US578543A - Calendering-roll - Google Patents

Description

` (No Model.)

' J. BUTTERWORTH.

GALENDBRING ROLL.

. Nro. 578,543. LPatented Mar. 9, 1897.

Witnesses.

` I nventor.

Attorney.

UNrrnD STATES PATENT Ormea.

.IAMES BUTTERWORTH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE H. W. BUTTERWORTH & SONS COMPANY, OF PENNSYLVANIA.

CALENDERlNG-ROLL.

SPECIFICATION forming part of Letters Patent No. 578,543, dated March 9, 1897'.

Application lecl September 9, 1896. Serial No. 605,269. (No model.)

To @ZZ wwm t may concern.:

Be it known that I, JAMES BUTTERWORTH, of the city and county of Philadelphia, State of Pennsylvania, have invented an Improvement in Oalendering-Rolls, of which the following is a specification.

My invention has reference to calendering .measure overcome by the combination of cotton and corn-husks the rolls so constructed lack the uniformity of action found necessary. In rolls of this construction the irregular-sizes and shapes of the corn-husk constituents cause the roll in the complete state to lack that homogeneousness so desirable for perfect work. Its elasticity is not uniform, and it does not respond enough when subjected to a quick blow.

The object of my invention is to produce a calendering or polishing roll which shall secure all the advantageous qualities due to elasticity and at the same time embody a homogeneous structure. To secure this, I employ an intimate mixture of raw cotton and excelsior ber compressed into cylindrical shape under hydraulic pressure. The excelsior fiber, being uniform in cross-section and essentially of a curly character, intertwines intimately with the cotton fiber to form a structure of uniform composition. When this is subjected to heavy pressure, it permanently retains its shape and close relation, and upon being turned downin a lathe the polishing-surface thereof will present a uniform structure. The polishing due to the excelsior fiber will be evenly distributed, and, furthermore, while being smooth and compact the roll has the quality of yielding to pressure and quickly recovering from a sudden blow. The eXcelsior being a Well-known article of manufacture, it can be obtained of uniform 5o size, thus insuring uniformity in the composition of the calendering-rolls. This uniformity insures in the iinished article a structural character which secures great strength, substantially uniform density, and hence elas- 5 5 ticity, and a polishing capacity of equal value throughout its circumference. The possibility of duplicating the polishing-roll is a feature of the greatest importance, since it frequently happens that the new roll must be 6o capable of producing the same polish under the same conditions. This is readily secured by the combination of the uniform eXcelsior fiber with the cotton fiber, since the two can be most intimately and uniformly com-mingled.

In the drawings, Figure l is an elevation of a calendering-roll embodying my invention. Fig. 2 is a cross-section of same, and Fig. 3 is an end elevation. 7o

A is the shaft or mandrel and has the annular grooves B'.

B is the calender-ing roll or cylinder, and O O are the metal heads or collars for supporting the fibrous cylinder in position upon the mandrel. To hold the collars in position,

I place in the grooves B two semiannular rings F and shrink upon them the ring G. The cylinder B is made substantially like a tube and is formed in that shape under heavy hy- 8o draulic or other pressure upon the mandrel. D represents the cotton, andE the eXcelsior. It will be seen from an examination of Fig. 2 that the excclsior is uniformly commingled or entwined with the cotton fiber. As the cylinder B wears down it will always present the same character of surface, but when worn down it must be removed and replaced by a new cylinder. It will thus appear that the necessity of uniformity in the cylinders or 9o rolls is most 'important and can be secured' when the construction herein set out is followed.

I do not confine myself to any particular lo ishing or oalendering body composed of a fine thread-like Vegetable fiber such as cotton and eXcelsior in a greatly coarser form uniformly intermingled and Compressed into a Solid form.

In testimony of which invention I have lierer 5 unto set my hand.

JAMES BUTITERWORTH. Vitnesses:

R. M. HUNTER, R. M. KELLY.

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