US1374125A - Stoker-furnace - Google Patents

Description

J. E. WAGONER.

STOKER FURNACE. APPLICATION FILED NOV. 19, 1919.

Patented Apr. 5, 1921.

1712/62: for

JEWayaner UNITED STATES PATENT OFFICE.

\TUJDSON E. WAGONER, OF MONONGAHELA, PENNSYLVANIA, ASSIGNOB TO COMBUS- 'I'ION ENGINEERING CORPORATION, OF NEW YORK, 11'. Y., A GORPORATION 018 NEW YORK.

STOKER-FURNAGE.

Specification of Letters Patent.

Patented Apr. 5, 1921.

Application filed. November 19, 1919. Serial No. 339,118.

To all whom it may concern:

Be it known that I, J UDSON E. WAGONER, a citizen of the United States, residing at Monongahela, county of Washington, State of Pennsylvania, have invented a certain new and useful Improvement in Stoker- Furnaces, of which the following is a full, clear, and exact description.

My invention relates to improvements in stoker furnaces and has for its object to provide a stoker furnace having a movable grate of considerable width fed locally by a means located at one portion thereof and means for distributing the fuel thus supplied transversely along said grate. It further has for its object to provide a furnace having such a pushing means located at a central portion of the furnace and means for distributing the fuel thus supplied in both directions transversely of said grate.

The following is a description of an embodiment of my invention, reference being had to the accompanying drawings, in which- Figure 1 shows a vertical longitudinal section of a stoker embodying my invention, while Fig. 2 shows ahorizontal section of the same on the line 2-2, Fig. 1.

Referring more particularly to the drawings, 1 and 2 are respectively movable and stationary tubular grate bars of the general type shown in patent to W. R. Wood, No. 818,010 dated April17, 1906, and constituting the upper section of an inclined Stoker grate. 1 and 2 are also respectively movable and stationary tubular grate bars constituting a lower section of the grate. The bars are provided with inlet ports 3, 3' and outlet ports 4, a and the bars 1 and 1 are reciprocated by oscillating rocker bars 5, 5 having flanges engaging recesses inthe bottoms of the movable bars. The bars are supported by a support 7 and walls 6 and 8, which walls with partitions 9 and 10 form air chambers 11, 12 andv 13 11 being a primary air chamber supplying air to the inlets 3-, 12 being a secondary air chamber receiving air fromv 1 and supplying it to inlet 3 and also to fuel superimposed on the bars 1 and 2, and13 being a tertiary air chamber receiving air fromtlie outlet ports at: supplying it to the fuel on the bars The sections above referred to are of considerable width and it is necessary to have fuel evenly distributed thereon from side to side. I accomplish this by my invention by providing a passage 14 leading to a portion of the upper section, preferably the central portion, and of less width than said section, into which passage a hopper 15 discharges. In this passage I arrange a suitable pusher 16 here shown as a reciprocating pusher block which as it reciprocates feeds fuel from the hopper to the upper ends of the inclined grate bars 1 and 2 down which it travels to and over the bars 1' and 2 on account of the movements of the bars 1, 1'. In order to distribute the fuel bed through the passage 14, I provide a,double conveyer having two worms 17 and 18, and means for rotating the same clockwise (Fig. 1). One of these conve ers 17 has a righthand thread and 18 has a left-hand thread so that when rotated clockwise they tend to move fuel from the center in both directions. The conveyer is rotated by a ratchet wheel 19 which is actuated by a pawl 20 carried by a frame 21 embracing the ratchet wheel and swinging on the shaft of the conveyer. This pawl 20 is pivoted at 22 and has a weighted end 23 which tends to hold it in engagement with the ratchet wheel. A detent 24 secured to the frame holds the ratchet wheel from reverse movement. The lower end of the frame 21 is provided with a series of holes to, any one of which a link 26 surrounding an eccentric 27 can be connectedso as to and 18. are revolved to feed coal and the bars 1., 1' are reciprocated to cause it to move down the grate sections toward} the ash pit 3 1.

