USRE9692E - Samuel sykes - Google Patents

Description

Re issued M ay 3 S. SYKBS. Assignor, by mesne assignments, to M. GARLAND. Sawdust Feeder for Furnaces.

WITNESSES:

UNITED STATES PATENT O FICE,

SAMUEL SYKES, OE'CHIPPEWA ITALLS, WISCONSIN, ASSlGNOR, BY MESNE ASSIGNMENTS, TO Ml CHAEL GARLAND.

.SAWDUS'T-FE EDER FOR FURNACES.

SYECIFICATION forming part of Beissued Letters Patent No. 9,692, dated May 3, 1881.

Original No. 91,384. dated June L5, 1869. Application for reissue filed March 2!], i881.

To all whom it may concern: I and shown in top view, to more clearly show Be it known that l, SAMUEL SYKEs, ol'C-hipthan either of the. other figures the contour of pewa Falls, in the county of Chippewa and the shelf and the arrangement therewith of the State of Wisconsin, have invented a new and spreader or fly.

J Improved Sawdust-Firing Device; and I do in the several figures the same part will be 55 hereby declare that the followi'ngis a fulhclear, found designated by the same letter of referand exact description thereof, which will enaonce. ble those skilled in the art to make and use the A A A are three boilers, mounted or set in same, reference being bad to the accompany a well-known manner in the usual arches or to ing drawings, forming part of this specificabrick-work, as shown. 60

tion. B represents the grate or grate-bars of the My invention relates to that sort of con-trivfurnace, and G G the furnace-doors. ances for feeding sawdust to a furnace in which D is a hopper, into the upper larger portion the fuel is supplied to the fire-chamber withor mouth of which the fuel is put, and from 1-5 out the-necessity ofopcnin g the furnace-doors, the lower throat-like and smaller end of which 6 and has forits main object to provide a simple it is fed to the furnace, in a manner to be presaud eiiicient means for not only thus effecting ently explained.

the supply of fuel to the furnace, but for also E is a sort of shelf or bracket like device effecting a thorough distribution or spreading bolted to the front wall of the furnace, and loof the sawdust over the surface of the gratecated, as shown, about centrally'beneath and bar while being fed into the fire-chamber of the a short distance below thelower end (or feedfurnace. in g-orilice) of the hopper D. This shelf E has To these ends and objects my invention 0011- a vertical central perforation in it for the acsists in the employment, in combination with commodation, asshown,of the lowerend of the 2 the furnace for heating one or more boilers, of vertical shaft G, which carries'the fly F, and 7 5 a hopper or hoppers so constructed and arwhich is suspended from and freely rotates at ranged partially within the tire-chamber of the its upper end in the upper journal-box, H, of furnace as to supply the sawdust, as may be a suitable bearer or stand. The object of thus required, and in the manner hereinafter more supporting the said shaft G by means of its 0 fully described, directly to the grate-bars; and collar 9 resting on top of its upper journalmy invention further consists in the employbox, H, is to prevent the fly 1*, secured to said ment, in combination with a hopper-like recepshaft near its lower end, from touching the tacle, and adapted to contain and to discharge upper surface of shelf E, and thus interfering into the fire-chamber the contained sawdust, with the free rotation of said fly over and lll of a shelf-like device adapted to receive the close proximity to the top surface ofsaid shelf. 8 fuel discharged from the lower end of the hop- Said shaft G is provided with an agitator or v per, and aspreader device or fly mounted to rostirring device, G, and is designed to be ro' tate in about a horizontal plane immediately tated by any suitable means. over said shelf-like device, and adapted to As the hoppers and the devicescombined '0 throw off (or fly) the sawdust from said shelf with each are duplicates, the foregoing deand thoroughly distribute it over the surface of scriptions answer for all the hoppers and their the grate or fire-bed, as will be hereinafter attachments. more fully explained. In the drawings the means shown for turn- In the accompanying drawings, Figure 1 is ing the shafts G consist of pulleys secured to a back view of a furnace and nest of boilers their upper ends, and provided with a band 5 having my improvements applied thereto. Fig. passed round about said pulleys, as illustrated, 2 is a transverse section of the contrivance, and carried thence to-a driving-wheel at one taken at the planes indicated by the dotted side of the furnace, which wheel may be driven line am; at Fig. 1; and'Fig. 3 is a detail view of in any desired manner.

the shelf-like device and the spreader detached Each hopper is provided with asort of sliding door or valve, 0?, which forms, as it were, centrifugal action thereon) the fuel horizonone side of the lower portion of the hopper, tally and .send it in a sort of sprayed condi- 3 5 and by means of which the discharge of the tion over the surface of the fire-bed, whereby contents of the hopper may be controlled or a most desirable mode of application of the 5 regulated. As the throats of the hoppers exfine or dust-like fuel is effected.

. tend down into the furnace, are located over Having so fully described my improved conthe grate-bars, as shown, and are between the trivance that those skilled in the art to which boilers, an opportunity is thus afl'orded for my invention appertains can readily underdryiug the fuel contents of the hoppers before stand and practice the latter, what I claim as IO it may be discharged onto the fire. new, and desire to secure by Letters Patent,

The genera'l mode of operation of my imisv proved feeder cont'rivance needs but brief ex- 1. The combination, with a steam-boiler furplanation, in view of the foregoing description I uace, of hopper-like fuel-receptacles, the lower and what the drawings clearly indicate. feeding ends of which are located within the 15 The hoppersD being-properly supplied with firechamber and between the boilers, and the sawdust, their contents are permitted to eswhich are adapted to discharge the sawdust cape from their lower ends as the fuel may be properly, and-in such quantity as may be deneeded, the supply to the furnace being regusired, onto the fire-bed, all substantially as set lated at the vicinity of each hopper by a suitforth.

2o able manipulation of the door or slided of 2. In combination with a boilecfurnace and each. Anycloggiu g or tendency toward cloga hopper-like receptacle having its lower feedging in the narrow throat-like portion of the ing end located within the fire-chamber, a dis- 55 hopper will be overcome by the rotatory agitatributer or spreader composed, essentially, of

' tors, and the feed or discharge of the sawdust a shelf and a rotating fly, the combination be- 25 is regulated by the engineer through the meing such, as described, that the sawdust disdium of the doors d, so as to have the requicharged from the hopper is scattered horizonsite or desired amount of fuel fed to the diftally over the fire-bed, as set forth. 6o ferent parts of the furnace. As the sawdust In testimony whereof I have hereunto set discharges from the lower end of the hopper my hand this 28th day of February, 1881.

0 D it fallsonto the shelfE and the fly .mounted SAMUEL over said shelf, and as the radial wings 0r arms of the fly F are rotated by the turning of shaft G, they spread or scatter (by their In presence ofr R. O. BIERCE, l MARY D. Bmecn.

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