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Publication numberUS766873 A
Publication typeGrant
Publication dateAug 9, 1904
Filing dateMar 28, 1904
Priority dateMar 28, 1904
Publication numberUS 766873 A, US 766873A, US-A-766873, US766873 A, US766873A
InventorsJames F Casey
Original AssigneeCasey & Hedges Mfg Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 766873 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

PATENTED AUG. 9, 1904.





PATENTBD AUG. 9, 1904.



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PATENTED AUG. 9, 1904.




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UNITED STATES Patented August 9, 1904.




SPECIFICATION forming part of Letters Patent No. 766,873, dated August 9, 194.

Application iled March 28, 1904. Serial N0. 200,263. (No model.)

To all whom t nifty con/cern:

Be it known that I, J AMES F. CASEY, a citizen of the United States, residing at Chattanooga, in the county ofHaniilton and State of Tennessee, have invented certain new and useful Improvements in Steann-Boilers, of which the following is a specification.

My invention relates to steam-boilers, and especially to the boilersetting and furnace, including the construction and arrangement of same.

The object of the invention is to greatly simplify the construction, increase the efficiency, provide a construction which will easily permit repairs to the boiler' or furnace, and to provide external means for adjusting either the boiler or setting' when out of alinement.

A further object is to provide a structure in which either a single or several boilers may be independently employed and to provide a structure suitable for any stationary setting. i

A further object is to provide a furnace suitable for using to advantage such fuel as sawdust, bagasse, &c., and one in which all the gases will be consumed at the most advantageous point and the furnace thus rendered practically smokeless.

With the above primary and other incidental objects in view the invention consists of the devices, constructions, and parts or their equivalents hereinafter described, and set forth in the claims.

In the drawings, Figure l is a longitudinal sectional View on the line .fr a' of Fig. 2. Eig. 2 is a transverse sectional View on the line 1/ 1/ of Fig. l. Fig. 3 View on the line e of Fig. l. Fig. A shows details of adjustable casing support or jack. Fig. 5 is a side View of a portion of the furnace-jacket'. Fig. 6 is a detail of construction of said jacket.

Like parts are represented by similar reference characters in the several views. V

In the drawings, a a represent the boilers, which are of the ordinary tubular type. y is the casing surroundingl the lower portion of is a transverse sectional said boilers, and c is the furnace, which is of a Dutch-oven style. The furnace c is located forward of and entirely below the boiler a. In cross-section the upper half of the oven'is sernicircular, the interior forming the arc of a true circle, and the throat e is inclined upwardly to the bridge-wall e7. The furnace is constructed of brick or masonry c', having a lining c:l of iire-briek and a jacket c3 of steel. This steel jacket, as illustrated in Figs. 5 and 6, is constructed in sections by riveting along either edge of a sheet of steel an angle-iron c", and when placed in position over the masonry the adjacent angle-irons are connected by bolts c5, as shown. By this construction any particular section may be removed for the purpose of making repairs to the masonry without disturbing other sections or the necessity of tearing down the entire structure. In addition to the regular furnace-doors there is in the top of the furnace a Stoke-hole, which is especially serviceable when using sawdust or bagasse as fuel. On the top of the furnace at c, Fig. l, and in solid and dotted lines, Fig. 2, is shown a pan on which the supply of damp sawdust or bagasse may be partially dried before .its introduction to the furnace.

The boilers a are suspended from the transverse beams a, which in turn are supported on the upright columns (t2. rI`he proper alinement of the boilers is secured through the suspension bolts a3. Arranged about the lower portion of said boilers and eccentric therewith is a lire-brick casing forming a ccmbustioirchainber for the gases, inclosed in a steel jacket The casing L extends from a point in the rear of the boilers a to the bridgewall c7 of the furnace. It will be noted that the intersection vof said casing with the bridge-wall c7 is somewhat below the top of the latter. The object of thus depressing the casing is to allow suiiicient space within said casing and below the boilers to permit .the entrance, in case of necessity, of a boilermaker to make repairs.

The steel jacket 2) of the casing is secured to the upright columns a2, thus forming a rigid structure, and preventingI any tendency justable standards in the nature of jacks. I u n l These standards, as shown 1n Fig. 4, consist of a base 3 having a screw-threaded opening therein to receive the end of a rod which is screw-threaded at either end with a right and left thread, respectively, said rod being provided with a lock-nut and at the upper end engages a head provided with inclined jaws bl, which rigidly engage an angle-iron bs, riveted to the steel jacket By the adjustment of these standards the alinement of the casing b is readily secured.

