US330420A - Spark-arrester - Google Patents

Description

- llnirnn STATES JOHN M. PITCHER, OF SUGAR GREEK, INDIANA.

PATENT @rricn.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 330,420, dated November 17, 1885.

Application filed March 31, 1885. Serial No. 160,733. (No model.)

To all whom it may concern:

Be it known that I, JOHN M. PITCHER, of the town of Sugar Creek, and State of Indiana, haveinvented certain new and useful Improveprovements in Spark-Arresters, of which the following is a specification.

The object of my invention is to provide means for arresting the sparks issuing from furnaces for heating locomotive, portable, and stationary steam-boilers. I accomplish this object by means of thedevice described in this specification, and illustrated in the drawings filed herewith,and made a part hereof.

Referring to the drawings, in which similar letters of reference relate to similar parts of my invention, Figure I is a side view of a boiler with my device attached. Fig II is a vertical crosssection of Fig. I, on the line X X. Figs. III and IV represent modifications of the spark-arrester,in sectional view, as applied in Fig. I.

In Fig. I, b indicates in dotted lines the boiler, with the ordinary fire-box, fl), bridging DI), and fiuesfl.

d is a drum or jacket, constructed of sheet or boiler iron, of any desired strength, and made in three sections. The central section,

a, is a plain cylinder. The two endsections,a

and a", are conical. These sections are firmly riveted together to form a steam-tight casing around the boiler, when attached thereto at the two ends, as indicated in the drawings, and supported by a suitable frame.

0 is a collar attached to the boiler over bridging-chamber bb, and G is a collar attached to the top of section a of drum d, to receive the spark'arrester sp, which consists of three sections of pipe,1,2,and 3. Section 1 of said pipe fits over collar 0 and receives the sparks and smoke from the bridging-chamber bb, as indicated by the arrows, discharging the same into section 2 of the arrester, through which the sparks and smoke pass and discharge into the chamber ch.

Sections 1 and2 of my spark-arrester may be connected at the upper ends, as indicated in Figs. 1, III, or IV. In either case a dischargepipe, 3, is so arranged that one half thereof extends over ascending section 1, and the other half over the descending section 2, of the spark-arrester, as shown by the various relative figures.

0 is a cap made to fit over the top of section 3, provided with a hinge, by means of which it is opened and closed at will.

0 is a Smokestack attached to section a of drum d, and communicating with chamber ch.

st is an exhaust-steam pipe through which steam or air is injected into the bridging chamber bb. The chamber ch is so adjusted as to leave a larger space above than below the boiler, as indicated in Fig. II.

The ascending section of my spark-arrester sp is placed over and perpendicular to the bridging-chamber bb, and joined to the descending section2 at the upper end. Section 2 inclines downward and connects with cham ber ch of drum (1. Sections 1 and 2 connect with section3, which is so arranged as to project half over the ascending and half over the descending sections, and is provided with a hinged cap, 019, which can be opened and closed at will.

The space between sections 1 and 2 of said spark-arrester is covered by a concave sheet. (See Figs. III and IV.)

The method of operating my device is as follows: Before firing up I open the cap op, which allows the smoke to issue through section 3 of my arrester. When sufficient steam has generated to set the machineryin. motion, the cap op is closed and the exhaust-steam is injected into chamber bb through stezam-pipe st, creating a draft, which forces the smoke and sparks up through section 1 of my sparkarrester, and down through section 2 and into chamber ch, as indicated by the arrows. I

In practice I prefer one of the various de vices shown on the drawings; but I do not wish to confine myself to this construction of my spark-arrester, as it is obvious that any arrangement for conducting thelive sparks and smoke from chamber bl) into chamber ch will accomplish the same object in a more or less satisfactory manner without departing from the spirit of my invention.

The advantages I derive from the use of my invention are as follows: I effect a saving of a large per cent. of fuel, and avoid the danger attending the use of boilers not provided with my device-an object greatly to be desired.

Having thus described my invention, its purposes and advantages, what I claim as new, and desire to secure Letters Patent, is-- 1. In a spark-arrester where exhaust-steam jacket d, with its collars O and O,a spark-aris employed for creating a draft, a drum or rester, sp,consisting of three sections, 1, 2,and jacket so arranged as to form a chamber 3, and a hinged cap, 0 0, to form a conductor around boilers, in combination with any defrom chamber bb to chamber ch, and steam- 2o 5 vice for conducting smoke and cinders from injecting pipe st, all constructed and comfire-places with steam or atmosphere, substanbined as illustrated in the drawings and detially in the manner and for the purpose Set scribed in the specification, substantially in forth. the manner and for the purpose set forth.

2. In a spark-arrester for steam-boilers, the In Witness whereof I have hereunto set my 25 IO combination of the drum or jacket d, made in hand and seal, at Indianapolis, Indiana, this three sections, the central section of which is 25th day of March, A.-D. 1885. cylindrical and the two end sections conicalshaped, with steam-pipe st, smoke-stack 0, JOHN PITOHER' and spark-arrester 81), substantially in the Witnesses: 15 manner and for the purpose set forth. JAMES SULGROVE,

, 3. A spark-arrester consisting of drum or JOSH E. FLOREA.

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