US987566A - Steam-heating system for sleeping-cars. - Google Patents

Description

E. H. GOLD. STEAM HEATING SYSTEM FOR SLEEPING CABS.

APPLICATION TILED T13R21. 1910.

Patented Mar. 21, 1911.

4 SHEETS-SHEET 1.

E. 'H. GOLD. STEAMHEATING SYSTEM FOR SLEEPING CARS.

APPLICATION I'ILBD $113.21, 1910.

Patented Mar. 21, 1911. I

4 SHEETS-SHEET 2.

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E. H. GOLD. STEAM HEATING SYSTEM FOR SLEEPING CARS.

APPLICATION FILED FEB.21,1910.

987,566. Patented Mar. 21, 1911-.

4 SHEETS-SHEET 3.

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E. H. GOLD.

STEAM HEATING SYSTEM FOR. SLEEPING CARS.

APPLIUATION TILED FEB.21, 1910.

Patented Mar. 21, 1911 4 SHEETS-SHEET 4.

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UNITED STATES, PATENT OFFICE. 1

serum H. com), or cnrcaeo, rumors.

. STEAM-HEATING SYSTEM FOR SLEEPLNG-CABS.

Specification of Lettersfatent. Pa d'p .21 1911- ori inal applicatiomflled November as, 1903*, Serial in 464,057. Divideda-nd this application filed February 21., 19,10.

To aZl'whom it concern:

Beit known that I, EGBERT H. Gonna citizen of the United States, residing at Chica min the county of Cook and Stateof I1'l1nois,have inventcdcertain new and useful Improvements Systems for Sleeping-Cars, of which the following'is a specification.

My invention relates to a steam heating system which is especially intended and adapted for-the heating of sleeping cars, although the system or certain of its featuresat least, might'beemployed upon other sorts of railroad cars, or in other situations Where like conditions prevail.

The invention has for its primary object to provide a heating system of new andimproved construction in which the heating or radiating means comprises two separate radiating units," radiators or coils, which are adapted to receive the heating medium from a common source of supply and which are arrangedclose together so that one heats the same region heated by theother, or a portion thereof, In such a system when applied to the heating ofa sleeping car, or the like, one radiator or coil is preferably arranged so that itruns the entire length of a car adjacent the water pipes and their fittings and attachments. This coil is designed to be kept constantly supplied with the heating medium whenever the car is to be heated at all; and as a result sufficient heat is always provided in the right places to keep the water pipes from freezing up. Furthermore if the car is to be heated at all it isheated evenly and throughout its entire length. This radiator may betermed a primary radiator. 7' The other-coil which maybe termed a secondary or supplemental radiator'is intended to be used only when an, additional amount of heat is required as for example during, the daytime in severe weather or when the car is first heated up. In the sleeping car the primary radiator, as stated, will run the entire length of the car while the supplemental radiator may extend-only through a portion of the car, as for example through the berth section.

There. may-"be other similar supplemental coils in the-toilet and compartment sections if desired. If, in a system of'thisj'sort, con-i sisting of two coils primary and supple-- mental connected'up to a common source of supply and utilized for'the' circulation of in Steam-Heating Serial No. 545,133. I

vapor steam by the control of inflow in accordance with the thermostatic condition of outflow, the vapor were allowed to enter and flow through either coil, when both are intended to be used, itwould inevitably follow=the path of least resistance, to a greateffective resistance of said coil so that, in-

the event of the supplemental coil being opened up, the medium is compelled to flow' through the latter aswell as the former.

Preferably, my system contemplates the control of inflow to the two radiators in response to the presence of steam at the common outlet of the radiators. This being the case, steam will be supplied to the radiators,

when both are used, at a relatively high pressure until steam is forced through one or both of the coils to the common out-let. If the obstructing device is properly designed with respect to the resistance of the auxiliary coil, the resistance in the primary due to the trapping of water of condensation will not be overcome until substantially the time when the auxiliary is filled with steam.

