US945322A - Mechanical stoker. - Google Patents

Description

L J. o. GIESEKE. BGHANIGAL STOKER. APPLIUATION FILED SEPT. 22, 1909.

Patented Jan.4, 1910.

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MECHANICAL STOKER. APPLICATION FILED s122122, 1909.

9455322. Patented .1311.4, 1910.

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una l I' H. J. C. GIESEKE.

MECHANICAL STOKER.

APPLICATION FILED s211122. 190s.

945,322. Patented Jan.4, 1910.

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U NlTED STATES PATENT' oFFIo'E.

HENRY J. C. GIESEKE, F JERSEY CITY, NEW JERSEY.

MECHANICAL STOKER.

lSpecification of Letters Patent.

Patented Jan.-4, 1910.

Application ledSeptember 22, 1909. Serial No. 519,042.

1 To all whom it may concern:

. description.

`My invention relates to mechanical stokers, and has for its object to roduce a Ineclianical stoker which will fee coal uniformly to the grate or grates of a furnace.

It has for its object to produce a uniformand accurate feed by a construction which is simple and eiective in operation.

The following is a description of an emhodiment of my invention, reference being had to the accompanying drawings, in whch- Figure 1 is a longitudinal section of a furnace embodying my -invention. `Fig. 2 is a plan view of the stoker, the walls of the furnace being shown in section. Fig. 3 is an enlarged cross sectional view of the stoker on the line w-w Fig. 1. Fig. 4 is aneularged view of portions of the stoker showing the operating bars and shovels in one position. Fig. 5 1s an enlarged view of the same parts in another position. Fig. (i is a front view of one of the blades. Fig. 7 is a detail view of the end pieces of the blade of Fig. (5.' i

Referring more particularly tothe drawings, 1 is a hopper in which the fuel is ed.

2 is a trough having von its sides brackets 8f3- 3,1m which rest sliding bars 4. To

these bars are pivoted a series of blades 5 Atthe center of.

by means of bearings 6. these blades are levers 7, to which is ivoted a bar 8. This bar 8 has an upwar y provjecting lug 9, to which are connected two .links 10 which are connected together 'by an angle iron y10. To' these links lOare pivotedtwo rocking arms 11 securely4 fastened to a rock shaft 12 which s supported in brackets12, To this rock shaft is rigidly connected a lever 13. To the lever 13 is conf nectcdl a link 14, which is connected to a driving gear 15. This driving ear is provided with a slot 16, through w ich. a bolt 17 passes, securing the link 14 thereto. This' constitutes an adjustable connection ofthe V-link,'and therefore permits its throw, to-

ether with the throw of the lever 11 and ar 8, to be adjusted. The gear 15 is 'driven from any convenient source of power 18.

The depth of the trough 2 gradually decreases from front to rear so that theI cross i section of its interior radually` decreases, and the respective bla es 5 from'front' to rear are correspondingly reduced in depth,

so that successlve blades decrease in'area.-

The trough is held in position by a bolt'419. To the front ends of the bars 4 are connected two links', 20, to which is rigidly connected al blade 21. This blade by gravity tends to' 24 are the boiler tubes with which thel flames and products of combustion come in contact, heating the same.

'On one or both sides of the trough are moving grates25 inclinedat an angle so that when the fuel is Ifed thereon at their,

upper positions it is fed downwardly in aA manner well understood.v

The operation of the apparatus is as follows: The gear 15 being revolving the blades 5 and 21 are moved to 'and fro, being de-f` pressed on the rearward stroke and raised, on the return stroke. Coal is fed into the hopper 1, falling into the forward end of the trough 2. llhe blade 21 moves with the bar 4. As. the blade 21 moves vforward, it shoves its coal toward the rear of the trough and on its return movement lifts so as to rideover the coal and be in a position to shove more coal toward the rear on its next rearward movement. The bar 8 is moved toward the front by the forward movement of the rock arm 11. The first effect of .thismovement n the blades 5 is to lift em from the position shown in Fi 1 int the position shown' in Fig. 5, in whic posit. on they ride over the coal or are easily retracted through it. When they have reached their extreme front position, the bar 8 is caused to move toward the rear, and the first eifec't of this is to tip the blades downward toward the position shown in Figs. 1 and 4. The next eil'ect is to cause the bar 8, together with the bar 4 and the blades 5, to move toward the rear2 carrying the coal -toward therear. This series of steps is continually repeated, with the etlect that the cdal lmoves from the front toward the rear. .As the coal moves from the front toward the rear, t piles up in the trough until it overflows, its edges QG onto the grate 25. The overflow on account of the varying depth of the trough takes place at all points along the trough so that a uniform :tall of .coal takes place throughout both edges of the trough onto the gratos 25. The rate of fall of coal can be adjusted by adjusting the throw of the bar 4 bymeans otfthe adjustable connection at the slot 16.

The apparatus Ais simple and accurate in its action, and feeds and distributesthe coal evenly upon the grate or grates in the manner desired.

That I claim is:

1. In a mechanical stoker, the combination of a trough having a gradually decreasing depth from front to rear, sliding side bars, blades pivoted to said sliding side bars, a connecting rod pivoted to said blades, and means for reciprocating said connecting rod.

2. In a mechanical Stoker, the combination of a trough having a gradually decreasing depth from front to rear, sliding side bars, blades pivoted to said sliding side bars, a ccfmecting rod pivoted 'to said blades, and n: :ans for reciprocating said connecting rod, scid blades -gradually decreasing in depth from `front to rear.

3. In a mechanical Stoker, the combination of a trough having a gradually decreasing depth from front to rear, sliding side bars, blades ivoted to `said sliding side bars, a

, connecting rod pivoted to said blades, means for reciprocating said connecting rod, said blades gradually decreasing in depth from front to rear, and means for adjusting the throw of the connecting rod.

4f. In a mechanical stoker, the combination of a trough having its interior gradually de creasing 1n cross section from iront to rear,

movable side bars, 'a series of blades ivoted to said side bars, said blades from ront to rear decreasing uarea, levers connected to movable independently of said side bars, and

means for reciprocating said connecting rod and thereby reciprocating and oscillating said blades.

6. In a mechanical stolzer, the combination of a trough, a series of blades therein, movable side bars to' Which said blades are pivoted, levers connected to said blades and eX- ten'ding above the same, a connecting rod pivoted to the upper ends of said levers movable independently of .said side bars, means for reciprocating said connecting rod, and means for adjusting the throw of said connecting rod.

7 In a mechanical Stoker, the combination of a trough, a series of blades therein, movable side bars to which said blades are pivoted, levers connected to said blades and eX tending above the same, a connecting rod pivoted Ato the upper ends of said levers and movable independently of said side bars, means for reciprocating said connecting rod,

and means for adjusting the throw of said connecting rod, said trough having a depth decreasing from front to rear and said blades decreasing in depth from front to rear throughout said trough.

HENRY J. GGIESEKE.

Witnesses: l 1

I-I. B. BROWNELL,

GARRETL

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