Improvements in Plugs to be Driven into Walls to Receive Nails, Screws, or the like.
Year: 1891

page_text: Date of Application, 6th Aug., 1891
Complete Specification Left, 5th May, 1892-Accepted, 2nd July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Plugs to be Driven into Walls to Receive Nails,
Screws, or the like.
I, HUGO KORTEN, of 113 Malden Road, Kentish Town, in the County of
Middlesex, Electrician, do hereby declare the nature of this invention to be as
follows:-
Hitherto, before driving a nail or screw into a wall, it has been customary to
make a hole with hammer and chisel in the said wall to receive a wooden plug cut
to fit it and into which the mail, screw, or the like has to be driven in order to
afford it a better hold. Now this invention relates to a form of plug which may
be driven directly into a wall that is not specially prepared to receive it.
The said plug is constructed of an iron or other metal tube preferably polygonal
in section, so as to prevent its turning in the wall, and closed at one end which is
pointed so as to allow of its being driven into a wall by means of a hammer. The
interior of this tubular casing is filled with a core of wood or other suitable
material also preferably polygonal in section, which is retained therein by the slight
riveting over of the open end of the said tubular casing. The said core is
provided to receive the nail, screw, or the like, which is to be driven or inserted
in the wall.
In a modified arrangement intended to receive metal screws the plug is con-
In
structed entirely of iron or other metal tapped to receive the said screws.
order to prevent the thread from being injured by the blows of the hammer when
the plug is being driven into the wall, the mouth of the tapped hole is bored out
to a larger diameter.
Dated this 5th do of August 1801
CASTLE SMITH,
Invention" Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Plugs to be Driven into Walls to Receive Nails,
Screws, or the like.
I, HUGO KORTEN of 113 Malden Road, Kentish Town in the County of
Middlesex, Electrician, 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 :-
Hitherto, before driving a nail or screw into a wall, it has been customary to
make a hole with hammer and chisel in the said wall, to receive a wooden plug cut
to fit it, and into which the nail screw or the like has to be driven in order to
afford it a better hold.
1
Now this invention relates to a form of plug which may be driven directly into
a wall, which is not specially prepared to receive it.
My invention will be readily understood by reference to the accompanying
drawings, in which the plugs may be either cast, forged or made up as most
convenient.
Figs. I and III represent a plug of square section, having a point, Figs. II
and IV being a plan of the same. Fig. V represents a similar plug but with a
chisel edge, Fig. VI being a plan of the same.
Figs. VII, IX and XI with their respective plans Figs. VIII, X and XII

page_text: represent round plugs having polygonal shaped points to prevent them from turning
in the wall.
A in Figs. I, III, V, VII, IX, and XI represent the recess or hollow in the
plug, which is filled by a plug of wood to receive the nail, screw or the like and as
will be seen the orifice is represented as being burred over, this happening when
the plug under the blows of a hammer is being driven into the wall, thus fixing the
wood securely in the metal.
Figs. XIII, XV, and XVII with their respective plans Figs. XIV, XVI
and XVIII represent a modified arrangement for receiving tapped metal screws,
the hole or recess B being tapped to receive the said screw. To obviate damage
to the thread by burring over when being driven into the wall, the orifice as shown,
is countersunk or enlarged sufficiently to allow of there still being room for the
screw to enter without the necessity for removing the burr.
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:
I. The combination of a plug of wood or other suitable material with an exterior
casing of metal of suitable form, substantially as described and for the purposes
set forth.
II. The improved wall plug, for driving into walls and the like, substantially as
described in the drawings.
D
1
HUGO KORTEN.