Preferably, and this is one-of the sub,- sid'iary objects of my invention, the obstructing loop is provided with a drip pipe,'of suitably smallerdiameter than the .loop which extends across the loop and which serves to carry off the water of condensation when 'steamhas been shut off from this coil so as to prevent, in suchcase. the trapping of water in the radiator; this drip pipe, however, being so small that it does not prevent the trapping of a part of the condensation under normal working conditions.

A further object of my invention is to provide a suitable steam heating system for ,railway sleeping cars and the like which will itake the place of the hot water systems which arein general use upon cars of this sortand which are objectionable because of the sluggishness of the medium and thedif ficulty of accurately controlling the same should be higher in the daytime than at night, for example v The invention has for further obj cots such rangements and devices in heating systems as will be hereinafter described and claimed.

The invention is illustrated in a preferred elnb'odlment'and in certain modifications 1n' to the protection of the water pipes. Fig.- 2 is a vertical section taken through apre ferred form of obstructing device. Fig. 3 is a similar view illustrating a preferred form of controlhn device. Fig. 4 a similar view sure clearnesss The car has the central or of a valve suitable for use in connection with the auxiliary coil. Fig.5 a sectional plan of the four-Way valve employed in connec tion withthe primary radiator. Fig. 6 a sectional view-taken on line 6-6. of Fi 5, looking in thedirection of the arrows. ig.

7 a diagrammatic view of a modified form of heating system, and Fig. '8 a similar view illustrating another modification.

Like characters of reference indicate like parts 'in' the several figures of the draw-= mgs.

Referring first to Figs. sents the flooring of the car, the center portion of which is broken away in order that the essential features of my invention may be shown on a sufficiently large scale to inseating ortion B provided with the usual seats in icated at B. At one end of the car is alavatory C provided with the two wash bowls C, C and the dental-bowl C Adjacent is-the toilet D with'the closet'D'. At the other side of the lavatory is the drawing room E having next toit the toilet room F'with the bowl F and closet F At the other end of the car "is the lavatory and, smoking room having the wash bowls G anddental bowl G toilet room H with the closet H. A hot water pipe I leads from a source of supply of hot water not shown) along the side of the car through the drawing room E, lavatory C and the rooms adjacent, and has branch pipes i leading to the several wash bowls. Similarly a cold water'pipe J leads from a source of supply of cold water along this side of the car and has the. several branch pipes 7' leading to the several bowls and closets. On the other side and at the other end the car are the corresponding 1. and 2, A repre- Adjacent is the hot water pipes I having branches z" and the cold water pipe J having'the branches j.

In Fig. 1 thepipes are shown diagrammatically outside otthe car. The pipes, both the water pipes andthe steam pipes, to

' be hereafterreferred to, are in practice'arother new and improved construct-ions, arv ranged along'fthe side of the car in the customary manner. It is notattempted to show all of the water piping in the car but arrangementof the water pipes and of the fixtures which they supply might, of course,

be employedwithout departure from my invention.

In "the car/shown, as is ordinarily the case, two separate systems ofradiating pipes are employed for heating opposite sides of the car. The arrangement of the various heating devices on the .slde of the car having the lavatory C and drawing room E will be first. described, and from this the arrange- .menton the other side of the car will be i eadily understood, the systems on opposite sides being in all .substantial respects the" same. In order to carryout all of the purposeslfbf nay-present invention, a primary radiator or coil of radiating pipes L is pro .vided which runs substantially the length of the car and is arranged adjacent to the water pipes I and J. It is the intention to keep this coil L under steam 'at all times when the .car requires artificial heating.

