US471869A - Edwin a - Google Patents

Description

(No Model.)

B. A. LELAND. v STEAM HEATER. FOR RAILWAY GAR HEATING APPARATUS.

No. 471,869. Patented Mar; 29,1 92,

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UNrr-nn STATE-S2 PATENT QFEICE.

EDWIN A. LELAND, OF BROOKLYN, NEWV YORK, ASSIGNOR TO CHARLES M. PRATT, OF SAME PLACE.

STEAM-HEATHER FOR RAlLWAY-CAR-HEA'l'llNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 471,869, dated March 29, 1892. Application filed January 15,1891. Serial No. 377,912. (No model.) menaa'innngana September 3,1891, Net 15,166.

To all whom, it may concern.-

Be it known that I, EDWIN A. LELAND, a citizen of theUnited States, residing at Brookprovements in that class or type of car-heating apparatus shown in the United States Let- I ters Patent granted me upon the th day of November, 1890, N o.441,497, and the purpose thereof is'to securea largely increasedheating-surface forthe watertraversing the'h eater;

, to simplify and improve the construction of the latter; to providefor the speedy and ready attachment and detachment of the steam outlet and inletpipes from the end or cap of the heater and fromthe interior steam-head, and

to so construct and organize the several parts that the live steam frornwhich the'water derives its heat shall be supplied to a series of annular steam chambers or spaces, which not i only inclose Water-passages but are surrounded by a water space or spaces, whereby a small body of steam may be distributed over a very considerable surface and impart heat to water-contacting surfaces having more than double the area of heating-surface afforded by heaters having water-pipes in the drum surrounded by steam.

To these ends myinvention consists in the several novel features of construction and new combinations of parts hereinafter fully set forth, and then more particularly pointed out and defined in the claims following this specification.

To enable others skilled in the art to make and use my said invention, I will proceed to describe the same in detail, reference being had to the accompanying drawings, in which Figure 1 is acentral vertical section of a steam-heating apparatus embodying my inventionfand Fig. 2 is a horizontal section of Fig. 1 on the line :1: 00.

In the said drawings, the reference-numeral 1 designates the cylindrical casing or jacket of the heater, having its lower end closed by a p he an tern l hre e flange which receives the end of the jacket, the latter being provided with a male thread. The upper end of the cylindrical body is likewise closedlbya cap 3, secured-in a similar manner. Through the center ofthecap 2 is tapped a pipe 1, throughwhich the cold water or the water which has beenpart-ly deprived of its heat is admitted t0 the heater, and through the upper cap 3, is inserted in a similar manner a pipe 5, through whichthe water which has traversed the heater finds exit. This outlet-pipe is usually connected to any suitable 1 form of enpansion tank ;or chamber (not shown in the drawings) andthence to the circulation-pipe or radiators in the interior of the car.

Tapped into the lower cap 2, upon opposite sides of the inlet-pipe 4, are two separate pipes '70 6 and 7, the formerbeingconnected with the train-pipe in any suitable manner, in order that live steam may be supplied thereto.

The pipes 6 and 7 have communication with short tubularpieces 8 and 9, having right and left hand malethreads upon their opposite ends, respectively, one end of each being in-, serted in the threaded openings in the cap 2 and I screwed in upon the interior of said cap, which is thickened to provide threaded 8o openings ofsufficient lengthto receive these tubular piecesaswell as the pipes 6 and 7. Upon the inwardly-projecting ends of said pieces are turned couplingslO, having right and left hand female threads in each, and to these couplings are connected'tubular pieces 12 and 13, each having one end screwed into one of the couplings 10. Into the tubular opening in the piece 12 is inserted athin copper tubing 14, having its end brazed or simio larly fastened in said tubular piece, above which the tube projects for some distance, its upper open end, as shown in the drawings, passing the center of the cylindrical casing or body of the heater. Into the tubular piece 13 is inserted in a similar manner a tube 15 of the same length as the tube 1 1 and brazed within the piece 13. The length of these tubes may be subject to variation, but I prefer using the proportions substantially as shown in the drawings.

The reference-numeral 16 denotes a steamthread being out upon the outer-surface'of' said flange. Upon the other disk is formed '10 a like flange 18, the outer surface of which is flush with the edge of'said disk, while its inner surface is provided with a female thread adapted to receive the male thread on the flange 17. When thus attached, a rchamber 15 19 willbe formed between-the said disks, as

shown in Fig. 1. In the upper of the two disks isformed a series of circularopenings which-receive=thecndsof pipes 20, "bra'zedor *otherwise fastened in place within-said 'open- 20 ings. Inthe'lowe-r disk and concentricwith *saidopenings are formed a series of openings which are less in diameter thanthose in the other disk and receive 1 the'ends of pipes 21,

M hich pass upward within the" pipes 20. In

2 5 one of the'openingsin the lowerfidisk, which is threadedfor' that purpose, is screwed-the end of- 'th'e tubularpiece 12;the pi'pesl i extending upwardconcentrically 1 within the pipe 20 above and in-'an'open'ing in the samedisk,'diao metrically I opposite,o1" substantially so, is i n- "serted in the end of ?-the tubular 'piece'13 its pipe "15-; which isprovidedwitlrpe'rforations at close intervals, extending upward in one "of the tubes 20. The steam-head 16israised 3 5* some little idistanceabove thelower end of the ='heater.

