. rBhe valve bodZ 3"?4 is- I formed with a borevS intor4 which entends they upper endl oli zt revoliible nienil'ier 59 provided with a collar o0i supporting' it on the bottoni inelnber 49 oft' the Valve easing' andi formed f with. an enlargement (51; proi'fi'diirgr a thrust bearing' for sueh revoluble member against the under side of said casing' 1neinber49i 'lhe uppelend ol the rerolubl'e nielnberis formed with a slot 62: ifnl which. isarranged' a: Hat slidingy latch bolt (53. he end of which is adapted to iit intoa slot (i4 in the l'ower end' of the valve stein 4l. rlle latch bolt isflrept in this position byineans of a coiled spril g' 65;' arranged inl a recess Gti in the re-vollu-blei nielnber 59. The lower end off the revolublel member is formed with aa spiral slot engaged by a projection or tliread 68 formed! on the interior` of ai sleeve 69% Whlclr is' fastened to a stud 50 pro3eet1ng:

*fronr and forming 'part' off' a. piston Zt arranged Within an enlarged bore 72 or @ylinder formed-Iy in: the lower` ineinber ot what has been termed the motor easing.' rEhe sleeve 69 isbrinedwith longitudinali slots F.intov which. project the ends of studs 'Z4 fixedI ini the casing? nieinber 'A heavy coiled.K Spring' K5 ist interposed'v between theterr ot' easing memberl and piston 7l". The lower endle of oasingrineniber 58 is; closed' ai vhead, 58! to which iss connected the' pipey which hasV been desoribed as a 'branch oii the highV pressure pipe L rlhe valve stein 4l? is formedwith a boref' throng-lr Whieh pre'-l `ieots a. puslr rodi 7T terminating; at. its; upper endiiin ai bnttoir` T8, rlhe lower end ot the push: rodi is adapted" toV hea-r against the sliding latch boli' GiSWlricli may be depressed sofas to disconnect theA Valve from the niotor to= alloxv' the valve`V to be ope y'atedmanually by' handle 421` o Ther above description appliesv to the con- S'i'rueti'on ofthe valve and motor' associated with the i.'ariinary radiator A as Well' as to that ot thel valve and: motor'associated with theV auxiliary radiator Re fllhev auxiliar; radiator; in the embodiment oli our invention shown, is adapterh asf stated, to be voon4` v trolled ultiniateh7 in accordancewith the existence ot or absence of: pressure i-nthe air linev P2. rlihe arrangement tor aecolnpli'shing` this control? will next be de'-A scribed'.V s

The airlnotor M consists off a cylinder 79 in which. arrangreda piston 80 normally held* at the inlet end-i ofi the cylinder by a. spring' 8:11. The stein of thepiston is eonneetedfto a lever SS pii-oted= at 84 to rthe motor easing. Tlielower end ot lever 83" is pivotally connected to the stein avalre 86` adapted tocontrol a port- 87 ot relatively. small; diameterbetweeir pipe .l and the port 88 leadingI` to the cylinder 72. Valvel stein passes through a gland 89, the bore 90 of? which is of greater diameter than stein 85' and is provided with a discharge-port to the atmosphere. 'lhe valve 8G is a double t'aeed valve and on its back stroke closes the duct 90.

