Improvements in Paper Ripping and Winding Machines.
Year: 1892

page_text: 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 relates to improvements in paper ripping and winding machines,
and may form modifications of the machine described in the Specifications of my
former applications for Patents No. 4018 of 1st March 1891 and No. 781 of 14th
January 1892.
In carrying out my invention as illustrated in the accompanying drawings,
Figures 1 and 2 being respectively end elevation and part front elevation, I
provide two or more rigid cast iron frames or checks A, which are provided
with the necessary means for carrying and supporting the various guide or
leading rollers, winding and driving drums, pressing roll trimming and slitting
or ripping knives and their various connections. Also if desired they may be
provided with means for carrying the roll of paper to be trimmed and slit, though
prefer to employ separate standards and frames as hitherto, and as is shown in
the drawings, arranged in such a manner as to permit of the reel of paper B being
adjusted horizontally and vertically.
The paper
after leaving the reel B is caused to pass over the leading
rolls C, C, C, the latter of which leads it to the ordinary trimming knives D,
which are of the usual type, though in this instance, I prefer to drive them
from a countershaft in lieu of from the drum or mainshaft as hitherto. After
the trimmed paper passes the knives D it is fed on to the driving drum E by
means of the adjustable leading roll C³; the said driving drum E being arranged
in such a manner as to wind the paper on the reel, drum, or spools F which in
this machine bears against the top side of said driving drum E, and is carried in
bearings g provided in the top ends of two pivotted or swinging arms G, which
are mounted on the shaft in the usual way; the said shaft g' being provided
with one or more hand levers 2 so as to enable the reel F to be withdrawn from
the driving drum when desired. After the paper has been wound nearly all round
the reel Fit is slit by means of the slitting or ripping knives H, which are
adjustably mounted on the spindle h, the said spindle being carried in bearings
formed in the lower ends of two levers or arms J the top ends of which are
keyed or otherwise secured to a cross shaft K which is carried by suitable
brackets k. The ripping knives H are provided with means whereby they
automatically vary their position according to the size of the wound reel F, this
being effected by means of the lever L which is keyed on the shaft K, and has a
duplicate lever (not shown) preferably of a similar shape and mounted loosely on the
shaft K, inmediately behind the lever L. Both of these levers are provided with
a slot, such as 1, so that they may be bound together in any desired position by
means of the binding screw. The said back or loose lever (not shown) is con-
nected by means of the rod to the one end of a double armed lever L', the other
end of which is operated by a suitable cam M which is mounted on the end of the
shaft in such a manner as to enable the increase in the diameter of the reel F
to cause the knives to automatically take up their required position and at no time
have more than their cutting edges touching the reel of the paper, and at the same
time enable the knives to be lifted clear of the web of paper by means of the hand
levers g.
In order to relieve the reel F of the strain necessary for driving the ripping
knives H I drive them direct from the main shaft N by means of the spur

page_text: wheel P which gears with a spur pinion P¹ mounted on a counter shaft Q
having the centre line in the same line as the cross shaft K, of the ripping knives,
the said counter shaft has mounted at its other end a spur wheel R which gears
into a spur pinion R¹ mounted on the end of the knife spindle thus enabling the
knife spindle to swing and not affect the gearing, also by driving direct I am
enabled to give the ripping knives H any desired rate of speed, and so ensure of
the edges of the paper being cut clean. This counter shaft Q also drives the
trimming knives D by means of the pulleys and band arrangement S.
h
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 :-
1st. In paper ripping and winding machines, the cam M, lever L', hand
lever L, and connections, whereby the depth of the slitting knives in the winding
reel is automatically regulated, substantially as hereinbefore described and shown
in the drawings.
2nd. The hand levers g², and connections, whereby the slitting knives may be
lifted clear of the web.
3rd. The general arrangement, construction and combination of the various
parts, constituting the machine for ripping and winding paper, substantially as
hereinbefore described and shown in the accompanying drawings.
Dated this 20th day of December 1892.
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.