Improvements in Machines for Cutting Wadding, Paper, Felt, Cloth, Leather, and other similar Materials.
Year: 1890

page_text: .
Date of Application, 4th Dec., 1990
Complete Specification Left, 4th Sept., 1891-Accepted, 10th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Machines for Cutting Wadding, Paper, Felt, Cloth,
Leather, and other similar Materials.
I, JAMES THORNLEY of Charlesworth in the County of Derby, Coachbuilder,
do hereby declare the nature of this invention to be as follows:-
This invention relates to machines for cutting wadding, paper, felt, cloth, leather,
and other similar materials.
In a machine constructed according to these improvements, the material is cut
between two rotating circular knives of which the upper one rotates at a con-
siderably higher speed than the other. The lower knife is preferably mounted in
a bench resembling an ordinary saw bench, and with its upper edge protruding
through the table between two feeding bowls which are rotated at about the same
speed as the knife. The upper knife is fixed upon a spindle mounted above the
table and in such a manner that its cutting edge works against and a little below
the cutting edge of the lower knife. Both of these knives are dished and they
are so arranged that their concavities face the cutting plane.
One or both the knives are adjustable. I prefer however to have the lower
knife only adjustable, and I arrange for this by mounting its spindle in adjustable
bearings or by other known and suitable means. In this case the feeding bowls
are mounted upon sleeves rotating in fixed bearings, the inner diameter of the.
sleeves being larger than the diameter of the knife spindle which passes through,
them, thus allowing for the adjustment.
I may drive the spindle of the lower knife and the feeding bowls from a second
motion shaft which is driven by a belt and conical pulleys so that the relative
speeds of the knives may be changed at will, as for example for cutting a different.
material.
The material to be cut is simply passed between the rotating knives which
cleanly shear it at a comparatively high speed and with a small expenditure of
power.
Dated this 2nd day of December A.D. 1890.
WILLIAM E. HEYS,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machines for Cutting Wadding, Paper, Felt, Cloth,
Leather, and other similar Materials.
I, JAMES THORNLEY, of Charlesworth in the County of Derby, Coachbuilder,
do hereby declare the 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 :-
This invention relates to machines for cutting wadding, paper, felt, cloth, leather
and similar materials.
In a machine constructed according to these improvements, the material is cut
between two rotating circular knives of which the upper one rotates at a con-
siderably higher speed than the lower. The lower knife is preferably mounted in
a bench resembling an ordinary saw bench, and with its upper edge protruding
through the table between two feeding bowls which are rotated at about the same
speed as the cutting part of the knife. The upper knife is fixed upon a spindle
mounted above the table and in such a manner that its cutting edge works against
Union 8.17

page_text: and a little below the cutting edge of the lower knife. Both of these knives are
dished and they are so arranged that their concavities face the cutting plane.
One or both of the knives is or are adjustable. I prefer however, to have the
lower knife adjustable, and I may arrange for this by mounting its spindle in
adjustable bearings or by other known and suitable means. In this case, the
feeding bowls may be mounted upon sleeves rotating in fixed bearings, the inner
diameter of the sleeves being greater than the diameter of the knife spindle which
passes through them both, thus allowing for the adjustment. I may drive the lower
knife spindle and the feeding bowls from a second motion shaft which is driven by
a belt and cone pulley from the first motion shaft so that the relative speeds of the
knives may be varied at will, as for example, for cutting a different material.
The material to be cut is simply passed between the rotating knives which
cleanly shear it at a comparatively high speed and small expenditure of power.
The accompanying drawings illustrate in what manner my said invention may be
carried into practical effect.
In these drawings-
Figure 1 is a plan of a machine constructed according to these improvements,
the table top being removed in order to shew that portion of the machine which
lies below; and,
Figure 2 is a vertical transverse section.
In each of the figures similar letters of reference are employed to denote similar
details of construction.
A is the upper knife spindle which carries the knife B. C are the fast and loose
driving pulleys; D a pulley from which the first motion shaft E is driven by means
of a belt passing around the pulley D and the larger pulley F on the first shaft ;
and G is a cone pulley on the first shaft driving by means of a suitable belt, a
similar cone pulley on the second shaft I. The lower knife J is mounted on the
spindle K which is driven from the second shaft I by means of a belt passing
around the pulleys L M, of which L is fixed upon the second shaft, and M upon
the knife spindle. The feeding bowls N N are fixed upon the two sleeves or hollow
shafts OO mounted in the bearings PP and driven by means of belts passing
around the pulleys QQ fixed upon the hollow shafts OO and the pulleys RR
fixed upon the second shaft I.
The bearings S S of the knife spindle K may, for the purpose of adjustment, be
mounted upon the adjustable frame T which can be raised and lowered by the
screw U. This frame is pivoted at V and its position, together with that of the
bearings SS is indicated at the lower point in full lines, and at the higher point
in dotted lines.
The upper knife B is mounted on the over-hung spindle A and is carried by
the bearing W in which is firmly screwed or secured the tube X having an
internal diameter larger than that of the spindle. This tube extends nearly to
the knife and has a bearing formed within it at the knife end for the spindle.
When in use the upper knife may be protected by the guard Y Figure 2.
None of the belts by means of which motion is transmitted to the various shafts
and spindles, are represented in the figures since their use is obvious and their
representation would have made the drawings more obscure.
It will be understood that the knives are not deep dished, but only sufficiently
so to ensure a clean shearing contact between their edges and absence of contact
elsewhere.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-

page_text: (2). In a machine for cutting wadding paper felt cloth leather and other similar
materials, two dished knives constructed arranged and operating substantially as
hereinbefore described with reference to the accompanying drawings.
Dated this 1st day of September A.D. 1891.
WILLIAM E. HEYS,
Agent for the Applicant.