-The arrangement of the coil adjacent the water pipes serves to keep the'latter'from freezing. The heat from this coil will furthermore be suflicient, in connection with a similar primary coil on the opposite side of the car',.to keep the car warm in moderate winter weather and even 1n colder weather during the night hours.- This radiator is shown as provided with the loops L which lie adjacent, as shown, to certain of the branch water pipes. It will be understood, however,-that the representation in Fig. 1 of the radiator L ispurely diagrammatic. In practice, the construction of the coil will depend 'upon the, de-ign of the particular car on which it is used and other obvious considerations. To supplement this coil, one

or more auiriliar'y coils are provided which are used, ordinarily, only in cold weather and in the daytime, or at such other time as a greater amount of heat is required than can be supplied by the primary coil. In the installation shown. there are. two of these auxiliary coils M and M. The car isp'ro vided with the ordinary steam train pipe N which extends the length of thetram' and is ordinarily supplied with steam-at high but variable pressures'takenfrom the "locomotiv'e boiler. The radiators L and M are supplied from the train pipe N through 1,th'e common supply pipe n, n, n and contro ler,

. atmospheric pressure.

charge through a. common discharge pipe n}, n to the thermostat chamber of the controller O, as: will behereinafter described.

Preferably, a four-way. valve P is interposed in the. common supply and discharge pipes and the inletand outlet ends of the radiator M are preferably provided with the sepa rate shut-off and waste cocks Q, Q.

Supposing the radiator L to other less resistance to ther'fiow of steam therethrough than the radiator M, which may be forany of "the causes abovenoted, the former will be provided with a compensating device, one form ofwhich' is shown in detail in Fig. 2. .This device, which may be simply aportion of the coil, consists of a loop R, across which extends-the drip pipe 7', the latter being of such relatively small cross sectional area that itfcan not carry ofi the normal condensation of radiator L. As a result, a certain amount of water of condensation will collect int-he radiator L in advance in this loop, the loop being preferably arranged near the discharge end of the radiator. The water can only? be removed by a pressure of steam greater than Therefore when the radiator'M is opened up, supposing its resistance to be the same or less than that of theradiator L when provided with the loop,

steam will'just asv readily, or more readily,

as the case may be, flow through M as throughzL, the resistance due to the ac cummulation of water of condensation in L compensating for a greater resistance of the radiator M, due to its initial low temperature or' other causes. lVhen the steam is shut oil from the radiator L, as for example when the car is'cut off from the train, the drip passage 1" allows the escape of water of condensation. It is obvious that this compensating device might be employed in other heating systems than that shown in Fig. 1.

The auxiliary radiator M is shown as supplied independently from train pipe N through the supply pipe 91 and controller 0.

My invention contemplates a control of inflow to'the several radiators which is in response to the presence or absence of steam at the outlets of the same. A suitable form of controlling device 0, although other devices might be employed, isshown in Fig. 3. The device is of familiar construction and comprises a high pressure chamber 10 which receives steam from the train pipe N through the pipe 72, and a low pressure chamber 11, the port 12 between the chambers being closed by a valve 13 on a rod 14 connected with the bell crank 15 which is pivoted on the casing of the controller and is rocked by a rod 16. The latter extends through a discharge chamber 17 which. re-

ceives the discharge from the radiators L1 and'M, through the pipe n intoa thermos.

stat chamber 18 in which is a thermostat 19, the contraction and expansion of which causes the rod 16 to be raised and lowered, thereby closing and opening the port 12between chambers 10 and 11.

If valve 13 is open the steam passing through port 12 fronts; chamber 11 flows to the radiators L and;M, .15.

or the one of theseradiators which is open,';::' throughthe pipen', 71?. Thisflow of steanr t0 the radiators onto the one in use will take place untilsaid radiators or radiator shall have been filled'with steam, when'a further inflow of steam will. cause the expulsion of steam through the .discharge pipe into con-2.:

tact with thermostat 19 which, expanding, will close or throttle port 12. It will be seen that whenradiator L is used alone the steamwill be maintained therein at a pressure will prevent the outflow of steam to the thermostat until there has been a rise of pressure in the radiator sufiicient to force the water through the loop. In this way, when radiator M is opened up, therewill be a pressure at its inlet end which is in excess of atmospheric pressure and which will, of

course, hasten the circulation through this c011. The accumulation of water of consomewhat in excess of atmospheric'preSsure because, under ordinary'clrcumstances, the. ,accumulatlon of COI'ldBIlSHtlOII due toloop R v densation in radiator L does no 'harm because its heating-capacity is increased by the increase therein of steam pressure. ously, when both radiators are operated together, the one through which the circulation takes place the more rapidly will control the common inflow. Therefore no steam is wasted. l

The controller 0 of auxiliary radiator M may be of the construction shown in Fig:

3. Pipe niconnecting the controller 0 with" the train pipe may be provided with the or f supply and discharge pipes of radiators L and M, the purpose of which is'to maintain a clrculation of steam through the controller when neither of the radiators is under steam.

