Improvements in or relating to Metal Clamping Strips, Eyelets and the like.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Metal Clamping Strips, Eyelets
and the like.
A part communication from EMIL SALTZKORN, of Dresden, in the Empire of
Germany.
I, LUDWIG NICOLAI, Mechanical Engineer, of 32, Loebtauerstrasse, Dresden,
in the Empire of Germany, temporarily residing at 23, Dulwich Road, Herne
Hill, in the County of Surrey, do hereby declare the nature of this invention
to be as follows:-
This invention relates to metal clamping strips, eyelets and the like, and has
for its object to construct such an article adapted more particularly for the
purpose of fastening the edges of boxes, in such a way, that each projection from
the metal strip will, in clinching, be turned over at a point near its base. The
invention is specially adapted for use in connection with metal strips intended
to form the edges of pasteboard or similar boxes, but it is to be understood that
may not only be used in connection with a strip, in which are a series of eyelets
but also in connection with single eyelets or other similar devices.
it
The metal strip which is adapted to be bent at right angles to form the edge
or corner of a box or the like, is made of any length desired, and near each edge
the metal is perforated, so as to force up from the strip a number of points
adapted to pierce the material to which the strip is applied. The perforations
are made by a suitable die and punch so arranged that each of the points or
projections, is curved slightly backwards, the object of this being that when the
projections are forced into the material they will be directed backwards to clinch
the material, the risk of their turning forward and closing the opening being
obviated. In order to ensure the bending of the projections at their bases where
they join the metal strip, the projections are undercut, so that each has the form
approximately of an arrow head. Thus, the greatest width of the projection is
at a little distance above the base where it joins the main strip, and consequently
when the projection is bent over it will bend on the line of its base. In making
the projections with the undercut edges, small pointed projections between each
of the larger ones are formed.
The number of projections surrounding each opening or perforation in the
strip may be three, four or more in number as desired. The main strip may have
its edges scalloped, or otherwise shaped as found convenient.
Dated
this 20th day of October 1899

page_text: Improvements in or relating to Metal Clamping Strips, Eyelets
and the like.
A part communication from EMIL SALTZKORN, Consul of Dresden in the Empire
of Germany.
I, LUDWIG NICOLAI, Mechanical Engineer, of 32, Loebtauerstrasse, Dresden,
in the Empire of Germany, temporarily residing at 23, Dulwich Road, Herne
Hill, in the County of Surrey, 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 metal clamping strips, eyelets and the like, and has
for its object to construct such an article adapted more particularly for the
purpose of fastening the edges of boxes, in such a way, that each projection from
the metal strip will, in clinching, be turned over at a point near its base. The
invention is specially adapted for use in connection with metal strips intended
to form the edges of pasteboard or similar boxes, but it is to be understood that
it may not only be used in connection with a strip, in which are a series of eyelets
but also in connection with single eyelets or other similar devices.
The metal strip which is adapted to be bent at right angles to form the edge
or corner of a box or the like, is made of any length desired, and near each edge
the metal is perforated, so as to force up from the strip a number of points
adapted to pierce the material to which the strip is applied. The perforations
are made by a suitable die and punch so arranged that each of the points or
projections, is curved slightly backwards, the object of this being that when the
projections are forced into the material they will be directed backwards to clinch
the material, the risk of their turning forward and closing the opening being
obviated. In order to ensure the bending of the projections at their bases where
they join the metal strip, the projections are undercut, so that each has the form
approximately of an arrow head. Thus, the greatest width of the projection is
at a little distance above the base where it joins the main strip, and consequently
when the projection is bent over it will bend on the line of its base. In making
the projections with the undercut edges, small pointed projections between cach
of the larger ones are formed.
In the accompanying drawings:-
Figure 1 is a perspective view showing a metal strip embodying this invention,
Figure 2 is a perspective view and Figure 3 a plan of a single eyelet.
Figure 4 is a section on the line 4-4 of Figure 3.
Figure 5 is a section on the line 5-5 of Figure 3.
Figure 6 is a transverse section showing an eyelet in position clinching the
strip to the cardboard side of a box or to other material.
Figure 7 is a view of a single eyelet constructed according to this invention,
and
Figure 8 is a view of a corner strip having two eyelets.
Like letters indicate like parts throughout the drawings.
The metal strip A is perforated at A in such a manner as to strike up projec-
tions B. The perforations A¹ are arranged near the edge of the strip A and
the metal forced from the strip is, in the present instance, separated into four
paris B by a suitable die, and each of these parts is curved so that the points
project slightly backwards away from the perforation. The object of this is that
when the eyelet is forced into the material, the projections will be forced back-
wards to clinch rather than forwards to close the opening.

page_text: In order to ensure the bending of the projections B at the base where they join
the strip A, each projection is undercut at its edges as shown at B' from a point B
to where it joins the strip; thus each projection will be in the form of an arrow-
head. Owing to this undercutting of the edges the greatest width of the pro-
jections B is some distance above the point where they join the strip A and con-
sequently when the projections are bent over to clinch the material, they will
bend on a line below the points B2, which is the line of greatest width.
In undercutting the edges of the projections B small pointed projections C will
be formed between each of the larger projections B.
The metal strip A is shown in Figure 1. as being scalloped at its edges A², the
curved portions of the scallops being concentric with the perforations A'. If
desired the edges may be made plain or may be differently shaped.
The number of projections B surrounding each opening or perforation A¹ in
the strip may be varied as desired.
Having now particularly described and ascertained the nature of the said
invention, as communicated to me in part by my foreign correspondent, and in
what manner the same is to be performed, I declare that what I claim is:-
1. An eyelet having a projection such as B whose edges are undercut at the
base for the purpose described.
2. An eyelet having a series of projections whose edges are undercut at the
base alternating with projections such as C substantially as described.
3. A strip having a series of openings each provided with one or more pro-
jections such as B whose edges are undercut substantially as and for the purpose
described.
4. The complete strip substantially as described or illustrated in Figure 1 or in
Figure 8 of the accompanying drawings.
5. The complete eyelet substantially as described or illustrated in Figure 2, in
Figures 3, 4 and 5, in Figure 6 or in Figure 7 of the accompanying drawings.
Dated this 16th day of August 1900.
LUDWIG NICOLAI,
Emil Saltzkorn.
Boult, Wade & Kilburn,
Agents for the Applicant.
LUDWIG NICOLAI,
Emil Saltzkorn.
Boult, Wade & Kilburn,
Agents for the Applicant.