An Improved Process for the Manufacture of Pasteboard Boxes.
Year: 1890

page_text: Date of Application, 4th Nov., 1890-Accepted, 6th Dec., 1890.
COMPLETE SPECIFICATION.
An Improved Process for the Manufacture of Pasteboard Boxes.
I, NEWNHAM BROWNE, of 73, Cheapside in the City of London, Fellow of the
Institute of Patent Agents, do hereby declare the nature of this invention for "AN
IMPROVED PROCESS FOR THE MANUFACTURE OF PASTEBOARD BOXES" which invention
has been communicated to me from abroad by Teodor Remus of Dresden in the
Empire of Germany, 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 process for the manufacture of pasteboard boxes of any
shape which consist of a bottom or cover and a rim or sides.
This process consists of the following operations.
In the first place long strips preferably of continuous or rolled material of the
same width as the side are cut and rolled up. These strips being then passed between
a pair of rollers have a strip of paper attached to them which during this operation
is coated with adhesive material being so applied that the said strip of paper
projects laterally for about two or three millimetres as represented in Figs. 1 and 2 of
the accompanying drawings.
For certain purposes hereinafter specified in which the material for the strips a
requires to be somewhat stouter the pasteboard strip a is cut away on the side opposite
to that on which the paper strip bis applied so as to form a recess or rabbet a¹ as
shewn in Figs. 3. and 4.
The pasted and rolled up strips after drying are cut up into suitable lengths to
form the rims or sides of the boxes.
Sheets or pieces are cut out to a rectangular shape as in Fig. 5. or to a circular,
oval, or other form according to the shape of the box. The ends of a prepared strip
being connected together by metal clamps or other suitable appliances the bottom or
end piece c being cut out to the proper shape is laid inside the projecting edge of the
paper strip 6 or inside the rabbet or recess a¹ as shewn in Figs. 6. and 7. To
obtain greater stiffness the bottom sheet may be formed by pieces of pasteboard placed
together the top piece c being of such a size that it lies upon the edge of the side
whilst the under and smaller piece c' fits into the side as represented in Fig. 8. of
the drawings.
The connection between the bottom piece c and the side a by means of the strip of
paper adhering to the latter is finally completed in the following manner.
The prepared parts of the box Figs. 6 to 8 are placed upon a block n which fits
into the space enclosed by the sides and bottom as represented in Fig. 8 and a die O
which may be of the form represented in Fig. 9 so that it bends inwards the pro-
jecting edges of the paper strip is then brought to bear thereon with considerable
pressure. During this operation the parts o and u are heated. By the action of the
heat in combination with the strong pressure the dry adhesive material on the strip b
is rendered capable of adhesion so that the parts of the paper strip bent down over
the bottom care firmly attached to the bottom and the latter is thereby connected to
the sides a and the parts are thus completely united as represented in Fig. 10.
In the process of attaching the bottom to the sides by stamping it is possible to
impart varied forms to the joint and to the surface of the bottom piece.
When the sides having a rabbet a Figs. 3 4 and 7 are employed, the part of the
rabbet a projecting beyond the bottom c is lapped over the edge of the latter as well
as the paper strip in the stamping process as represented in Fig. 11. An extremely
strong joint is thus made between the sides and the cover or bottom piece.
With this method of making the joint it is possible to dispense with the paper strip b.
without prejudice to the strength, the over lapping part of the rabbet being stiffened

page_text: in the hot stamping process so that it retains the bottom piece c without adhesive
material.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed as communicated to me
by my foreign correspondent 1 declare that what claim is :-
(1) In the herein before described process for making pasteboard boxes.
(2) The preparation of the side breadths in long bands with laterally projecting
adhering paper strips (6 Figs. 1 and 2) or rabbets (a Figs. 3 and 4) and the connection
of the enclosed sides (a ) with the botto:n (c) by means of the projecting part of the
paper slip (b) or of the projecting part of the rabbet (a¹) by bending down and
pressing the two latter between heated dies (o, u).
Dated this Fourth day of November One thousand eight hundred and ninety.