US975897A - Boiler. - Google Patents

Description

W. F. SELLERS & C. J.- DAVIDSON BOILER.

APPLICATION FILED 1111111.15, 1907.

Patented Nov. 15, 1910.

5 SHEETS-SHEET 1.

W: F. SELLERS L C. J. DAVIDSON.

BOILBR.

APPLIoATIoN FILED 1111111.15. 1907.

Patented Nov. 15, 1910.

I 5 SHEETS-SHEET 2.

W. P. SELLERS a G. J. DAVIDSON.

BOILER.

APPLICATION FILED MAR.15. 1907. y

Patented Nov. 15, 1910.

5 SHEETS-SHEET 3.

www I :ggg/MM W. F. SELLERS & C. J. DAVIDSON.

BOILER.

APPLIGATION FILED 1111111.15. 1907.

Patented Nov. 15, 1910.

5 SHEETS-SHEET 4.

W. P. SELLERS & C. J. DAVIDSON.`

Bantam APPLICATION FILED MAB..15, 1907- Patented Nov. 15, 1910.

5 SHEETS-SHEET 5.

WiL/1W Iran srnrt@ PAT T WILLIAM. r. SELLERS, or WILMINGTON, DELAWARE, AND CHARLES J. DAVIDSON, or

MILWAUKEE, WISCONSIN, ASSIGNORS MOOIE.,l DELAWARE, A CORPORATION O TO EDGE MOOR IRON COMPANY, OF EDGE- F DELAWARE.

i BoILER.

Specification-of Letters Patent. Patented Nov. 15, 1910.. `Applmation mea Maren 15, 1907. 'serial No. 362,451.

To all 'whom 'it may concern: y, 4 y I Be it known that we,:WiLLIAM F. SEL- LERs, a citizen vof the United States of Amer` ica, residing in Wilmington, castle, J. DAVIDSON, a citizen of the United States of America, residing in Milwaukee, county of Milwaukee, and State of 'Wisconsin, have invented a-certain new and useful `Improvement in Boilers, of which the lfollowing is a true and exact descriptiomreference being had to the accompanying drawings, which form a part thereof.

This mvention relates to steam` venerating case boilers and is particularly designed for use withlthe box-header ty 'ev of watertube boilers, though the invention in all of its aspects is not limited to such use.-

The object of the vinvention is to im rove the mechanical construction of -the oiler county of New- 4 and its setting andl toso arrangethe parts that the durability of the boiler will be prolonged and an increased eiicien'cy and reliabrillity of operation will b e obtained.

h characterize our invention are pointedout with articularity in the claims annexed to and orminga art of 'this specification. For a better un tion, however, and the advantages possessed by it, reference may be had to the accom# panying drawings and descriptive matter 1n which we have illustrated and described forms in which our-invention may be embodied. f

Of the drawings Figure 1 is a side elevation of a boiler with the. outside heat insulatingV covering shown in dotted lines. Fig. 2 is a perspective view of a portion of a tube and the -tiling or brick in which it is totally embedded. Fig. 3 is a viewsimilar to Fig. 2 showing a construction in which the tube is only partially embedded in the tiling. Fig; 4 is a sectional elevation of the boiler, taken on the line '4 4 of Fig. 5. Fig. 5 is a sectional elevation on `the line 5-5 of Fig. 4.

Fig. 6 is a. sectional elevation on the line 6 6 of Fig. 4. Fig. 7 is a sectional plan showing a portion of the side wall of thc boiler housing. Fig. 8 is a sectional elevation showing a portion of the front header and one of lts supportingcolumns. Fig. 9

