IMPROVEMENTS IN TELEGRAPH POLES, AND FOR AFFORDING BETTER PROTECTION TO THE INSULATORS
Year: 1874

page_text: PROVISIONAL SPECIFICATION left by Henry Harman Slade and
William Arthur Slade at the Office of the Commissioners of
Patents, with their Petition, on the 18th December 1874.
We, HENRY HARMAN SLADE, of Easton Road, in the City of Bristol,
and WILLIAM ARTHUR SLADE, of 24, The Grove, Clapham Road, Surrey,
Gentlemen, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN TELEGRAPH POLES, AND FOR AFFORDING BETTER PROTECTION TO
THE INSULATORS," to be as follows:-
Our Invention consists in placing the insulators inside or on the inner
side instead of outside the poles or supports, and giving greater simplicity
in fixing them.
Firstly. By splitting the poles and placing the insulators on wooden
or other pins or bolts between the two halves, & bolting a piece of
timber or blocks between the lower part to allow room for the insulators
above (and to give increased strength to the poles or supports).
Secondly. By bolting one or more piece or pieces of wood on the side
or sides of the pole or other support, and placing the insulators as above
between the wood & the pole or other support.

page_text: Thirdly. By forming the poles or other supports of two or more pieces,
leaving openings at the top to allow the insulators to be placed in one
or more lines between them.
Fourthly. By morticing or cutting through the poles or other supports,
and fixing the wires if necessary on india-rubber or other soft substance
between a properly shaped pair of insulators placed in the mortice or
hole, & tightly wedging them, or fixing the insulators as described
firstly.
Fifthly. By fixing the insulators as mentioned, fourthly, but in the
side instead of the center of the pole.
Sixthly. By fixing the insulators between wooden or other rings with
india-rubber or other soft substance between them and the insulators to
save the insulators from damage from friction or other causes, and so as
to allow the rings to be removed to permit other wires to pass without
disturbing the insulators.
Seventhly. By bolting or fixing wooden or other supports for the
insulators to iron columns; and. we do not confine ourselves to any
particular size or shape for the columns, as that must vary considerably
in different localities, the principal of this part of the Patent being for
constructing the iron columns in such manner as to allow the wooden or
other material used to support the insulators to be so fixed to the columns
as to leave openings above in which the insulators can be fixed in
the manner before stated, and more particularly shown in the Drawings
herewith.
The Drawings herewith are intended to represent various poles &
supports in which some of the above methods are used, and are for
description but not restriction, the principal of the Patent being to so
construct the poles and supports that the insulators may be placed in a
protected position inside or on the inner side of the pole or support, and
we include in the Patent placing a wooden or other screen or shield to
protect the insulators in the position shown on the Drawings, although
it should not constitute a part of the pole or be used to support the
insulators.

page_text: Treenail driven
back & one ring
of Insulator re-
-moved for placing
or reparing lower