= In=or*n ea'r the upperend'of' the 'heateris a second stean'rhead22, constructed,inthe manner already described, of two-flanged disks 4o incl-osing a chamber 28,- the pipes 20 of great -est diameter penetrating the lower'disk'only,

while the smaller concentric: pipes '21 pass through the supper disk. It will be seen from i-t his constructionlathat the series *of pipes' 2O 5 have free communication with the two *chambel's -19 and 23' in -the loweranduppersteam- -heads; respectively, while 1 the pipes 2ltraverseb'oth these chambers,aswell as thesurrounding pipes 20;and1 communicate with the 5o spaceinclosed by-thec'ylindrica-l body l'gand "caps 2'and 3.

i steam is I now introduced through the steanr-i nlet' pipe 6, it will now inthe 'directionsindicated by-the arrows in Fig. 1; fil1ing 55 *thejannular-spaces 24 between thepipes 20 and '21,"while thewaterentering by the inlet- =pipe ew illinotonly-flow through the pipes21,

butypassing through the annular spaces '25 between the edge of *the steam-head 16 and 6o the 'innerface oflthegcylindrical body 1-, will surround the -largerpipes 20, thereby givinga series 'of-double Water-contacting surfaces, one ofsaid surfacesbeing the interior facesof the pipes 21 and the'other the exteog rior facesbf the pipes 20. -Moreover', the I *steani'beingconfined to thefan'n'ular spaces 24:, these surfaces are heated with a-comparativelysmall-body of live steam. v

' Bythis construction I not only avoid the use of an interior steam-drum, but I obtain an economy of steam, and in virtue of the largely-increased heating-surface contained -within :the body portioul, I-obtain a much more rapid heating of the water and a more speedy circulation of the same.

What I claim is- 11 In a steam-h eater for rail'way-car-heating apparatus, the combination of an outer cylindrical drum closed at its ends and having a water-inletzat oneend and a water-outlet atthe otherend, steam-heads arranged within said drum and each having a steam-chamber, a steam-inlet pipe and a steam outlet pipe, both extended "between", the said. steamheads-onjopposite sidesoftheidrunrcenter 'b'ersinvisaid heads; a steamd'nle't' tube,of less diam eterthan the steam-inlet pipe,;passing adj acent steam head, and steam chamber therein-,: and: extended" into the'steanI-inlet pipe, a steam-outlet tube having perforations and similarly arranged in the steam=outlet pipe, a series of pipes :of'ilargeldiameter havin g their; ends communicating with the steam- -chambersinithe steam-heads, and a seriesof smaller 'pip'es' concentrically:arranged in the communicating with theends of .the spa'ce inclosed by the drum, substantially as de scribed.

2; ha steam-h eater for railway-car-heating apparatus, the combination, with a'drum 1, having closedrends or caps 2" and 3,0f a waterinlet 4 and a water-outlet 5,1ocatedt in the lower and upper ends of. the drum, respectively, a steam-inlet pipe 6 anda steam' 'o'utlet pipe 7," entering the cap 2,"right and left hand threaded pipe-sections 8 andp9,-con- =-nected by unions-1O to the threaded ends 12 and 1301? "the steam inlet'andzoutlet pipes, a steam-head 16,1nounted on and supportedby thetpipes 12 and. Band having a .steamchamber 19, pipes 2'0,vcommunicati ng with the steam-chamber 19, a steam inlettube 14 and steam-outlet tube 15, thelatte'r having'perforations,said tu bespassing through the steamhead 16 'into two of the pipes 20 :on opposite sides'of' the center of thesteam-headr, asteamhead 22,-having a'chamber 23, with which the -upper-ends of pipes 2O communi'cateyand' a series of water-conducting pipes121,"arranged within the steam+pipes 20, theirendspassing through both steam-heads and the steamchambers therein, anannularsteamj space 24 being provided between thepipes 20*and 21 and the water being free "to passarou-nd the steam-heads and 001116111 contact with the pipes" 20 and to pass through thepipes'21, substantially as described.

' 3. In a steam-heater for railway-car-heating and commu'ni'catingtwith the steam chamsaidlarger pipes;'their endspassingthrotigh the steam-heads and 'ste'am c'hambers and apparatus, the combination, with an inclosing jacket or body portion having a Water inlet and outlet in its respective ends, of steamheads, each composed of two separable flanged disks, steam-pipes arranged between said steam-heads and having communication with the steam-chambers therein, concentric water-conductin g pipes traversing said steam pipes and chambers and passing entirely through the steam-heads, and a steam inlet and outlet, the steam-heads being arranged

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