IMPROVEMENTS IN APPARATUS FOR THE MANUFACTURE, MEASURING AND CUTTING OF PAPER
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by Moses Clark, Andrew. Masson, and
Robert Scott at the Office of the Commissioners of Patents on the 9th May
.
1883.
MOSES CLARK of St Mary Cray in the County of Kent and ANDREW MASSON
and ROBERT SCOTT both of Battersea in the County of Surrey "IMPROVEMENTS
IN APPARATUS FOR THE MANUFACTURE, MEASURING AND CUTTING OF PAPER"
This invention has for its object improvements in apparatus for the manufacture
measuring and cutting of paper. and refers particularly to a paper cutting machine
on to which the paper may be run directly off the paper machine. The invention
however applies to other paper cutting machines. In the paper cutting machine
used at present for the above purpose called a single sheet paper cutter the paper
is measured upon a reciprocating drum and the length of sheet is determined by
the amount of travel given to the circumference of the drum the paper being held
to the drum by two small rolls. At high speeds it is found that the rolls do not
grip the paper sufficiently close to the drum and the slip causes inaccuracy in the
length of sheets. In our invention we substitute for the drum measuring arms at
the end of which a small roll or cross bar is carried across the machine, the length
of swing of which roll or bar determines the length of sheet. Any desired length
of swing is given to the roll or cross bar from the driving shaft by means of
adjustable levers and cranks or similar appliances. If necessary for very long
sheets two small rolls or cross bars may be applied instead of a single roll or bar as
above described.
While the paper is being measured by the above measuring arm it is held-fast at
the end next the cross cut knives by two beans hereinafter called beams N° 2 one
beam being fixed to the frame and the other made moveable so as to grip the paper.
securely between the two beams and relieve it alternately. Motion is given to the
moveable beam from the driving shaft by means of adjustable rods levers and
excentrics or other appliances. When the length of sheet required has been
measured off by the measuring arms the moveable beam referred to above relieves
the paper and allows the exact amount measured to be drawn forward to the cross
cut knives by a pair of rolls or other means. In order to prevent any further
length of paper than that measured being drawn forward another pair of beams
called hereafter beams N° 1 are employed and they grip the paper fast when the

page_text: correct length has been measured off and hold it until beams N° 2 again grip the
paper preparatory to another sheet being measured (the previous sheet having been
cut off by the cross cut knives) beams N° 1 now open and release the paper and so
on continuously. While the paper is prevented from coming forward by beams N° 1
the slack paper is taken up by a dancing roll or other arrangement the paper being
fed continuously through the machine and ripped into widths if required in the
ordinary manner.
In order to meet the necessity for cutting sheets of paper at an angle other than
a right angle we have invented an apparatus which we attach to our cutting
machine as before described...
After the paper has passed through beams N° 2 it is carried between the rolls
which draw it forward towards the cross cut knives for cutting a right angle sheet
instead however of being passed between these cross cut knives and cut the paper
is carried up over the cross cut knives and is led through another pair of rolls
placed considerably higher. The angle cross cut knives are carried on a beam one
end of which turns on a pivot the other end, is brought to any desired position by
means of a screw worked by a hand wheel below or other suitable appliance, thus
should it be desired to cut the paper to any desired angle the beam mentioned
above is brought to the correct position by means of the screw and the paper is
cut to the desired angle by the cross cut knives. Motion is given to the cross cut
knife and gripping.board & by levers and connecting rod which rod passes through
the pivot of the beam thus the cross cut knives cut equally well at any angle of
the beam.
W
The invention also, refers to straining apparatus for straining paper pulp and
more particularly to flat horizontal strainers in which the action is obtained by
means of a moveable bottom to the vat underneath the strainer plates, the
invention however may be applied to other strainers.
In order to increase the effect of the moveable bottom upon the strainer plate
and thus increase the efficiency of the strainer our invention provides for the
admission of air between the moveable bottom and strainer plates this we accom-
plish by means of suitable pipes regulated by means of small cocks so that air may
be admitted in greater or less quantities to the vat between the moveable bottom
and strainer plates.