A suitable form of four-way valve is shown in F igs. 5 and 6. The casing of the valve is.

divided into four chambers 20, 21, 22 and a by the webs 24, 25, 26 and 27 which prox ide seats forthe valve piece consisting'ofthe) upper and lower disks ;.28 and 29 respecL-L tively, and the vertical web'30. The valve piece is provided with stem 31'; having the hand gri 32. Between the bonnet 33 and disk 28 is the chamber 34 in which isthe.

compression spring 35. In order to obtain valve piece, the disk 28 is preferably form with the perforation 36 so that steam is a mitted to chamber 34. Disk 29 is form'e with the perforation 37 which registers'w'ith 125, further seating pressure on the-top of the a perforation 38 in the bottom of the casing when the web 30 is in the full line position ofFig. '5. Supply pipe 12. leads to chamber 20; pipe 91 leads from chamber 21; dis- 5 charge pipe n leads to chamber 23; and

pipe n from chamber 22. lVith the web 30 m the full line position, steam from the low rom chamber 20 to chamber 22 and back to the thermostat chamber 18 of the controller.

In this position of the valve the radiators L and- M arev cut out. At the same time, the

perforation 37' comes into register with the rip ort 38, allowing radiator L to drain.

To a mit steam to radiator L, the valve piece is turned to the dotted line position.

, Any suitable form of'valve apparatus may be provided for opening and closing radiator l\/I. I have shown the inlet and discharge -20 ends of said. radiator as provided each with a stop and waste cock Q, the construction of Which is shown in Fig. 4. This valve has the port 39 adapted-to be closed by the valve piece 40, the uncontrolled port ll,-and a drip port 42 adapted to be closed by the valve 48.

The flow is from port 39 through the valve chamber 44.- to the port 41, in the case of the valve at the'inl'et end of the radiator, and in the reverse direction inthe case ofthe valve at the outlet end of the radiator; the drip port 42 in both instances being closed.'

and 43 are mounted so as to open and close in alternation, The valve 40 is provided with a stem 45 having the hand grip 85. 46, the stem being provided with the threaded portion 47 engaging threading in the bonnet'48. The valve 43 has the guiding stem 49 extending into a socket 50 in the cap piece 51, a compression spring 52 bearing against 40 the top of the valve. lVithin the valvechainher 44 is a lever 53 mounted on a pivot 54.,

the ends of the lever being forked at 55,

to engagewith collars 56 and 57 on, respectively, valves 40 and 43. By screwing down 45 valve stem 45', port 39 is closed and the drip port 42 opened.

. From the above description the operation of the heating system on the side of the car on which "the smoking room G and toilet 50 room- H are located will be apparent. In

the arrangement'shown for this side of the car, a' primary radiator S is provided and two" auxiliary radiators T and T. The radiator S has the loop R corresponding to loop R of the radiator L. The flow to and from, radiators T and Sis controlled by a four-wa valve P and thermostatic con troller of the construction shown. The auxiliary radiator T is provided with stop 60 andwaste cocks Q, Q. The circulation through, the radiator T is controlled by the thermostatic controller The steam may be shut off from this radiator by means of the ordinary shut-oif valve t.

- The subject matter above described was ressure chamber 11 of controller 0 passes Valves In Fig. 7 I have shown diagrammatically a modified form of heating system in which one of the two radiators, either of which may be used, is provided with aloop to trap water of condensation, the loop preventing any escape of steam from the radiator in which it is located until suificient steam pres-' sure hasbeen. accumulated to blow out the water seal.

