US101532A - Improvement in friction calender rolls for paper - Google Patents

Description

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'l WILLIAM H. SOLEY AND GEQRGE STITES, 0F PHLADELPHIA, PENN- SYLVANIA. Y

Letters Patent No. 101,532, dated April 5, 1870.

The Schedule referred to in these Letters Patent and making ofthe same.

Be it known that we, WILLIAM H. SOLEY and. GEORGE STITES, both ofthe city and county of Philadelphia in the State of Pennsylvania, have invented a new and useful Improvement in Friction Calender's for Calendering Paper, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings which make part of this specification, and in which- Fignre 1 is a view in elevation of our improved machine, and

Figure 2,- a vertical transverse section of the same at the line a: x of g. 1.

Our invention relates to that class of calendering machines in which the rollers are driven by frictional contact; and

Its object is so to combine with a set of calendering-rolls, a set of driving-rolls, of different diameters, that' the planishing-roll may be driven by `ijrictional contact, through the rolls of the other set, and move at a speed ditlerent from that due to its relation to the rolls of its own set.

In the accompanying drawings two sets of rolls are shown as mounted in suitable housings A A', and arranged endto end. j

Power is communicated, from any suitable prime mover, to a pulley, B, mounted on a shaft, b, which carries two rolls O Cof different diameters, mounted insnitable bearings in the housings A A'; these rolls are by preference made of chilled cast-iron.

A roll, D, of hard-paper, by preference, is mounted in the housings A above, and in contact with the roll C, and two similar rolls, D-D2, in the same horizontal plin, are mounted in the housings A', above the rol A single roll may be 'substituted for the two rolls Dl D', but we iind the use of two rolls more advan- Y tageons in insuring proper frictional contact.

A 'planishing-roll, E, by preference of chilled iron, is mounted in movable journal-boxes in the housings A, so as to permitit to adjust itself to the thickness of the sheet passing between it and 'the roll D, and

is pressed down upon the roll D by weighted levers e, or screws, and a. driven roll, E', is similarly mounted in the housings A', above the paper rolls I)x D2.

Y The planishing-roll E and the driven roll E are connected through a coupling-shaft, F, and universal joints f f', so that the two rolls E E will revolve together. l.

By reason of the greater ratio of difference in diameters of the rolls O* and E', as compared with that of the rolls4 C and E, the intermediate paper-rolls D1 D2, acting merely to insure suicient friction to drive the roll E', and also to drive itin the same direction as the lower roll C', we are enabledv to drive the planishing-roll E by frictional contact at a higher speed than that due to its frictional contact with the roll D, thereby obtainingI a differential motion, which we require for the' more perfect calendering of the paper, in a three-roll calender, between the planishing-roll E and paper-roll D.

It' the roll E is released from frictional contact with the rolls Dl D2 by relaxing or removing the weights from its levers, the planishing-roll E would be driven by its frictional contact with the roll D, and revolve at a nearly uniform speed therewith, as in the ordinary way.

By means of the universal joints ff, in the coupling-shaft F, we compensate for any difference in the axial planes of the two rolls,'caused either by their dilerence in diameter, or by the wearing of the rolls, or by the working of the housings, &c.

lVe do not broadly claim ca-lemieriug rolls of metal and paper.

lVe claim as our invention- 1. The combination 0I' a set of calendering-rolls, a set of driving-rolls in separate housings, and a universal joint connection between the upper rolls, substantially as and for the purpose set forth.

2. .lhe combination ot'rthe driving-shaft, drivingrolls,y paper-rolls, planishing roll`, driven roll, and jointed coupling shaft all these parts being consti-noted tooperate substantially as hereinbet'ore set forth.

In testimony whereof we have hereunto subscribed our names.

WM. H. SOLEY. GEORGE STITES.

Witnesses:

J. SNowDEN BELL, WM, B. DAYTON.

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