To prevent any bulging of the casing and to correct any bagging the cross-tie rods e are provided. These cross-ties are provided with adjusting-nuts and engage at either end with angle-clips b9, which are connected to the steel casing b', thus connecting at the top the two sides of the casing In the bottom of the casing near the rear end is an opening L, covered by a door, the purpose of this being to facilitate the removal of the ashes which may accumulate in the combustion-chamber behind the bridge-wall and between the casing and boiler. By dropping this door the operator working through the opening Z112 in the back of the casing with a scraper can thoroughly clean the combustion-chamber.

It will be noted that thus far the description has related to one boiler and one furnace; but it is to be understood that this construction can be used singly or in a battery of any desired number.

lilhen used in series, there is constructed between each of the boilers and furnaces a dividing-wall, (indicated by d and cl, respectively.) rIhe object of this construction is to permit the use of any one of a series of boilers independent of all the others. As will be noted especially in Fig. 3, the dividing-wall Z is constructed entirely within the steel jacket and is supported by a lintel-plate (Z3, resting on columns (Z2. The lintel-plate Z3 is preferably channel-shaped, as shown in Fig. 3, and extends the length of the boilers, (see Fig. 2,) and to it is riveted the jacket of the casing b.

The arched top of the furnace-oven causes the rays of intense heat to converge toward the center of the oven, where they dry and to a certain extent coke the fresh fuel, hasten combustion, and set free the gases. The heatrays are directed upward through the throat and striking the round bottom of the boiler diverge to either side. The free gases are also carried upward and, being entirely consumed in their passage through the throat.

and casing b, thus add greatly to the heating efciency and render the furnace practically smokeless.

It will be further noted that the superheated products of combustion are conducted through the combustion-chamber in contact with the outside of the boiler-shell to the rear end thereof, from which place they return through the boiler-tubes to the front end of the boiler, the attachment to the stack being made at the point f.

Having thus described my invention, I claiml. In a construction as described, the cornbination with a boiler and afurnace` of a casing arranged eccentric with said boiler, a steel jacket for said casing, and adjustable means connected with said jacket for securing the alinement of said casing.

2. The combination with a boiler, of a furnace located belowv and infront of said'boiler, said furnace having a steel sectional jacket, an arched oven, an inclined throat' terminating at a point in proximity to the front end of said boiler, and a combustion-chamber extending throughout the length and partly around said boiler, the bottom of said chamber being in a lower plane than thefterrnination of said inclined throat, substantially asV specified.`

3. In a construction as described, thecornbination with a furnace and a boiler 'having a surrounding casing,

head -piece connected with said supported member, and a'screw-threaded connection between said foot-block and said head-piece, substantially as specified.

t. In a constructiony asdescribed, the'conibination with the furnace and boiler, ofacasing for said boiler, supports for'said casing, a jacket surrounding said casing, and adjustable tie-rods for alining said casing.

5. In a'construction as described, the combination with a furnace and. boiler, of a casing for said boiler, supports for said casing, a jacket for said casing extending to they top thereof, and horizontal tie-rods for surrounding said casing, substantially as specified.

6. In a construction as described, a. plurality of boilers, a casing for each of said boilers forming an independent combustion-chamber, a plurality of furnaces, an arched oven and an inclined throat in each of said. furnaces, each of said inclined throats connecting with one of said combustion-chambers, a' single jacket formed of a plurality of detachable sections for said furnaces, a single jacket for all of said boiler-casings, adjustable tie-rods passing overl said boilers and engaging the sides of said jacket, and a pluralityof adjustable vertical supports for said casing-jacket,`

substantially as specified.

7 In a construction as described, thecombination of a plurality of boilers, a casing partially surrounding' each of said boilers, dividing-walls between each of saidboilers, asinof adfustablel supports for said casing consisting of a` foot-block; a



gie jacket inclosingl all of said casings and dividing-walls, a lintel-plate immediately under and su pporting each of said dividing-Walls, and one 01 more columns supporting' each of said lintel-plates, substantially as specified.

8. rJhe combination with a plurality of boilers having interposed dividing-Walls, of alintel-plate supportingl each of said dividing;- Walls, and a plurality of columns supporting each of said lintel-plates, substantially as specified.

9. In a construction as described, a plurality of furnaces, a plurality of boilers, and a dividing-Wall between each of said furnaces and each of said boilers,l a casing for each of said boilers and a single jacket surroundingl said casings, upright columns supporting said easing's and boilers, a series of tie-rods connecting the sides of said jacket, and means for ing-columns for supporting` said casing` at the sides thereof, and a yseries of adjustable tierods extending' from the sides of said jacket, for the purpose specilied.

In testimony WhereoiI I have hereunto set my hand this 22d day of March, A. D. 1904:.

JAMES F. CASEY. Witnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4702534 *Sep 16, 1985Oct 27, 1987Witt Henry CWinged display case
Cooperative ClassificationF27D1/021