The two radiators U and U from train pipe N through a common sup ply pipe n, n and discharged to the thermostat chamber of the controller- 0 through a common discharge pipe a Radiator U may be shut ofi by means of valveu and radiator U by means of valve u. In the return pipe 24 of radiator U is the loop V which collects water of condensation so that a certain amount of steam pressure. is necessary in the radiator U before steam can find exit through the pipe 16 In Fig; 8'I have shown another modification in which the flow is in opposite directions through .the twe ends of a single coil, the loop belng so placed as to compensate for the differences m-resistance lIl thetwo are supplied I ends ofthe coil resulting fromthe fact that one is shorter than the other. The coil W' is supplied from train pipe N by means of the supply pipe at, n in which is interposed the controller 0 in the manner described, the long end to of the coil discharges through pipe al to the thermostat chamber of the controlier and a loop Y connects the short end 'w of the coil W with its pipe n Preferably, a drip pipe 3 extends across the loop so that means is provided for draining 11: when steam has been shutoff.

As modifications in the form, construction, arrangement, design and proportion of the various elements composing the system of my invention, will readily suggest them selves to those skilled in the art of steam heating, I do not limit myself to the particulars shown and described, except as the same are made limitations on certain of the claims.

i I claim:

1. A heating system comprising, in, com bination, a source of supply of heatingfluid, two radiators in parallel with each other and adapted to be put into communication with the'source of supply of heating fluid, obstructing means in the .fluid conduit from one of the radiators comprising an open offset loop in said conduit extending upwardly from said conduit,.and a drip pipe which extends straight across said loop from substantially the point of-beginning of the loop of sufficiently smaller cross sectional area than said fluid conduit to restrict the'outfiow radiators having commonfeed and return pipes, 'sa'id return pipe being open to the feedpipe adapted to be atmosphere and the put Jntocommunication with said source of sup11ya...8ye0mmon controlling. device conin} accordance with thermostatic conditions n there'tum pipe, one of said radiators havinganiunrestrictedl"discharge intothe return e-so that the pressure therein is not sub-l stafitia'lly' above atmospheric pressure, and

means associated with the other of said radiators whereby steam is discharged from the same only at a atmospheric pressure."

A heating system, comprising a source of supply of heating fluid, two radiators arranged in parallehnadapted to be'putinto communication with said source of supply and having a common outlet, a controlling pressure greater thandevice comprising a thermostat at the outletof the radiators, means for excludin heating fluid from one of said radiators, sai radiator having an unrestricted discharge throu h said outlet, .and means associated with Elle other of saidradiators for sealing the outflow of steam from said radiatorex-. cept when said steamshall have reached a given pressure therein.

' 4. A heating system, comprising asourceof supply of'heating fluid, a feed pipe communicating therewith, tworadiators openingout of said feed pipe, a valve in the feed pipe intermediate said radiators, and means.

in one of said radiators for sealing the outlet of the same at pressures under a given pressure in the radiators, the other radiator having an unrestricted discharge, a common outlet for said radiators, a valve in the feed pipe and a controller for the said valve which is under the influence of thermostatic conditions in said common outlet.

5. A heating system, comprising a source of supply of heating fluid, two radiators, a common feed pipe for said radiators in communication with said source of supply, a common discharge pipe for said radiators, a valve inthe feed pipe, a controlling device to control said valve in accordance with thermostatic conditions in the discharge pipe,.'means for opening and closing the nletfand outlet to one of said radiators without interfering with the flow of the heating fluid through the other radiator and to the contrdller, said first mentioned radiator hav an unobstructed discharge into the comclosets and basins and their cormecting pipes? v i ommon ing inflowof fluid tothe feed pipe conditions in the common a system of water supplypipes,

.insaid'car; a set of radiating.pipes'extend-- mg m proximity to said closets and basins,-

of radiating pipes,-a' common discharge pipe for the same, said second set of radiating: p pes arrangedso as to receivesteam from the. supply pipe only when the first set of pipes .i's vunder steam, a valve to control a second set of radiating pipes adjacent said first mentioned set, a source ofsiipply of 'steam,. a comm'on supply, pipe vfor said sets the circulation through the second "set. of'

pipes, a:.single automatiecontrojller toicontrol the flow of steam through said 1 common supply pipe in accordance withthermostat-ic discharge pipe, and an-ofl set loop in the first mentioned 1st of radiatingwpipes adjacent its outlet which,

retards theliow from saidset of pipes without prevent ng the same.

