Improvements in or appertaining to Machinery for Cutting Bagging and other Textile Fabrics.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in or appertaining to Machinery for Cutting Bagging
and other Textile Fabrics.
I, ROBERT SHACKLETON, of Borough Paper Mills, Bradford in the County of
York, Paper Manufacturer, 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 improvements in or appertaining to circular and band
saws or knives for cutting bagging and other textile fabrics, and its object is to
provide an arrangement adapted to feed the material to the saw or knife and at the
same time open out or separate the cut portions so as to reduce the friction.
For this purpose I employ two feed rollers arranged to project from below
through the table on each side of the saw or knife and mounted upon separate shafts
revolving at a suitable angle to each other and to the saw or knife and pressure
rollers are fitted above said feed rollers.
To fully describe my invention reference is made to the accompanying sheet of
drawings forming a part of this Specification in which similar letters of reference
indicate corresponding parts in each of the figures.
Figure 1, represents a plan view of such parts of a circular saw or knife with the
top removed as are necessary to illustrate the application of my improvements
thereto.
Figure 2, is a sectional elevation of the same on the broken line a, b in the
former figure.
Figure 3, is a side view of the same with the inclined top T of the table in
position.
Figure 4, is a plan view of a portion of a band saw or knife table with the knife
in section and my improvements applied thereto..
The feed rollers A, a are preferably fluted to increase their hold on the material
to be cut and are mounted on the inclined shafts B, B the inner ends of which
shafts are fitted in bearings formed in the standards C and C¹ and their outer ends
mounted in bearings D, D fixed on the frame E of the saw table. Pulleys F, F
are secured on the outer ends of the shafts B, B and are connected by the driving
ropes G, G to the pulleys H, H on the counter shaft J fitted below and driven by
the belt K from the saw spindle L. Any well known device may be employed to
keep the ropes G, G sufficiently tight if owing to variations in the atmosphere it is
found necessary.
The standards C and C₁ are fixed as close to the saw M as possible and C is
secured by its foot d to the cross piece of the table frame E whilst C¹ is fixed by
its foot e to the cross piece E³. This arrangement is employed as it complies with
the ordinary construction of saw tables formed so that the saw may be removed
from its spindle whilst the latter is in position. The pressure rollers N, N are
mounted on studs i, i projecting from blocks jj fitted between the vertical guides ", "
and r, r formed on the standards C and C so that such pressure rollers are free to
rise and accommodate themselves to different thicknesses of material. Springs or
weights may be employed to increase the pressure between the rollers N and the
feed rollers but I find the weight of the rollers N sufficient for general purposes.
When the machine is in operation and the front end of the material to be cut is
passed between the feed and pressure rollers the motion of these rollers feeds the
material against the knife edge of the saw and owing to the inclination of the axes
of said rollers to each other and to the saw spindle the material as it is cut is opened
out so as to clear the side faces of the saw and thus reduce the friction.
In Figure 4 the pressure roller N and feed rollers beneath them are arranged in

page_text: a similar manner in relation to the saw and table as the feed and pressure rollers
previously described. The band saw or knife M' is shown in horizontal section.
Instead of employing cylindrical feed and pressure rollers I may employ conical
or taper rollers and incline the shafts B, B and the studs i, i to enable such rollers
to be employed.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare what I
claim is:
The combination with a circular or band saw or knife for cutting textile fabrics,
of feed rollers arranged beneath and to project through the table top and mounted
so that their axes are inclined to each other and to the saw, substantially as herein
shown and described and for the purpose specified.
Tlated this 20th 1
f
bon 1901
DRACUP & NOWELL,
Bradford, Agents.