then the air line P, P, P2 is under pressure, which occurs when the car is attached to locomotives, piston 8O will be forced toward the outer end of cylinder 79 compressing spring Si. This withdraws valve 86 trom port 87 permitting the steam pressure in pipe J to raise piston 7l, compressing spring 75. The revoluble member 6l is given a quarter ot' a turn and the valve body 37 is moved trom the position shown in Fig. to a position which puts chamber l5 in communication with chamber 16, and chamber 17 in communication with chamber 18. The drain port 47, 48 is closed and the auxiliary radiator B open to the steam supply circulating through the primary radiator A, As soon as the car is cut eff from the locomotive and the pressure in the air signal line reduced to atmospheric pressure, spring 8l will force piston 8O back to its normal position moving valve 86 to close port 87 and thereby shut off steam pressure from the steam motor. The spring et the motor returns the piston to its original position, rotating valve body 37 back to the position shown in Fig. 5. Steam in the cylinder 7 2 exhausts through ports 88, 90 and 91. In case it should be necessary to operate the valve 37 by hand, this can be done by'pressing down on push rod 77 which disconnects the valve `from the motor. However, as soon as the condition ot the pressure in air line P, P, P2 changes (in case of the mechanism associated with the auxiliary radiator B) or as soon as the condition oit the pressure in lthe supply pipe C changes (in the case ot the mechanism associated with radiator A), the turning` ot the revoluble member 59 ot the motor will re-connect, automaticallyy` the valve with the motor. 'lo illustrate the utility of this arrangement, let us'suppose that the car is taken from the yard to the terminal where, as is customary, steam train pipe O will be connected to the terminal steam supply coupling T and it is desired to heat the car rapidly before the locomotive has been attached to the train. ln such case the auxiliary radiator valve will be opened by hand but as soon as the locomotive is attached to a train and pressure is established in the air pipe P the connection between the motor and the valve will be re-established so Vthat after this the operation of the auxiliary radiator valve will take place automatically. then either ,'adiator valve is moved to shut otl its radiator a drain port is open from the radiator to the atmosphere which will allow theV escape from the radiator of any water of condensation. ln the case ot the primary radiator this opening ofthe coil :t'or drainage purposes tralies place automatically whenever the car 1s cut oil' trom the steam supply. As soon as the steam train pipe O ot Vthe car is connected to a supply ot steam,

on the locomotive or in the terminal or yard (by coupling T or a corresponding coupling in the yard) the valve is inm'iediately opened to admit steam to the radiator. The valve of the auxiliary radiator is subject to the same conditions except that in addition it is made active only in case, through the connection o'l the car to the locomotive, the air signal line P, P', l)2 is under pressure.

le claim l. ln combination, a railway car, a mechanism made operative when the car is connected with a locomotive and inoperative when the car is disconnected from the locomotive, a radiator in the ca i adapted to be supplied with heating medium trom the locomotive when the car is connected thereto and from another source when the car is disconnected from the locomotive, and automatically operated controlling means whereby heating medium is shut oil trom a portion oi' the radiator when the aforesaid mechanism is inoperative.

2. In combination, a railway car, a conduit to contain air under pressure, a radi,- ator in the car, and automatically operated controlling means whereby the heating medium is circulated through all ot said radiator when air pressure is present in said conduit and whereby said heating medium is circulated through only a portion oi' the radiator when air pressure is not present in said conduit.

lncombination, a railway car, a signalling mechanism made operative when the car is connected with a locomotive and inoperative when the car is disconnected lrom the locomotive, a radiator in the car adapted to be supplied with heating medium Ytroni the locomotive when the car is connected thereto and from another source when thc car is disconnected from the locomotive, and automatically operated controlling means whereby heating` medium is shut olf 'from a portion of the radiator when the aforesaid mechanism is inoperative.

t. ln combination, a railway car, a signal air train pipe associated therewith normally supplied with air pressure itroin the locomo tive, a radiator in the car, and automatically operated controlling means whereby heating medium when supplied to the radiator is circulated through all ott said radiator or through only a portion ot the same dcpendent upon whether air pressure is or is not present in said signal air train pipe.

