US1767030A - Incinerator grate - Google Patents

Description

June 24, 1930. J. c. WOODMAN INCINERATOR GRATE Filed 0012.15, 1924 I INVENTOR. 6. WW/MM Y 9 i [6 ORNEYS.

Patented June 24, 1930 warren STATES PATENT OFFICE JOSEPH C. WOODMAN, OF BROOKLYN, NEW YORK, ASSIGNOR TO DECARIEINGINERATOR CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK INOINERATOR GRATE Application fi1ed October 13, 1924. Serial No. 743,279.

This invention relates to grates for incinerators and may be applied to those types which are provided with water-cooled baskets or basket-grates in which the material of the fresh charges is dried and partially consumed before it falls on lower shaking grates where it is finally consumed to a clear ash or clinker.

The principal object of the invention is to re provide an improved grate structure.

The particular nature of the invention as well as other objects and advantages thereof will appear most clearly from a description of a preferred embodiment as shown in the '15 accompanying drawings, in which Fig. 1 is a top plan view of the grates;

Fig. 2 is a sectional front elevation of the grates; and

Fig. 3 is a detail ofthe grate-operating 2o mechanism.

Referring to the drawings the grate system is shown associated with member 55 which serves to support the incinerator or other furnace structure. The incinerator 2 shown is of the jacketed wall type having jackets formed in its external walls. Member 55 and the associated grate system are shown as disposed over an opening leading to the usual ashpit. Referring particularly to Figures 1 and 2, the grate system as shown is made up of a plurality of grates 19, each formed of eight sections secured on a. squared shaft 36 by bolts 37 passing through flanges 38 at the bases of the sections 35 and through flanges 39 of clamping pieces 40. These shafts 36 are arranged in pairs and are journalled in bearings 52, as shown in Figs. 1 and 3, which bearings are at the sides of the ash-pit. Alternate shafts are provided at opposite ends with worm gears 41 meshing with worms 42 journalled in brackets 43 projecting from the sides of the ash-pits. The worms 42 may be turned or rocked manually by the use of suitable implements and serve to lock the grates in any position to which they may be shifted.

The bearings 52 may be single, as shown, and are detachably mounted on the upper horizontal flanges 53 of end and intermediate supporting members 54 that are distributed in parallel rows along opposite sides of a metallic base 55 that is open at the top and bottom, as illustrated in the different figures of the drawings. As shown to advantage in Figs. 1 and 2, each shaft 36 is mounted at its opposite ends in a pair of bearings 52, the shafts being arranged in a plurality of pairs positioned above the supporting members 54. Also, as clearly shown in these figures, the shafts 36 of each pair of shafts are widely spaced apart, and the contiguous shafts of adjacent pairs are in proximity to each other. As readily discernible in Figs. 1 and 2, each pair of correlated shafts carry a plurality of associated grate elements, which overhang the opposite sides of the shafts that carry them to different extents.

WVhile the' bearings 52 are mounted on horizontal faces of the supporting members supporting members 54 and extend beyond the vertical faces thereof.

The hereinbefore described operating means for the grate-carrying shafts 36, which include the worms 42 that are mounted in the brackets 43, as well as the worm gears 41 that are mounted on the shafts 36, are operable to turn or rock the shafts to move their grate elements into upper positions, thus substantially closing the upper opening of the base frame 55, as well shown in Figs. 1 and 2. Otherwise actuated, the operating means is also capable of swinging the grate elements downward through the bottom opening of the base frame into a dumping position, as also shown in Figs. 1 and 2. j

Reference to Figs. 1 and 2 discloses that the peculiar clamping portions of the sections 35 of the grates 19 are formed to it any part of the shaft they are mounted on,

tion, greatly minimizing the amount of repair work, if any should become necessary.

As shown on a larger scale in Figs. 1 and 3, stationary grates 35 parallel opposite sides of the base frame 55 and rest on seats 52 with which the bearings 52 are provided. As seen in Fig. 3, the seats 52' are provided with upwardly projecting ribs or lugs 52" that hold the stationary grates 35 from lateral displacement. In Fig. 1 it is seen that the other grate elements 35 that are mounted on the shafts 36 to turn therewith extend between opposed bearings 52, as well as between the stationary grates 35 on opposite sides of the base 55. The stationary grates 35' extend from one to another of the supporting members 54, as best shown in Fig. 1.

As shown at the right in Figs. 1 and 2, the grate sections are so shaped that when the grates 19 are in operative position the space over the ash-pit 23 is closed so thoroughly as to permit only the finest ashes to pass to the ash-pit, and that, when the grates are turned downwardly as indicated at the left in Figs. 1 and 2, the dumping will be complete. The main portion of each section 35 extends to one side of the corresponding shaft 36 but each section is also provided with a heel projecting in the opposite direction to such an extent as to assure complete dumping between adjacent grates and also at the ends of the grate area. Such grate structure is also particularly advantageous because of its action in breaking up the clinker.

It will be understood that variations may be resorted to within the scope of the invention and portions of the improvement may be used without others.

I claim 1. In a grate system, a metallic base frame open at the top and bottom, supporting members correspondingly distributed along opposite sides of said frame and provided with upper horizontal flanges, bearings detachably mounted on said flanges, a plurality of pairs of shafts each mounted in a pair of said bearings the shafts of each pair of shafts being relatively widely spaced apart and the contiguous shafts of adjacent pairs being in proximity to each other, a plurality of grate elements carried by each shaft, said elements overhanging the opposite sides of the shafts that carry them to a different extent and operating means adapted to turn said shafts to move the grate elements into upper positions substantially closing the upper opening of the frame and to swing said grate elements downward through the bottom frame opening into adumping position.

2. In a grate system, a plurality of parallel shafts, supporting members under opposite ends of-said shafts provided with upper horizontal flanges, bearings secured to said flanges pivotally mounting the opposite ends of said shafts and provided with seats on their upper external portions, stationary grates mounted on said seats extending transversely of the axes of said shafts, grate elements mounted on said shafts to turn therewith between said stationary grates, and means connected to said shafts to turn the same.

3. In a grate system, a plurality of end and intermediate supporting members in parallel rows, single detachable bearings mounted on said end members and pairs of detachable bearings mounted on the intermediate members, said bearings being pro vided with seats on their upper external portions, stationary grates extending over and from one to another of said supporting members and being mounted on said seats, rockable shafts above and extending from one to the other of the parallel rows of said supporting members and being journalled at their opposite ends in said bearings, grate elements mounted on said shafts, and means to rock said shafts.

In testimony whereof I aflix my signature.

JOSEPH G. VVOODMAN.

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