Improvements relating to Wooden Wall Plugs.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements relating to Wooden Wall Plugs.
I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., of 18, Bucking-
ham Street, Strand, W.C., London, Patent Agent, do hereby declare the nature
of this invention a communication to me from abroad by Ignaz Friedinger, of
Oberthal, near Linz (Upper Austria) to be as follows:-
With this improved wall plug, setting in with cement is unnecessary because
it takes a fast hold by itself in the wall and presents the advantage with regard
to the hitherto used plugs of being entirely independent from the means for
fastening which is intended to find its hole therein (such as nails, hooks, screws)
so that a nail, screw or the like of any kind or size can be used in connection
with it.
The plugs consist of a cylindrical or prismatic wood body or plug proper
provided in one end with a wedge-shaped recess which runs deeply into it,'
nearly up to its other end and carrying round the former end a ring.
A further but separated part is a flat wood body or expander possessing the
thickness of the front end of the recess aforesaid so that it can be pushed into
this latter to a certain extent.
When it is to be used the plug proper is put with its hinder unsplit end into
a hole worked out in the wall whereupon the expander is driven into the recess
by means of a hammer.
As the recess is wedge-shaped, but expander driven therein is prismatic, the
plug proper bursts behind by the driving in of the expander and is driven out
sideways so that it occupies firmly the whole of the recess made for it in the
wall.
As the hole in the wall would be generally cylindrically or prismatic the
outward spread of the plug would be opposed and consequently a strong pressure
is effected between the wall and the plug whereby the latter is absolutely
held fast.
The ring prevents the plug during the driving in of the expander from
splitting apart at the front end instead of behind and so prevents the crumbling
of the edge of the wall hole.
Into the so fastened plug nails, screws, hooks or the like of any kind or size
may be driven or screwed.
Dated him 14th
of Danamh

page_text: of this invention a communication to me from abroad by Ignaz Friedinger, of
Oberthal, near Linz (Upper Austria) and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:
With this improved wall plug, setting in with cement is unnecessary because
it takes a fast hold by itself in the wall and presents the advantage with regard
to the hitherto used plugs of being entirely independent from the means for
fastening which is intended to find its hole therein (such as nails, hooks, screws)
so that a nail, screw or the like of any kind or size can be used in connection
with it.
The plug consists of a cylindrical or prismatic wood body or plug proper a
provided in one end with a wedge shaped recess b which runs deeply into it,
nearly up to its other end and carrying round the former end a ring c.
A further but separated part is a flat wood body or expander d possessing
the thickness of the front end of the recess b aforesaid so that it can be pushed
into this latter to a certain extent (see Fig. 1).
When it is to be used the plug proper a is put with its rear unsplit end into
a hole worked out in the wall whereupon the expander d is driven into the
recess by means of a hammer.
As the recess is wedge-shaped, but the expander driven therein is prismatic,
the plug proper bursts behind by the driving in of the expander and is driven
out sideways so that it occupies firmly the whole of the recess 3 made for it
in the wall (Fig. 4).
As the hole in the wall would be generally cylindrical or prismatic the
outward spread of the plug would be opposed and consequently a strong pressure
is effected between the wall and the plug whereby the latter is absolutely
held fast (Fig. 4).
The ring prevents the plug during the driving in of the expander d
from splitting apart at the front end instead of behind and so prevents the
crumbling of the edge of the wall hole.
Into the so fastened plug nails, screws, hooks or the like of any kind or size
may be driven or screwed.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:-
A wooden plug comprising a cylindrical or prismatic part a provided with a
wedge shaped recess b extending nearly up to its further end and surrounded
at its front end by a ring c and a prismatic wooden body or expander d of
substantially the same thickness as the recess at its front end.
Dotad this 22nd day of August 1900.