US182713A - Improvement in spark-arresters - Google Patents

Description

W. RUsHToN. SPARK-1tRRFEJSTER..V

' Patented Sept. 25.1875.

WILLIAM RUsHroN, or ATLANTA, GEORGIA.

,IMPROVEMENT IN SPARKARRESTERS.

Specification forming part of Letters Patent N o. 182,713, dated September 26, 1876; application filed.'

June 1, 1876.

To all whom it may concern:

` Be it known that I, WILLIAM RUsHToN, of the cityof Atlanta, Fulton county, State of Georgia, have `invented Improvements in Locomotive-Stacks, of which the following is the specification The objects of my invention are, to prevent the constant escape of sparks from the stacks of locomotives, but to collect and discharge them at intervals, to insure a free draft without discharging the sparks, to impart increased durability to the stack, and. facilitate its con- -nection to the boiler; and these objects I attain by the arrangement and construction illustrated in the accompanying drawing, in Which- Figure l is a sectional elevation of a locomotive boiler and stack showing my improvements; and Figs. 2 and 3, detached plan views.

To the boiler A is bolted a saddle, B, having' a dan ge, a, adapted to the boiler, and an upper iiange, af, to ears of which is bolted a ring, B', having two concentric upright flan ges, c c', the outer iiaring case C of the stack being bolted to the flange o, and the inner cylindrical pipe D being bolted to the ange c. Upon the ring B' is cast a hollow enlargement, d, which projects through an opening in the saddle B, and with this enlargement communicates a pipe, E. In the side of the enlargement is an opening, a', directly opposite which, and cast with and projecting from the ring B', is a short pipe, F, level with the bottom of the stack, and serving to support the case of a sliding, rotating, or other valve or damper, e, operated by a rod leading to the cab ofthe engine. The tube E leads to a three way cock, G, from which extends a pipe, El, communicating with the boiler at any desired point, and a pipe, E2, communicating with the usual blowpipe s in the combustion-chamber. At the edge of the opening in the usual inclined top H is a plain imperforate curtain or flange, I. Extending downward and within the stack is as independent lining, J, consisting of a caststeel plate extending below the top of the pipe D, bent or otherwise formed to coliform to the caseA, and to form an inwardly-inclined Ilan ge, f, adapted to the inclined top H, as shown. Above the uptake is an inverted conel or funnel,

lower face, and provided with recesses or sockets i to receive the upper ends of' V-shaped,

,grooved, or hollow guards, L, consisting of chilled iron, resting on or in sockets in the flange or plate m at the upper edge of the pipe D, and covering the bolts n, which secure the funnel in its position. Y

The sparks carried upward by the exhaust, striking the smooth inclined surfaces of the funnel, are deflected outward without being materially broken, and thrown against the liner J, which prevents the wearing either of the outer case A or the top H. This is an iniportant feature of my invention, as liability to Wear away at the point of junction of the side and top of the case has heretofore been a serious objection to this. form of stack.

When the sparks have accumulated in the receptacle X, the engineer opens the valve e, and, turning the cock G, discharges the jet of steam or water, or both, through the opening or nozzle x through the mass of sparks in front of the same, and through the pipe F, forcibly expelling the sparks, which continue to fallin front of the nozzle until all are discharged.

It will be apparent that by so arranging the nozzle and the pipe F that the sparks must fall between the two, their forcible expulsion is secured, While the valve e serves to retain 'them until a considerable quantity has accumulated, thereby avoiding the constant disdischarge, which is as objectionable from one part of the side of the stack as from the top.

By substituting a three-way cock, G, for the cock usually employed with the pipe E, the steam is admitted to the nozzle w without the use of any expensive appliances, and without any material additions to the devices ordinarily in use. By forming the cone K of chilled metal with a smooth surface, it is rendered much more durable than it would be if of malleable iron and roughened as usual, for I have found that the existence of any shoulder or projection for the sparks to strike against materially diminishes the durability ofthe parts. The guards L serve to support the funnel, and further protect the bolts n, which would otherwise be rapidly cut away, the'sides of the Q ISQJLS guards or standards being on, an angle to each other, thus deiecting the sparks and reducing -'the abrading action.

Itv will be seen that the stack is secured to the ring B', which is simply bolted tot-he saddle B, thus permitting the removal of the stack Without disturbing the` connection with the boiler, the pipe or hollow enlargement F cast with the ring supporting and facilitating the attachment of the. valve appliances, and the hollow enlargement d affording a connection for the pipe E that is not interfered with by the removal ot' the stack.

As before stated, the pipe connecting the nozzle w and the boiler may communicate with the latter at any point, so as to discharge either dry steam, or steam and Water, or Water alone, thus serving as a surface-cock, and to conduct the water to a position to quench and expel the sparks.

Without conningmyself to the precise arrangement of parts shown and described, and without claiming the liner J, which will form the subject of another application,

I claim- 1. The combination, in a locomotive-stack,

serving to conduct the steam or water to the g nozzle x, as set forth.

3. rIhe combination of the nozzle e, pipes E -E1 E2, and three-Way coclLG, as and for the purpose set forth.

4. The guards L, having inclined sides, for the purpose specied.

5. The combination of the guards orsupports L, and funnel K, having sockets i to receive the upper ends of saidsupports, as specified.

In testimony whereof' I have signed my name to this specication in the presence of two subscribing Witnesses.

W. RUSHTGN.

Witnesses: p

CHARLES E. FOSTER, J. W. HAMILTON JOHNSON.

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