US1462728A - Spark arrester - Google Patents

Description

(2. D. WRIGHT SPARK ARRESTER Jul 24, 1923..

iled Feb. 18, 1922 Patented July 24, 1923.

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CHARLES 1). Warsaw, or SAN raaucrsoo, CALIFORNIA, ASSIGNOR or ONE-HALF are I CARL e. rnnrz, or salt FRANCISCO, CALIFORNIA.

SPARK ARBES'IER.

Application filed February 18, 1922. Serial No. 587,562.

To all whom it may concern:

.Be it known that I, CHARLES D. WRIGHT, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Spark Ar resters, of which the following is a specification.

The present invention relates to improve ments in spark arresters for use in connection with the stacks, chimneys or flues of furnaces, garbage incinerators and like structures wherein the products of combustion are carried off thru a flue or chimney and the primary object is to provide a simple, inexpensive and efficacious construction which will positively prevent Cinders. sparks and the likefrom being carried out thru the flue with the smoke and which will cause the arrested sparks, cinders and the like to be deposited'into a receptacle from which they may be removed from the apparatus in a cleanand eflicacious manner.

A further object is to provide a spark arrester of the character described which is constructed so that it will not only arrest sparks, Cinders and the like, but may be used to clarify black heavy smoke, whereby soot and the like resulting from combustion of refuse and fuel will be prevented from beingdeposited upon the roofs and from being scattered in the vicinity of the stack or flue.

Referring to the drawings, the figure represents a vertical sectional view of the apparatus of this invention.

The preferred form of my invention illustrated in the accompanying drawing comprises an upright flue or stack 1, leading from a furnace or incinerator and having a damper 2 therein. Connected with the upper end or the flue 1 by an elbow 3 is a short horizontally extending flue section l, to the upper end of which a vertical flue section 5 is connected. The flue section 5 is thus connected at a point substantially central of its ends whereby the section 5 has portions of equal length disposed above and below the section 4. The section at is provided in its upper side and adjacent its outer end with a bafile plate 6 which extends downwardly and forwardly from the upper side of the section 4, so that its forward end terminates substantially flush with the forward end of the section 4, and spaced above the lower side of the section 4 a distance approximately one-half of the diameter of said flue section. This baflie may have a re. inforcing or bracing plate or strip 7 extending from the forward lower edge thereof upwardly to the upper side of the section 4. Extending in the same plane as the baflle and across the flue section 5 is a piece of.

wire screen 8. The baflle 6 and screen 8 extending entirely across the sections l and 5 are so arranged that as the products of combustion pass thru the flue 4, they will be deflected downwardly and outwardly from the flue i and immediately brought under the screen 8. The screen 8 will cause the sparks and heavier products of combustion to be separated from the lighter particles,' such as the smoke, and the smoke will ass upwardly in the section 5 and out thru the upper end thereof. A clean out opening 9 is provided in the section 5 above the screen and is closed by a sliding door 10, said opening being arranged to permit of the brushing or cleaning of the screen from above. The Cinders and heavy particles of combustion will drop into the lower part of the section 5, said section 5 having a closed lower end 11. The end 11 is adapted to rest upon a suitable support 12, whereby port the damper in a variety of positions and regulate the size of the opening thru the flue section 16, the pin being adapted to rest upon the upper side of said section when supporting the damper. The outer end of the flue section 16 is adapted to extend thru an opening 20 formed in one side wall of a substantially rectangular refuse receptacle 21. The receptacle 21 is adapted to rest upon the support 12 and in the wall thereof opposite to the wall having the opening 20, is provided with a corresponding opening 22 having a sliding door 23 normally closing the same. The receptacle is held in place by a hook 24 attached to, the flue 5 and adapted to engage in an eye 25Hon the receptacle.

In the operation of the appartus, when the. products of combustion, on account of thebaflie 6, are defiecteddownwai'dly and forwardly into the flue section 5 beneath the screen 8, the heavy particles, such as cinders and sparks, will drop into the lower and of the section 5. If the, door 23 is opened slightly, a down draft may be created and the heavy particleswill be drawn into the receptacle 21. The vertical section 5, in being. connected centrally of its ends with the flue 4:, will balance the draft within the said section 5 so that the smoke and products ofycombustion do not have a tendency to immediately rise and pass out of the section 5 into the atmosphere. The heavy particles willnot be influenced, dueto the balanced draft, upwardly and will freely gravitate intoithe member 5. Another point of advantage isthat when heavy black smoke is conducted into the section 5 instead of passing immediately outof said section it will be iInOVBCl downwardly or be retained in said -adiate updraft in the section 5 and to provide,

if desired, a down draft in said flue section.

With reference to the foregoing description and accompanying drawing, it will be seen that I have provided an extremely simple and inexpensive spark arrester, which will not only arrest sparks, cinders, pieces of paper and the like, and prevent scattering and accumulations of these particles in the vicinity immediate to the. flue, but will serve also as a smoke clarifier.

I claim: v

1. A spark arrester embodying in its construction a fine section thru which products of combustion from a furnace and the like are adapted to pass, an upright flue section having communication at a point intermediate of its ends with one end of said first named section being open at its upper end and closed atits lower end, a battle member extending downwardly andforwardly from the upper side of the first named flue section to a point where said section is connected with the upright section, and a screen extending from said baffle member so as to lie in the path of the products of combustion risingin said upright section. a

2. A spark arrester embodying in its construction a flue section thru which products of combustion from a furnace and the like are adapted to pass, an upright flue section having communication at a point intermediate of its ends with one end of said first'named section being open at its upper end and closed at its lowerend, a baflie member extending downwardly and forwardly from the upper side of the first named flue section to a point where said section is connectedwith the upright section, a screen extending from said bafflemember so as to lie in the path of the products of combustion rising in said upright section, said upright section having an opening adjacent its lower end and a slidable closure for said opening. 7 a. a

CHARLES D. WRIGHT.

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