US231610A - Spark-arrester - Google Patents

Description

13. R. PRUOGTOR.

SparkjArreste r'. No. 231,610. Patented Aug. 24, 18 80;

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N.PEIER8, PHOTO-LITHOGRAPHER, WASHINGTON, n O.

U ITED STATES PATENT OFFICE.

DAVID PEoCToE, or GLOUCESTER, ASSIGNOR To EDWIN WALDEN, OF LYNN, TRUSTEE OF THE SUCCESS SPARK ARRESTER COMPANY,

OF BOSTON, MASSACHUSETTS.

SPARK-ARRESTE R.

SPECIFICATION forming part of Letters Patent No. 231,610, dated August 24, 1880. Application filed March 22, 1879.

To all whom it mag concern:

Be it known that I, DAVID R. PROGTOR, of Gloucester, in the county of Essex and State of Massachusetts, have invented certain Improvements in Spark-Arresters, of which the following is a specification.

This invention relates to that class of sparkarresters in which sparks and Cinders are conductedfrom the smoke-stack to a receiver in the rear.

The object of my invention is to provide for locomotive-engines an apparatus which shall effectually arrest and collect the sparks, cinders, and dust without obstructing the draft of the engine. It also has for its object to provide means whereby the nettings of locomotive smoke-stacks may be easily removed and turned or rotated; also, to prevent the smoke and exhaust steam or vapor escaping from a locomotive from trailing'down intothe space between the engine and the succeeding car; and, finally, to provide convenient means for removing the collected sparks, Cinders, &c., from theirplace of deposit.

To these ends my invention consists in the improvements which 1 will now proceed to describeand claim.

Of the accompanying drawings, forming a part of this specification, Figure 1. represents a side view of a locomotive provided with my invention. Fig. Zrepresents a top view of the apparatus embodying my invention, none of the engine being shown excepting the top of the cab and stack. Fig. 3 represents a section on line w w, Fig.2; Fig. irepresents a sectional perspectiveview of a portion of the.

netting ofa smoke-stack and its holder. Fig. 5' represents a rear view of the curved top or mouth of the smoke-stack. Figs. 6 and 7 repsent, respectively, side and top views of the chamber with a deflector.

Similar letters of reference indicate like parts in all the figures.

In the drawings, A represents the body of the smoke-stack, whichis of ordinary construction. p

B represents a curved end or month, which is applied to the stack, and is formed to deflect the current passing through the stack to a horizontal direction, as indicated. The end or mouth B is cylindricalwhere it joins the body of the stack, and is flattened orelon gated to an oval shape at its upper end, as shown in Figs. 3 and 5.

0 represents a chamber about eight inches deep, which constitutes an extension of the stack B, and is arranged to receive the current passing from the top B. The chamber extends back a sufficient distance to contain a netted opening, D, of considerable size-say three feet across--(which opening is entirely in the rear of the end or month,) and to form an imperforate hood or guard, c, behind the opening, which hood or guard is a portion of the top of the chamber. The rear end of the chamber O is preferably semicircular or rounded.

E E represent eduction-pipes, each about four inches in diameter, leading backwardly from the chamber 0. These pipes Communicate with the chamber through a flaring mouth, E, under the hood or guard 0, which mouth is practically a continuation of the semicircular end of the chamber.

If desired, a single pipe of larger area may be employed instead of two pipes; but I prefer to use two, in order that they may pass on each side of the whistle of the locomotive.

F represents a receiver located on the roof of the cab. This receiver is preferably about eight inches deep, and of a length somewhat less than that of the cab. Its forward end is preferably pointed, as shown in Fig. 2. The

pipesEE enter the forward end of the receiver.

Grepresents a netted opening in the forward portion of the receiver, which opening is preferably about two-thirds of the area of the opening D in the chamber. The interior of the receiver back of the opening Gr forms a cavern or receptacle which is practically tight, or, in other words, closed, so that no exit or opening of any considerable size is afforded behind the opening G, excepting oneor more discharge-openings, H, which are closed, excepting when the contents of the receiver are being removed. The discharge-openin gs H are preferably short tubes orflues extending downwardly from the rear portion of the receiver, and adapted to discharge matter from the receiver to the tender of the locomotive.

