US1401888A - A cob-pobatioh os hew jebsey - Google Patents

Description

W. E. DE VOE.

UNDERFEED FURNACE.

APPLICATION FILED NOV. 5, I920- 1,401,888 Patented Dec. 27, 1921.

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W. E. DE VOE.

UNDERFEED FURNACE. APPLICATION mcu NOV- 5. 1920.

Patented Dev. 27, 1921.

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UNDERFEED FURNACE.

APPLlCATlOt-l FILED NOV- 5. 1920.

1,401,888, Patented Dec. 27, 1921.

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'WIIJIIAH E. DE V03, OF DETROIT, MICHIGAN, ASSIGNOB 1'0 THE UNDE STOKE!!- COMPANY OF AMERICA, 03 DETROIT, MICHIGAN, A CORPORATION 01' NEW' JERSEY.

UNIDEMEED FURNACE.

Specification of Letters Patent.

Patented Dec. 27, 1921.

To all whom. it may concern:

Be it known that I, WILLIAM E. De Von, a citizen of the United States, residing at Detroit, in the county of Wayne and State of'Mich' an, have invented certain now and useful in rovements in Under-feed Furnames, of w ich the following is a specificatron.

My invention, pertaining-to under-feed fiirnuces, relates more erticularly to stokeis of the single-retort, literal-dumping type having loterall y-tiltablc floor-sections, end it has for its ob ects to improve the operation of such stokers for some urposes, and to provide simple, rugged unc efiective met-ho.- nism for operating the tiltingloor-scctions.

In the patents of Arthur Blackburn and Frank E. Fleming, No. 1,826,906 and No. 1,364,237 there are shown different forms of tilts le floor-sections of a furnace of the t e referred to, and for illustrative pur oses show my present invention a plie to a. stoker of construction like appucation Serial No. 262,252 as to its fircox floor. This furnace-construction in general being now well known, illustration and dc scription thereof may be abbreviated.

In the drawings l'igure l is a front clevation with parts in section of the furnacefront; Fi 2 is a cross section through tho fire-box oor, showing normal posit-Lon of the tilting parts; Fig. 3 is a similar view showing operutin positions or" such parts; Fifi l 4 is general 3 a longitudinal section wit zones broken to different planes, the central portions being illustrated in a plum: slightly to the right of index-lins *1l of Fi 1, and the extreme portions being bro on to lanes to the left of said indexline, and igs. 5 and 6 are fragmentary details.

In the type of stoker shown, fuel from hopper 10 is fed by c suitable rum in casing 11 through throat 12 in the furnace-frontwsll 13 into a longitudinal central retort l-l extendin back to the bridge-well 16 with its mout horizontal; this retort having alongside of it, on one side thereof, two courses or series of laterally tiltnblc floorclements 16 and 17 arranged in tandem laterally and pivoted us at 13, 1.) respectively, along their outer edges so that their inner ed s may be elevated to feeding, or load-unflinching angle. In normal posltiou these sections form part of the fire-box floor,

downsloping from the retort to substantially a line of juncture with the ash-dump gate 20, that is pivoted alon its inner ed as at 2.1. u on a partition-we structure which divlc es the ssh pit 23 from the wind-chemher 24 below the floor. Advantageously each inner floor-section 16 has an extension 16 disposed to form a lip portion or extension of the retort 14, the body 14" of which is rigid, such hp being provided with twyers 25, and each of the tiltnble floor elements is provided with a skirt of arcuate section, as at 16", 17" respectively, for known purpose. Of course the arts thus described, a purtenant to one side of the retort, are uplicated on the other, and so for as distinctive reference may be requisite those parts to the left, Fig. 1, will be identified by the prime-mark It will be understood that I do not herein claim the construction so far described per so, nor do I lnmt my invention specifically thereto, as other specific structures involving two series of laterallytiltable floor elements disposed in tandem courses. and pivoted along their outer edges are known, and in operating mechanism may be applied t wrote.

