the Corners of Boxes of Wood, Cardboard, Leather, and the like.
Year: 1885

page_text: the Corners of Boxes of Wood, Cardboard, Leather, and the
like.
+
I PETER JENSEN, Fel Inst. P.A of 33 Chancery Lane in the County of
Middlesex do hereby declare the nature of said invention for "IMPROVEMENTS IN
AND CONNECTED WITH ANGLE CLAMPS FOR UNITING THE CORNERS OF BOXES OF
WOOD, CARDBOARD, LEATHER AND THE LIKE (A communication to me from
abroad by Jean Scherbel, Merchant, and Theodor. Remus, Engineer, both of
Dresden, Saxony). to be as follows:-
This clamp is for the purpose of connecting or uniting the corners of boxes of
wood, cardboard, leather or the like in such manner as to afford greater strength
than those heretofore used and without being dearer.
The clamp consists of a thin metal strip which is bent along the middle at
obtuse angles in such manner that the corners run parallel with the sides of the
strip. The central corner or ridge is in the centre of the width of the strip of
metal and the two other corners are intermediate between the centre ridge and the
two sides of the strip.
Angular slits are cut out of the strip along each side of same and these parts are
bent in towards the side of the enclosed angles in the form of claws which point
somewhat towards each other. The length of these claws and their inclination are
such that the angle formed between the inner face of the strip and the claws is
materially smaller than that of a right angle. But these proportions will of course
vary according as the corners of the box form a right angle or not.
The two sides of the box previously formed with their proper bevel along the
edges are placed against each other and on a suitable block which has the proper
angle for the corner of the box.
For fastening the clamp on to the corner of the box to be united thereby a die is
made use of which is cut out V shaped at one end such notch having the same
angle as the aforesaid block. A clamp is placed in the notch and held therein by a
spring on each side. On depressing the die with the inserted clamp the claws are
driven into the sides of the box while the body of the strip will be bent to
the angle of the corner of the box. The springs which first served to hold the
clamp will be forced apart by contact with the sides of the box.
1002

page_text: Improvements in and Connected with Angle Clamps for Uniting
the Corners of Boxes of Wood, Cardboard, Leather, and the
like.
I, PETER JENSEN Fel. Inst. P.A. of 77 Chancery Lane and formerly of
33 Chancery Lane in the County of Middlesex do hereby declare the nature of
this invention a communication to me from abroad by Jean Scherbel Merchant and
Theodor Remus Engineer both of Dresden Saxony and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:—
This clamp is for the purpose of connecting or uniting the corners of boxes of
wood, cardboard leather or the like in such manner as to afford greater strength
than those heretofore used and without being dearer.
Figures 1, 2 and 3 of the accompanying drawings show a clamp in front
elevation and in cross section and Figures 4 and 5 are cross sections illustrating
the form of the clamp respectively while and after having been applied."
."
Figures 6 and 8 are front elevation and 7, 9 and 10 cross section of a
modification and Figures 11. and 12 are cross sections showing the clamp before
and after fixing respectively. Figures 13, 15, 16 and 18 are front elevations and
modifications and Figures 14 and 17 are cross sections of same. Figures 19 and 21
are front elevation and Figure 20 is cross section of another modification.
Figures 22, 24 and 26 are front elevations of other modifications and Figures 23,
25 and 27 are cross sections. Figures 28, 29, 30, 31 and 32 are cross sections of
other forms of clamp.
'
The clamp consists of a thin metal strip a with claws b formed thereon which
are either stamped out of the middle or body of the metal and bent up as shown in
Figures 1 to 3 or formed by bending over the sharp points of the teeth formed
along the sides as shown in Figures 6 to 10, which is produced by stamping both
sides of the plate lengthways as shown in Figure 6.
The claws 6 of both kinds of clamps or claw bindings are in the form of equi-
lateral triangles, the apices of which are so arranged inwardly that those of one
row are opposite to those of the other row. The angle which the claws make with
the surface of the plate a is always smaller than a right angle."
If the clamps or claw bindings are intended for the junction of the edges of
boxes made of cardboard and the like, they are bent in the middle of their breadth
to an obtruse angle so that if two lines were drawn from the points of two claws b
opposite to each other to the apex of this angle they would form a right angle as
shown in Figures 3 and 10' if the sides of the box to be joined are right angled;
but which must be 'larger or smaller according as the box corners with the claw
bindings are to be obtruse or right angled.
In order to join two adjoining sides of a box by means of such a claw binding
edge to edge, these surfaces are laid upon a hard anvil block A of the form shewn
in Figures 4 and 11 which corresponds to the angle which the two sides of the box
are to form with each other after their junction, in this case a right angle.

