Improvements in Paper Ripping and Winding Machines.
Year: 1892

page_text: Date of Application, 14th Jan., 1892
Complete Specification Left, 14th Oct., 1892-Accepted, 10th Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Paper Ripping and Winding Machines.
I, DAVID NOBLE BERTRAM, of St. Katherine's Works, Sciennes, Edinburgh,
in the County of Midlothian, North Britain, Engineer, do hereby declare the
nature of this invention to be as follows:-
This invention which relates to improvements in paper ripping and winding
machines, consists of additions to and modifications of the machine described in my
former application for Patent No. 4018 of 6th March, 1891.
In accordance with my present invention I cover or otherwise provide the
pressure roller, which is mounted above the winding reel, with india-rubber prefer-
ably of soft india-rubber so as to take up or accommodate any slight inequality of
the reel, and also to give greater adhesion between the reel and the said roller so
as to drive the slitting knives in such a manner as to ensure against "slip."
Also provide means whereby the depth of the slitting knives in the reel is
automatically regulated so that no parts of the knives or knife blocks touch the reel
except the knive's cutting edges.
This being effected by mounting the knives on a spindle which is carried in suitable
journals provided on the outer ends of two suitably shaped rocking levers mounted
on the movable carriages of the machine; the inner ends of the said rocking levers
working against suitably shaped bars or their equivalent which bars by their shape
automatically regulate the depth of the knife edge according to the varying
diameter of the reel. These bars are hung on pins or studs at their upper ends and
work against eccentrics or cams at their lower ends. These cams are mounted on a
cross shaft which is provided with one or more hand levers so as to enable the knives
being withdrawn from the reel when desired.
Also in order to regulate the horizontal position of the pressure roller I provide
one of the suspending bands or chains on the movable carriages with an adjusting
screw preferably a right and left handed screwed hand wheel and screws.
My said invention also provides means whereby the weight of the carriages and
roller is gradually relieved from the winding reel as it increases in diameter so as to
leave the wound reel looser on the outside than inside; this being effected by con-
necting two or more pivoted levers and weights to the main balance weights in such
a manner as to provide an automatic varying weight on the reel.
To ensure of the reel being more efficiently wound than hitherto I preferably
arrange or mount the slitting knives in such a position that the web of paper has
been wound round nearly a half or more of the reel before it is slit or cut.
Dated this 13th day of January 1892.
JOHNSONS,
115, St. Vincent Street, Glasgow, Petitioner's Agents.
COMPLETE SPECIFICATION.
Improvements in Paper Ripping and Winding Machines.
I, DAVID NOBLE BERTRAM of St. Katherines Works Sciennes, Edinburgh in
the County of Midlothian North Britain, Engineer, 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 which relates to improvements in paper ripping and winding
machines, consists of additions to and modifications of the machine described in the
Specification of my former Patent No. 4018 of 6th March 1891.

page_text: -u-order-that-my-said-invention be readily understood and easily carried into
effect will proceed to describe the same with reference to the accompanying
drawings,
Figure 1 of which is an end elevation and Figure 2 a part front elevation of my
improved ripping and winding machine.
In accordance with my present invention I may cover or otherwise provide the
pressure roller G which is mounted above the winding reel F, with india rubber
preferably soft india rubber, so as to take up or accomodate any slight inequality
of the reel and also to give greater adhesion between the recl F and the said
roller G so as to drive the slitting knives M in such a manner as to ensure against
'slip."
EL
Also I provide means whereby the depth of the slitting knives in the reel is
automatically regulated so that no parts of the knives or knife blocks touch the reel
except the knive's cutting edges.
This is effected by mounting the knives M on a spindle m, which is carried in
suitable journals provided on the outer ends of two suitably shaped rocking levers N
mounted on the movable carriages of the machine; the inner ends of the said
rocking levers N are provided with rollers a which work against, though preferably
in, the grooves of suitably shaped bars or their equivalents P which bars by their
shape automatically regulate the depth of the knives edges according to the varying
diameter of the reel F. These bars are hung on pins or studs p at their upper ends
and connected at their lower ends to the rods p' which are connected to small
cranks ² carried on a horizontal spindle p³ which is provided with one or more
hand levers p and locking devices so as to enable the knives M to be withdrawn
from the reel F when desired.
Also in order to regulate the horizontal position of pressure roller G I provide
one of the suspending bands or chains on the movable carriage 2 with an
adjusting screw preferably a right and left handed screwed hand wheel and screws
as shewn. The main balance weights H in this case are arranged to slide up and
down the back of main frames A as shown.
The said slitting knives M may in some cases be driven by means of gearing R
from the pressure roller G there being an intermediate wheel r adjustably carried
by the pivoted or jointed arms, both of which tend to keep said wheel in gear
with the other two as their centres alter owing to the increase or decrease of the
reel F; when the knives M are driven by gearing they are preferably driven at a
higher rate of speed than the reel F so as to ensure better cutting by the knives M.
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 whạt 1
claim is:
1st. In paper ripping and winding machines, the arrangement by which the
depth of the slitting knives in the winding reel is automatically regulated by the
bars P Figure 1.
2nd. The arrangement by which the pressure roller may have its horizontal
position regulated substantially as hereinbefore described and shewn in
Figures 1 & 2.
3rd. The arrangement of the hand levers p' Figure 1, for lifting the slitting
knives clear of the web.
4th. The general arrangement and combination of the various parts constituting
my improved paper ripping and winding machine substantially as and for the
purposes hereinbefore described and shown in the drawings.
Dated this 13th day of October 1892.
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.