New or Improved Device for Cutting Cardboard, Paper and the like.
Year: 1899

page_text: Date of Application, 10th Nov., 1899-Accepted, 10th Feb., 1900
COMPLETE SPECIFICATION.
New or Improved Device for Cutting Cardboard, Paper and the like.
I, WALTER HENRY MARSH, of 14, Marquess Road, Canonbury, London, N.,
Clerk, 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 a new or improved device for cutting cardboard, paper
and the like, and is designed with the object of providing a handy and simple
combination device which shall be capable of being effectively employed as a
paper-cutter for slitting the leaves of periodicals, papers and books, and as a knife
for cutting sheets of cardboard or paper and the like.
In order that this my said invention may be the more readily understood and
carried into practical effect, reference is hereby made to the accompanying sheet
of illustrative drawings, wherein :-
Fig. 1, is a plan view of the blade of my device, shewn independently.
Fig. 2, a side elevational view thereof.
Fig. 3, is a perspective view of the blade.
Fig. 4, a sectional view through line A-B of Fig. 1.
Fig. 5, is a plan view of the case.
Fig. 6, a side elevational view thereof.
Fig. 7, is a section through line C-1) of Fig. 5, while, Fig. 8, is a perspective
view of the complete device with the blade in its extended position.
Referring to the drawings, wherein like letters of reference indicate correspond-
ing parts throughout the several figures, a represents a substantially rectangular
steel plate having a tempered razor-like cutting edge along one of its smaller
sides and extending for a part of one of the longitudinal edges, as indicated by a¹.
The lower edge of the blade a is flanged on each side of the blade as at as, the
upper edge of said blade also being double flanged in a similar manner as at a³,
such flanges being thinner than the body of the blade a.
The said blade a fits within a casing & shaped to conform to the shape of the
said blade, the upper and lower sides of said case being flanged to form grooves b',
in which the said upper and lower flanges a³, a³, on the blade are adapted to
slide in a longitudinal or lengthwise direction.
One of the ends of the case b is of open form to allow the sharpened edges of
the blade to be projected through such open end, as will hereafter be more
particularly referred to.
On the blade a near the end thereof farthest from the cutting parts, I provide
a projecting atop c, which slides in a vertical slot in the said blade.
The said stop e projects through a lengthwise guide-slot in the case b, such
guide-slot having its ends at right angles in the main part of such guide-slot.
In operation, the projecting-stop is slid upward out of the right angled rear
end of the guide-slot d and the blade a then slid toward the open end of the
case 6 in order to cause the cutting edges a¹ of such blade to project from the
said case b, whereupon the stop c is then pushed upward or downward (whichever
is desirable) into the forward angular end of the guide-slot d, in order to maintain
n

page_text: the said blade in its looked position necessary for using the device as a paper-knife,
card-board-cutter, print-trimmer or the like.
I preferably project the upper part or back of the blade a at its forward end,
as shewn by a, in order to provide a rest for the operator's finger to bear upon
to obtain the pressure necessary for trimming a print sheet of card-board or the
like.
In this event, the case is formed of a slightly greater length than the blade a,
in order that the said extension at may not project beyond the front edge of the
said case when the blade is slid back within the case, out of use.
It is essential that the flanges a³, a³, on the upper and lower sides of the blade a
should fit snugly within the grooves b' of the case b, in order that there may be no
lateral movement between the said blade and the case when the device is in use.
In order to render the device more effective when employed as a paper-knife, or
leaf-slitter, I may, if desirable, reduce the thickness of the blade a upon the back
at the forward end thereof, for a suitable part of its length, and dispense with the
flanges on the back of such reduced portion.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
The new or improved device for cutting cardboard, paper and the like, consisting
in a steel blade having the front edge and part of the lower edge tempered and
sharpened to a razor-edge, the upper and lower sides of such blades being flauged
on each side, said flanges being reduced in thickness, said blade having a project-
ing stop mounted in a slot in said blade and adapted to have a vertical sliding
movement therein; in combination with a case conforming to the shape of the
blade, said case having grooves in its upper and lower sides to fit snugly around
the flanges on the blade and to allow said blade to have a lengthwise sliding
movement within such case, said case having a lengthwise guide-slot with right-
angled ends in one of its greater sides through which projects and works the said
projecting stop on the blade, all arranged, combined and operating, substantially
as described and as illustrated by the drawings.
Dated this 10th day of November 1899
HUGHES & YOUNG,
55 & 56, Chancery Lane, W.C., Agents for Applicant.