1s sectional elevation on the line 9L-9- of Fig. 8. 10 is a sectionalelevation illus- A and State of Delaware, and CHARLES.-

e various features of novelty which erstanding of our inven `Fig. 14 is a partial trating the details of therear header support employed in the modified construction shownin Figs. 12 and 13. Fi 11 is a sectional elevatlon taken on the 'line 11-11 of Fig. 13. Fig. 12`is a partial plan view of an arrangement for supporting the rear header an differing from the construction shown in Figs. 1 to 9 inclusive. Fig. 13 is a rear elevation of the construction shown in Fig. 12. velevation showing a. modified form of connectionof the front header to the water legs. Fi 15 is a sectional elevation taken on the Fine 15-'15 of Fig. 14. Fi 16 is a partialtransverse section of the boiler containing the modification of Fig. 14, taken about midway between the two headers.. Fig. 17 is a rear elevation of the rear header showingl a third arrangement of supporting the rear header and connectin it to the water legs. Fig. 1 8 is a side e evation of the construction shown in Fig. 17. In the form of our invention shown in Figs. 1 to 9, the boiler proper consists of a front box-like header A and a rear box-like header B, which are connected at their lower ends by the usual set of inclined water tubes C and at their u per ends by the usual horizontal steam an water drum or large tube C1.V The front header A to which the upper 'ends of the. tubes C are connected is supp ported by two hollow columns or water legs .which engage the under ed header at column D e of the opposite sides of the boi er. Each 1s placed 1n communication with andmechanically connected to the header A by a nipple D1.v The rear header B is supported by two hollow columns or water legs E located one at each Side of the boiler. As shown, bearing plates B1 are located between the'header B `and theA upper ends of the columns E, to permit the sliding movement between the header B andy the connecting it to the rear columns or legs,-

water columns E resulting from the expansion and contraction ofthe boiler parts as their temperatures vary. umns E are connected at their lower'ends by a mud drum F, having a blow-.out aperture F1. The drum F is in communication with the header B through fiexible curved conduit-s or tubes F2. The columns D and E at eachside of the boiler are connected to each other by a set of inclined tubes G which The water colare in the same vertical plane with, and are parallel vto the corresponding outside row of tubes C. It will, 'of course, be understood that the front header of the boiler may be movably supported by the water columns and the rear header rigidly supported instead of asl -in the arrangement just described.

The usual abutment or wall H forms the rear wall of the fire box and supports the rear ends of the grate bars H1, the front ends of which are supported by the front wall I .of the boiler. The usual diaphraofms or bailles .l are provided to cause the flame to circulate in the manner indicated by the large arrows in Fig. 4.

The side walls of the furnace are lined by blocks of heat resisting tile'or brick K. As shown in Figs. formed that the outer halves ofthe outer row of tubes C and the portions of the tubes G at the rear ofthe wall H are partially embedded in the tiling, while the portions of the tubes G at the side of the fire box areven.-

tirely embedded in the tiling.

The tiling is held in place against the tubes C and G by an outer frame-work consisting of vertical metalbars L, each of which in the form shown has a portion or rib L1 extending transversely to the side of the furnace, andhaving its inner edge bearing against the outer surface of the tiling, and cross bars L, L4 and L5. From the `outer edge of each rib L1 extend flanges or ribs L2, which are parallel to the side of the furnace. Pads M of suit-able heat insulating material are preferably inserted between the aan heat insulating material.

and the adjacentv edge of the rib L1. In tie form shown the upper cross bars LS and L" are riveted at their ends to the headers A and B and the lower cross bars L5 are anchored in any suitable manner to the boiler structure 01,', foundation. Between each adjacent pair of ribs L1 and betweenthe tiling'and the flanges L2 are removably inserted a series of blocks N of a These blocks may consist of layers N1 of an asbestos composition having air cells N2 formed in them. Preferably a'n a'r space O is formed between the tiling'and the blocks N. The blocks and the tiling may be spaced apart to form the air space O, by t e spacers O1 which may be 1n the form of lugs formed boiler as a whole may jacket or coating of a heat insulating plaster either on the tiling or on the blocks. The be covered by a or compound P. It will be understood that the boiler is connected at its rear end to a source of cold water in any suitable manner (not shown in the drawings).

