US1530615A - Comminuting apparatus - Google Patents

Description

March 24,1925. 1,530,615

E. POHL v COMMINUTING APPARATUS Filed March l 0 1924 s Sheets-Sheet 1- ATTORNEY E. POHL COMMINUTING APPARATUS 'Fi1ed March 10, 1924 3 sheota shoot 5 March 24,1925. r 1,536,615

ATTORNEY hinted Marie, 1925.

UNITED STATES PATENT OFFICE.

EMI P0111... or AUSTIN, PENNSYLVAnIa GO'MMINUTING APPARATUS.

Application filed March -10, 1924. Serial no. 698,020. 1

useful Improvements in Connninuting Apparatus, of which the following is a speci fication. 4 I

My invention has reference :to the manufacture of paper, cardboard, and "the like, and consists in a new apparatus forcomurinuting waste particles of wood, such as wood-chips, for utilizing it as a filling material inthe manufacture of iia-per, cardboard and the like. My new apparatus is designed to effectively disintegrate the material under treatment, and is simple both in construction and operation.

In the drawing herewith to illustrate .nriy

invention, Fig. 1 is a side elevationpartly in section of the new apparatus, the upper portion of the fixed standards being broken away, -Fig. 2 is a fragmentary view seen from the left in Fig. 1; Fig. 3 is a similar view seen from the right- :in Fig. 1; Fig. 4 is a top View; Fig. 5 is a sectional view along line 55 in ig. 2, and Fig. 6 is a sectional view along line 6 6M Fig. 2.

In describing my invention more in detail, I shallfirst describe the apparatus for carrying out my new process, with reference to the drawings.

In lined standards 1, 2 are provided a plurality of sets of cooperating rollers, l, 11, III, IV iireferably made of stone. These rollers however can also be made of artificial stone, emery, basalt lava, or of metal, such as steel, hard bronze, cast steel, or any other suitable hard material. Each set of rollers comprises a large roller 3 and two smaller rollers 4,5 adapted to cooperate with 3. The diameter of the large roller 3 relative to the diameter of the smaller rollers 4, 5 is preferably at the ratio of 2 :1, While the width of the rollers is about three feet, more or less. The large rollers 3 re volve at slow speed, while the smaller rollers 4, 5, revolve at high speed. The large rollers 3 of all the sets-are rotatably journalled in fixed bearings 6, while the smaller rollers 4, 5 are rotatably journalled in adjustable bearings 7, the bearings 7 bemg mounted on supports 8 and under the control of helical springs 9, making the bearings 7 yielding. The large rollers3 are set in slow rotation through a set of mesh ing gears shown in Figs. 2 and 3 and in broken lines also in the lower half of Fig. 1. ,The driving pinion 10 is mounted on a shaft 11 (Fig. 4-) carrying a fast and loose pulley 12 and 13 respectively over which passes a belt 14. This driving pinion 10 directly meshes with the gear 15 mounted on the projecting outer'end of the axisof.

the bottom roller 3 (Fig. 1). The gear 15 in turn meshes through an intermediate gear 16 with thegear 17 on the axis of the next succeeding largcroller 3, and so forth, as-clearly shown in Figs. 13. The small- er rollers 4, 5 are rotated at-a much greater speed than the large rollers 3. To this end, the rollers 4, 5 are driven from a large pulley (not shown) by means of a belt 18 19, 20 mounted on the axes 21, 9.2 of the smaller rollers 4, 5. Also, a tensioning roller 23 is provided to keep the belt 18 taut and in frictional engagement with the said small pulleys mounted on the: axes of the smaller rollers 4, 5.

At the top of the fixed standards 1, 2 provided the feeding table 24, extending across the entire width of the rollers, and having a transverse slot extending projections 26, 9.7 of the feeding table reach between the uppermost jlarge roller 3 and the top-roller 4 of the uppermost set of smaller rollers 4, 5 forming a feeding chute. Between the top set I of rollersand the next lower set 11 of rollers The rollers used are preferably made of a hard stone, either natural or artificial, or they may be made of emery, or a mixture 25. Downward ly Fi 5 which )asses ar und smalloulle 's the apparatus shortly suitable agitating means, the material mixed with a sufficient amount of water flows onto the slotted feeding table 24 which allows the material to pass through the above mentioned fee-din chute to reach the first set (I) of rollers. I-Iere, the material is squeezed under yieldingpressure between and past the slowly rotating large roller 3 and thesmaller rollers 4, 5 revolving at a higher rate of speed than the roller 3. From the first set I of rollers, the material passes down through the next chute to the second set II of rollers where it-is again subjected to thecommimiting combined action of the large rollers 3 and the opposing, rapidly re volving smaller rollers 4, 5, and so forth, until the material reaches the outlet or discharge chute 30 below the bottom set IV of rollers, through which chute the material passes on to screenstobe subjected to further treatment, either wet or dry.

The position of the smaller rollers l, 5 relatively to the larger rollers 3 can be exactly adjusted, an abutment 31 being provided to determine the extreme forward position of the rollers 4:, 5 toward the large roller 3. Because of the provision of the helical springs, the smaller rollers are yielding. The rotation of the rollers is indicated by the arrows in Fig. 1, from which it appears that the smaller rollers rotate in opposite direction to their roller. p

The smaller rollers are held under yielding pressure being under the control of spring 9. The one end each. spring abuts against an adjustable slide block 32, which an be moved to and fro on the support 8 corresponding larger and is held in its adjusted position by screws 33.

I claim as my invention:

1. In connninuting apparatus, the combi nation of a plurality of superposed sets of hard smooth rollers rotatably j ournalled in fixed standards, each set comprising a large roller mounted in fixed bearings and two smaller rollers mounted in movable bearings cooperating with said large roller,

means for rotating all said large rollers of the sets at a uniform slow speed in the same direction by means of a train of gears with idler gears interposed between the gears upon the shafts of said large rollers, means for driving the smaller rollers in each set at a higher uniform speed by independent driving means and means for feeding and guiding the material to be treated between the sets and also between the two smaller rollers in each set.

2. Incomminuting. a1:)paratus, the combination of a plurality of superposed sets of hard smooth rollers rotatably journalled in fixed standards, each, set comprising a large roller mounted in fixed bearings and two smaller rollers mounted in movable bearings cooperating with said large roller,

larger roller in each set, means for holding.

the movable bearings under a yielding pressure relative to the fixed bearings, and means for feeding and guiding the material to be treated between the sets and also between the two smaller rollers in each set.

In testimony whereof I aflix my signature.

EMIL POHL.

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