USRE11146E - Spark-arrester for locomotives - Google Patents

Description

E. B. GIBBS.

Assignor of one-half to W. J. HARRIS. SPARK ARR-ESTER FOR LOCOMOTIVES.

No. 11,146.- Reissued Feb.vl7, 1891.

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UNITED STATES PAT NT O FICE.

EDWARD B. GIBBS, OF NORTH PLAT E, NEBRASKA, ASSIGNOR OF ONE-HALF TO V. JOHN HARRIS, OF ST. LOUIS, MISSOURI.

SPARK-ARRESTER F'OR LOCOMOTIVES.

SPECIFICATION forming part of Reissued. Letters I'atent No. 1 1,146, dated February 17, 1891. Original No. 422,586, dated March 4,1890. Application for reissue filed May 13, 1890. Serial No. 351,704.

To all whom, it may concern.-

Be it known that I, EDWARD B. GIBBS, a citizen of the United States, residing at North Platte, in the county of Lincoln, State of Nebraska, have invented a certain new and useful Improvement in Spark-Arresters for L0- comotives, of which the following is a full, clear, and exact description.

My invention relates to an improvement in I0 that class of spark-arresters in which a baffleplate across the smoke-box is combined with a perforated screen, and has for its object to extinguish the sparks and effect subsequently a more thorough discharge thereof through the smoke-stack.

It consists in features of novelty, as hereinafter claimed.

On the accompanying drawings, Figure 1 represents a longitudinal sectional view of :o the smoke-box and adjacent part of the body of a locomotive-boiler fitted with my invention; Fig. 2, an end View of'the smoke-box omitting the door, and Fig. 3 a detached view, to an enlarged scale, of a portion of the per- 2 5 foratcd screens forming part of my invention, like letters of reference denoting like parts in all the figures.

A represents the body, and B the tubes broken away, of a locomotive-boiler having the fine-plate O, smoke-box D, smoke-stack E, blast-pipe F, and induction or petticoat pipe G, all of said parts being of the ordinary well-known types. To the flue-plate (1, immediately above the top row of tubes B, is fixed the upper edge of a baflie-plate a, which extends entirely across the smoke-box D, and

preferably inclines downward and forward from its junction with the flueplate O to-a certain distance, whence it is directed downward and forward at a greater inclination by an adjustable portion toward its lower edge, which is adjusted. to a suitable distance from the flue-plate (J and bottom of the smokebox D.

4 5 To the battle-plate a, preferably at the j unction of its two inclined portions, is secured the rear end of a horizontal screen I), which consists, preferably, of thin sheet-iron and extends entirely across the smoke-box D, and to a suitable distance forward, so as to leave a space .or opening a between its front end and thefront end of the smoke-box D, as shown. Through the screen I), over that portion only of its surface in front of the blastpipe F, are formed vertical holes I), which are preferably of an oblong shape, and arranged as shown more particularly in Fig. 3, but maybe of any other desired form and arrangenien t-.

Alon g the front end of the perforated screen' b is fixed the lower edge of a secondscreen (l, which. extends therefrom entirely across the upper portion of the smoke-box D at a suitable inclination rearward toward the smokestack E. Through this screen (Z overv its entire surface are holes d, which may be of similarshape and arrangement to the holes 5' of the screen I), or otherwise, as desired.

Opening from the blast-pipe F toward the front of the smoke-box D are jets or nozzles 7 6, through which steam from the blast-pipeF passes into the lower and front portions of the smoke-box D, beneath the screen 1) and in front of the inclined screen cl, respectively.

By the above arrangement the incandescent sparks as they issue from the tubes B, in front of the fine-plate O are diverted downward by the ba'Iiie-plate a to the lower portion of the smoke-box D, beneath the screen b, where they are extinguished. by the. steam So from the pipes c, and are partly carried off by the draftthrough the perforations Z), the remainder being sweptupward through the forward space or opening 0 into the upper forward portion of the smoke-box D,in front of the inclined screenrl, through the holes cl of which they are finally carried off by the draft through the" smoke-stack E instead of accumulating in and obstructing the lower portion of the smoke-box D, as occurs with existing arrangements of this class.

By this invention a large area of perforated screen-surface being obtained, the eflfect of the steam-jets 6, combined with the draft from the blast-pipe F, enables the extinguished 5 sparks to be carried off with the smoke more eifectually than'heretofore, thereby avoiding the necessity of frequent stoppages foi'cleaning out the smoke-box.

\V hen desired, the jet pipes or nozzles 6 may ,1 oo

be omitted, in which case the advantage peculiar to these nozzles, and which is above described, is done away with, yet there is present a substantial improvement in that the draft of theengine is preserved and the cinders are arrested in the upper chamber, and by the combined action of the draft and-the inclined screen are kept in motion on the su rface of the inclined screen until they become broken into particles fine enough to pass through the screen to the smoke-stack, thus extinguishing the sparks and keeping the smoke-box free from accumulation of cinders.

I claim as iny invention- 1. In alocomotive-engiue, the combination, with thesmoke-box and induction-pipe, of a horizontal screen which terminates forward of the induction-pipe, and a transverse forwardly and downwardly inclined screen located in front of the smoke-stack and which meets the horizontal screen at an angle, whereby the cinders are arrested in the upper chamber and kept in motion on theinclined screen, substantially as and for the purposes described. V A I 2. In a locomotive-engine. the combination, intl1esmoke-boX,of abaffle-platea,ahorizon tal perforated screen I), an induction-pipe G, and an inclined perforated screen (I, the said screens 1) dbeing arranged to divide the smokeboX into lower and upper spark arresting chambers communicating with each other by a space or openingcwith jet pipes or nozzles e, admitting steam from the blast-pipeto said chamber, substantially as shown, and for the purpose described.

3. In a locomotive-engine, the combination, with the smoke-box and induction-pipe, of a baffle-plate and a transverse forwardly and downwardly inclined screen located above and in advance of the induction -pipe and terminating short of ,the forward portion of the smoke-box, whereby the cinders are arrested in the upper chamber and kept in motion on the inclined screen, substantially as andfor the purposes described.

In testimony whereof I afiix my signature, in presence of two witnesses, this 9th day of April, 1890.

EDIVARD B. GIBBS.

Witnesses: PAUL BAKEWELL, J osJW. CRooKEs.

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