US737799A - Spark-arrester. - Google Patents

Description

No. 737,799. I PATENTED SEPT. 1, 1903.

H. S. WAINWRIGHT.

SPARK ARRESTER.

APPLICATION FILED my 19. 1902. RENEWED AUG- s. 1903.

no MODEL.

witnesses Eventor m: uomus Pawns ca. FHOTO'UTHO WASNINGTON, n. c.

UNITED STATES IPatented September 1, 1903.

PATENT OFFICE.

HARRY SMITH- VVAINWVRIGHT, ()F ASHFORD, ENGLAND.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 737,799, dated September 1, 1903.

Application filed May 19, 1902. Renewed August 3, 1903. Serial No. 168,124. (No model.)

To all whom, it may concern:

Be it known that I, HARRY SMITH WAIN- WRIGHT, a subject of the King of Great Britain and Ireland, residing at Ashford, in the county of Kent, England, have invented Improvements in Spark-Arresters, of which the following is a specification.

This invention relates to spark-arresting devices for locomotive-engines; and it consists of the improvements hereinafter described and claimed.

The accompanying drawing shows in vertical section suflicient of the smoke-box of a locomotive-engine and accessories to illustrate my invention.

a is the smoke-box; Z), the top row of firetubes; 0, the bottom row of firetubes; d, the blast-pipe; e, the chimney-base, and f a horizontal grid or grating above the top row of fire-tubes.

Between the upper end of the blast-pipe d and the chimney-base c and supported by the blast-pipe there is arranged atube-like sparkarresting structure composed of a lower portion g of upwardly-increasing diameter and an upper portion 72 which is adapted to act as a chimney-cone and is rigidly connected to the lower portion g and decreases in diameter upwardly from its junction with the portion g, where it is equal in diameter to the portion 9 and is located in the grid or grating f, which serves as a lateral extension with openings through it. The structure, which rests on a blower-ring i and is securedto the blast-pipe by bolts j, comprises a top ring 10, a bottom ring Z, an intermediate ring m, notched or recessed bent bars 72, secured to the said rings, and wire or rod 0 of circular cross -section arranged spirally around the bars a and in the notches or recesses thereof. The wire or rod is intended by its spiral arrangement to cause escaping steam to whirl 0r revolve and so facilitate its egress, and it also affords outwardly and upwardly inclined external surfaces adapted to break up cinders and arrest or throw down sparks and glowing particles. In lieu of rod or wire other flexible metal material, as chain or wire rope, may be employed; but it should afiord outwardly and upwardly inclined external surfaces adapted to break up cinders and throw down sparks and glowing particles.

The blast-pipe is a short onei. 6., its discharge-orifice is considerably below the level of the top row of fire-tubes, which is found to contribute to economy in coal consumption.

WVhat I claim is 1. In a locomotive-engine, the combination with a blast-pipe, of a sparlearresting structure comprising a lower portion of upwardlyincreasing diameter and an upper portion of upwardly decreasing diameter and rigidly connected to said lower portion, and an extension having openings through it and projecting laterally from the junction of two said portions.

2. In a locomotive-engine, the combination with a blast-pipe, of a spark-arresting structure comprising a lower portion of upwardlyincreasing diameter and an upper portion of upwardlydecreasing diameter and rigidly connected to said lower portion, said structure being constructed of a framework comprising top and bottom rings and bent bars common to both of said portions and connecting said rings together, and metal material arranged around said framework and presentin g outwardly and upwardly inclined external surfaces adapted to break up cinders and arrest or throw down sparks and glowing particles.

3. In a locomotive-engine, the combination with a blast-pipe, of a spark-arresting structure comprising a lower portion of upwardlyincreasing diameter and an upper portion of upwardlydecreasing diameter and rigidly connected to said lower portion, said structure being constructed of a framework comprising top and bottom rings and bent notched or recessed bars common to both of said portions and connecting said top and bottom bars together, and metal material arranged around said framework and located in the notches or recesses of said bars.

4. In a locomotive-engine, the combination with a blast-pipe, of a spark-arresting structure comprising a lower portion of upwardlyincreasing diameter and an upper portion of upwardlydecreasing diameter and rigidly connected to said lower portion, said structure being constructed of a framework comprising top, bottom, and intermediate rings, notched or recessed bars connecting said rings together, and metal material arranged spirally ICO around said framework and located in the notches or recesses of said bars.

5. In a locomotive-engine, the combination with a blast-pipe, of a spark-arresting struc ture comprising a lower portion of upwardlyincreasing diameter and an upper portion of upwardlydecreasing diameter and rigidly connected to said lower portion, said structure being constructed of a framework comprising top, bottom, and intermediate rings, notched or recessed bars connecting said rings together and, in each of said portions, metal material arranged spirally around said framework and located in the notches or recesses of said bars.

6. In a locomotive-engine, the combination with a blast-pipe, of a spark-arresting structure comprising a lower portion resting upon said blast-pipe and of an upwardly-increas HARRY SMITH lVAINl/VRIGHT.

Vitnesses:

HORACE A. TILLINGHAST, ALEX. RIDGVVAY.

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