US268098A - Willabd t - Google Patents

Description

(NoModeL) W. T. HATCH.

I STEAM BOILER FURNAGB.

Patented Nov. 28, 1882.

UNITE STATES PATENT OFFICE.

WILLARD T. HATCH, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE ATLAS ENGINE WORKS, OF SAME PLACE.

STEAM-BOILER FURNACE.

SPECIFICATION forming part of Letters Patent No. 268,098, dated November 28, 1882.

Application filed October 5. 1881. (No model.)

To all whom it may concern Be it known that I, WILLARD T. HATCH, of Indianapolis, in the county of Marion,in the State of Indiana, have invented certain new and useful Improvements relating to Steam- Boiler Furnaces, of which the following is a specification.

I employ a casing of iron attached to the boiler and lined with fire-brick or analogous 1o non-conductingrefractory material. The boiler,

with my furnace attached, may be moved without injury to the furnace or connections. I term a boiler thus provided semi-portable. I make for the lining fire-bricks having semicylindrical grooves along two of their edges. These bricks are laid with their grooved edges abutting against each other, thereby providing a cylindrical channel extendingalon g the joints between the lines of bricks. In this channel I insert an iron rod.

The ends of the rod receive nuts,which, being screwed up on suitable washers with gentle force, can hold the brickwork strongly together in one direction. The presence of the rod in the grooves along the edges holdsthe bricks in position facewis'e.

The following is a description of what I consider the best means of carrying out the invention.

Theaccompanyingdrawingsformapartofthis 3o specification. Figures 1,2, 3, and 4 are isometrical views. Fig. 1 represents one of the bricks detached. Fig. 2 represents the front portion of a boiler having my furnace attached, a portion being broken away to better show its con- 5 struction. Fig. 3 is a corresponding view, showing a different arrangement of the bricks and of the rods. Fig.4 represents a modified form of one of the bricks. Fig. 5 is a vertical section through a portion corresponding to 40 Fig. 2.

their edges riveted, welded, or otherwisestrongly and reliably joined. The casing B extends down perpendicularly from one side of the boiler. It describes a curve of small radius at A its junction with the bottom B, then extends across horizontally, and, describing another similar curve on the opposite side, extends upward vertically to the other side of the boiler.

It is strongly connected to the boiler by riveting or otherwise. Great firmness and stiffness are secured to the shell B byits being attached rigidly to the bottom 13 and to the boiler A.

A connected structure is thereby formed which possesses the advantages of compactness, firmness, stiffness, solidity, and integrity, and the hereinafter-described lining will be more securely held.

On the interior, near the bottom, are riveted or otherwise attached longitudinal shelves 0, one on each side. On these shelves are sup- 7o ported fire-bricks M, which extend up to a line near the junction of the casing B with the boiler A. These bricks are locked together by rods D, which lie in grooves m in the edges of the bricks, as shown in Figs. 2 and 3. The figures differ in the arrangement of the bricks and rods. All the bricks are formed with the grooves extending along the narrowest edges or ends. In Fig. 2 the walls are built with the greatest length of the bricks extending 8o horizontally,an dconsequentlywiththegrooved edges or ends extending up and down. The iron rods D in these grooves stand vertically. In Fig. 3 the bricks are laid with their greatest length up and down, and consequently with their grooved edges extending horizontally. In this figure the iron rods D, being in these grooves,run horizontally.

D D are nuts fitting on the threaded ends of the rods D. There may be washersone for go each rod, or, better, a strip of iron punched at the proper intervals to press against the bricks,

being held thereto by the nuts D.

I give a slight preference to the arrangement shown in Fig. 2, but believe either plan 5 will successfully carry out the invention. The bricks shown in Figs. 1, 2, and 3 are solid, but there is a considerable recess, M, in one of the extended sides or faces. This recess is presented outward and forms an air-space be Ioo tween the main. bodies of the bricks and the metal casing B. This space serves to intercept the transmission of heat. Fig. 4 shows a form of brickin which acavity extends through the center of the brick, which performs the function in an acceptable manner. In the form shown in Fig. 3 the back ends of the rods D may have a nut similar to that shown at the front end. In the form shown in Fig. 2 the upper end of each rod D is bent outward at right angles. This allows a firm hold of the upper tier of bricks or of a plate of metal applied thereon. Both ends of the rods may be correspondingly bent, or both ends may have nuts in either position. The ends of the horizontal rods in Fig. 3 take hold strongly of the ordinary iron front casing and of a corresponding casing extending across the back of the furnace. The vertical rods in Fig. 2 extend down to the shelf 0. The rods not only aid each brick to support itself in place by its neighbors and combine the whole together, but also may support the whole wall by the engagement of their ends with strongly-supported parts.

My furnace may support the boiler or the boiler may support the furnace, according to circumstances. Each may be supported independently, if desired but the construction affords great facilities for moving the boiler and furnace bodily without the parts becoming disconnected. I have in my experiments mounted the boiler and the furnace together on a rigid frame of cast-iron, which latter is moved by any suitable means, carrying the boiler and furnace with it.

The shelf 0 should be at or below the level of the grate, so as to allow the fire-brick to extend completely past the hottest portion. The space below is available for the induction of air and for the storage of ashes and the like. This space also increases the facility for raking out ashes and clinker from the bottom of the furnace.

The casing may extend around underneath the grates the entire length of the boiler or any part of it, or it may stop on each side at the lower supporting-shelf for lining, leaving the bottom open below. This form may be used when the boiler is to be kept in one position foralongtime over a suitably-arranged pit for the continued deposit of soot and ashes.

The bottom and sides B B of the shell being formed integral or rigidly united, and the top of the shell being riveted to the boiler, a very strong structure is obtained, and the inclosed lining M will not be subjected to any strains or twists.

Modifications may be made in many of the ecsmes bricks of half the regular width, and, by arranging themjudiciously, can cause the bricks to break joints one way-that is to say, the

joints where the rods D are inserted-must be extend through the casing B or through the shelf 0. On the other hand, the bent ends at the top in Figs. 2 and 5 may extend through the casing and have nuts, if desired. Where the extra trouble and expense will be warranted, the horizontal joints in Fig. 2 and the vertical joints in Fig. 3 may be tongued and grooved together at the same time that the other joints-that is to say, the "ertical in Fig. 2 and the horizontal in Fig. 3-are keyed or doweled by the iron rods D.

I claim as my invention- 1. The fire-bricks M, each having achamber, M, extending over its main portion, and grooved ends at m, in combination with locking-rods D, furnace-shell B, and boiler A, as herein specified.

2. In combination with the boiler A, furnaceshell B, and fire-bricks M, having grooved ends, substantially as indicated by m, a series of metal rods, D, arranged to perform the double functions of doweling the bricks to v guard against lateral displacement and tying them together in the plane of the wall,as herein specified.

3. In combination with a boiler, a metallic shell riveted thereto, having sides B and bottom B, and a lining of fire-brick or analogous refractory material,the shelf 0, adapted to support the lining and leave a wider space below for the ash-pit, as herein specified.

4. The boiler A, furnace-shell B, refractory lining M, composed of separate bricks or sections havingbroad air-chambers Mand grooves on, metal rods D, nuts D, and shelves 0, combined and arranged forjoint operation as herein specified.

In testimony whereofI have hereunto set my hand, at Indianapolis, Indiana, this 27th day of September, 1S8l,in the presence of two subscribing witnesses.

WILLARD T. HATCH.

Witnesses:

Is. McDowELL, CHAS. B. THOMPSON.

ICC

Images