US171951A - Improvement in spark-arresters for locomotives - Google Patents

Description

W,W. PIPER. I SPARK ARRESTEILS FoaLocoMoTIvlEs. Y No. 171,951. r Patented Jan. 11., 1876.

l NPETERS. PHBTO-LITKOGRAPHER. WASWHQION. D Cz found in practice most convenient.

UNITED STATES PATENT OEEICEn WILLIAM W. PIPER., OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN SPARK-ARRESTERS FOR LOCMQTIVES.

Specification forming part of Letters Patent No. 171,951. dated January 11, 1.876; application filed October 13, 1875.

To all whom 'it 'may concern:

Be it known that I, WILLIAM W. PIPER, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Smoke-Stacks Designed for Use on Locomotives.

My invention will he readily understood from the following description, taken in connection with the accompanying drawing, wherein- Figure 1 represents an outside view or elevation of my improved smoke-stack; Fig. 2, a vertical and central section of the same; Fig. 3, a transverse section of the lower part of the stack, taken ou the line x fr.

"Externally this smoke-stack may be constructed in any ofthe well-known forms, but in order to grind, break up, and disintegrate the large cinders, sparks, or bits of coal, prior to their exit from'the stack, I construct the cylindrical part orl portion of the stack ot' two unequal-sized barrels, A B, the one placed within the other, and so arranged as to leave a space, c, between the two. Perpendicularly within the smaller cylinder B is a long cone, D, of perforated sheet metal, its base united, by means of rivets @,sto and near vthe bottom of said cylinder. Y Above, andin a reverse position, or so that its apex will rest upon that of the lower cone, is placed another cone, E, constructed wholly of wire-gauze netting, its base terminating in the upper inside edge of the dome F on top of the stack, and is secured in that position by means of short bolts, transverse rivets, or by any other means This construction of smoke-stack is such that any cinders, large sparks, or bits of coal will in their Hight from the flues of the boiler rst pass into the long upright cone D, and through the numerous long narrow slits or openings a a a made therein, and from thence through the meshes of the upper Wire-gauze cone E, and out at the top of the stack; butin the event of very large sparks or bits of coal, and such as are liable to carry fire, that have passed easily-through the openings a of the lower cone D, their outward flight will be ar rested by the neness of the wire-gauze netting or upper cone E, when they will fall back into the annular space c between the cylinders A B; passing through appropriate' holes h h around and near the bottom of the stack, will again enter the lower upright cone, 'and thus, by the upward draft `and escaping steam,

be forced once more through its narrow slitsV or openings, which operation will be repeated until they are reduced to that condition as will enable them, divested of their fire', to readily and easily pass through the meshes of the wire-gauze cone, and from thence be carried away with the smoke by the action of the atmosphere, the whole contrivance operating in the manner of a straightshoot chimney.

l claim- Y 1. The upright perforated cone D and inverted wire-gauze cone E, in combination with the barrel of a locomotive smoke-stack.

2. The upright perforated cone D and inverted wire-gauze cone E, in combination with theinside cylinder B, as and for the purposes set forth. i

3. The annular space U and holes h near its bottom, in combination with the upright perforated cone D, as and for the purposes set forth.

WM. W. PIPER. Witnesses:

JosIAH W. ELLs, ROBERT S. SILL.

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