The operation of this apparatus is as follows: The upward current of gases, steam, sparks, &c., passing through the stack is deflected by the mouth and caused to enter the chamber 0 in a horizontal direction, the cinders, sparks, and dust being driven by the force of the ex: haust directly across the chamber to the rounded rear end and into the mouth E. The

sides and bottom of' the chamber converge or curve gradually to the mouth E, as shown in Figs. 2 and 3, so that the current meets no salient angles nor opposing surfaces. The bottom of the chamber is provided with an incline, c, which is flush with the bottom of the month E, and the sides of the chamber join the sides of the mouth with a gentle curve. The current, as it enters the rounded end of the chamber, and the contracted mouth E is divided, the most of the lighter material (the gases, smoke, &c.,) escaping upwardly through the opening D, while the heavier cinders and coal-dust, with the residue of the smoke, gases, and steam, are forced onward horizontally through the pipes E E to the receiver F, into which they are projected with sufflcient force to accumulate the sparks, cinders, and dust in a solid mass at the rear end or cavern of said receiver. The gases, steam, and smoke passing through the pipes E escape through 5 the opening G, which is located so near the front end of the receiver that the escaping steam and gases cannot agitate and carry with them the cinders, sparks, and dust collected at the rear portion or cavern of the re- 0 ceiver. In fact, the force of the gases entering the receiver is not sufficient to agitate the sparks, cinders, and dust after they are deposited therein, the larger proportion of the gases and steam escaping through the opening 5 D of the chamber, so that the remaining portion is just sufficient to facilitate the passage of the sparks, cinders, and dust and deposit them in the rear end of the receiver, as described.

I have found by a practical test of several months on a locomotive that the described apparatus separates not only the sparks and larger cinders, but also a very large proportion of dust and minute cinders and solid 5 5 particles from the smoke and gases, so that there is no annoyance to passengers on the train from the dust or any of the usual emanations from the locomotive, excepting the smoke, which is so purified that it is hardly 6o perceptible.

The netting n, that covers the opening D, is preferably riveted or clamped to a rim g, 1", which rests in a rabbeted ring or seat, 1', attached in any suitable way to the chamber 0. The

6 5 ring 0" is detachable from the ring 1, and the latter is provided with pivoted buttons 1), or

other movable fastenings', whereby the ring 4 may be secured and released. This arrangement enables the netting to be easily removed for repairs, renewal, or adjustment without disturbing the stack.

I prefer to provide the receiver with one or more rakes or hoes, h, having handles proj ectin g through holesin the end of the receiver, so that they can be operated bya person standing on the tender of the engine to draw the accumulated matter in the receiver to the discharge pipe or pipes H. The holes through which the handles pass should be provided with suit- -abie packings, movable or otherwise, to prevent steam, gases, &c., from escaping when the engine is in operation.

01 represents a deflector or flange on the roof of the cab, extending, preferably, from the front end of the same backwardly and behind the receiver. This deflector is inclined backwardly at its rear portion, and is considerably higher than the receiver. Its sides are preferably curved to join the inclined back, and the curved portions are preferably curved inwardly at their upper edges, as shown at d d. This device prevents the smoke and steam escaping from the openings D GrfIOlll being drawn downwardly behind the cab by atmospheric pressure, the curved inclined back of the de- 5 flector forming a chute or guide, which directs the steam, smoke, &c.,inwardly and upwardly, as shown by the arrows in Figs. 1 and 2.

If desired, an upwardly-curved deflector, (1 may be placed on the chamber 0, back of the opening D, as shown in Figs. 6 and 7, 'to prevent the smoke, steam, &c., from trailing down into the space between the chamber and the cab.

I claim as my invention-- 1. In a locomotive spark-arresting apparatus, the combination, with a smoke-stack and a pipe or pipes, E, extending backwardly therefrom, of a receiver arranged to receive in its forward end the pipe or pipes E, provided with a netted opening, G, for the escape of steam, smoke, and gases, in the forward portion of its top, and extended backwardly from such opening to form a cavern or receptacle for cinders, dust, &c., beyond the agitating influence of the gases, steam, and smoke escaping through the opening G, as set forth.

2. The receiver F, located on the roof of the cab and provided with a discharge-opening, H, and a hoe, h, having a handle projectin g through a hole in the rear wall of the receiver and adapted to be moved by said handle to draw the accumulated cinders, 850., in the receptacle into the discharge-opening H, as set forth.

3. As a means for preventing the smoke of a locomotive from trailing downwardly behind the cab, a smoke guide or deflector on the roof of the cab, formed as shown, to give an upward 1 0 direction to smoke passing over the roof.

4.. In a smoke-stack, a metallic ring providedwith a netting, combined with a, rebname to this specification, in the presence of beted holder or seat adapted to receive the two subscribing Witnesses, this 19th day of 10 ring, and provided with buttons or movable March, 1879.

fastenings adapted to hold the ring in place, 5 and also adapted to be displaced to permit the DAVID PROGTOR' ring to be turned on its seat or removed there- Witnesses from, as set forth. 0. F. BROWN,

In testimony whereof I have signed my GEO. W. PIERCE.

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