I provide, novell for tilting the two tandem courses of oar-sections singly and alternately to cause the series of inner elements 16 to rise to its evalanching angle while the series of elements 17 is in normal position of rest, and vice verse; and I socom lish the result by means as follows: Eac tiltable element has near its inner edge o. pivot pin 26 or 27, and On these mspectivcl act the upper ends of links 28 and 29. 3h: lziinkshhsve at their llower ends pivot ms 1 t at ectivc a e o oiiite cnds of a rocl n' f lever il d tlmfiirc of suflicient length a to engage and bear in saddles 34 and 35 of brackets 36 r' idly mounted at intervals on wall 22. I one rocks the lever 32 clockwise, outer pin 31 sets on saddle 35 as o. fulcrum, pin 32 rising from its 0 en saddles and elevotin link 28, which pus cs 11 the inner ed of he floorelement 16. unterclockwise rocking of the lever 32 reverses this in 30 remaining seated in its saddle (and cor elements 16 remaining in normal position) while outer link 19 and the inner edge of floor elements 17 are raised.

To rock the levers 82 for all those mechamcnts of the shafts incident to the described rocking-action. Thus, Fig. 1, the two shafts are connected for engine-impelled operation in unison. the two sha'its having fixed thereto levers or crank-arms 41, 41 for rocking; them, these levers having their power-ends connected with respective links 42, 42' that are pivoted also to the lower and upper arms of a centrally pivoted lever 48, mounted on the furnace front. The shaft 40 extends through a keyhole-a erturc 4:5 (Fig. 5) in the front wall, shape to give requisite clearance, and on the shaft is mounted a cover plate 46 pressed against the front wall by spring 47, to cover the o cning 45. Of course, ower may be npplie to any suitable point 0" the exterior lever system, and specifically 50 represents an extension arm of lever 41', connected by pivoted link 51 to the iston rod 52 of a suitable reciprocating engine 53 suitably mounted on the boilerfront. in operation, as piston rod 52 reciprocutes both levers 41, 41' are rocked between dotted-line positions. Each such lever TOPICS lever 32 or 32, shaft 40 or 40 moving bodily as lever 32 or 32' tilts alternately on its two saddles or 'fiulcrn. Consequently one series of floor elements, as 16, rocks while its companion series 17, rests, or vice verse.

I claim:

1. The combination with an underfecd Stoker comprising a retort and two laterallytiltable floor-elements arranged slon one side of the retort, each said element lacing pivoted adjacent one edge, of reciprocatable means for rocking said elemen s singly and alternately comprising a rockin lever, two spaced fulcro therefor, means %or rocking said lever on sold fulcra alternately, and connections from said lever to the tiltable elements.

2. In a device of the character described, :1 retort, two tiltable floor-elements arranged laterally beyond the retort, each pivoted along one edge, a rocking lever, two fulcra therefor, means for rocking said lever on its fulcra alternately and links, connected with the free edges of the floor-elements and with points on said rocking lever adjacent said :tulcm.

3. The combination with an underfeed stoirer comprising a. retort and two laterallytiltable floor-elements laterally beyond the retort, each said element being pivoted adjccent one edge, of two operating links connccted with the free edges of the rcspective floor-elements, an operating lever-"connected at. opposite ends to the two operating links and having fuicra on which it may rock adjaccnt its opposite ends, and means for rockmg said lever.

4. The combination with a furnace having a. front having a shaft 0 Jening, a longitudinal retort and two tiltable floor-elemerits arranged in tandem at one side of the retort, each said element being ivoted near its outer edge links respective y connected with the free inner edges of the said members, a roclrim lever to which said links are connected, and two saddles on which said lever may rock, adjacent the two link-conncctions, a shaft for rockin said lever, extending freely through said shaft-opening in the furnace front and hodily movable therein, and an engine outside of the furnace for actuating said shaft.

5. The combination with a furnace having a from; having a. shaft opening, a longitudinal retort and two tiltahle floor-elements arranged in tandem to one side of the retort, each said element bein tiltable near its outer edge, links respective y connected with the free inner edges of the said-members, a rocking lever to which said links are connected, and two saddles on which said lever may rock, adjacent the two link-connections, a shaft for rockin said lever, extending freely throughsai shaft-opening in the furnnoe front and bodily movable therein, a cover plate for said shaft-opening carried by the shaft, and an engine outside of the furnace for actuating said shaft.

WILLIAM E. DE VOE.

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