AN IMPROVED MACHINE FOR CUTTING PAPER, CARDBOARD, CLOTH, AND SIMILAR MATERIALS
Year: 1880

page_text: LETTERS PATENT to Arthur William Lovell Reddie, of the Office for Patents,
66, Chancery Lane, in the County of Middlesex, Patent Agent, for an Inven-
tion of "AN IMPROVED MACHINE FOR CUTTING PAPER, CARDBOARD, CLOTH,
AND SIMILAR MATERIALS." A communication from abroad by Johann August
Heinrich Meyer, of Dresden, in the Kingdom of Saxony.
PROVISIONAL SPECIFICATION left by the said Arthur William Lovell Reddie
at the Office of the Commissioners of Patents on the 26th October 1880.
ARTHUR WILLIAM LOVELL REDDIE, of the Office for Patents, 66, Chancery Lane,
in the County of Middlesex, Patent Agent. "AN IMPROVED MACHINE FOR CUTTING
PAPER, CARDBOARD, CLOTH, AND SIMILAR MATERIALS." [A communication from
abroad by Johann August Heinrich Meyer, of Dresden, in the Kingdom of Saxony.]
The object of this Invention is to provide a machine for cutting paper, cardboard,
and other similar materials in an easy and expeditious manner.
The machine consists of two upright pillars or frames standing up from a
horizontal base plate, and provided with two parallel oblique guides in which the
knife beam and knife may be caused to move up and down.
The mechanism for thus moving the knife beam and knife consists of a lever
which is pivotted at one end to one of the upright pillars above mentioned. This
lever and the knife beam are connected by a link rod. The free end of the lever is
traversed by a pin or bolt forming the pivot for another lever. A boss on this
second lever is partly furnished at its periphery with teeth taking into teeth, which
are formed at the upper end of one of the pillars or frame. These teeth on the
pillar or frame constitute a sector rack of teeth of an elliptical form.
The teeth on the boss of the second lever are so arranged excentrically to the
pivot pin on which, it moves, that if the position of this second lever be reversed, a
varying motion will be imparted to the knife beam and knife through the link rod
above referred to, such motion being an accelerated one at the beginning and
decreasing towards the end of the motion of the second lever, whereby the cutting

