US119928A - Improvement in spark-arresters for locomotives - Google Patents

Description

BENJAMIN GARVIN.

improvement in Spark Arr-esters for Locomotives.

No. 119,928. Pmnredom. man

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t the plate being equal, or nearly so.

UNITED STATES IPATENT QFFICE..

` BENJAMIN GARVIN, OF OSHKOSH, ASSIGNOB OF OND-HALF HIS RIGHT TO HENRY HULL, OF FOND DU LAO, WISOON SIN.

IMPROVEMENT IN SPARK-ARRESTERS FOR LOCOVIVIOTIVES.

Specification forming part of Letters Patent No. 119,928, dated October 17, 1871.

To all whom zt may concern:

Be it known that l, BENJAMIN GARvIN, of

Oshkosh, in the county-of VViunebago and State of Visconsiu, have invented a new and Improved Spark-Arrester for Locomotives 5 and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing forming part of this speciiication, in which- Figure 1 is a vertical central section of a locomotive smoke-stack, showing the application of' my improvements. Fig. 2 is a transverse section of the same taken in the plane of the line a' x, Fig. 1.

Similar letters of reference in the accompanying drawing indicate corresponding parts.

My invention has for its object to provide a spark-arrester for locomotives which shall be more economical in construction and eicient in operation than those now Vin use; and to this end the invention consists in an improved lconstruction of the same, as hereinafter set forth.

In the accompanying drawing, A is the smokestack of a locomotive-engine mounted upon the bridge-plate in the usual manner. B is the smoke-pipe, placed concentrically within the stack, extending upward from the bridge-plate about one-half or two-thirds the length of the stack, and is held in place near its lower end by the band C, which is supported from the stack by short bars or rods D. The lower end of this pipe receives the ends of the exhaust-pipes in the usual manner. E is the truncated conical detlector, supported from the end of the smokepipe about on a line with the top ofthe stack by means of the rods F and nuts G.

The parts thus far described are in common use in nearly all locomotives, and do not, in themselves, constitute my invention, but form the basis of its application, as I will now proceed to describe.

H is a diaphragm placed midway of the stack and provided with a central opening to receive the end of the smoke-pipe B, which lits therein with close contact; or the smoke-pipe may terminate immediately under the plate, if preferred, the diameter of the pipe and of the opening in circular opening the diaphragm is inclined down- From thev ward to the stack to form a shallow receptacle for the accumulation of sparks. I is an annular plate secured to the outer edge or the conical deilector and extending` inward toward the apex of the same to form a chamber, J, as shown in Fig. l. This chamber communicates with the stack below the diaphragm by means of short tubes or divin g-flues K, which are secured to the annular plate around suitable openings formed therein, and extend downward through the diaphragin.

The operation is as follows: lVhen the engine is in motion and exhausting through the pipe B, the sparks from the lire-box are carried upward through said pipe, by the force f the exhaust, until they come in contact with the deflector, by which they are directed` into the chamber J. From this chamber they descend, in the form of cinders, through the iiues K, into the stack below the diaphragm H and upon the outside of the smoke-pipe, lodging around the base of the latter, from which they may be removed through a door placed at the base of the stack. Those sparks Vwhich are still alive,77 or containing fire, as they reach the lower end of the smoke-pipe, Vare drawn up again, bythe exhaust, through the openings L at the base of the said pipe and again carried down through the fines below the diaphragm.

Owing to the circuitous course of the sparks, they are thoroughly beaten into fine particles or cinders, a portion of' which is expelled with the exhaust through the netting of the smoke-stack, while another portion accumulates upon the top of the diaphragm, from whence it may be removed frolu time to time. Owing to the arrangement of the diaphragm, the force of the exhaust does not a'ect the sparks or cinders as they escape from the ends of the diving-fines, so that they readily fall to the base of the smoke-pipe, where they lodge or are again carried up by the exhaust, as above described.

Having thus described my invention, what I claim as new is- 1. The conical delector E, constructed with an annular plate, I, as described, for the purpose specified.

2. In a locomotive smoke-stack, the combination of two chambers connected by diving-dues,

one chamber, J, formed by the annular plate I K, in combination With the stack A, deector E, and the detiector E, being arranged t0 receive and smoke-pipe B, substantially as described, for the live sparks from the exhaust, and the other the purpose specified.

chamber, formed by the diaphragm H, being ar- BENJAMIN GARVIN. ranged to receive the spark-cinders after they Witnesses:

have passed through the first chamber, substan- CHR. SAVAN, Jr.,

tially as described, for the purp ose specified. HYP. DAUBEN,

3. The diaphragm H, annular plate I, and ues ALBERT HILTON. (94)

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