Improved Means or Apparatus for Securing or Attaching Hooks, Brackets, and other articles to Stone, Wood, and other Structures.
Year: 1892

page_text: Date of Application, 20th Oct., 1892
Complete Specification Left, 12th. Nov., 1892-Accepted, 31st Dec., 1892
Improved Means or Apparatus for Securing or Attaching Hooks,
Brackets, and other articles to Stone, Wood, and other
Structures.
I, JOHANN FRIEDRICH AUGUST LIEVERENZ, of Lindley-strasse 58, Hamburg,
Germany, Mechanical Engineer, do hereby declare the nature of this invention to
be as follows:-
This invention relates to means or apparatus for securing or attaching articles to
structures of masonry, brickwork, wood and the like, which can be readily fixed
and can also be removed without difficulty.
According to my invention I use a bolt which is surrounded by plates or pieces
and has a conical or wedge-shaped part the arrangement being such that on the
bolt being rotated or a nut upon it being tightened up the plates or pieces will be
expanded so as to securely retain the bolt in the recess in the structure in which
it has been placed.
Referring to the accompanying drawings,
Fig. 1 is a view partly in section illustrating my invention;
Fig. 2 is a cross section thereof.
a is the bolt; it is screw-threaded at its inner end which works in a tapered
nut c;
bare plates or pieces lying parallel with the bolt and completely surrounding
it. Their exterior surfaces are roughened at their inner ends as shown. They
overlap the tapered nut c and are provided near their outer ends with a groove d
in which a wire fis placed to hold the plates together. The inner portions of
the plates bare formed to fit the exterior of the tapered nut c, which is rectangular
in cross section. To prevent the plates from shifting on the bolt a the latter is
formed with a shoulder y that engages in a groove in the plates b.
To use the apparatus a hole is first made in the wall as shown into which the
apparatus is then inserted. The bolt a is then rotated the tapered nut c being
thereby caused to traverse the bolt in an outward direction and force the plates
apart, tightening them against the sides of the hole and thus retaining the bolt
firmly in position. The outer end of the bolt is bent so as to form a hook for a
lamp or other article.
Figs. 3 and 4 are similar views to Figs. 1 and 2 illustrating an arrangement
suitable for securing plates, angle irons, brackets or the like in place. In this
arrangement, the inner end of the bolt a which is tapered as shewn, is rectangular
in cross section; the outer end of the bolt is formed with a screw-thread on which
a nut is adapted to work. On the nut being rotated the plates 6 will be operated
in the manner described with reference to the preceding arrangement and the
bracket, angle iron or the like will be secured firmly in position but nevertheless
in such a manner that it can be readily moved on the nut being unscrewed.
Dated this 20th day of October 1892.
J. F. A. LIEVERENZ,
By L. W., per F. B.

page_text: COMPLETE SPECIFICATION.
Improved Means or Apparatus for Securing or Attaching Hooks,
Brackets, and other articles to Stone, Wood, and other
Structures.
I, JOHANN FRIEDRICH AUGUST LIEVERENZ, of Lindley-strasse 58, Hamburg,
Germany, Mechanical 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 means or apparatus for securing or attaching hooks,
brackets and other articles to stone, brick, wood and other structures in such a
manner that they can be readily fixed in position and can also be removed without
difficulty.
According to my invention I use a bolt which is surrounded by plates or parts
and is formed or provided with a conical or wedge-shaped part, the arrangement
being such that on the bolt being rotated or a nut upon it being tightened up the
plates or parts will be expanded so as to securely retain the bolt in the recess in
structure in which it has been placed.
Referring to the drawings filed with my Provisional Specification,
Fig. 1 shows partly in elevation and partly in section means or apparatus
according to this invention for securing a hook to a wall.
Fig. 2 is a cross section thereof.
a is a bolt one end of which in this example is formed to serve as a hook suitable
for supporting a lamp, clock or other article. The other end of the bolt is screw
threaded and works in a nut c the exterior of which is made taper as shown. bb are
plates or pieces of suitable material for example iron arranged lengthwise of the
bolt so as to surround it, and roughened externally at their rearward portions
as shown. These plates are arranged to overlap the tapered nut c and are formed
near their outer ends with a groove d in which a wire is placed to hold the
plates together. The inner portions of the plates bare formed to fit the exterior
of the tapered nut c, which in the example shown is rectangular in cross section.
To prevent the plates b from shifting endways on the bolt a, the latter is formed
with
a shoulder that enters a corresponding groove in the plates b.
To fix the hook to a wall a hole is first made in the wall into which the apparatus
is then inserted as shown. The bolt a is then rotated so that the tapered nut c
is caused to traverse the bolt in an outward direction and force the plates b apart,
thereby tightening them against the sides of the hole and thus retaining the bolt
and consequently the hook at its outer end firmly in position.
Figs. 3 and 4 are similar views to Figs. 1 and 2 illustrating an arrangement
suitable for securing plates, angle irons, brackets or the like in place. In this
arrangement, the inner end of the bolt a, which is tapered as shewn, is rectangular
in cross section; the outer end of the bolt is forined with a screw-thread on
which a nut is adapted to work. On this nut being rotated the plates will be
operated in the manner described with reference to the preceding arrangement and
the bracket, angle iron or the like will be firmly secured in position, but never-
theless in such a manner that it can be readily moved on the nut being unscrewed.
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
1. For securing or attaching hooks, brackets, and other articles to stone wood
and other structures, apparatus comprising a bolt a surrounded by plates or parts
such as band formed or provided with an end ways adjustable actuated wedge or
tapered body against which the plates or parts & bear, the arrangement being such
that when the said wedge or tapered body is moved endwise, the said plates or

page_text: parts will be forced or wedged apart so that both they and the bolt become firmly
held within a hole within which they are placed substantially as herein described.
2. My improved means or apparatus for securing or attaching hooks, brackets
and other articles to stone wood or other structures, constructed arranged, and
operating as hereinbefore described with reference respectively to and shown in
Figs. 1 and 2 and in Figs. 3 and 4 of the drawings.
Dated this 12th day of November 1892
J. F. A. LIEVERENZ,
By L. W., per F. B.