Improvements in Devices for Grooving or Indenting Cardboard, Millboard, Wood, and such like.
Year: 1895

page_text: Date of Application, 21st Oct., 1895-Accepted, 28th Deo., 1895
COMPLETE SPECIFICATION.
Improvements in Devices for Grooving or Indenting Cardboard,
Millboard, Wood, and such like.
We, MAX SCHUBERT and OTTO SCHUBERT of the Gesellschaft für Cartonagen-
Industrie, 644 Reinickendorferstrasse, Berlin, Germany, Manufacturers, 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 device for forming grooves or indentations of an
uniform depth in cardboard, millboard, pasteboard, wood, and such like.
And in order that our said invention may be properly understood we have
hereunto appended an explanatory sheet of drawings, whereon,
Fig. 1 is a side view of the indenting or grooving device.
Fig. 2 is a front view of the device with a part sectioned on the line *—* of
Fig. 1.
Fig. 3 shows in plan, side elevation, sectional plan, perspective and front views
the extractor part of the device.
Fig. 4 shows in side and plan views a modified form of the extractor.
Fig. 5 shows in front and side views the central circular cutter.
Fig. 6 shows in plan and section a piece of cardboard with cuts in it.
The device consists of a frame a which has fitted to it two supports or carriers b, b¹,
each having a bearing opening or hole at its lower end and formed internally to
receive the actual cutting or indenting part of the device, which consists of three
circular knives o, c, d, and of a wedge-shaped extractor e whose object is to shave
off, open out, and guide away the strips, (Figs. 1, 2 and 6) left by the three
cutters so that the device when working will not be choked up by shavings.
Fitted in the bearing holes of the carrier b, b', is an axle g' made with a
rectangular hole 9 longitudinally through it and upon this axle is mounted the
cutting wheels d, o, c'. The wheel d is fitted in the contre arid at each side of it
are fitted the cutters a, c', which are mounted on right and left hand screw threads
out on the axle in such manner that by turning the axle one way or the other they
can be brought closer together or moved further apart as desired.
In order that the cutters c, c', may be properly secured and prevented from
moving laterally, after adjustment, on the sorewed spindle g they are made with
small holes h, A, which correspond with holes 4" made at each side of the carrier b
so that by inserting suitable pins or pegs through those holes the rotation of those
cutters can be prevented.
The width of the groove to be cut is regulated by inserting a key into the
rectangular hole g of the axle g¹ and then turning the axle to either right
or left
The cutters c, d, o' in their action make three scores or outs (see Fig. 6) betweon
which two strips, of the material are left of uniform width and depth and these
strips are shaved off and removed by means of the extractor e which is fitted olose
behind the cutters.
The extractor e, as shown at Fig. 3, has a rectangular shank & which can be
insorted in a recess in the carrier & land clamped in position by a sorew H. A
screw is provided for giving the proper vertical adjustment to the extractor.
The foot of the extractor is provided with two sharp wedge shaped blades n, m, the

page_text: one n for shaving off the strips f, f, and the other m for opening them out or
forcing them apart. Two guide tongues 1, 2, which project forward slightly in
advance of the blades m, n, into the spaces o, p, (Fig. 2) between the outtors are
also provided for guiding away the shaved off strips f,, in the direction of the
arrow Fig. 1 so that they can be easily removed and prevented from choking the
outters.
The device is employed in the same manner as ordinary cutters.
Having now particularly described and ascertained the nature of our said inven-
tion and in what mannor the sainc is to be performed, we declare that what we
olaim is :-
1. The combination with a device for cutting grooves in cardboard, pasteboard,
millboard, wood, and such like of an extractor for shaving off, opening out, and
guiding away the strips, substantially as herein before set forth.
2. In a device for indenting or grooving cardboard, pasteboard, millboard,
wood, and such like, the combination of two outer circular cutters, a third central
cutter for dividing the strip left between the outer cutters, and an extractor for
shaving off, opening out, and guiding away the divided strip, substantially as
hereinbefore described with reference to the drawings annexed.
3. In combination, the axle g' with its right and left hand screw threads, the
central cutter d fixed thereon, and the two outer adjustable cutters o, o', mounted
on the screw threads, substantially as hereinbefore described and shown on the
drawings annexed.
4. The extrnator e having the two wedge blades m, n, arranged perpendicularly
the one to the other and the two guide tongues 7, substantially as heroinbefore
described with reference to the drawings annexed.
Dated this 19th day of October 1895.
H. D. FITZPATRICK,
70 Wellington Street, Glasgow, Agent.