page_text: 1+
7
A claw binding as shown in Figures 4 and 11 18 then put on. The claws b'do.
not stand at right angles to the sides of the box relatively, but in a slanting
direction. The claw binding is then pressed in by means of a die B which is made
to correspond to the form of the sides of the box to be produced as shewn in
Figures 4 and 11 by the action of a hammer or a stamping press on the sides of
the box. By this means the claws b penetrate into the material of the sides of the
box and necessarily in a slanting directions for the following reasons. Firstly
because the claws b as already mentioned stand in a slanting direction with
reference to the sides of the box and secondly because they bend downwards
somewhat during their insertion. The cardboard or other material of which the
box is made is therefore not pierced quite through by the claws but these latter
remain imbedded therein as shown in Figures 5 and 12, acting like barbed hooks
thus tying both the sides of the box together. Both the sides of the strips a lie flat
on the sides of the box and serve as both protection and decoration.
Corner joining pieces composed of such claw binding for boxes of cardboard and
the like are distinguished for their great powers of resistance.
In the above described fundamental forms the claw bindings principally serve to
connect straight edges, on the other hand those shown in Figures 13 to 18 are
preferable for joining a straight edge of a box with a curved one, or two curved
edges together.
In these forms the material of the strip a between the base of both rows of teeth
is so much lessened that as in Figure 13 the roots of the teeth of both rows touch
the neutral line of the strip a, or as in Figure 16 on the contrary project over it.
In both forms the claw binding may easily be bent in all directions and therefore
easily follows every bend of the sides of the box to be joined as shown in
Figures 15 and 18.
If as in Figure 19 holes c are stamped into the claw binding, the breadth of
which measured in the direction of the strip longways is equal to the remaining
piece of metal d between every two holes c, detachable edge junctions may be
applied to boxes of cardboard, leather and the like.
For this purpose the bindings are bent as shewn in Figure 20, so that the points
of the claws 6 come as close together as is necessary so as to be able to push the
thickness of the material forming the box between.
In this form two such bindings may be placed together like the parts of a hinge
as shown in Figure 21. According to this such a binding is put onto every one of
the parts of the box to be joined and fixed by means of hammering as shown in
Figure 22. If the two sides of the box are then placed together so that both the
bindings may be joined together by means of a pin like a hinge as shown in
Figure 23 thereby producing an edge fastening which answers every requirement.
If the pin e is withdrawn from the edge fastenings the latter are again liberated
and the previously connected parts of the box, if forming the sides, bend down to
the level of the bottom of the box so that at last every upper or lower part of a
box only forms a flat surface of which a great number may be safely laid over each
other taking up less room when packed than the boxes themselves and this is
attained by using these loose corner junction pieces.
The parts for a smaller detachable corner binding for baxes of cardboard leather
or the like are made from a claw binding of rather larger breadth which is stamped
into two pieces as shown in Figure 24. These are bent as shown in Figure 25 so
that the bindings connect like the parts of a hinge and as before described serve
for an adjustable corner connection.
If a claw binding is divided into two as shown in Figure 26 by means of a
straight cut in a direction lengthways each of them may be used as a rim binding
for the edge of a box. It may be put on by pressure or rolling.
If the claws b of such a half binding are bent as shewn at Figure 28 at right
angles to the strip a a suitable binding for binding the edges of boxes is attained
and is shown applied in Figure 29.

page_text: In box covers such a binding may replace the ordinary rim as shown in
Figure 30,
A claw binding bent as shown in Figure 31 produces a rim binding for a box
which may be put on to the edge by pressing or rolling and clamps into both
sides as shown in Figure 32.
Having thus particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim as the invention communicated to me is:-
The fittings, for uniting and strengthening the corners of boxes, provided with
teeth or claws, and constructed and applied substantially as set forth.
Dated this 10th day of February 1886.
JENSEN & SON,
For the Applicant.