Improvements in and relating to the Fixing of Insulators for Carrying Electric Line Wires.
Year: 1899

page_text: Date of Application, 2nd Feb., 1899 -Accepted, 25th Mar., 1899
COMPLETE SPECIFICATION.
Improvements in and relating to the Fixing of Insulators for
Carrying Electric Line Wires.
I, HUGO FLEISCHHACKER, of 28A, Bolkerstrasse, Dusseldorf, in the Province of
the Rhine, in the Kingdom of Prussia, in the German Empire, Manufacturer,
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 fol-
lowing statement:―
My invention relates to the fixation of insulators for carrying electric line wires,
and consists of improvements in the stem or holder of such insulators, by means
of which they may be fixed into stone, brick, or other walls, with less likeli-
hood of their becoming detached therefrom through oxidation of the said stem
or holder, as obtains with those in present use.
In order that the said improvements constituting my invention may be fully
understood I have hereunto appended a sheet of drawings, of which:-
-
Fig. 1 is a view of an ordinary insulator mounted upon a stem or holder, con-
structed and arranged according to my invention, Fig. 2 being a view illustrating
the external appearance of the said stem or holder detached from the said insu-
lating body.
Fig. 3 is a section upon the line CD while Fig. 4 is a section upon the line AB
of Fig. 1.
For the purposes of my invention I construct the stem or holder A of any suit-
able non-oxidizable metal, or alloy of metals, or iron or steel galvanized to pre-
vent oxidation, one end of which, B, is provided with an ordinary screw thread,
adapted to engage with a like threaded hole formed in the back of the insulator
or insulating body C, the remainder of the stem A being tapered and gradually
extended in diameter towards its opposite end, and upon the said tapered portion
I form any number of annular grooves D, each being in cross section in the form
of a ratchet tooth or the tooth of a hand saw, the shorter sides of the said grooves
being at right angles with the plane of the stem A.
In practice, the hole formed in the wall or other surface, at the point where the
insulator or insulating body is to be fixed, would be, preferably, of tapered
formation, larger than, but corresponding to the tapered portion of A, and of such
depth as to receive the said tapered portion only, the space within the said hole
outside the stem or holder A being then grouted or otherwise filled in with Port-
land cement, gypsum (or plaster of Paris) lead or other suitable material, this
in conjunction with the shape of the hole in the wall or other surface, and the
annular grooves D in A, forms a key which entirely obviates the possibility of the
said stem or holder leaving the said hole until the said cement or other material
is chipped or otherwise cut away or dislodged. The insulator or insulating body C
may now be screwed upon the thread portion B, and be thereby fixed in position
thercon in the manner indicated by Figs. 1 and 3.

page_text: 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 the fixing of insulators or insulating bodies such as C, the combination
therewith of a stem or holder such as A, of non-oxidizable material, and having
a threaded portion such as B, for receiving the said body C, and a tapered portion
in which is formed any number of annular grooves D, and the means of fixing
the said tapered portion in a cavity formed in a wall or other flat surface by the
means of suitable cement, lead, or other material substantially as and for the pur-
poses herein set forth and shewn by the appended drawings.
Dated this 2nd day of February 1899
GEO. THOS. HYDE,
1, Broad Street Buildings, Liverpool Street, London, E.C.,
Agent for the Applicant.