..7. The combination with a railway car, of

coil arranged to protect said water pipes agalnst freez ng, a second heating coil arranged in parallelwith said first named coil.

a source of supply of heating medium with which said coils are adapted'to be put into communication, and. means for. shutting off the medium from said second mentioned coil, said coils'heing arranged so t-hat-said first-named coil may be independently supplied with the heatingmedium, but I said second-named coil can be supplied with the heating medium only when said first-named coil is so supplied.

8. The combination with a railway carprovided with a' seating section and with a toilet section, of a system of Water pipes in said toilet section, a heating coil arranged to heatgboth of said sections so as to protect said water pipes from freezing, 'a second heating coil arranged in parallel with said first-named coil. a source of supply ofheating medium with which said coils are adapted to be put into communication andmeans for shutting off the medium from said sec ond mentioned coil, said coils being arranged so that said first-named coil may-be independently so supplied, but said secondnamed coil can receive a supply of heating.

medium only when said first-namedcoil is. also so supplied. V

9.3The combination with a sleeping car provided with an open section in the body of the car and with inclosed sections site ends of the car, said inclosed sections bea heating at 'o poing provided with systems of water pipes,

of a heating coi-l arranged toheat the body of the. car and to protect said water. pipes against freezing. a supplemental coil ar-' ranged toprovide additional radiation 'for the open sect-ion of the car, said coils being ai'rangcd inparallel asource of supplyof heating medium with which said coils are adapted to be put into communication, and means for shutting off the medium from said second named coil, said coils'being arranged so that said first named coil may be independently supplied with the heating medium'butsaid second named coil can be sup plied-with the heating medium only when said first named coil'is so supplied.

-10. In a heating system, the combination with the apartment to be heated, of a source of supply of steam, tworad-iators which are connected together in parallel adapted to be put in communication with said source of. supply, and located in said apartment so that one supplements the other in heating the same and open to the atmosphere at their discharge ends, one of said radiators being constructed so as to offer less resistance than" the other to the flow of steam therethrough, a 1d an obstructingudevice for said radiator of less resistance, comprisingia discharge pipe having a loop to trap water of condensation extending upwardly from said pipe, and al-drippipe which extends across the'loop from one side to the other, but is of sufliciently smaller diameter than the loop, so as not to destroy the trap under normal operating conditions.

11. In a heating system, the combination with the apartment to'be heated, of a source of supply of steam, tu 'oradiators located in said a'partmel'it so that one supplements the other in heating the same, a common feed pipe for said radiators communicating with" sald source of supply, a common discharge, pipe for the same,a valve which controls the flow of steam through the feed pipe, a thermostat in the common outlet which, controls said valve, one .of said radiators offering less resistance than the other to the How of steam therethrough and the other having unobstructed discharge to the common discharge pipe, and means connected with said radiator of less resistance for trapping the water of condensation so as to obstructthe flow of steam from said radiator to the common outlet. f

12. A heating system comprising in combination a source of supply of heating fluid, a radiator connected therewith, comprising a pipe having a substantially U-shaped bend, said bend extending upwardly from the por-. tions of said pipe on either side of the same. and adrip pipe of smaller cross sectional area than said first mentioned pipe and bend extending straight across said bend from substantially its point of beginning. substantially as and for the purpose described.

