A New or Improved Wall Plug.
Year: 1898

page_text: COMPLETE
SPECIFICATION.
A New or Improved Wall Plug.
I, FRITZ BEYER, of Holtzestrasse 19, Kattowitz, Upper Silesia, in the German
Empire, Engineer, 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 a new or improved wall plug which may be easily and
firmly secured in place without the use of cement or the like and which may be
safely used even in a new wall without waiting for the wall or plaster to dry. The
new plug may be used for any purpose for which plugs have previously been used,
as, for example, for supporting a switch board or a heavy picture.
One form of the improved plug is illustrated in the accompanying drawings
which are hereinafter referred to.
Figure 1 illustrates the plug in elevation placed within a wall but not secured
in place.
Figure 2 shows the same plug in section.
Figure 3 represents it partly in section and partly in elevation firmly fixed within
the wall.
The plug consists essentially of a metallic or suitable tubular piece b, one end of
which, the inner when in use, is slightly coned or tapered and slit in one or more
places longitudinally. The edges of the coned end of the tube are returned or
flared outwards as shown at e. a is a coned nut or expander which is adapted to
be drawn into the coned end of the tube b and force the edges e outwards to
engage with the surrounding substance of the wall. The movement of the
expander a is preferably effected by means of a screw d.
A conveniently shaped part c may be combined with either the tube b or the
screw d to serve as a support for any desired article, or the screw d may pass
through the article which has to be secured to the wall.
In fixing the plug a hole is first formed in the wall in any suitable manner, this
hole being formed with a diameter equal to the diameter of the larger part of the
tube b. The nut a and the screw d are placed in the position shown by Figures 1
and 2 and the plug is placed in the hole. The screw is then turned so as to draw
the nut a into the tube b the coned part of which is thereby expanded until the
edges are forced into the wall as shown in Figure 3, thus firmly holding the plug
in place. Should it be necessary to withdraw the plug the screw is loosened and
the nut a forced out of the tube. A larger nut a than that shown may be employed
should the hole in the wall be slightly too large for the plug.
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 :-
1. A wall plug, consisting of a tubular part which is coned and a slit at one end
and has combined with it a coned nut or expander which may be drawn into the
tube when desired by a screw or the like in order to force the inner end of the

page_text: tube into intimate contact with the wall, substantially as hereinbefore described
and as illustrated by the accompanying drawings.
2. A wall plug, constructed and arranged substantially as herein before described
and as illustrated by the accompanying drawings.
D11:00 Much AD 1000