W ith the construction described the circulation through the tubes G is as follows:

Relatively cold water enters the drum F r from the header B through the tubes F.

5 and 6, the tiles K are so From the drum F water passes into the col umns E, and from them through the tubes G and water columns'D into the header' A. The circulation of the water through the tubes G not only increases the capacity of the boiler by increasing the effective heatin surface, but also prolongs the life of the tiling by withdrawing heat from it as well as directly from the llame. The water columns and tubes ser-ve, therefore, not only as an effective sup ort fdr the boiler setting, but also as an'e cient feed water heater, while at the same time they-make the boiler more durable. l j

The boiler housing described is simple and relatively cheap to'construct', possesses good` mechanical and heat insulating properties, and may be repaired w1thcomparat1ve ease.

Instead of supporting the rear header of theboiler from the rear legs E, we may support the header from the foundation work, as illustrated in Figs.- 10 to 13, inclusive, in

which the rear header is provided with a' saddle lB2 having bars B3 secured to it to form a seat for a rocker B4 the lower end of which is seated ina support B5, secured. to a -pier Hl at the rear end of the boiler. As shown the rocker B4 is in the form of a bar having its upper and lower edges rounded. This construction is one found to be highly satisfactory in taking care of the movement of the rear header, due to the expansion and contraction of the boiler parts, as the temperature of the boiler changes. l

In the form of ourinvention shownin Figs. 10 to 13, inclusive, each of the. two rear legs E is connected to the header by a flexible connection F3 made -up of jointed piping. In this form the drum has been dispensed with and- F* represents the connection for a blow-olf cock. The water is supplied to the boiler either directly to the rear header B or through the water legs E, in any suitable manner (not shown in the drawing I -nder some conditions we fin-Et it desirable to make the 4fire box wider than the boiler roper. One means of accomplish-ing this is illustrated by the constructlon shown in Figs. 14 to 18, where the tubes Gr and front and rear water legs D and E, at one side of the boiler are not 1n the same plane with the outer row of tubes C but are at one side of said lane. With this construction the front legsl are connectedto the header A by means of horizontallyl extendin hollow trunnions or nipples A1, Vhaving anges A2 securedl to the header, which trunnions or nipples extend laterally into the legs D through-openin s formed to receive them.

V The rear hea er may be 'supported in the manner illustrated in Figs. 17 and 18,

where each leg E is provided with a pintle or trunnion Ff and the header B is provided with a snnilar pintle or trunnion E4. A

losy

rocker plate E2 connects each pair of bosses, being providedA with a lower aperture receiving the pintle E3, and an upper aperture receivinofA the pintle E4. In this form of our inventlon the legs E are connected to the header` by thel jointed piping F3, as in the construction shown in Figs. 10 to 13, and, of course, the rocker construction illustrated best in Fig.`10, which arrangement we regard as the preferable form of support for the rear header, may be employed with the laterally displaced legs E of Fig. 17, in-l stead of the pintles E3 and E4 and the rockers E2. v

Where the tubes G are spread apart the single vertical tile retaining parts L of the construction shown in Figs. 1 to 9, inclusive, are replaced by upper bars LG at the sides of the tubes C and lower bars L7 at the sides of the tubes G. The lower ends of the bars L6 are connected to a cross bar L9 and the upper ends of the bars L7 are connected to a cross bar L1". Short horizontal bars L8 connect the cross bars L9 and L10. i

While the forms of our invention disclosed have been found in actual practice to be very satisfactory, it will be readily understood by those skilled in the art that changes may be made in the form of our invention without departing from its spirit.

Certain novel features in the construction and arrangement of the furnace housing disclosed but not claimed herein are claimed in my copending application, Serial No. 488,834, filed April S), 1909, as a division of this application.

