New or Improved Apparatus for Cutting or Shearing Paper and other materials.
Year: 1892

page_text: Date of Application, 29th Nov., 1892
Complete Specification Left, 29th Mar., 1893-Accepted, 29th Apr., 1893
PROVISIONAL SPECIFICATION.
A New or Improved Apparatus for Cutting or Shearing Paper and
other materials.
I, ROBERT WILLIAM WILTON, of 49 Albany Street, Regents Park, in the
County of Middlesex, Architect, do hereby declare the nature of this invention to
be as follows:-
The object of this invention is the construction of an apparatus for cutting
paper, leather, textile fabrics, and other materials, such apparatus being especially
applicable to cutting off newspapers when printed from a continuous roll of paper.
Now, according to this invention I provide two shear blades or knives, each
blade having two cutting edges. Each blade is fixed in a reciprocating frame,
these frames I cause to move vertically or horizontally by means of cams, cranks,
and connecting rods, or other suitable means.
The reciprocating frames are pressed together by means of spring actuated
rollers so as to ensure the knives or shears being kept in contact. The knives
being set at an angle with each other, as one frame moves up while the other moves
down the cutting action is similar to that of a pair of shears or scissors. I prefer
to operate the reciprocating frames by means of cams which will cause the blades
or knives to pass each other quickly, and then give a period of rest, while the
material to be cut is fed forward through the opening left the required distance.
then rapidly make the next cut and so on.
'It will be understood that as each knife frame reciprocates and the shears or
knives are doubled edged, a cut is made each time the knives or shears cross each
other, thus enabling the material being cut, to be continuously fed forward at a
uniform rate, the biades being nearly parallel, the cutting is almost instantaneous.
This apparatus is particularly applicable to cutting printed sheets from a con-
tinuous roll of paper.
Dated this 29th day of November 1892
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
A New or Improved Apparatus for Cutting or Shearing Paper and
other materials.
I, ROBERT WILLIAM WILTON, of 49 Albany Street, Regents Park, in the
County of Middlesex Architect, 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 :-
The object of this invention is to construct an apparatus for cutting, paper,
leather, textile fabrics and other materials such apparatus being especially
applicable to cutting off printed sheets from a continuous roll of
paper.
Now according to this invention I provide two shear blades or knives each blade
having two cutting edges.
Each blade is fixed in a reciprocating frame which I cause to move vertically
or horizontally by means of cams, cranks, and connecting rods or other suitable
means.
And in order that my said invention may be fully understood I will proceed to
explain the same with reference to the accompanying sheet of drawings in which
'' 017

page_text: Figure I represents elevation of an apparatus constructed according
invention for cutting off printed sheets such as newspapers from a continuous roll
of paper.
Figure 2 is section of same.
Figure 3 plan of same.
Figure 4 is a modification of same adapted for cutting paper shavings.
The same letters denote the same parts in all the figures.
a is the frame of the machine, b and c the knives or shears fixed in reciprocating
frames de.
The frame d is connected by links ff to levers gg these levers are keyed to
sleeves and oscillate on the shaft i, the levers 9. g, also have at one end a
roller engaging with grooves in the cams jj which are keyed to the cams shaft k.
The frame e is also connected by links to the levers m. m which are keyed to
the shaft i, rollers on the end of the levers engaging with grooves in the cams n n
which are keyed or otherwise secured to the shaft k, o o are rollers attached to a
shaft p. turning in bearings 7. q, rr are similar rollers secured to a shaft s rotating
in bearings the pressure of the rollers rr on the frames d and e is adjusted by
means of springs t t the compression of which is regulated by the screws uu and
hand wheels v v. w is the table to carry the paper to be cut under the knives.
It will be evident from the shape of the cams that the blades are caused to
rapidly pass one another and remain stationary until the next sheet is printed when
another quick cut is made, the blades again remain stationary until another sheet
is printed and so on the cams imparting a rapid motion to the knives or blades
with a period of rest between each cut.
As each blade has two cutting edges two sheets are cut off during one revolution
of the shaft that is to say when the frame e is depressed and the frame d raised
and also when the frame e is raised and the frame d'depressed.
If the blades b and c are parallel or nearly so the cutting is practically
instantaneous.
xx are fast and loose pulleys to receive a driving belt it will however be found
in practice preferable to drive the cutting apparatus by means of a pitch chain or
other positive means of transmission from the printing machine.
Figure 4 shews a modified form of the apparatus adapted for cutting paper or
other material into small shreds or shavings, the frames d and e being reciprocated
by means of the cranks A. A. B B, and connecting rods C. C. and D D.
respectively.
FF are pedestals or plummer blocks in which the crank shaft N rotates.
The frames d and e may in this case move in fixed guides the knives being
adjusted by screws attached to the frames in the usual way.
According to a further modification of my invention I may use two single edged
fixed knives with their edges towards each other and one double edged knife
reciprocating in contact therewith, the material to be cut being fed forward between
the cutting edges of the fixed knives and cut off at each reciprocation of the
moving knife.
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 :-
I. In an apparatus for cutting paper and other materials the combination of two
reciprocating blades or knives, each blade or knife having two cutting edges with
a device for reciprocating the same for the purpose stated.
II. In an apparatus for cutting paper and other materials the combination of
two double edged knives or blades b and c secured to reciprocating frames d and e
with the cams jj and n n substantially as described and for the purposes stated.
111. In an apparatus for cutting paper and other materials, the combination
with two double edged reciprocating knives operated by cams giving a period
of rest between each reciprocation of pivoted levers and connecting rods for

page_text: transmitting the motion from the cams to the reciprocating knives all substantially as
described with reference to Figures 1, 2, and 3 of the accompanying drawings.
IV. In an apparatus for cutting paper and other materials the combination of
reciprocating frames carrying double edged knives or blades with cranks and
connecting rods for operating the said frames, all substantially as specified and
illustrated at Figure 4 of the accompanying drawings.
Dated this 29th day of March 1893.
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C., Agent for the Applicant.