US1109932A - Mill. - Google Patents

Description

J. D. MARSHALL.

MILL.

APPmoATloN rummu 27. 1914.

Patented Sept.v 8, 1914.

wmaoom 1HE' NpRRls PETERS CO., PHOTDYLITHOA. WASHING 10N. n 1' JEFFERSON D. MARSHALL, F NEW-ORLEANS, LOUISIANA,

. MILL.

Specification of Letters Patent. Application iled May 27, 1914.

Patented Sept.` 8, 1914. serial No. 841,178.

To all whom it may concern.'

Be it known that I, JEFFERSON D. MAR- SHALL, a citizen of the United States, and a resident of New Orleans, in the parish of Orleans and State of Louisiana, have invented a new and Improved Mill, of which the following is a specification. i

This invention relates to means for resisting the stresses onV the upper rolls of three-roll mills, especially of mills for crushing sugar cane, and its object is to prol, to Y each other be positioned by mill-housing l the lower roll-shafts and the upper rollvide a mill in which the bolts for resisting these stresses are arranged substantially parallel to the plane connecting the axis of the upper roll with the axis of one of the lower rolls. l y

This invention consists in a three-roll having a slot to receive one of shaft, together with the bearings therefor, and bolts extending substantially parallel and to the line of thrust of these rolls, from the upper cap down through the base of the housing.

In the accompanying drawing, which is a side elevation of a mill for crushing sugar cane provided with three rolls in triangular relation with their axes parallel, 1 indicates the base upon which the housing 2 is secured in any desired manner, The shaft 4 of the roll 5 is mounted in a quarter-box 6, and the cap 7, ram 8, and rods 9 may be of the same construction as similar parts in the Bancroft Patent, Number 1,023,355, dated April 16, 1912. It will be understood that a like construction is used for the other side of the mill.

The housing 2 is formed with an inclined slot or pocket 11, in which is mounted the bearing 12, for the shaft 13 of the second lower roll 14. A wedge-plate 15, which may the screw 16, supports this bearing.

the upper roll 20 rests on the shoulders 18 and prevents metallic engagement between the rolls 2O and 14, The upper bearing 22 and that in turn mounted in the is engaged by the plate 23, by the hydraulic ram 24,

bolts 3' being shown. v

The lower bearing 17 of the shaft 19 of l cap 25, in the manner shown in the Bancroft Patent Number 1,095,067, dated April 28, 1914. The rods 26 may have nuts 27 at their upper ends and keys 28 at their lower ends. They extend substantially parallel to the plane passing through the axes of the rolls 14 and 19, and therefore parallel to the lines of stress between these rolls, through the bed 1, housing 2 and cap 25. The rods 9 extend across through the housing on both sides of the shaft 13 to reinforce it.

Ihe sugar-cane, in the form of short chips, passes to the mill from the right in the drawing, and between the rolls 5 and 20, the distance between these rolls being determined by the ram 8. After this preliminary squeezing, the ch tween the rolls 14 and 20, receiving the full pressure of the upper roll under the force of the hydraulic ram 24, and give up substantially` all the extractable juice. f

The part 30 of the housing is reinforced by the cap 25 and by the rods 9, so that there is little danger of this part'ofr the housing breaking away. As the shafts 13 and 19 are in the same slot, one'cap is saved. As most of the comparatively light stresses, arising from cane passing betweeny the rolls 5 and 20, are taken up'by the rods 9, and as all the stresses arising from the cane passing between the rolls 14 and 20 are taken by the rods 26, the hosing may be made comparatively light.

I claim: y 1. A sugar mill comprising a base, a housing mounted thereon, three crushing rolls andthe shafts for the same, said housing having a pocket and an inclined slot, a bearing for one of the roll shafts mounted in the pocket, bearings for the two other roll shafts mounted in said inclined slot, a cap at the upper end of the slot, and bolts extending through the cap, housing and base, parallel yto the plane passing through the axes of the ips are crushed beslot, hearings for two of the roll shafts specification n the presence of two suh- Iroultec in saclbslot, a capdat the outer end scrbng witnesses. o t e s ot, an olts exten ing through the cap and housing parallel to and on each side JEFFERSON D MARSHALL' of the plane passing through the axes of the Witnesses: shafts in the slot. F. E. ZIMMER,

In .testimony whereof I have signed'this S. L. GRILLOT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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