US426845A - Railway-car heater - Google Patents

Description

(No Model.)

wfiwss 6,5

I I r J- P. lflcflii LRO'lf-v RAILWAY GAR HEATER.

Patented Apr. 29. 1890.

UNITED STATES PATENT OFFICE.

JAMES F. MOELROY, OF ALBANY, NEYV YORK, ASSIGNOR TO TIIE CONSOLI- DATED CAR HEATING COMPANY, OF IVIIEELING, VEST VIRGINIA.

RAI LWAY-CAR H EATER.

SPECIFICATION forming part of Letters Patent No. 426,845, dated April 29, 1890.

Application file d September 24:, 1889. Serial No. 324,913. (No model.)

To all whom it may concern.- circular flange of suitable depth to fit on the Be it known that I, JAMES F. MCELROY, a interior of the shell to and provided with citizen of the United States, residing at Alsuitable rivet-holes, whereby it may be rivbany, in the county of Albany and State of eted thereto, and with an aperture m at or New York, have invented certain new and near the center thereof. On the inside this useful Improvements in Railway-Car Heaters, flange is provided with a hollow abutment n, of which the following is a specification, refhaving a screw-threaded aperture 0 at one erence being had therein. to the accompanyside. The aperture m is also screw-threaded. drawings- This casting thus constructed forms an elbow to This invention relates to new and useful having a flange whereby it may be secured 6o improvements in railway-car heating;and the upon the shell. The aperture m coincides invention consists in the peculiar construcwith a similar aperture through the shell a tion and arrangement of parts more fully at the top, in which is secured the steam-inhereinafter described and claimed. let pipe K, controlled by a suitable valve K 5 In the drawings which accoinpanythis speoiand connecting with any source of steam- 6'5 fication, Figure 1 is a vertical central section supply. The aperture connects witlrthe upthrough my improved heater. Fig. 2 is a secper end of the steam-coil. The lower end of tion thereof on line X X. Fig. 3 is a vertical the steam-coil connects into the aperture 0 central section through the top of the wateron the elbow J, and the aperture m connects .zo chamber and the cast flange. Fig. 4 is a perwith the pipe L, which is carried to any conspective view of the cast flange. venient point wherein the water of condensa- A is the base of the stove. tion from the steam is desired to be discharged. B 1s the grate, secured in the ring C. M is the ingoing pipe from the hot-water- D is an annular water-jacket, consisting of circulating apparatus, which is connected into 2 5 the outer shell a and the inner shell I). The the bottom of the water-chamber through an 7 5 outer shell is provided with a shoulder c and apertured screw-threaded flange N.

a flange c, and the inner shell is provided at O is the outgoing pipe, which is connected the bottom with a shoulder (Z and a flange d. at the top of the water-chamber through a The shoulders c and dare of suitable length, similar flange bolted to the outer shell a.

0 so as to form a hearing at the bottom between The parts being thus constructed and arthe flange d and the outer shell and at the ranged, they are intended to operate as fol top between the flange c and the inner shell. lows: The stove being set up in connection E isatop of any desired construction, pref- .with the system of hot--water-circulating erably that shown in the drawings, and it is pipes and the expansion-drum, (not shown,)

3 5 provided with a central aperture 6 for a and a suitable quantity being filled therein, smoke-passage arranged in line with the walls in case a fire is built in the stove the heat of the combustion-chamber F. This top is impinging against the inner shell of the waprovided wit-h a suitable flange f, which rests ter-chamber will cause a circulation of the upon the extension q of the inner shell I), and water from the bottom to the top thereof, the

40 with suitable flanges h to receive the dome 1', water entering through the pipe M thereof which surrounds the smoke-stack, as is usual and finding exit through the pipe 0. NVhen the in these constructions. The lower side of the fire is out and steam is admitted through the top is provided with a suit-able flange j, and valve K into the steam-coil, which is surthe ring 0 is provided at the top with suitrounded by the water of circulation in the 45 able flanges k, to which is bolted the casing G. water-chamber, the steam will enter at the 5 II is a steam-coil arranged in the watertop of the steam-coil and circulate through chamber and connecting at its top into a cast the same to the bottom of the water-chamber, elbow I and at its bottom into a cast elbow where it will find exit through the pipe L. J of similar construction. These elbows are By this construction it is evident that the 50 of the following construction: Zis asegmental water, in order to find exit through the pipe 0, will need to pass the entire length of the Water-chamber, thereby coming into contact with all the steam-coils before it can escape upward, and also that the hottest water is brought into contact with the hottest stcanr pipe at the top and the coldest water into contact with the coldest steam, or the steam of the lowest pressure, whereby the steam is more rapidly condensed. By this construction the greatest amountoii' benefitis obtained from the steam, the pipe L carrying ol't' merely the Water of condensation instead, as in other devices of this cl1aracter,'oit discharging a large amount of steam with the water of condensation.

My water-; 'aohet forms at once the lining for the combustion-ohamber, the water-j acket, and the support for the top, and also allows of connecting directlyinto the Water-chamber all the necessary connecting-pipes without danger of damage thereto.

\Vhat I claim as my invention is.

1. In a Water-heater, a untenjachet complete in itself and forming the casing for the comlmstion-ehamber, a steam-coil in said water-ehamber and connected at top and bottom therewith by means of flanged elbows J, and flanged nipples at the top and bottom of the said Water-chamber for the ingoing and out going water (:OHHOCIIOH, the parts being arranged to operate substantially as and for the purpose described.

2. In a n atenheater, L \\'Lt6l'-jt0k0lj surrounding the combustion-cliamber, a steamcoil in said water-j acket,connectiug at top and bottom with the flanged elbows J, the elbows I having segmental circular flanges I, and screw-threaded apertures 0 and 0, substantially as described.

In testimony whereof I ailix my signature, in presence 01: two witnesses, this 31st day of August, 1889.

JAMES F. MCELROY. lVitnesses:

EDWIN A. SMITH, 'IJIOS. U. MURRAY.

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