page_text: through of a layer of cloth, cardboard, or paper, which is placed underneath a press
beam as usual, will be accomplished with ease.
The said press beam is capable of being moved vertically by means of rods which
connect the press beam to a cross rod. A two armed lever is connected at one end
to the said cross rod, and at the other to a screw, which may be raised or lowered
by means of a hand wheel. By these means the press beam may be lowered and
raised as required.
The knife, after cutting the layer of cloth or paper underneath the press beam,
enters into a strip of wood or other suitable material, which is placed in a slot or
groove of the base plate. This plate is arranged to be moved horizontally, so that
the strip of wood or other material may be moved therewith. This movement of
the plate is effected by a hand winch and screw, which screw passes through a
socket situate on the underside of the base plate, and which is provided with an
internal thread corresponding to the screw.
This shifting of the base plate with its attachments has for its object to present
to the knife as often as may be necessary a new part of the face of the strip of wood
for the purpose of cutting all parts of the layer equally smooth.
In order to determine the dimensions of the material to be cut, the apparatus is
provided, as in ordinary paper cutting machines, with a guide or stop, which may
be shifted according to a scale provided for this purpose.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Arthur William Lovell Reddie in the Great Seal Patent Office on
the 26th April 1881.
ARTHUR WILLIAM LOVELL REDDIE, of the Office for Patents, 66, Chancery Lane,
in the County of Middlesex, Patent Agent. "AN IMPROVED MACHINE FOR CUTTING
PAPER, CARDBOARD, CLOTH, AND SIMILAR MATERIALS." A communication from
abroad by Johann August Heinrich Meyer, of Dresden, in the Kingdom of Saxony.
The object of this Invention is to provide a machine for cutting paper, cardboard,
and other similar materials, in an easy and expeditious manner. The construction
and arrangement of this apparatus will be understood on reference to the
accompanying Drawing, in which Fig. 1 is a front elevation and Fig. 2 a cross
section thereof taken on the line A, B, of Fig. 1.
The machine consists of two standards or frames C, C¹, standing up from a
horizontal base plate D, and provided with two parallel oblique guides E, E, in
which the knife beam h and knife o are caused to move up and down and give a
shearing cut to the material brought under its action.
The mechanism for thus moving the knife beam and knife o consists of a
lever connected to the knife beam 7 by the link rod k, one end of the said lever
being pivotted at a to the top of the standard C above mentioned, and the other
end of the lever i carrying a transverse pin or bolt q, which forms the pivot pin or
fulcrum for another lever f, by which the cutting mechanism is operated. This
second leverf is enlarged at its pivotted end and is furnished with teeth taking
into other teeth which are formed on the upper extremity of the standard C¹.
These teeth on the standard ( constitute a sector rack of teeth of an elliptical
form.
The teeth on the enlarged end of the lever fare so arranged excentrically to the
pivot pin q on which it moves that on reversing the position of this said lever a
varying motion will be imparted to the knife beam h and knife o through the link
rod k above referred to, such motion being an accelerated one at the beginning and
decreasing in speed towards the end thereof, whereby the cutting through of a
layer of cloth, cardboard, or paper, which is placed underneath the press beam e as
usual, will be accomplished with ease.
By this arrangement of mechanism it will be seen that the knife o will first be
rapidly brought down to its cutting position, and that as the shearing cutting
action of the knife takes place the speed of descent will be gradually lessened, but
the leverage brought to bear upon the knife beam h and knife o by means of the
leverf will be correspondingly increased. The press beam e is moved vertically by
means of the hand wheel b and double armed lever d¹, c, the said lever being
pivotted to the underside of the base plate D.
The longer arm thereof d' is connected to the rod e¹, which is securely attached
to the press beam e by the rods d, d, and the shorter arm c of the said lever is
connected with the hand wheel b through the screw a, which screw may be raised
or lowered by turning the said hand wheel b.
By these means the pressure to be exerted by the press beam e upon the material
to be cut may be accurately determined. A portion n of the base plate D is made
moveable, and within a longitudinal shallow recess or depression formed therein a
strip of hard wood or other suitable material is fitted for the purpose of providing
a suitable surface for the knife blade o to cut upon. The base plate D is slotted to
allow of this plate n, together with its longitudinal recess fitted with the strip of
hard wood or its equivalent, being moved horizontally, so that a fresh surface of
the wooden strip may be presented to the cutting edge of the knife o as often as

page_text: desired, whereby the material which is submitted to the action of the knife will be
cut of uniform smoothness throughout.
The horizontal movement of the plate n is effected by a hand winch and screw m,
which screw m passes through a bracket n¹ pendent from the underside of the
plate n, the said bracket n¹ being provided with an internal thread corresponding
to that of the screw m.
In order to determine the dimensions of the material to be cut the apparatus is
provided, as in ordinary paper cutting machines, with a backing plate or stop p,
which may be shifted according to a scale provided for this purpose.
It will be obvious that the rate of descent of the blade o at its different
positions may be varied by changing the form of the teeth on the lever fand
standard C¹.
Having now set forth the nature of the said Invention of "An Improved
Machine for Cutting Paper, Cardboard, Cloth, and similar Materials," as com-
municated to me by my foreign correspondent, and explained the manner of
carrying the same into effect, I wish it to be understood that under the above in
part recited Letters Patent I claim,―
First. A machine for cutting paper, cardboard, cloth, and similar materials
constructed and operating substantially as herein shewn and described.
Secondly. The means substantially as above described with reference to the
Drawing for imparting a variable speed to the knife of a cutting machine, and
for applying increased power to the knife at any period of its descent.
In witness whereof, I, the said Arthur William Lovell Reddie, have hereunto
set my hand and seal, the Twenty third day of April, in the year of our
Lord One thousand eight hundred and eighty one.
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