US984316A - Stoker. - Google Patents

Description

W. H. H. STINBMAN.'

STOKBR. APPLIOAMOH PILED 8BPT.8,1910.

984.31 6'. Patented Feb. 14, 1911.

2 BHEBTS-BHEBT 1.

W. H. H. STINEMAN.

STOKER. APPLIOATION FILED SEPT. 8,1910. I 984,:31 6. I Patented Feb. 14, 1911.

2 SHEBTB-EHEBT 2.

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- to provide 'uniform outlet to the fire box providcdi i is a plan view of 1. Fig. t is a vertical -To all whom tt 'ma/y coaccm:

c the fire' box under the fire Fig. 5 is an end view.

'UNITED STATES PATENT OFFICE.

WIIaIIAM H. H, STINEMAN, OF BALTIMORE, MARYLAND, ASSIGNOM OF ONE-FOURTH TO ARTI-!UR WEGEFARTH, OF BALTIMORE, MARYLAND.

Patcnted Feb. 14, 1911.

Application filed September 8, 1910. Serial No. 581,014.

!This magazine 1 is made of two sections bolted together at The upper section is provided with a uniform opening 4 and a channel 5 extcnding around the upper edge of said opening and into which the fire bricks G are fitted. The grate 7 has its npper surface lush with the upper surface' of th channel 5. It will be seen that by having the channel 5 around the edge of the opening 4 it is not necessary to fasten the lire bi'lttls t' in place and they can readily be removed and new ones inserted when desired.

The conveyer 8 has its front end journaled in the front of the hopper 9 and is straight,

Be it known that I, WILLIAM H. l-l. STINE- MAN, a citizen of the United States, residing y at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Stokers, of which the following is a. specification.

My'nvention relates to improvcnents in furnaces and especially to that class in which the eoal or other fuel is fed froni the bottom of the furnace to the under side of the fire. In this class of devices' the greatest efliciency and extent of fire surface are obtaned, by providing a graduated fuel conveyer, by means of which. a portion of the or uniform in size, back to the inner surface fuel will be forced out of the magazine of the front wall of the furnace, at which point it begins to taper to the rear end thereof, resting in, and confor'ning to, the cone shape of the magazine l'. The shaft of the conveyer, as well as the conveyer itself, is hollow which allows the air to pass into the magazine 1.

At the front of the ma a hopper 0 communicating therewith, and i havi ga neck 11 into which the front end of i the conveyer extends, the said hopper being slightly tapered or tlared at its mouth. The convcyer 8 point adjacent the inner surface of the front wall of the furace to the rear end, thus rcducing its carrying capacity toward the rear of the fire box, which Wlll cause the fuel to i be forced up through the opening 4 over the' l fire bricks (i as it is carried along the said magazine, thercby producing a nniforn (listrihntion of the fuel over the grate 7 throughout the entire length of the fire-box. The/lire rcsting over the opening 4 of the magazine l will keep the lattcr constantly filled and cause the convcyer to feed the fuel through the opening t unifornly throughout its entire length. 4

Tt is found froni experience that the greatest heat exists at a point s'rrounding the 'pening of the magazine to lhe fire-box, frequently causing the burning out of the grate bars at this point. 'l`o obviatc this ohjection T provide a channel 5 around the throughout its entire length, so that an equal distribution of the fuel to the fire will he accomplished. By graduating the feed de- Vice along the length of the fire box in the direction of the feed, the fuel will be distributed and deposited along the length of in even quantities to maintain a uniform supply throughout the area thereof. p

The object of my invention is to provide a graduated conveyer to reduce the carrying Capacity thereof toward the rear of the fire box, whereby a uniform distribution of the fuel in the fire-box will be maintained. And

a graduated magazine having a around the edge with fire-brick.

My invention consists of the novel construction and arrangement of the parts and combination of parts hereinafter more fully set forth in the following speeification and pointed out in detail in the claims.

In the accompanying draWings--Figure 1 is a side elevation ofa fire-box, showing iny invention applied thereto. Fig, 2 is a vertical longitudinal section of Fig. 1. Fig. 3

seetional View on the line m-w of Fig. i.

Referring to the accompanying (lrawi'ngs, forming part of this specification. and in which like reference numerals designate like parts 'throughout the several views ther-cof, pening 4 from the magazine into which are 1 designates a eylindrical conc-shaped nagatitled the fire bricks (i and project lightl zine projecting through the front wall of l above the grate. thus causing th` coal to roll the furnace, and supported at its rear and l over these l'rivks before entering onto the by the supports 2 which latter have one end 1 grate. bolted to the magazine and the other end i n tlehottom of the ncck 11 of the 'hopper projecting into the rear wall of the furnace. l is a door 12 hingcd at one 'side and held up 'azine 1 is arranged.

in position by a pin 13. This door 12 may be opened to remove any hard or lumpy object from the hopper, or for the purpose of em tying the magazine, in which latter event the rotation of the conveyer is simply reversed which will cause the coal to be carried back to the hopper and out of the oted to-a lug 19 on th'e' side of .the hopper and its front end projecting through an opening 20 into the neck of the hopper. An eccentric 21 conneets the said plunger with the gear wheel 15 and as the latter rotates it operatesth front end of saidiplunger in:

and out'of the-opening. 20 between the flights of the conveyer. This plunger operates to prevent'any hard or lumpy object from re- 'ma ining in or. choking the conveyer as it' ro- The plunger 18 also acts as a 'cut-off tates. to hold the coal so that the conveyer will force' it along in the nagazne a-d assure.

a co'ntinuous feeding ofthe same.

By feeding the fuel tQ-the fire box from under the fire in the nianner shown and des'cri'bed,no smoke will escape' froni the furnace as all gases `will be consuued and a more perfect conbustion produced, resulting in a great saving of fuel, and eeonony n oneraton.

'Having thus described n y .nvention, what I claim is:

1. In an underfeed furnace, the combination of a fire-box provided with a fuel sup'- port, a substantially horizontal magazine within said fire box having at its top a uniform opening extending substantially from end to end thereof, fire bricks supported at the sides of said opening and extending above the same, a screw conveyer within said magazine,.the upper surface of said conveyer being below said opening and a plnnger at the forward end'of said conveyer novable into and out of operative position with respect to the space between the flights .thereof.

2( In an nnderfeed furnace, the combination of a fire-box provided with a fuel support, a substantially horizontal magazine within said fire-box having at its top a uniform. opening extending substantially from end to end there'of and a channel at the upper edge ofisaid opening fire bricks supported in said channel and extending above said opening, a screw conveyer within said magazine, the pper surface of said conveyer being below said opening, and a plun ger at the forward end of said conveyer novable into and out of operative position with respect to the space between the flights thereof. i I

In testinony whereof Iafiix my signature in presence of two witnesses.

lVILLIAM H. H. STINEMAN.

lVitnesses CHAPIN A. FERGUSON, ROBERT'C. RHoDEs.

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