5. In combination, a railway car, a radiator therein, controlling mechanism adapted to be set to establish a circulation of heating medium either through the radiator as for setting said mechanism for one ol said controls which additionaly setting means is made inoperative through actuation of the automatically actuated means. i

G. ln combination, a railway car, a radiaf tor therein, controlling mechanism adapted to be set to establish a circulation of'heating medium either kthrough the radiator as a Whole or through only a portion ofthe same, automatically actuatedmeans for sett ting said controlling mechanism for the first mentioned control on attachment of the car to the locomotive and for the second inentioned control on detachment of theV car therefrom, and manually operated'means for setting the control mechanism for the'y A second mentioned control which manually operated setting meansY is made inoperative on. actuation ofthe automatically actuated setting means. y e

7. ln combination,- a railway car, a steam trainpipe, a radiator in the car comprising tivo sections, valvesto; govern the how' of steam through said sections respectively, and controlling mechanism for said valves which is actuated automatically to set both f'alves to open position when the car is attached to a locomotive and saidtrain pipe supplied with steam and to` set one of said valves to open position and the other' to closed position when the car is detached from the locomotive and the train pipe Connet-ted with another source of supply of steam. l

8. In combination, a railway car, a steam train pipe, a radiator in the car comprising two sections, valves to govern the flow of steam through said sections respectively7 and controlling .mechanism forr said valves which actuatedautomatically tofsethoth valves to open position ivliei'ilthe car is aittached to a locomotive and said train pipe supplied with steam andto set one of said valves to open position and the other to closed position when the car is detached from the locomotive andv the train pipeconncced with another source of supply of am', and manually operable means for setting` one of saida'falves to the open positionwhen the car is detached-'from the locomotive which manuallyY operated setting means releases its control of the valve autonmticallly when the car is attached to and receives steam from the locomotive.

9. ln combination, a railway car, a steam train pipe, a radiator therein comprising a plurality of sections, valves to govern the flow of heating inediuintln'ough said sections respectively, i controlling mecli anism for saidva'l'ws adapted vto he setto alloiv the steam to circulate through the radiator as a Whole or to allow thek steam to circulate through a portion only of the' radiator, automatically actuatedv means for determining which control said controlling mechanism shall be set for, and manually operated means for setting said mechanism for one control which manually operated setting means is released by operation of said automatically actuated means.

l0. The combination with a railway car provided with a steam supply pipe and a pipe to contain compressed air, of tivo radiating coils in the car, a vapor regulator, two valves associated with said radiating coils respectively, one of said valves adapted in one position to directsteam from the supply pipe to its radiating coil and then to the other valve and in another position to direct said steam immediately to said other valve short circuiting vsaid radiating coil and opening a drain therefrom, sait other valve adapted in one position to direct steam to its radiating coil and therefrom to the vapor regulator, and in another position to direct steam immediately to the vapor regulator short circuiting its radiating coil and opening a drain therefrom, a steam niotor for operating said last namedvalve, and means actuated by pressurein said air pipe for controlling theadinissionL ofy steam to said motor. i ,y

1l. The combination with a railway car provided with af steam supply pipe and a pipe to contain compressed air, of two radiatingcoils in the car, a vapor regulator, tivo valves associated' with said radiating coils respectively, one of said valves adapted in one position to direct steam from they supply pipe toits radiating coil and then to the other valve and in another position to' di re'tt said steam in'nne'diately tofsaid other valve short cireuiting said radiating coil and opening adrain therefrom, said other valve adapted' in one position to direct steam 'to its radiating coil and therefrom to' the vapor regulator, and in another position to directv steam immediately to the vapor regulater short circi'iiting its radiating coil and opening a drain therefrom, a motor ope ated ley steam for moving said last named valve' to' the first specified position andy comt prising'a spring for moving said valve to the second specified position,l and ah valve opened by pressure insaid air pipe for, ad# inittinglsteam to said motor. e

12. rlhe conibination With a railway ear provided With a steam suppl'ypipe and a pipe to contain compressed air, of tivo' radiating coils in the car, avaporregu'lator, tivo valves associated With sa1dv` radiating coils respectively, one of said vvalves adapted lill) in one position tov direct steam from the W supply pipe to its radiating coil and then tothe other valve and 1n another position Vto direct said steam immediately to said other valve short circuiting said radiating coil and opening a drain therefrom, said other valve adapted in one position to direct steam to its radiating coil and therefrom to the vapor regulator, and in another position to direct steam immediately to the vapor regulator short circuiting its radiating coil and opening adrain therefrom, steam motors associated with said valves respectively for operating the same, and a valve actuated by pressure in said air pil e for controlling the admission of steam to one of said motors.

