US1651026A - herkenrath - Google Patents

Description

Nov. 29, 1927. 1,651,026

I F. HERKENRATH E AUTOMATIC FEEDER Filed July 28, 1925 2 Shee at l INVENTOR Frank rken rq7% wiia #611114 ATTORNEY F. HERKENRATH AUTOMAT I C FEEDER Nov. 29, 1927.

F'iled Jul;v 28, 1925 2 Sheets-Sheet 2 ATTORN EY Patented Nov. 29, 1927.

PATENT OFFICE.

FRANK HERKENRATH, OF SANTIAGO, CHILE.

- AUTOMATIC FEEDER.

Application filed July 28, 1925. Serial No. 46,542.

This invention relates to mechanism for automatically'feeding fuel into the fireboxes of furnaces, the object of the invention being to provide an improved apparatus of this character in which the automatic feeding of the fuel is accom lished by a series of alternating slow'bac ward and rapid forward movements of the grate, and the sudden stopping of the forward movement, and in which device provision is made for regulating the extent of such movement.

A further object of the invention is to provide an apparatus of this character hav ing means for regulating the amount of/fuel supplied to the firebox at each forward movement of the grate.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention consists in the novel features of construction and combination of parts which will be more fully described hereinafter and particularly pointed out in the claims.

In the drawings accompanying and forming part of this specification,

Fig. 1 is a vertical longitudinal section of an apparatus embodying the features of the present invention, the section being taken approximately on the line II of Fig. 2.

ig. 2 is a front elevation thereof.

Fig. 3 is a fragmentary rear view of the chute illustrating the gear and rackmechanism for raising and lowering the fuel door.

The same characters of reference designate the same parts in the different-figures of the drawings.

Referring to the drawings, the feeder consists of a supporting frame adapted to be disposed in front of the firedoor of a furnace, as is customary. The frame comprises a pair of uprights or standards 2 and 3, one at each side, said standards being bolted to suitable bases ,4 provided therefor in the floor of the building. Mounted on these standards is a fuel chute 5, prefer'abl 'rectangular in cross section and funnel-s 2. ed in side elevation, the chute being secure to thestandards by means of angle irons 14 and bolts 15. The chute isprovided at the side thereofadjacent to the firebox with a re ulator or door 6, said door being vertica 1y movable between guides 7 securedon the inner surfaces of the side walls of the chute. For the pufipose of raising and lowering said door an thereby controlling the amount offuelpassing through the opening 8, a shaft 13 is mounted in bearings carried by the side walls ,of the chute, said shaft carrying a pair of pinions 11 in mesh with a pair of vertical racks 10 carried by the door 6. The shaft 13 also has fixedly mounted thereon, exteriorly of the chute, a inion 12 in mesh with a toothed segment carried at one end of a lever 9 pivoted in one 'of the side walls of the chute. It ill thus be seen that by swinging the lever on its pivot the door 6 may be raised or lowered, thereby increasing or decreasing the size of the opening Sand permitting more or less fuel to ass into the furnace.

The urnac'e is provided with a vibratory grate, designated enerally by 16, which is supported independently'of the frameabove described, and which comprises a pair of longitudinal iron bars 17 secured at one end to a transverse end member 18,'the barsb eing connected together near their opposite ends by a plate 19, thus forming a ver rigid, and substantial frame. Mounted on t e side bars 17 and plate 19 in position to close the lower end of the chute 5, is a table 40 carrying brackets 20 adapted to support one end of a series of inclined grate bars 22, the opposite ends of said grate bars being seated in a1'e cess 21 formed in the end member 18. A pair of side walls 23 are provided, one at each side of the grate carrying frame, there by to direct the fuel toward the ash it.

The grate carryin frame above escribed is mounted for osclll'atory movement, and forthis purpose the side bars 17 are provided with a plurality of depending pivot brackets 28, a p urality of similar brackets 29 being mounted onthe base and each disposed in vertical alinement with one of the brackets 28 when the grate is at the limit of its inward movement, as shownin Fig. 1, the brackets 28 and 29 bein connected together by pivoted links 30. Ihe grate-carrying frame is thus ca able of horizontal oscillatory movement w ereby the table 40 is caused to swing beneath the chute 5. A shaft 31 is mounted in boxes B carried at the forward ends of the side bars 17, said shaft having mounted frame-pf the-apparatus, Said shaft havin secure'tlig thereon a pair of cams 26 dispose in bearings carried by a fixed part of-the in"a.linement with the rollers 34 while 8. pulley 27 .is secured on one end .0 shaft 25 for transmitting rotary motion to said shaft from any suitable source of power (not shown). A pair of springs 35 are secured each at one end thereof to a cross bar. 38 secured to the standards 2 and 3, and at-the opposite end, by means of nuts37 to depending brackets 36 carried by the plate 19;

For regulating the extent of movement of the grate-carrying frame, the shaft 31 has secured thereon a pair of eccentrics'32, one adjacent to each end thereof, each of said eccentrics being mounted for rotation in one of loWs the bearing boxes B. A hand lever 33 is secured to the shaft at one end thereof, whereby the shaft and its eccentrics may be rotated in the bearing boxesB thereby to impart to the shaft a planetary motion so as to carry the rollers 34 further away from or nearer to the cams 26, whereby the latter will impart to the grate a shorter or longer reciprocatory movement. v

The operation'of the machine is as fol- Fuel is supplied to the chute 5 from any convenient source'and in any suitable manner. The pulley 27, upon being connected to a shaft, rotates the .are placed under tension. As soon as the.

limit of the eccentric action is reached, which is when that portionof the cams havingthe greatest radius is in contact with the rollers, by the continued rotation of the.

shaft 25 the portion of the cams having the shortest radius is presented to the rollers 34,

whereupon, by the action of the springs 35 the grate frame is given a sudden and rapid movement in the opposite direction, thus carryingia new charge of fuel into the furnace,

The end'member'18 of'the grate frame is 2. An automatic fuel feeding provided with bumpers 39 disposed in position to contact with similar bumpers secured in the wall of the furnace, said bumpers thus sharply stoppingthe movement of the oscillatory grate frame. By reason of the ra id advance of the grate frame and the sud en stopping thereof by the bumpers 39, the fuel.

is caused by the force-0f inertia to advance a step toward an open space communicating with the ash pit, the Width of which space is regulated by the-setting of the eccentrics on "the shaft 31 in the boxes B. Openings 4:].

may be formed in the side walls of the standards 2 and 3 for the admission of air to the combustion chamber.

Having thus described my invention, what I claim is: I

1. An automatic fuel feeding device, 'comprising a horizontally reciprocatory grate frame, an inclined grate supported in said frame. side walls carried by-said frame and movable therewith, means for supplying fuel to said grate, means for moving the Y grate frame in one direction at a comparatively slow speed, means for varying the ex tent of said movement, means for impartlng to the grate frame arapid movement in the opposite direction, andmeans' for suddenly stopping said lastmovement.

device, comprising a horizontally reciprocatory grate frame,a n inclined grate supported in said frame, side walls carried bysaid frame and movable therewith, means for supplying fuel to said grate, means for regulating the fuel supply, means for moving the grate frame in one direction at a comparatively slow speed, means for varying the extent of said movement, means for imparting to the grate frame a rapid movement in the opposite direction, and means forfsuddeniy ,stop. ping said last movement. v

In testimony whereof I hereunto aifix my slgnature.

FRAIiIKiHERKENRATHi

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