US1320082A - Planodraph co - Google Patents

Description

. C. E. MILLER.

ARCH BRICK. APPLICATIONFILED APR-14, 1919.

1,320,082. Patenmd 001;. 28, 1919.

UNITED s A Es PATENT oEEIcE.

CHARLES E. MILLE or CHICAGO, I'Lmnois, Assrenon TO UNIvEnsAL ARCH COMPANY, OF CHICAGO, ILLINOIS, AconroRATIoN OF ILLINOIS.

ARCH-BRICK.

To all whom it may concern:

Be it known that I, CHARLES E. MILLE a. citizen of the United States, and resident of Chicago, in the county of Cook and'Stat'e of Illinois, have invented certain new and useful Improvements in. Arch-Brick, of which the following is a specification. I

My invention relates to walls or baflies for furnaces and particularly to a novel brick construction adapted for use in a vertical baflie wall primarily intended for use in locomotives. a 1

One of the objects of my invention is to provide a brick construction adapted to in-' terlock with a duplicate brick in order to forma wall the elements of which are inter locked against lateral separation. The desired result is secured by constructing bricks of generally T-shape in plan view, the abutting edges of adjacent bricks being 'di-agonally disposed with relation'to the transverse axis of the wall, the taper of the sides of the brick at both the small andthe largeends being in the same direction, that is, thesides of the small end of the brick converge toward the body and the sides of the large end converge toward a point away from the body. In walls of the character under consideration a series of'air ducts are provided, these ducts in the present case being constituted by metal tubes rigidly held at their upper and lower extremities and serving to assist in retaining the bricks in place. The bricks are of duplicate construction and when alternate bricks are turned 180 and placed in end-to-end relation a tubeis accommodated in the space at the ends of the mating bricks and they are securely held in place against movement in onedirection by the interlocking effect and in another direction by engagement with a tube.

The invention will be more readily under stood by reference to the accompanying drawings, wherein:

Figure l is a horizontal sectional view of a wall constructed in accordance with my invention, the bricks composing the wall being I shown in plan view.

Fig. 2 is a vertical sectional'view on the line 2-2 of Fig. 1; and V Fig. 3 is a sectional view through one of the bricks.

It will be understood that a wall such as contemplated by me is intended for use in locomotives and is known as the Gaines type.

Specification of Letters Patent.

Patented Oct. 28, 1919.

Application filed ,Apri1"14, 1319. Serial No.289,955

In this construction air is admitted through the bottom of the fire box and delivered by means of tubes or passages to the furnace at a point above the fuel bed. In view of the tremendous strain and wear to which such walls are subjected it has been found difiicult to maintain them for any considerable length of time. By reason of my arrangement the bricks composing thewall have greater stability and cannot readily become displaced. I

i The wall iscomposed of a plurality of whole bricks 10- and half bricks 11,a number being employed suflicient to bridge the space between the side sheets9 of the boiler. Air is supplied to the fire box by means of tubes 12 ,or similar passage ways, the tubes being bent at right angles at their upper ends as shown in Fig. 2, in order to discharge the air at a. point abovethe fuelbed andan chored in a top course of bricks. The bricks composing the wall serve a double purpose 'ofproviding abaflle and protecting the air supplying tubes. To that end the bricks are formed of generally T-shape in plan view, the construction being such that when two duplicate bricks are placed end to end a space 13 is left for a tube 12. The engaging surfaces of both the small and large ends of the brick are tapered, the taper 1a of the small end corresponding to the taper 15 of the large end. The inclines are such that when the bricks are associated as shown in Fig.1, and the ends are held as by abutment against the side sheet of the boiler, the bricks cannot be moved laterally but are interlocked and can only be separated by movement vertically. This result is secured by tapering both the small and the large ends of the brick and by cooperation with the tubes 12. Because of the tapered ends alternate bricks are prevented from movement in opposite directions away from each other. They are prevented from movement in the opposite directions by contact first with the tubes, and, secondin the absence of the tubes with the large end of the mating bricks. It is understood, of course, that it is necessary in order to secure the effect described, to firmly hold the end bricks in order that the bricks may not separate longitudinally of the wall- A p The end bricks 11 are usually formed with fiat ends in order to properly cooperate with the side sheet, the end adapted to cooperate may be varied somewhat Without departure from the spirit or my inventlon and I do with a full size brick being the same as that heretofore described. The bricks will preferably be lightened by providing recesses 16 in one surface'thereot' and this practice will also be followed in the half bricks 11, in which case a half recess 17 will be formed.

Obviouslythe exact form of the bricks not wish to be limited except as indicated bythe appended claims.

I claim:

'1. In a vertical wall construction for fire boxes, the combination of a plurality of bricks adapted to be placed in end to end relation and to provide a vertical passage at their junction, said bricks being generally T-shaped in plan view, the abutting surfaces of adjacent bricks being angularly disposed with relation to the transverse axis of the wall, and adjacent bricks being positioned to overlap and interlock, and means for retaining thebricks against longitudinal separation, substantially as described.

2. A vertical baflie-wall brick of T-shape in plan view, the side edges of the head being adapted to cooperate with the side edges of the foot of a duplicate brick in order to hold the bricks against lateral separation in one direction, both the head and foot being wedge-shaped in plan view, a plurality of said bricks being adapted to be associated in end to end relation and to .be held in interlockedposition, substantially as described.

3. A vertical bafiie-wall-brick of T-shape in plan View, the sides between the head and foot being recessed to provide for a duct, the head and foot portions being wedge-shaped in plan View, the sides of the foot portion converging toward the head and the sides of the head having the same inclination, a plurality of said bricks being adapted to be as sociated in end to end relation and to be held in interlocked position, substantially as described. V

4. In a vertical bafiie-wall, the combination of bricks of T-shape in plan view, providing a vertical passage at the junction of adjacent bricks, and a tube in said passage, the two ends of said bricks being wedgeshaped in plan view, mating bricks being interlocked against lateral movement in one direction by reason of said wedge-shaped ends and held against movement in the opposite direction by engagement with said tube, substantially as described.

Signed at Chicago, this 11th day of April, 1919.

CHARLES E. MILLER.

WVitness T. D. BUTLER.

Copies of this patent may be obtained for. five cents each, by addressing the Commissioner of Patents,

Washington, D. C. i

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