Improvements in Presses for Cutting and Cupping Boxes and Box Lids of Cardboard and the like Material
Year: 1895

page_text: Date of Application 4th May, 1895-Accepted 8th June 1895
Improvements in Presses for Cutting and Cupping Boxes and Box
Lids of Cardboard and the like Material
I WILLIAM TEGGIN of Dickinson Street, Salford, in the County of Lancaster,
Box Manufacturer, 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
My said invention relates to improvements in machines for forming cup shaped
antiles of cardboard and the like materials to be used as shallow boxes oi as ends
or lids foi deep boxes
Such articles hereinafter referred to as lids are formed by pressing discs of paper
or cardbound through a hollow die by means of a plunger
To more fully explain my said invention I append a sheet of drawings to which
reference is hereinafter made
In the said drawings Figure 1 is an elevation partly in section and Figure 2 is
a section to a larger scale of certain details
a is the plunger carried in a slide a' operated in the usual manner by a crank or
excentric
bis a pressure plate carried by slide 1ods b¹ sliding fieely through the slide a'
The said pressure plate is weighted by slabs 263 The pressure plate is raised by
cam excentric or other lifting appliance and falls by its own gravity in advance of
the plunger
Its purpose is to hold the margin of the disc of cardboard against
the upper fice of the hollow die c while the plunger penetrates the die for the
purpose of cupping the dic On the die advancing further it withdraws the disc
from the pressure plate and the cupped lids d are successively pushed through the
die c
Plungers and pressure plates and the means for operating them are well known
and I make no general claim to their use
The weight or load on the pressure plate needs to be varied to suit cardboard of
varying consistency in order that the pre sure plate may hold the disc sufficiently
long for the cupping action to take place and yet release it at the proper moment
to prevent the plunger tearing the centre away from the margin
The object of one part of my said invention is to obtain variation in the load on
the pressure plate by intercepting it in its fall by a weighted lever e one end of
which takes under a projection e¹ on the pressure plate or on a part 2 moving
therewith By varying the position of the weight the checking or balancing
action may be varied within any desired limits In place of a weighted lever a
spiral sping or other cushion whose elasticity can be varied may be used
A corresponding cutting rim f¹
On the descent of the pressure
sever a disc from the sheet of
between the pressure plate and
When such cutting
The object of another part of my said invention is to enable the circulai discs
for the lids to be cut out from a sheet of cardboard and to be dished or cupped
by a single stroke of the plunger a For this purpose I provide the pressure plate b
with an annular rim f having a sharp cutting edge
is secured to the upper part of the hollow die c
plate the joint action of these cutting rims will
cardboard lying between and the disc will be held
the top of the die ready for the descent of the plunger a
rims are used I prefer that the positions of the weighted lever e and the pro-
Jection e¹ be so adjusted that the balancing action of the lever e only comes into
action after the disc has been severed By this means the full effect of the

page_text: loaded pressure plate is used to cut out the disc and the retaining load on the
margin of the disc is regulated by the position of the weighte³ to suit the particular
kind or consisting of paper on cardboard which is used
The die e may be heated by steam or hot water in the usual manner
The table about the lower cutting rim is set at the level of the cutting edge
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 1
claim is
1 In a press the combination of the plunger a the hollow die c and a pressure
plate b whose load is varied during its descent substantially as and for the purpose
set forth
2 In a press the combination with a cupping plunger and die of the pressure
plate b having a projection such as e¹ and a weighted lever e for balancing the
load of the pressure plate substantially as and for the purpose set forth
3 The combination with the plunger and die of a cupping press of the cutting
rings fand f¹ substantially as and for the purpose set forth and shown
4 In a press the combination of the plunger a the hollow die c the cutting
rims the pressure plate b and the means for checking or balancing the
pressure of the latter substantially as and for the purpose set forth and shown
Dated 3rd day of May 1895
ET WHITELOW, A M Inst CE,
70, Deansgate, Manchester, Agent for the Applicant
ET WHITELOW, A M Inst CE,
70, Deansgate, Manchester, Agent for the Applicant