US1106291A - Sugar-cane mill. - Google Patents

Description

A. F. BWART.

SUGAR CANE MILL. APPLICATION FILED NOV.7,1913

1,106,291, Patented Aug.4,1914.

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ARTHUR FREDERICK EWART, OF HONOLULU, TERRITORY OF HAWAII, .ASSIGNOR TO HONOLULU IRON WORKS COMPANY, OLE HONOLULU, HAWAII, A. CORPORATION OF THE TERRITORY OF HAWAII.

SUGAR-CANE MILL.

To all whom it may concern Be it known that I, ARTHUR Fnunnmon EWART, a subject of the King of Great Britain, and a resident of the city and county of Honolulu and Territory of Hawaii, have invented certain new and useful Improvements in Sugar-Cane Mills; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to sugar-cane mills having hydraulic pressure applied to the top roller of three rollers in triangular arrangement.

In Letters Patent #1.,061,585, issued to me May 13, 1913, I stated that in three roller mills the crushing strain upon the can between the top roller and the feed roller is always less than that between the top roller and the discharge roller, the resultant line of force being inclined to the vertical, and I showed means whereby the position of the top roller with respect to the lower rollers could be adjusted so that the resultant line of force would coincide as nearly as possible with the vertical center line of the housings.

The resultant line of force of the strains separating the rollers in three roller mills is inclined to the vertical, as above mentioned, which causes the top bearings of the upper roller to cant and often to bind against the j aws of the cheeks or housings so as to prevent them from sliding with the vertical movement of said roller. This is due to the preponderance of pressure on one half of each of said hearings on one side of the vertical center line of the housings over that on their halves on the opposite side of the said line.

The object of the present invention is to provide a simple and effective means for applying the hydraulic pressure so as to prevent this canting of the top bearings and cause the said bearings to slide vertically with the movement of the top roller, and without binding, in the upper gap between the jaws of the housings.

This invention contemplates a hydraulic jack operating oil the vertical center of the housing, so as to apply a greater hydraulic pressure on that half of the top bearing of the journal of the upper roller through Specification of Letters Patent.

Application filed November 7, 1913.

Patented Aug. 4:, 1914.

Serial No. 799,716.

which the resultant line of force above mentloned passes than on the other half of the said bearing; means for adjusting the amount that said jack is offset from the vertical center line of the housing; and means for then maintaining the said jack in the adjusted position.

The invention consists in the novel construction, combination and arrangement of parts as are hereinafter described.

In the accompanying drawings, forming a part of this specification, Figure 1 represents in side elevation the upper ortion of a three roller sugar-cane mill embodying my improvements. Fig. 2 is a sectional elevation taken on the line XX of Fig. 1.

Referring to the drawings, the top hearing 1 of the journal of the top roller 2 is adapted to slide up and down in the upper gap in the housing 3 between its jaws 3 and 3 in the usual manner. A distance-piece 1 is secured between the upper ends of the jaws 3 and 3 by the keys 5 and the bolts 6. This distance-piece 4 is provided with a vertical oblong hole l through its center, and with a tongue 4 along the middle of its bottom surface, as shown. The lower end of the hydraulic cylinder 7 is turned spherical to engage a corresponding concave in the top of the steel shoe 8 placed above the top hearing 1. The cylinder 7 is provided with a port S) to which the pipe to the hydraulic accumulator is attached in the usual manner; The top of the plunger 10 is provided with a groove 1O adapted to fit the tongue 4 of the distance-piece 4. The stud bolt 11, provided with the nut 12, is screwed into the top of the plunger 10 and passes through the oblong hole l in the distance-piece 4. A washer 13 is interposed between the nut 12 and the top of the clistancepiece l. Of course, if preferred, the tongue could be made on the plunger 10 and fit a groove in the bottom of the distance-piece 4.

It will now be noted, that the plunger 10 may be clamped to the bottom of the distance-piece 4t in any one of various positions between the jaws 3 and 3", by tightening the nut .12; that the cylinder 7,the shoe 8 and the plunger 10 may be moved together toward or away from. either of the jaws 3 or 8 when the pressure is oil and the nut 12 is loosened; that the tongue 4: guides the plunger 10 during such movement, and

thus insures the proper alinement of the hydraulics with respect to the longitudinal center of the housing 3, represented by the line 21-13 of Fig. 2; that the cylinder 7 moves with the vertical movement of. the top roller 2; and that by shifting the hydraulics as described, a greater or less proportion of the total hydraulic pressure may thus be applied to the top bearing on the side of the vertical center line of the housing through which passes the resultant line of force of the crushing strains which tend to lift said bearing, so that this preponderance may thus be adjusted to balance the angular upward pressure, thereby preventing the said bearing from tilting and binding be tween the jaws 3 and 3".

I claim:

1. In a sugar-cane mill, a housing, a top bearing adapted to move up and down be tween the jaws of said housing, a distancepiece secured between the said jaws, a hydraulic ack operating between the said top bearing and the said distance-piece, and means for adjustably clamping the plunger of the said jack to the distancepiece, substantially as and for the purpose described.

2. In a sugar-cane mill, a housing, a top bearing adapted to move up and down with the movement of the upper roller in the upper gap of the housing, a distance-piece se cured between the jaws forming said gap, a hydraulic jack operating between the top bearing and the distance-piece, means for clamping the plunger of the said jack to the said distance-piece in any one of various positions, and means for guiding said plungeito insure alinement, substantially asand for the purpose described.

8. In a sugar-cane mill, a housing, a dis tance-piece between the aws of the housing, keys and bolts for removably securing the distancepiece in place, and a hydraulic jack plunger provided with a groove adapted to fit a tongue on the bottom of the distancebearing and the distance piece, said jack comprising a cylinder and a cooperating plunger, one of the same beingadjustably carried by said distance piece.

In testimony whereof I afiiX my signature, in presence of two witnesses.

ARTHUR FREDERICK RWART.

Witnesses P. H. BURNETTE, Rom. J. PRATT.

Copies of thia patent may be obtained for five cents each, by addressing the Gommissioner of Eatents, Washington, D. G.

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