IMPROVEMENTS IN BUTTONS
Year: 1884

page_text: I GERARD WENZESLAUS VON NAWROCKI, Proprietor of the firm of J. Brandt
& G. W. von Nawrocki, Patent Solicitor and Civil Engineer of 124 Leipzigerstrasse,
Berlin, Germany do hereby declare the nature of said invention for "IMPROVEMENTS
IN BUTTONS" (A communication to me by Dinklage and Franze of the City of
Tetschen a/E in the Empire of Austria) to be as follows:-
This invention consists mainly in covering the attachment part of wood horn or
vegetable ivory buttons with sheet metal in order to strengthen the holding
capabilities of the button, and in rounding off the edges of the holes in the
attachment part, in order to prevent the threads by which the button is sewn on
being cut.
The button therefore consists of two parts, namely the button proper with the
projecting attachment part on the underside and the metallic cap which is pressed
over the attachment part. The button is made with an annular slanting recess on
the underside and provided with a hole through the attachment part. The cap is
made of such a form that it corresponds to the underside of the button and its
bent over edge is of such a diameter, that it can just enter the grooved recess in
the underside of the button. In order to fix the cap on to the attachment, it is
placed on the attachment so that its edge just enters the groove and is then pressed
in by a suitably formed die, so that the bent over edge of the cap is thoroughly
forced into the groove.
The cap now wholly covers the attachment part, so that also the mouths of the
hole in the attachment part are completely covered. But in drilling this hole
through the button attachment marks are made against each end of the hole which
show the direction of the hole. A pointed punch is now driven into the cap from
each end of the hole, so that the burr which is formed thereby is forced over the
sharp edge thereof. By this means the cutting through of the thread is
prevented.

page_text: "
I GERARD WENZESLAUS VON NAWROCKI, Proprietor of the firm of J. Brandt
& G. W. von Nawrocki, Patent Solicitor and Civil Engineer of 124 Leipzigerstrasse,
Berlin Germany do hereby declare the nature of said invention for "IMPROVEMENTS
IN BUTTONS (A communication to me by Dinklage & Franze of the City of
Tetschen a/E in the Empire of Austria) and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement
This invention consists mainly in covering the attachment part of wood, horn or
vegetable ivory buttons, with sheet metal, in order to strengthen the holding
capabilities of the button, and in rounding off the edges of the holes in the
attachment part, in order to prevent the threads by which the button is sewn on,
being cut.
Figure 1 of the accompanying drawings is a cross section of the wooden or horn
part of the button; Figure 2 is vertical section of the metallic plate or cap;
Figure 3 is a plan of the upper side of button; Figure 4 plan of the underside of
the button and Figure 5 a cross section of the button when finished.
The button-therefore-consists of two parts viz the button proper A with the
projecting attachment part a on the underside Figure 1-and-the-metallic-cap-B
which is pressed over the attachment part a Figure 2. The button A is made as
shown in Figure 1 with an annular slanting recess b on the underside and provided
with a hole d through the attachment part. The cap B as shown in Figure 2 is
made of such a form that the parts e, f g thereof correspond to the underside of
the button A. and its bent over edge is of such a diameter, that it can just enter
the grooved recess b in the underside of the button. In order to fix the cap B on
to the attachment a it is placed on the attachment so that its edge just enters the
groove band is then pressed in by a suitably formed die, so that the bent over
edge h of the cap B is thoroughly forced into the groove b.
The cap B now wholly covers the attachment part a so that also the mouths of
the hole d in the attachment part are completely covered. But in drilling this
hole & through the button attachment marks are made at ii Figure 3 against each
end of the hole which show the direction of the hole d. A pointed punch is now
driven into the cap from each end of the hole so that the burr which is formed
thereby is forced over the sharp edge thereof and the button appears as shown in
Figures 4 and 5. By this means the cutting through of the thread is prevented.
Having now 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 is:
In buttons, covering the attachment part a, which has been previously drilled,
with a metallic cap B, by pressing the same into the annular recess b and
subsequently forcing the material of the cap into the hole d of the attachment
part in order to increase the strength of the button and to prevent the thread
being cut through.