Improvements in or appertaining to Paper Boxes.
Year: 1889

page_text: Date of Application, 12th Nov., 1889
Complete Specification Left, 11th Aug., 1890-Accepted, 1st Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in or appertaining to Paper Boxes.
I, ERNST PAUL LEHMANN of Brandenburg on the Havel in the Kingdom of
Prussia, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to a new and useful improvement in collapsible boxes of
stiff paper, card-board or other suitable pliant material; the purpose of my invention
is to provide a suitable fastening for the closing edges of the folding top, such
fastening being arranged, not only to permit an easy and ready opening and reclosing
of the box, as often as may be desired, but also to effect an air-tight closure
of the box.
The box or package, provided with a folding top of any suitable kind or pattern,
is usually made of one single blank of stiff paper, card-board or other pliant material,
but it might as well consist of soveral pieces jointed to each other by glue or other
suitable means.
The folding top of the box is collapsible according to the predetermined folding
lines prepared in the blank by the usual well known means, and the said top is so
arranged, that two parallel sides of the same, in being folded down, have their free
edges laid side by side, which, being pressed against each other, keep the box closed.
To exert such pressure and to overlap the closing edges, I provide a lap-joint in
connection with one of the closing edges and overlapping the other edge, when
closed; and to said lap-joint I provide or secure a strip of soft, pliant sheet metal,
projecting on both sides of the lap-joint, the projecting ends of said metal strip being
bent to hold the two closing edges, with the overlapping lap-joint, firmly together.
The said projecting ends are unbont, as often as the box is to be opened.
Instead of securing or rivetting the strip of sheet metal to the lap-joint, I prefer, in
some cases, to use motal clamps loosely applied, to clasp the two closing edges and
the overlapping lap-joint firmly against each other, or, in some cases, an elastic band
of rubber or the like may be found sufficient to keep the three parts pressed up in
close and air-tight contact with each other.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or appertaining to Paper Boxes.
I, ERNST PAUL LEHMANN of Brandenburg on the Havel in the Kingdom of
Prussia, Manufacturer, do hereby declaro the nature of this invention and in what
manner the saine is to be performed, to be particularly described and ascertained in
and by the following statement:—
My invention relates to certain improvements in collapsible boxes of stiff paper,
card-board or other suitable pliant material, the purpose of my invention being to
provide a suitable fastening for the closing edges of the folding top, such fastening
being arranged not only for permitting an easy and ready opening and reclosing of
the box, as often as may be desired, but also to effect an air-tight closure thereof.
In the accompanying drawings =
Figure 1 represents a blank of stiff paper, card-board or other suitable material,
cut or stamped and scored or prepared with folding lines to form a collapsible box of
squaro cross section, the improvement of my invention being fitted to said blank.

page_text: gure 2 is a front view, and
Figure 3 a side view of the box provided with the improved fastening, but shown
in a position where the box is not yet closed.
Figure 4 is a cross section through the improved fastener of the edges of
the hox.
Figures 5, 6 and 7 illustrate modifications of my invention as hereinafter
described.
The box or package may suitably be made of one single blank A of stiff paper,
card-board or other suitable pliant material, as shown in Figure 1, and it may be
provided with a folding top of any suitable pattern, the blank shown in Figure 1
giving only one form of the scoring or folding lines, the general method of forming
collapsible boxes or packages from blanks being known. The box or package might
as well consist of several pieces or parts, jointed to each other by glue or other
suitable means, but the method of forming the body, bottom and top of the box
from one integral blank A, as shown in Figure 1, appears to be the most
advantageous.
The folding top of the box is collapsible according to the predetermined folding
lines prepared in the blank by the usual well known means, and the said top is so
arranged, that two parallel sides of the same, say B and C of the pattern of Figure 1,
in being folded down have their free edges laid side by side, as shown in Figure 3.
The box will be firmly closed and the entrance of air between the two edges prevented,
if the said edges are firmly pressed against each other. To effect such pressure and
to overlap the closing edges, I provide a lap-joint a in connection with one of the
closing edges, to overlap the other edge, when being closed; and to said lap-joint a
I provide or secure a strip of soft pliant sheet-metal, projecting at bon both
sides of the lap-joint. The lap-joint à may be made integral with the blank A, as
shown in Figure 1, or secured to the edge of the side B in a suitable manner, and
the sheet-metal or pliant strip b may he rivetted or otherwise secured to said lap-joint a,
to line the same on one or both sides.
When the said lap-joint a has been bent down to overlap the two closing edges
of the top, as shown in Figure 4, the projecting ends bb, are bent to hold
the two edges, and the overlapping-joint a firmly together, clamping the same to
each other.
If the folding top of the box or package is desired to be opened, the two projecting
ends of the metal strip b need only be bent back, and the lap-joint a swung from
the closing edges, which are free to disclose the contents of the box.
The operation of opening and closing the box may be as often repeated as desired
without cutting, tearing or breaking any part of the box.
Figure 5 is a top view, and Figure 6 a side view, of another pattorn of folding
top of a collapsible box, in which the two closing edges keep a vertical position and
are firmly clasped against each other by the metal strip b with projecting ends b
the edges in this case are not overlapped, but the lap-joint may as well be applied
with the strip b.
In Figure 7 I have shown another modification consisting of a loose clamp a¹
clasping the two closing edges in the whole width of the box, or several clamps of
smaller size may be put over the edges and bent down to firmly grasp the same.
Instead of the metal band or clamp b¹I apply, in some instances, a rubber or
elastic band which exercises sufficient pressure on the two closing edges, to effect
an air-tight contact of the same with or without simultaneously applying the
lap-joint.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what mannor the same is to be performed, I declare that what I
claim is : -
1. In a collapsible box provided with a folding top, the combination, with one of
the free edges of said top, of a lap-joint a and a metal-strip & secured to said lan-ioint.

page_text: the projecting ends b³ of said strip serving to hold the edges and lap-joint firmly
clasped to each other, substantially as described.
2. In a collapsible box having a folding top, the combination, with one of the
free edges of said top, of a lap-joint a, and a metal clamp or clamps 6' to clasp the
same to the closing edges, substantially as and for the purpose set forth.
3. In a collapsible box having a folding top, the combination, with one of the free
edges of said top of a metal-strip b, the projecting free ends 6' of which serve to
clasp the closing edges of the top firmly against each other, substantially as
set forth.
4. In a collapsible box having a folding top, the combination, with the free edges
of said top, of a clamp or clamps a' or a rubber or elastic band to clasp said edge
firmly against each other, substantially as set forth.
1800
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.