13. The combination with a railway car provided with a steam supply pipe and a pipe to contain compressed air; of a radiator in the car comprising a primary coil and an auxiliary coil, a valve associated with the auxiliary coil which in one position puts said coil in communication with the primary coil and in another position opens a drain from the auxiliary coil and cuts off said coil trom the primary coil, a motor the actuation of which is conditioned on the existence of pressure in said air pipe for moving said Avalve to said first speciiied position, said motor including a spring for moving the valve to the second specilied position, and means independent of the motor for operating said valve.

14. The combination with a railway car provided with a steam supply pipe and a pipe to contain compressed air; of a radiator in the car comprising a primary coil and an auxiliary coil, a valve associated with the auxiliary coil which in one position puts said coil in communication with the primary coil and in another position opens a drain from the auxiliary coil and cuts olf said coil from the primary coil, a. motor the actuation of which is conditioned on the existence of pressure in said air pipe for moving said valve to said first specified position, said motor including` a spring for moving the valve to the second specified posin tion, said valve having a handle for moving it, and means for disconnecting` the valvefrom the motor.

15. The combination with a railway car provided witha steam supply pipe and a pipe to contain compressed air; of a radiator in the car comprising a primary coil and an auxiliary coil. a valve associated with the auxiliary coil which in one position puts said coil in communication with the primary coil and in another position opens a drain from the auxiliary coil and cuts olf said coil from the primary coil, a motor the actuation of which is conditioned on the existence of pressure in said air pipe for moving said valve to said first specified position, said motor including a spring for moving the valve to the second specified position, said valve havinga handle for moving it, and means for disconnecting the valve from the motor and for re-connecting it thereto automatically when the pressure condition in the air pipe changes.

1G. rlhe combination with a railway car provided with a steam supply pipe and a pipe to contain compressed air, of two radiating coils in the car, a vapor regulator, two valves associated with said radiating coils respectively, one of said valves adapted in one position to direct steam from the supply pipe to its radiating coil and then to the other valve and in another position to direct said steam immediately to said other valve short circuiting said radiating` coil and opening a drain therefrom, said other valve adapted in one position to direct steam to its radiating` coil and therefrom to the vapor regulator, and in another position to direct steam immediately to the vapor regulator short circuiting its radiating coil and opening a drain therefrom, steam motors associated with said valves respectively for operating the same, a valve actuated by pressure in said air pipe for controlling the admission of steam to one of said motors, each of said valves being provided with a handle, and means for releasing the connection between each valve and its motor.

17. In a heatingl system, the combination of a supply pipe to contain heating medium under pressure, a radiator, a shut-oill and drain valve interposed between the supply pipe and radiator, and means actuated alternately by the presence of and absence of pressure in the supply pipe for respectively opening communication between the supply pipe and radiator and for cutting oi'l` the adiator from the supply pipe and opening a drain therefrom.

18. ln a heating system, the combination of a supply pipe to contain heating medium under pressure, a radiator, a shutfoif and drain valve interposed between the supply pipe and radiator, va motor actuated by steam from said supply pipe for operating said valve, and means whereby the valve may be disconnected from the motor and opened and closed independently thereof.

19. ln a heating system, the combination of a supply pipe to contain heating medium under pressure, a radiator, a shut-off and drain valve interposed between the supply pipe and radiator, a motor actuated by steam from said supply pipe for operating said valve, means providing a releasable connection between said valve and motor, a handle on the valve, and means for ieleasing` said connection between the valve and motor.