13. The combination with a railway car, of a train pipe carrying a supply of steam a. system of water pipes in said car, a heating coil which receives steam from said train pipe-arranged to protect said water pipes against freezing, a second heating coil arranged adjacent to said first-mentioned coil and in parallel therewith, means for shutting,

. of train 011: steam from the second mentioned coil,

said coils being arranged so that said first mentioned coil may be independently supplied with the steam but the second-named coil ,can be supplied therewith only when said first-mentioned coil so supplied; and

means near the outlet of said first mentioned coil providing a water seal for the pur-, pose described. t l

14. The combination with a railway car,

ipe carrying a'supply of steam, a system of water pipes'vin said car, aheating coil which receives steam from said train pipe arranged to protect said waterpipes against freezing, a second heating coil arranged adjacent to said first-mentioned coil and in parallel therewith, means for shutting off steam from the second mentioned coil, said coils being arranged so that said firstmcntioned coil may be independently supplied with the steam, but the second-named coil can be supplied therewith only when said first-mentioned coil is so suppliedg-said first-mentioned coil being formed near its outlet with a substantially .U-shaped bend; I

which extends above said portion of said:

coil. and a drip pipe which extends straight across said bend from substantially the point of beginning thereof, which is of relatively small dian'ieter in comparison with the size of the bend for thepurpose specified.

15. The combination with a railway car.

of a train pipe carrying a supply of steam,

a system of water pipes 1n said car, a heating coil which receives steam from said train pipe arranged to protect said water pipes against freezing, a second heating coil arranged adjacent to said first-mentioned coil and, in parallel therewith, means for shutting 0H steam from the second mentioned coil. said coils being arranged so that said firstmentioned coil may be independently supplied with the steam. but the second-named.

coil can be supplied therewith only when said first-mentioned coil is so supplied; means near the outlet of said first-mentioned coil providing a water seal for the purpose described. said .coils h ring a common discharge pipe, and a controlling device to control the flow of steam to said first-mentioned coil comprising athe-rmostat in communication' w'ith'said discharge pipe.

, 1.6. The combination with a railway car of, asteam train pipe, a feed pipe communieating therewith, radiating means compris-;

mg a primary radiator which communicates with said feed pipe and is adapted to re ceive steam whenever said heating system is in'operation, and a secondary radiator arranged adjacent thereto and so that it may or ,may not receive steam from said feed pipe,

as desired, but can receive steam only when steam is supplied to the primary radiator; a

,common outlet pipe with which said radiators v are in communication; controlling means 'comprismg a valve in said feed pipe and a thermostatic device located so as to bep nnder the influence of the medium in said outlet pipe and means for compelling the flow of steam through bothof said 1a- 5 diators when the secondary radiator is open.

- 17. The combination with a railway car of a heating system therefor embracing a steam "tram pipe, a feed pipe leadlng from said trai'n pipe, radiating means comprising a primary coil and a secondary coil adjacent thereto, both of said cells being adapted to be put. into communication with said feed pipe and arranged so that the primary 'coil receives steam whenever said system is .coil is open and means for controllil'lg the flow of steam from the train pipe to the feed pipe comprising a valvein the feed pipe and a thermostatic device located so' as to be underthe influence of the medium passing "from the discharge pipe and arranged to actuate said valve.

- 18. The combination with a railway carnot a'system of water pipes, and" a heating system for said car embracing a steam'tram Ctlrrection in Letters Patent No. 987 566,

pipe, a feed pipe communicating therewith,

a primary radiating coil which communicafes with said feed pipe and lies adjacent to said system of water pipes so as to keep the same from freezing, said primary racorrection therein that oaice;

[Sean] diating coil being adapted to receive steam at all times when said heatingsystem is in operation, a secondaryradiating coi adjacent. to said primary radiating coil and arranged so that it may or-may not receive steam from'said feed pipe, as desired, but can receiye steam only when steam is supplied tothe primary radiating coil; and means for compelling the flow of steam through both of said radiating coils when the secondary coilis open. v

19. The combination with arailway car, of a heating system therefor embracing a source of-supply of steam and radiating means adapted to receive steam therefrom comprising two radiators, one adapted to extend through the car lengthwise thereof and the other. arranged adjacent to the first nainedradi'ator but extending through only a portion of the distance through'which the first radiator extends, a common supply pipe and a common discharge pipe for said radiators, and means comprising a thermostat located so as to be actuated by the con' dition of the medium in the common discharge pipe for determining the flow through said common supply pipe, said radiators being arranged and controlled so that the steam may be circulated through the first radiator alone, or may be compelled to circulate through both of the same when both are open, but cannot/be circulated through EGBERT H. GOLD,

the second alone.

