Improvements in Apparatus for Cutting, Slitting, and Grooving . Cardboard and other Materials.
Year: 1894

page_text: Date of Application, 11th June, 1894-Accepted, 14th July, 1894
COMPLETE SPECIFICATION.
Improvements in Apparatus for Cutting, Slitting, and Grooving
. Cardboard and other Materials.
A communication from EMIL SALTZKORN, Consul, and LUDWIG NICOLAI,
Manufacturer, both of Dresden, in the Empire of Germany.
1, ALFRED JULIUS BOULT, of 323, High Holborn, in the County of Middlesex,
Chartered Patent Agent, 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 apparatus and tools for cutting, slitting, and grooving
cardboard or pasteboard, and comprises a knife with a blade formed of a piece of
thin steel of any desired length. This knife has the following advantages, viz. ;-
It always remains sharp, it sharpens itself in the act of cutting, and only at intervals
does it require to be adjusted to compensate for wear. The thin, springy, flexible
blade or cutter can be used in the various different ways.
In the accompanying drawings
Figure 1 is a tool for cutting and slitting card and pasteboard, leather, and the like,
by hand;
Figure 2 is a view of the same fitted for use with a machine in which the knife or
blade is mounted in an adjustable holder secured to the cross-bearer of the machine,
opposite to a similar holder carrying a guide roller for the card or pasteboard,
leather, or other material to be treated.
Figures 3 and 4 represent a machine-tool for grooving, wherein two steel knives
or blades are set in a holder with their lower ends or edges situated at an angle to,
and almost in contact with each other, the guide-roller (carried by the opposite
holder) being capable of adjustment in the line of cut;
Figures 5 to 7 show a similar machine-tool, wherein the knives or blades, in
conjunction with a plate interposed between them are mounted near and parallel
to each other, the guide roller being arranged midway between the lines of cut,
and, behind the knives an inclined or horizontal wedge-shaped knife or cutter is so
placed that it removes the slip, cut by the two thin blades out of the material
operated upon.
In the hand-tool shown in Figure 1, for cutting and slitting card or paste-board
and other materials, the steel blade a is fixed slant-wise between two cheeks b by
means of the bolt or screw c. Both of the cheeks bare fitted in the same handle.
The cutting edge is at the lower end of the blade, and, as that wears, compensation
is obtained by a readjustment of the blade, the screw being slackened and tightened
up again for the purpose; whereby the cutting edge is continually being renewed,
until the blade is reduced to a short stump.
The same applies also to tools for cutting, slitting and grooving, when operated
On the cross-beam e of
by machine-power in the otherwise well-known manner.
the machine, just above the feed-roller fare formed, on either side, dovetailed
grooves in which the blocks g may be adjusted in a horizontal direction, and fixed
On these are
in any required position by means of the bolts or screws h.
mounted the tool and roller holders or carriers k arranged to be adjustable in
a vertical direction by means of the screwed spindles im with preferably winged
heads l.
One of the holders k carries the roller n which, in conjunction with the feed-
roller serves to move the card or paste-board, or other material to be cut by
the knife; the other holder k carries the cheeks o pressed together by the bolt or
screw p, and embracing between them the blade or cutter a as shown in Figure 2.

page_text: In the grooving-tool represented in Figures 5 to 7, there are, as shown, two
knives or blades a a, between which is located a plate r, having a thickness equal
to the width of the groove to be cut, for the purpose of obtaining and maintaining
the requisite distance between the cutters. As however the strip between the
cutters is not thereby completely detached, it becomes necessary to provide for its
removal, which may be done by any suitable known means; such as, e.g. a flat or
wedge-shaped blade or cutter placed behind the knives a and carried by a downward
prolongation of the knife-holder k.
In the grooving-tool shown in Figures 3 and 4, the ends of the two blades a a
are set at an angle to each other by the insertion of a wedges between the forked
ends of the holder k, which form the jaws, the said wedge s being secured by the
screw t to the holder-arm v; and by its being screwed down the ends of the interposed
steel-bands are pressed into the required position.
Having now particularly described and ascertained the nature of the said inven-
tion, as communicated to me by my foreign correspondents, and in what manner the
same is to be performed, I declare that what I claim is ;-
1. In a tool for cutting slitting or grooving cardboard pasteboard or the like the
employment of a knife or blade formed of thin steel whereof the end or cutting
edge is continuously renewable by a readjustment of the blade in proportion to wear
so as always to present a cutting edge of the same sharpness.
2. The complete device for cutting cardboard or other material substantially as
-described and illustrated in Figure 1 of the accompanying drawings.
3. The complete device for cutting cardboard or other material substantially as
described and illustrated in Figure 2 of the accompanying drawings.
4. The complete device for grooving cardboard or other material substantially as
described and illustrated in Figures 3 and 4 of the accompanying drawings.
5. The complete device for grooving cardboard or other material substantially as
described and illustrated in Figures 56 and 7 of the accompanying drawings.
Dated this 11th day of I
100
W. P. THOMPSON & BOULT,
Agents for the Applicant.
W. P. THOMPSON & BOULT,
Agents for the Applicant.