20. In a heating system, the combination of a supply pipe to contain heating medium under pressure, a radiator, a shut-off and drain valve interposed between the supply pipe and radiator, a motor actuated by lffl steaml 'from' saidsupply Ipipe for :operating said valve, means independent :of :the anotor -for operati-ng the Naive, land aneans kprovid-` ing a releasable connection ibetween said valve .and motor which is' automatically -reestablished when the' pressure in the supply pipe changes.

2l. In a heating system, the combination of a supply pipe tocontain heating medium under pressure, a radiator', a shut-off and drain valve interposed betweenthe supply pipe and radiator, a motor actuated by steam from said-supply pipefor operating said valve, a handle for Voperating said valve, and means associated with the handle 'for `disconnecting vthe `valve from said motor.

In aheating system, the combination of a supply pipe tocontain heating medium under pressure, a radiator, ak shuteoif Vand drain ralve'inte-rposed betweenithe supply pipe and radiator, a motor actuated by steam `from said supply pipe `for operating said Valve, a( handle for joperating said valve, and means providing a releasable Ycon-- nectionbetwecn said Valve and Ymotor which 'is automatically reestablis'hed,when change of pressure in the supply pipe takesip'lace. k23. Incombination,`-a`railway car, a `radiator therein, a supply pipe for -a heating medium under pressure and controlling mechanism adapted to be set for either -fone of two controls, one offwhich allows-a 'circulation ofjheating medium through the entire radiator and the other through only a portion ofthe same, the setti'ngqo'f said vmechanism for the first control being auto-r matically effected by attachment of the car to the locomotive Vand for vthe 'second control by detachment of the car from the locomotive both of said controls beingdependen't on pressure in said supplypipe. i 24. In combination, a railWaycan-a'conduit to contain air `under pressure, a radiator in the car, a supply pipe for the heating medium under pressure and controllingV mechanism adapted tobe set for either one of two controls, one of which allows'circulation through the entire radiator and the other `through only'a Aportion of :the same',V

the setting of said mechanism rfor the first control being-automatically effected through the introduction of `air under pressure into said conduit and forthe second controlby the disappearance of 'f pressure therefrom both of said controlsbeingdependent upon pressure in said supply pipe.

25. The combination With the signal airtrain `pipe of a `railway car, controlling mechanism adapted to be set for either one` of two controls, one of which allows circu-V lation of heating medium through the entire radiator and the other through only a portion of the same, the setting of said mechanism for the first control being automatically effected 'by pressure `in said .signal an' ftrarn pipe-and ttorfthe second .control by disappearance of pressure in said air train n actuated automaticallynnder predetermined conditions `for setting said controllingniech-V -anisnnia-'nd'manually operated setting means fforfthe controlling fmechanism which manuallyloperated setting mea-ns is .made inoperative When said automatically actuated means is actuated.

27. :'In combination, afrailway car, a radiator therein, a supply ypi'pe .for heating `medium under pressure, a conduit tofcontain air under pressure, la. valve -to .govern the vcirculation.of heating medium through .the mediator, and means for opening said valve ithe loperation =of Which is vdependent upon ipressure in both saidsupplypipe and `said .ain-conduit. l

28. y'In combination, a. -rai'lWaycar, a radiator therein, controlling mechanism adapt` editofbeIsettobestahlish a-circulationiof.heating iinedium either through theiradiator as a -Wholefor fthroughfonly a portion ofsame, and automatically actuated :means for setting said-controlling mechanism xfor the first me-n'tionedcontrol on attachmentoffthe car .to the `locomotive,la.nd for fthe second mentioned control on detachmentofk the car therefrom.

29. The combination with a. .railwaycar provided -with a steanisupp'ly pipe and a lpipeftoV contain compressed air, ofitwo fra-diu ating coils in fthe car,'a vapor regulator. two valves associated With said radiating coils, respectively, one of said valves adapt- ,ed in vone position vto direct steam from the supply vpipe to its radiating coil and then tothe other ivailve and' in another .position to direct such steam immediately to said other valve, short.-circuiting said radiating lcoiil and opening :a drain therefrom, said other valve adaptedinone position to direct steam to its radiating :coil and vtherefrom tothe Vapor regulator, and in another position to direct steam immediately to the Vapor regulator, short circ-uiting its radiating kcoil and 'ope-ning a drain therefrom, steam motors associated with said Valves, respectively, and communicating directly with the steam supply pipe so as to be 'subject to the high pressure therein, for operating said valve, anda Valve actuated by lli) pressure in said air pipe tor controlling' the admission of steam to one ot said motors.

