Improvements in Calendering, Mixing, and Grinding Machines for Use in the Manufacture of India-rubber.
Year: 1899

page_text: Date of Application, 20th Feb., 1899
Complete Specification Left, 20th Nov., 1899-Accepted, 17th Feb., 1900.
Improvements in Calendering, Mixing, and Grinding Machines for
Use in the Manufacture of India-rubber.
1.
JOSEPH THOMAS WICKS, Ferndale, Tamworth Road, Gravelly Hill, Birmingham,
India Rubber Expert and Factory Manager, do hereby declare the nature of
this invention to be as follows:-
Improvements in calenders, and grinding, and mixing machines for india-
rubber.
My improved calender consists of a new and useful arrangement of the rolls;
heretofore calender rolls have been placed vertically.
I purpose using calenders for india-rubber, having 2 vertical rolls in front
and 1 roll placed horizontally behind the top roll; or 2 rolls placed vertically
and the top roll at any convenient angle; or rolls placed vertically at a con-
venient distance apart and the third roll placed midway in front; rolls to be
fitted with either or both, even and friction gear, i.e. to run at the same
different speeds.
or
My improved mixing rolls consist of 3 rolls instead of 2 as heretofore.
What I aim at is a double grinding or double mixing action while the various
plastic and other materials are in the mixing mill. This means an increased
rate of production at far less labor and cost.
There are 2 vertical rolls placed at any convenient distance apart and one roll
placed midway in front.
1.
Such a mixing mill as here described could be used as a refining mill by india
rubber manufacturers.
My improved grinder or crusher of waste products consists of 3 rolls instead
of the usual 2 rolls. Similar in design to my improved mixing mill but with
fluted rolls or rolls cut on face with any design suitable for the necessary tear-
ing, cutting or crushing of old waste products. For fine grinding the rollers
would be plain face.
Dated this 18th day of February 1899.
Improvements in Calendering, Mixing, and Grinding Machines for
Use in the Manufacture of India-rubber.
I, JOSEPH THOMAS WICKS, of Ferndale, Tamworth Road, Gravelly Hill, Bir-
mingham, India Rubber Expert and Factory Manager, do hereby declare the
Paine &

page_text: nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
The present invention has reference to machines for mixing india-rubber and
other materials, and also to calenders for making rubber sheet, and, finally, for
grinding old used or waste rubber, and other fibrous materials, into crumb for
re-manufacturing the same.
The object of the invention is to economize labour and time in carrying out
such operations. These operations are usually carried out in a machine com-
prising a pair of rollers, into the bite of which, the rubber or other material to
be treated is regularly fed.
For grinding and mixing, the rollers are geared to run at different speeds,
but for calendering, they run both at the same speed.
In the accompanying drawing, a machine, embodying my invention, geared for
grinding and mixing, is shewn but the gear wheels being changed, the machine is
equally applicable for calendering.
Fig. 1 is a front view of the machine embodying my invention.
Fig. 2 is a transverse section thereof; and
Figs. 3 are diagrams which will presently be referred to.
The machine consists of a metal framing A, having bearings for two-
rollers B, B¹, arranged a suitable distance apart, on parallel axes, one above the
other. There are also bearings for a third roller, C, so arranged as to engage
equally with the other two rollers. The bearings for the roller C are adjustable
in a horizontal direction, for the purpose of regulating the bite, and the
rollers B and B₁ may be made adjustable vertically, if desired.
The adjustment of the roller C, in the machine, as illustrated, is effected by
means of screws d d operating upon sliding blocks D, which are mounted in
guides E in the framing A, and which carry the bearings for the roller C.
The roller C is driven by means of a gear wheel C', and the rollers B and B¹
are driven through the roller C by pinions c and b 6, the diameter of the two
latter being proportioned to to the diameter of the pinion c, according to the
difference of speed (if any) desired between the rollers.
The material to be treated is fed into the bite of the rollers B and C, and
from thence it passes to the bite of the rollers C and B¹, thereby being doubly
acted upon in one operation of the machine.
In the machine drawn, the rollers B and B are shewn in the same vertical
plane, with the roller C at the front.
In Figs. 3, other positions are diagrammatically suggested; for instance, the
rollers B and C are in the same vertical plane, and the rollers B and C in the
same horizontal plane, or, again, the roller B may be in a different horizontal
plane from the roller C.
The rollers are, as usual, hollow, and provided internally with steam heating
space.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
:-
In machines for mixing india-rubber with other materials, for calendering
indiarubber, and for grinding rubber waste and fibrous products, the employ-
ment of three rollers geared together and arranged to cooperate, substantially
as described with reference to the accompanying drawings.
Dated this 20th day of November 1800
NEWTON & SON,
Agents for the Applicant.