Apparatus for Grooving Pasteboard and the like.
Year: 1895

page_text: Date of Application, 7th Aug., 1895-Accepted, 21st Sept., 1895
COMPLETE SPECIFICATION.
Apparatus for Grooving Pasteboard and the like.
I. JOSEF TEMLER, of Warsaw, in the Empire of Russia, and 30 to
34 Tabernacle Street, Finsbury Square, in the County of London, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to novel apparatus for grooving cardboard and other
similar soft material, in which apparatus the severance of the strip cut out in
order to form a groove, from the bottom of such groove-is effected without the
employment of any special device.
The central feature of this apparatus is a roller-shaped tool comprising a series
of circular cutters arranged at short distances apart.
As will be seen from the accompanying drawings the improved apparatus may
be constructed in two forms.
In the example shown in Figs. 1 and 2, circular cutters s are formed on, or in,
a solid disc or roller a by the provision, in the periphery of the same, of a number
of grooves such as a'.
In the arrangement of which Fig. 3 is a section, there are interposed, between
the rotary cutter s, consisting of thin plate steel, intermediate discs or washers a'
of a smaller diameter than the cutter discs. The whole series of cutters and
intermediate discs, together with terminal discs a² of increase thickness (the edges
of which are also made in the form of cutters), are placed upon a common
spindle and tightly compressed thereon by means of nuts m.
This grooving tool, whether carried out in the former or in the latter form, is
revolvably secured in a support b which is adjustable, both horizontally and
vertically, upon a cross piece c.
A feeding roller d serves to feed along the cardboard or other material that is
being scored or grooved, underneath the cutter tool, and also to press such
material into contact with the cutting edges.
The operation of the improved groove cutter is as follows:-
The cutting edges s and a² enter the substance of the cardboard or other material
to be grooved to a predetermined depth corresponding to that to which the cutters
have been set or adjusted; and divide the cardboard, to that extent, or depth, into
a number of narrow strips. Each of these strips is compressed between the two
corresponding cutter edges s so firmly that, as the rotary cutters travel along, they
carry away with them the strips which they have cut out, so that their thorough
and neat severance from the bottoms of the grooves may in all cases be relied
upon. These strips, then, after having been cut out at the edges and severed at
their bottoms or bases, in the manner stated, leave behind the required grooves.
To enable the grooving mechanism to be usefully employed again, the cardboard
strips, which becomes fixed between the cutters s, during the cutting operation,
should be removed. This may he effected by means of a rimer such as e, assuming
the shape of a comb, the teeth of which are adapted to engage in the intermediate
spaces between the cutters & and remove the strips in the manner illustrated in
Fig. 1.
The grooving mechanism may, however, be so constructed as to be capable of
automatically getting rid of the strips of cardboard, without the employment of a
rimer or special tool of any kind.
For this purpose, it should be constructed as shown in Fig. 4 which is a cross
section of the arrangement in question.

page_text: T
"
The intermediate discs or washers a¹ here have the same outer diameter as the
cutters. Their central perforations, however, are wider, than those of the cutters
so that they are capable of a certain displacement upon the spindle between the
cutters & which they keep apart. And to enable them to be so displaced, the series
of discs is so secured between the nuts m as to retain a certain amount of "play
between them. Owing to their adjustability, the washers a' are forced upwards
by the cardboard operated upon to the same extent to which the cutting discs &
enter the depth or thickness of the cardboard. The intermediate washers or
discs a consequently assume an eccentric position in relation to the cutters s, as
illustrated in Fig. 5, and as a result, a portion of their periphery will always project
above the upper half of the circumference of the cutter. This eccentricity of the
discs a¹, in combination with the rotary motion of the cutters have the joint effect
of forcing the cardboard strips out from between the cutters & by the very pressure
of the eccentric dises a¹, as illustrated in Fig. 5.
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―
Apparatus for cutting grooves in cardboard or other soft material, mainly
characterized by the provision of a roller-shaped tool, such as a, adapted to be
arranged over a feeding roller and to be adjusted both vertically and horizontally,
and comprising a series of circular knives or cutters arranged at a short distance
from each other; it being optional to make such tools cousist of either.
1. One solid disc or roller, in the periphery of which the rotary knives or
cutters s are formed by the provision of grooves such as a¹; or
2. The required number of separate rotary knives or cutters s, or a", with the
interposition between them of discs or washers a¹ of a reduced diameter;
both the cutting discs and the intermediate discs being mounted upon a
common spindle x and firmly compressed thereon by nuts m; or
3. A suitable number of separate cutting discs, such as s, or a³ with the inter-
position between them of washers or discs a¹ of the same diameter, but
having larger central perforations than the cutter discs and capable of a
certain displacement between the latter.
Dated the Seventh day of August 1895.
NEWNHAM BROWNE,
Agent for the Applicant.