Improvements in Paper Cutting Apparatus.
Year: 1899

page_text: Date of Application, 30th Oct., 1899
Complete Specification Left, 30th July, 1900-Accepted, 1st Sept., 1900
PROVISIONAL SPECIFICATION.
Improvements in Paper Cutting Apparatus.
We, JOHN WHITE, of the Firm of James Bertram and Son (Limited), Leith
Walk Foundry, in the City of Edinburgh, Engineer, and ROBERT BRODIE,
Engineer, in the employment of said Firm at above address, do hereby declare
the nature of this invention to be as follows:
-
This invention relates to revolving paper cutting machines in which
the paper from the roll or web travels continuously while being cut into sheets,
and it has for its object to make provision whereby the speed of the revolving
cutter may be readily varied in order to cut the paper into sheets of any size
desired, whilst dispensing with the use of the expansion pulleys heretofore
used for that purpose.
cross
For
In its general construction the improved machine may be of the ordinary type
or as described in the Specification filed with the Application for Patent No.
G197 of 1899, but preferably the lower shaft which usually carries the expansion
pulley and regulates the feed, receives its motion from the leading in roll shaft
by means of a belt and pulleys which are made changeable to provide for con-
siderable change of the length of sheet to be cut.
the smaller
variations of the length of sheet to be cut we drive the revolving
drum carrying the
cut knife, from this lower shaft carrying
the change pulley, through a vertical shaft and conical friction wheels
or flat discs fitted on these shafts, a cone or disc on the lower shaft being fitted
in frictional contact with a like cone or disc on the lower end of the vertical
shaft whose upper end is in like manner fitted with a cone or disc in contact
with a cone or disc on the revolving cutter shaft. One or more of the cones
or discs is or are fitted to slide on a feather on its shaft so that it may be brought
nearer to or further from the centre of the shaft which is driven by it or drives
it, and the position of the movable cone or disc relatively to that in contact
with it determines the length of the sheet to be cut. The sliding movement
of the cone or disc may be effected by a lever and handle or by a screw shaft
fitted with a hand wheel, whilst close contact of the friction surfaces may be
ensured either by springs or by gravity.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
at Vincent Street, Glasgow, Agent for the Applicants.

page_text: improvements in raper Cutting Apparatus.
We, JOHN WHITE, of the Firm of James Bertram and Son (Limited), Leith
Walk Foundry, in the City of Edinburgh, Engineer, and ROBERT BRODIE,
in the employment of said Firm, 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 revolving paper cutting machines in which
the paper from the roll or web travels continuously while being cut into sheets,
and it has for its object to make provision whereby the speed of the revolving
cutter may be readily varied in order to cut the paper into sheets of any size
desired, whilst dispensing with the use of the expansion pulleys heretofore
used for that purpose.
The invention is illustrated by the accompanying drawings Figure 1 being an
elevation from the feeding in end and Figure 2 a side elevation of that part of
a paper cutting machine to which the improvements are applied.
In its general construction the improved machine may be of the ordinary
type or as described in the Specification of Letters Patent No. 6197 of 1899,
but preferably the lower shaft A which usually carries the expansion pulley and
regulates the feed, receives its motion from the leading in roll shaft B by means
of a belt C and pulleys D, E, which are made changeable to provide for consider-
able change of the length of sheet to be cut, the leading in roll shaft B being
driven from the main driving gear (not shown) in the usual manner. For the
smaller variations of the length of sheet to be cut we drive the shaft F1 of the
revolving drum F carrying the cross cut knife G, from this lower shaft A carry-
ing the change pulley E, through a vertical shaft H and conical friction wheels I,
J, K, L, or fat discs fitted on these shafts FA and H, the cone or disc I on
the lower shaft A being fitted in frictional contact with a like cone J or disc on
the lower end of the vertical shaft H whose upper end is in like manner fitted
with the cone K or disc in contact with a cone L or disc on the shaft F¹ of the
revolving cutter drum F. One or more of the cones or discs is or are fitted to
slide on a feather on its shaft so that it may be brought nearer to or further
from the centre of the shaft which is driven by it or drives it. (In the present
instance the cone I is thus fitted on its shaft A), and the position of the movable
cone or disc relatively to that in contact with it determines the length of the
sheet to be cut. The sliding movement of the cone or disc I may be effected
by a lever and handle or as shown by a screw shaft M fitted with a hand wheel N
and actuating a fork 0 engaging a sleeve P on the shaft A, whilst close contact
of the friction surfaces may be caused either by springs Q, R, or by gravity.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed we declare that what
we claim is:-
1. In machines for cutting paper from a web or roll travelling continuously
the improved means herein described for varying the speed of the revolving
cutter in order to cut the sheets to any desired size.
2. In machines for cutting paper from a web or roll travelling continuously,
the combination with the usual revolving cutter of a friction cone or disc on one
end of the cutter shaft, a friction cone or disc gearing therewith fitted on the
upper end of a vertical shaft and pressed into engagement by means of a spring,
a cone or disc on the lower end of the vertical shaft held in gear by a spring or

page_text: by gravity with a cone or disc on the end of the shaft ordinarily carrying the
expansion pulley and driven from the leading in roll shaft substantially as and
for the purpose described.
Tiated this 28th day of Tuly 1900
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow, Agent for the Applicants.