30. In a steam heating system lfor a railway car provided with a steam train pipe, heating` means connected with the train pipe to receive steam therefrom, and mechanism actuated on cessation ot steam supply to the train pipe for opening a drainage outlet for water ot condensation trom the heatingmeans.

8l. In a steam heating` system for a railway car provided with a steam train pipe, heating,` means connected with the train pipe to receive steam therefrom, and provided with a drainage outlet ior water of condensation,` and mechanism actuated when the train pipe is supplied with steam to close said outlet and when steam is out oil:1 from the train pipe to open said outlet.

32. In a steam heating system for a railway car provided with a steam train pipe, heating means connected with the train pipe to receive steam therefrom, a valve to close communication between the train pipe and heating means providedwith a drainage outlet in communication with the heating,` means which is open when the valve is closed, and mechanism actuated when steam is shut oiil from the train pipe for moving said valve to its closed and draining` position.

35. In a steam heating system 'for a railway car provided with a steam train pipe, heating' means connected with the train pipe to receive steam therefrom, and mechanism actuated by pressure changes in said steam train pipe for opening a drainage outlet for water of condensation from said heating means on cessation of steam supply to said train pipe.

34. In a steam heating system Yfor a railway car provided with a steam train pipe, heating means connected with the train pipe to receive steam therefrom andV provided withs a drainage outlet for water ot condensation, and mechanism subject to pressure changes in said train pipe actuated,k

when the train pipe is supplied with steam, to close said outlet and when steam is cut ofi from the train pipe to open said outlet.

In a steam heating` system for a railway car provided with a steam train pipe,

'heatingmeans connected with the train pipe to receive steam therefrom, a valve to close communication between the train pipe and heating means provided with a drainage outlet in communication with the heating means which is open when the valve is closed, and mechanism subject to pressure changes in the `train pipe actuated when steam is shut oli' from the train pipe for movingl said valve to its closed and draining position.

V3G. In combination, a railway car, a mechanism made operative when the car is con nected with a locomotive and inoperative when the car is disconnected from the locomotive, a radiator in the car adapted to be supplied with steam from the locomotive when the car is connected thereto and from a dilerent source when the car is disconnected from thev locomotive, automatically operated controlling means whereby steam is excluded from a portion of the radiator when the aforesaid mechanism is inoperative, and means lor maintaining the steam in said radiator, or portion .of the same as the case'inay be, at a substantially uniform pressure.

` 37. In combination with a railway car, a steam train pipe adapted to be supplied with steam from a locomotive and also from another source of supply oi steam when the car is disconnected Yfrom the locomotive, an

-air train pipe adapted to vbe connected with a source oit supply of air under pressure on the locomotive, a radiator in the car, means whereby steam is excluded from a portion ot the radiator when the car is cut oli from the locomotive and the train pipe connected with said other source of supply of steam, and means -i'or maintaining the steam in said radiator, or portion of the same as the case may be, at a substantially uniform pressure.

38. In combination, a railway car, a radiator therein adapted to receive steam, controlling mechanism adapted to be set to establish a circulation ot steam through the radiator as a whole or through only a portion of the same, automatically actuated means for setting,` said controlling mechanism :t'or the first mentioned control on attachment of the carto the locon'iotive and ior the second mentioned control on detachment of the car therefrom, and means for maintaining,` the steamin said radiator,V or

portion of the same as the case may bc, at a relatively uniform pressure.

' EGBERT II.- GOLD.

EDWARD A. RUSSELL.

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