US490242A - Thirds to edwin - Google Patents

Description

UNITED STATES PATENT ANDREWV T. BREIVER, OF, MINNEAPOLIS, IN'IINNESOTA, ASSIGNOR OF TWO- THIRDS TO EDWIN C. HOLMES AND .I AMES M. BOYD, JR., OF SAME PLAGE.

SPARK-CATCH ER.

SPECIFICATION forming part of Letters Patent No. 490,242, dated January 1'7, 1893.

Application tiled September 6, 1892. Serial No. 445,162. (No modeld To all whom t may concern:

Be it known that I, ANDREW T. BREWER, of Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain Improvements in Spark-Catchers, of which the following is a specification.

My invention relates to means for intercepting and catching the sparks from locomotives, thrashing machine boilers the. thereby preventing their escape from the smoke stack and all possible danger of fire in the districtsurrounding the location of the boiler.

The object of the invention is to greatly simplify the construction of spark catchers, to dispense with the screen or sieve ordinarily employed, and to provide means in connection therewith whereby sparks after being caught and cooled may be discharged in a body.

To this end my invention consists in the combination with the upper part of the smokestack provided with an inwardly turned deflector, of a basin or sleeve arranged therein beneath said defiector and provided with a valved bottom arranged to be opened at intervals to discharge the body of collected sparks or cinders and further the invention consists in various details of construction and combinations all as hereinafter described and particularly pointed out in the claims.

The invention will be more readily understood by referenceto the accompanying drawings, forming a part of this specication, in which:-

Figure l is a vertical sectional elevation of a smoke-stack provided with a spark catcher embodying'myinvention. Fig. 2 is a detached elevation of the spark receptacle, showing the bottom thereof open.

As shown in the drawings, the lower part 2 and the enlarged upper part 3 of the stack are of the usual construction with the exception that the upper part has the hood-like part 4f inwardly and downwardly curved at the center to form the contracted exit opening 5 and the angular dedectoror flange 6. Within the stack and supported therein by braces 7 is the conical sleeve or receptacle 8 having a large open top occupying a position just beneath said flange and of greater diameter than conical parts 9 and 10 attached to the lower 55 end of the sleeve 8 by hinges ll and having their upper edges so lapped and formed as to make a tight joint with the lower end of the part 8 when closed as shown in Fig. 1 and in dotted lines in Fig.2. For opening the valve v6o thus forming the bottom of the spark receptacle I provide the flat bar 12 pivoted at its inner end to the part 9. This handle bar passes through the hole 13 in the stack and is notched on its lower side so that When forced in it may be locked by engagement with one shoulder of the opening 13. The part 9 closes inside of the part 10 and in order that the latter part may be opened with the former I arrange the studs or lugs la on the upper 7o corners of the part 9, the same being adapted to operate in the inclined slots 15 arranged in the overlapping corners of the part 10. To facilitate the closing of 9 into 10 I make the inner edges 16 of the first straight While the 75 edges 17 of the part 10 are curved. The opposing edges thus slipping readily one over the other. It will be observed also that the part 10 is longer than the other so that its lower end lprojects somewhat beneath that of 8o the part 9 when the two are closed together.

The operation of the device is as follows. The valve or cone-bottom of the receptacle being tightly closed, the escape of the smoke upward through the receptacle Sis prevented and the smoke is forced upward in the narrow channel formed between the stack and the outside of the receptacle. Arriving at the upper edge of the receptacle the smoke passes into the large annular chamber formed be- 9o neath the hoede and its velocity is decreased so that as the products of combustion pass over the receptacle the sparks and heavier particles are deflected and precipitated into the same fallin g into the bottom thereof While the spark freed smoke passes out through the exit 5. When a considerablebody of sparks or cinders has collected in the receptacle 8 the steam exhaust beneath the stack is closed to shut down the draft and the cone valve is roo opened whereupon the sparks drop down into lthe spark box of the boiler.

Having thus described my invention I elairn as new and desire to secure by Letters Patent:-

1. The combination, in a spark Catcher, of the stack provided with the annular deeotor, with an open receptacle arranged beneath said deileotor, and a valved-bottoln for said receptacle, consisting of semi-conical hinged parts arranged to be opened or closed as described, and for the purpose speeied.

2. The combination with asrnokestaok provided with a defleetor, of a spark receptacle arranged therein beneath said deeotor, and a valved-bottom for said receptacle, consisting of the semi-conical hinged parts pivoted thereto, and having overlapping edges, making the Whole tight When closed, and means for opening and closing said parts, substantially as described and for lthe purpose speciiied.

3. The combination with a stack provided with a defleotor, of a spark receptacle arranged therein beneath said deeotor the valvedbottom for said receptacle, composed of lthe semi-conical parts 9 and l0 having overlapping edges hinged to the lower end of said receptacle, the part 10 provided With slots l5` lugs 14 on the part 9 extending into said slot. the part 9 adapted to close within the part l0 and an operating bar extendingto the outside of the stack, all substantially as described.

In testimony whereofI have hereunto set inv hand, this 3d day of September, A. D. 189:?. at Minneapolis, Minnesota.

ANDREW T. BREWER.

In presence of- A. C. PAUL, F. S. LYON.

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