Having now described' our invention, what we claim as new and desire to secure by Letters Patent is,

1. In a boiler, a pair of box headers, tubes connecting them, a pair of hollow columns adjacent each header, tubes connecting each column with a column for the other header and connections between each header and the adjacent column, the connections between one header and the adjacent columns being amitie. l

2. In a boiler, a pair of box headers, tubes connecting said headers, a pair of hollow columns extending downwardly from each header'and arrangedone at each end of the header, nipples connecting one header with the, adjacent columns, flexible piping connecting the other header and the corresponding columns, and tubes at the side of the fire box connecting each column adjacent one header with the corresponding column adjacent the other header.

3. In a boiler, a pairof headers. a 'set of inclined tubes connecting them, hollow columns arranged two at each side of the boiler, one at each end of `each header, said columns extending from the headers to the floor level, other inclined tubes connecting said columns,,provisions for obtaining a watercirculation through said columns and the tubes connecting them, a furnace lining consisting of tile, in Iwhich theside tubes of said set of tubes and said other tubes are embedded. the tubes adjacent the-fire box being entirely embedded in said tiling and the remaining portions of the ltubes having inner surface portions exposed.

4. In a boiler, a pair of headers, a set of inclined tubes connecting them, hollow columns arranged two at each side of the boiler, one at each rend of each header, said columns extending from the headers to the floor level, other inclined tubes connecting said columns, provisions for obtaining a water circulation through said columns andthe tubes connecting them, afurnace lining consisting of tile, in which the side tubes of said set of tubes and said other tubes are embedded, the tubes adjacent the fire box being entirely embedded in said tiling and the remaining portions of the tubes having inner surface portions exposed, and ametal bar framework for holding said ltiling against said tubes.

5. In a boiler, a pair of headers, inclined tubes connecting them, hollow columns at the sides of the boiler, one extending down- -wardly from each end of each header, in-

clined tubes connecting said columns, provisions for obtaining a water circulation' through said columns and the tubes connecting them, a. furnace lining consisting of tile,

in which the tubes at the side of the tire box are wholly embedded and in which the retaining framework for said tiling, comprising metal bars, is located and heat insulating blocks slidingly received between each pair of adjacent bars.

6. In a boiler, a pair of headers, inclined tubes connecting them, hollow columns at the sides of the boilers, one extending downwardly from each end of each header, inclined tubes connecting said columns, provisions for obtaining a Water circulation through said columns and the tubes connecting them, a. furnace linin 'consisting of tile, in which the tubes at t e side of the tire box are wholly embedded and in which the remaining portion of the tubes are partially embedded, a retaining framework Lfor said tiling, comprising vertical bars, heat insulating blocks slidin ly received between each pair of adjacent gars, and means for spacing` said blocks away from said tiling.

7. In a boiler, a pair of headers, inclined tubes connecting them, hollow columns at the sides of the boiler, one extending downwardly from each end of each header, inclined tubes connecting said columns, a furnace lining consisting of tile, in which the tubes at the side of the fire box are wholly embedded and in which the remaining portion of the tubes are partially embedded, a retaining framework for said tiling, comprising vertical bars, heat insulating blocks slidingly-received between each pair of adjacent bars, and means for spacing said blocks away from said tiling.

8. In a boiler, a pair of box headers, tubes connecting said headers, a pair of hollow columns extending downwardly from each header and arranged one at eac end of the header, nipples connecting one header with the adjacent columns, flexible piping connectin the other header and the corresponding co umns, and tubes at the side ofthe fire box connecting each column adjacent one header with the corresponding column adv15 jacent the other header, the columns at opl posite sides ofthe boiler-being spaced apart so that the tubes connecting the columns'are separated by a distance greater than the dls- 'tance between the opposite side tubes conf necting the headers. v l

WILLIAM F. SELLERS.- CHARLES J. DAVDSON.

Witnesses to the signature of William F` Sellers: y

ARNOLD KATZ,

STEWART. Witnesses to the signature of: Davidson:

M. S. RAUsoH, GEO. F. KELLY.

Charles J.

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