\Vitnesses P. H. TRUMAN, E. L. BREIDERT.

It is hereby certified that inLetters Patent No. 987 ,566, granted March 21, 1911, upon the application of Egbert H. Gold, of Chicago, Illinois, for an improvement Steam-Heating Systems for Sleeping-Cars, an error appears in the printed specification requiring correction as follows Page 1, line 65, the word ovecome should read overcome and that the said Letters Patent should be read with this the same may conform to the record otthe case in the Patent Signed and sealed this 11th day of 'April, A. D., 1911.

'o. o. BI'LLINGS', I

Acting Commissioner of Patents.

and a thermostatic device located so as to bep nnder the influence of the medium in said outlet pipe and means for compelling the flow of steam through bothof said 1a- 5 diators when the secondary radiator is open.

- 17. The combination with a railway car of a heating system therefor embracing a steam "tram pipe, a feed pipe leadlng from said trai'n pipe, radiating means comprising a primary coil and a secondary coil adjacent thereto, both of said cells being adapted to be put. into communication with said feed pipe and arranged so that the primary 'coil receives steam whenever said system is .coil is open and means for controllil'lg the flow of steam from the train pipe to the feed pipe comprising a valvein the feed pipe and a thermostatic device located so' as to be underthe influence of the medium passing "from the discharge pipe and arranged to actuate said valve.

- 18. The combination with a railway carnot a'system of water pipes, and" a heating system for said car embracing a steam'tram Ctlrrection in Letters Patent No. 987 566,

pipe, a feed pipe communicating therewith,

a primary radiating coil which communicafes with said feed pipe and lies adjacent to said system of water pipes so as to keep the same from freezing, said primary racorrection therein that oaice;

[Sean] diating coil being adapted to receive steam at all times when said heatingsystem is in operation, a secondaryradiating coi adjacent. to said primary radiating coil and arranged so that it may or-may not receive steam from'said feed pipe, as desired, but can receiye steam only when steam is supplied tothe primary radiating coil; and means for compelling the flow of steam through both of said radiating coils when the secondary coilis open. v

19. The combination with arailway car, of a heating system therefor embracing a source of-supply of steam and radiating means adapted to receive steam therefrom comprising two radiators, one adapted to extend through the car lengthwise thereof and the other. arranged adjacent to the first nainedradi'ator but extending through only a portion of the distance through'which the first radiator extends, a common supply pipe and a common discharge pipe for said radiators, and means comprising a thermostat located so as to be actuated by the con' dition of the medium in the common discharge pipe for determining the flow through said common supply pipe, said radiators being arranged and controlled so that the steam may be circulated through the first radiator alone, or may be compelled to circulate through both of the same when both are open, but cannot/be circulated through EGBERT H. GOLD,

the second alone.

\Vitnesses P. H. TRUMAN, E. L. BREIDERT.

It is hereby certified that inLetters Patent No. 987 ,566, granted March 21, 1911, upon the application of Egbert H. Gold, of Chicago, Illinois, for an improvement Steam-Heating Systems for Sleeping-Cars, an error appears in the printed specification requiring correction as follows Page 1, line 65, the word ovecome should read overcome and that the said Letters Patent should be read with this the same may conform to the record otthe case in the Patent Signed and sealed this 11th day of 'April, A. D., 1911.

'o. o. BI'LLINGS', I

Acting Commissioner of Patents.

Cdrrection in Letters Patent No. 987,566.

It is hereby certified that in Letters Patent No. 987,566, granted March 21, 1911, upon the application of Egbert H. Gold, of Chicago, Illinois, for an improvement in Steam-Heating Systemsfor Sleeping-Cars, an error appears in the printed specification requiring correction as follows: Page 1, line 65, the word oveoome shoiild read overcome; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 11th day of April, A. D., 1911.

C. C. BILLINGS,

[SEAL] Acting Commissioner of' Pdtents.

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