In order to reciprocate the pusher'block 16, I provide two gears 35, 35 engaging gears on the shaft 28 and provided with crankpins 36, 36, which are connected by links 37',

bars 1 and 2 to chamber 12, whence some of it flows through the upper section to the fuel above, while the balance flows through the tubular bars of the lower section to the chamber 13 and thence to the superimposed fuel. The means for directing the air does not, however, form a part of my invention which consists in the feeding means in conjunction With a moving grate.

As will be evident to those skilled in the art, my invention-permits of various modifications without departing from the spirit thereof or the scope of the appended claims.

What I claim is:

1. In a stoker furnace, the combination of a series ofinclined grate bars arranged adjacent to one another, some of which are movable, a retort adjacent to the upper ends of said bars and transverse to the axes of said bars, a passage located at the central portion of said retort for feeding fuel thereto, a hopper for fuel to be fed, means for feeding fuel from said hopper through said passage to said retort, a double spiral conveyer in the bottom of said retort for distributing fuel fed through said passage to both ends of said retort, and means for actuating said double conveyer.

2. In a stoker furnace, the combination of. a series of inclined grate bars arranged adjacent to one another, some of which are movable, a retort adjacent to the upper ends of said bars and transverse to the axes of said bars, a passage located at the centralv portion of said retort for feeding fuel thereto, a hopper for fuel to be fed, means for feeding fuel through said passage to said retort, a double spiral conveyer in the bottom of said retort for distributing fuel fed. through said iassage to both ends of said retort, centrally located means for actuating said double conveyer, and a bridge located in the central portion of said retort housing said actuating means.

3. In a stoker furnace, the combination of a series of inclined grate bars arranged adjacent to one another, some of which are movable, a retort adjacent to the upper ends of said bars and transverse to the axes of said-bars, a passage located at the central portion of said retort for feeding fuel thereto, a hopper for fuel to be fed, feeding means for moving fuel through said passage to said retort, a double spiral conveyer in the bottom of said retort for distributing fuel fed through said passage to both ends of said retort, means for actuating said double conveyer, said actuating means consisting of a ratchet wheel located at the central portion of said double conveyer, an oscillating pawl for -actuating said ratchet wheel, a bridge located in the central portion of said retort and housing said ratchet wheel and a shaft for operating said feeding means and means operatively connected thereto for actuating said pawl.

4. In a stoker furnace, the combination of a series of inclined grate bars arranged adjacent to one another, some of which are movable, a retort adjacent to the upper ends of said bars and transverse to the axes of said bars, a passage located at the central portion of said retort for feeding fuel thereto, a hopper for fuel to be fed, feeding means for moving fuel through said passage to said retort, a double spiral conveyer in the bottom of said retort for distributing fuel fed through said passage to both ends of said retort, means for actuat ing said double conveyer, a shaft and operative connections for operating said feeding means, and an eccentric actuated thereby for reciprocating said movable bars.

5. In a stoker furnace, the combination of. a series of inclined grate bars arranged adjacent to one another, some of which are ends of said bars and transverse to the axes of said bars, a passage located at the central portion of said retort for feeding fuel thereto, a hopper for fuel to be fed, feed ing means for moving fuel through said passage to said retort, a double spiral conveyer in the bottom of said retort for distributing fuel fed through said passage to both ends of said retort, meansfor actuating said double conveyer, said actuating means consisting of a ratchet wheel located at the central portion of said double conveyer, an oscillating pawl for actuating said ratchet wheel, a bridge located in the central portion of said retort and housing said ratchet wheel, and a shaft and operative connections for operating said feeding ing means for moving fuel through said passage to said retort, a double spiral conveyer in the bottom of said retort for distributing fuel fed through said passage to both ends of said retort, means for actuating said double conveyer, a shaft and operative connections for operating said feeding means, an eccentric actuated thereby for reciprocating said movable bars, a second series of grate bars extending beyond and 10 receiving fuel from the first series, and means actuated by said eccentric for actuating the movable bars of said second series.

JUDSQN E. WAGONER.

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