Improvements in Metallic Edgings for Paper, Cardboard, and other like Boxes.
Year: 1895

page_text: Date of Application, 19th June, 1895-Accepted, 20th July, 1895
COMPLETE SPECIFICATION.
Improvements in Metallic Edgings for Paper, Cardboard, and other
like Boxes.
I, MORITZ HEINEMANN of Bielefeld, in the Empire of Germany, 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:
This invention relates to means for connecting together the ends of the metal
binding strips of metal edged cardboard and like boxes.
For mounting the edges of boxes of pasteboard and the like with metal angle
plates, metal strips M.with straight or scolloped edges are used, which, as, shown, in
front elevation and section in Figures 1 and 2 have double rows of holes Leach
with 4 slanting teeth m on the lower side, which are forced into the box sides by
pressure.
The usual commercial length of the strips is about 2 feet (30 inches) and
therefore they can without loss only be used for a certain number of edging lengths,
whilst for all other lengths useless waste is caused, which for instance, cutting up
the 30 inch strip into 4 inch lengths there is two inches waste, into 9 inch lengths
there is 3 inch waste, into 8 inch lengths 6 inch waste and so on.
To avoid such losses the long strips must be so joined as to possess, at the
connecting point, the same characteristics as at any other, consequently the joint
must be concealed and clinch the box sides.
This is attained by making the teeth of the one strip end (at the joint) grip the
holes of the other strip end and be therein clinched.
In the present strips the, toothed pairs of holes are continued, to the ends.
If therefore, the slanting teeth of the one strip end are set straight, inserted in
the holes of the other and again set aslant, a joint alike unto V in the plan and
section Figures 6 and 7, is formed;; there the strips M and M' lie one on the other,
and the teeth m and m¹ in one another. On pressure of the joint, the teeth m and m¹
enter the sides of the box, and, each end is therein separately clinched.
The straight setting of the teeth before inserting them in the holes, and slanting
them afterwards is very troublesome. This is avoided with the strips as shown in
Figures 4 and 5. In these, at each extremity of the strips, one, or more, pairs, of
holes are omitted.
In order to join such strips, the plain ends are placed in a suitable contrivance
for holing, with their said ends so one on the other that the edges do not overhang.
Then they are holed, and, if necessary, the teeth m and m¹, thereby formed and
interlaced, are set slanting. A joint V such as shown in Figures 6 and 7 is thereby
formed, provided that at each, end one pair of holes is omitted, whereas if two pairs
of holes are left then the joint Vappears as in the section Figure 8.
If at the joint only one of the strips is to be toothed then each strip has at one
end a toothless pair of holes, Figures 1 and 2 and the other end either has a pair
of holes with straight teeth as Figures 1 and 2 or is left unpierced as Figures 4
and 5. In the former case the straight teeth of the one end are inserted in the
toothless holes of the other, setting, if necessary, the latter aslant from the bottom,
whereas in the latter case the holeless end of the one strip is placed in a holing
contrivance and the teeth, formed by the holing of the upper strip are forced
through the holes of the lower strip, and, if necessary, can be set aslant.

page_text: In both cases the joint V formed is alike unto the joint shown in Figure 3 in
which the teeth m¹ pass through and grip the sides of the holes M and, on pressure,
clinch the joint to the box sides.
Although I have heretofore described that the teeth which effect the junction
are slanting yet I have found that it is not always requisite that they should be so,
as the same may be formed straight without minimising the efficiency of the
connection.
Figure 9 shows bow the little straight teeth m, lay hold of the toothless hole
of M; in Figure 10 the one straight tooth m, of m¹ lays hold on the straight
tooth m of the strip M, whilst in Figure 11 two straight teeth of both strips lie in
one another, and in Figure 12 the straight tooth m' of M' lays hold of the oblique
teeth m of the strip M.
The mode of connecting Figure 9 is easily effected, if the oblique end teeth are
set straight, and inserted in the toothless terminal holes. Likewise Figures 10 and 11
are made with the contrivance by holing together which, however, must then be
arranged for holing with straight teeth.
It is manifest that the strips which are joined by straight teeth only have
externally the same appearance at the point of connection as at the other places,
whereas on the side where the small teeth are locked, the straight teeth of the
joint are visible.
It will also be seen that the connection by straight teeth is not inseparable like
that by oblique teeth, but is detachable.
It is to be noted that for the sake of clearness all the diagrams are enlarged.
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 :-
--
First. Uniting the holed strips M and M' which are used to mount the edges of
boxes of pasteboard and the like with metal angle plates, straight or scallop-edged,
by providing the same with two rows of holes L, which on the lower side, have
slanting triangular teeth m, so that the teeth m of the holes L of the one end of
the strip grip through the holes of the other, and prevent the separation of both
strips, for the purpose of imparting to the strip at the joint V, the same appearance
as at the other parts.
Secondly. The metal strips suitable for effecting the joint referred to in the
preceding claim, having one or more pairs of holes in both ends thereof, omitted
substantially as described and set forth in Figures 4 and 5.
Thirdly. The metal strips suitable for effecting the joint referred to in the first
claim in which one end has a toothless pair of holes, whilst the other end has, either
a pair of holes with straight teeth m or is without holes, substantially as described
and set forth in Figures 1 and 2.
Fourthly. The metal strips suitable for effecting the joint referred to but having
straight teeth, substantially as described and set forth in Figures 9, 10, 11 and 12.
Dated this 17th day of June 1895
MORITZ HEINEMANN,
By Henry Skerrett,
24 Temple Row, Birmingham, Agent for Applicant.