IMPROVEMENTS IN INSULATING SUPPORTS FOR TELEGRAPH AND TELEPHONE WIRES
Year: 1883

page_text: LETTERS PATENT to Sydney Woolf of Mexborough in the County of York
for an Invention of IMPROVEMENTS IN INSULATING SUPPORTS FOR TELEGRAPH
AND TELEPHONE WIRES
PROVISIONAL SPECIFICATION left by the said Sydney Woolf at the Office
of the Commissioners of Patents on the 15th August 1883.
SYDNEY WOOLF of Mexborough in the County of York " IMPROVEMENTS IN
INSULATING SUPPORTS FOR TELEGRAPH AND TELEPHONE WIRES
"
My Invention relates to Improvements in insulating supports for aerial
telegraph and telephone wires whereby good insulation of the wires is ensured in
all weathers and the poles are preserved from the decay which the usual tarring
and painting alone is inadequate to prevent.
My. Invention consists in the construction of an earthenware sheath with
supporting arms, projections or brackets also of earthenware to carry the wires
either moulded in one therewith or made separate and attached thereto by bolts.or
otherwise. This sheath is closed at top and may be of such dimensions as to
closely envelope the upper part of the pole or any greater portion of its length,
the sheath being in the latter case either in one length or built up of two or more
tubular sections. The arms projections or brackets for the support of the wires are of
such form and dimensions as to adapt them to withstand the strains to which they
may be subjected by the wires. These arms, projections or brackets may be grooved
with oblique undercut grooves and the wires may be bound to them in the same way
as they are now bound to ordinary insulators, or the arms may be otherwise grooved,
or they may have slots or notches moulded or formed in them of such form that the
wires may be slipped laterally into said slots or notches, but cannot escape
therefrom or the projections, arms or brackets may be perforated and the wires be
threaded through them or insulators may be attached to the arms forming an
integral part or may be separate and fixed to them by means of a bolt.
These arins may be fixed either to the pole itself or to the sheathing by
means of iron bolts which might pass longitudinally through the arms and the
pole from end to end, or otherwise through the centre of the arm and pole
The bolts will be fastened with nuts at either end and either countersunk or
otherwise
At the extremity of the arms is fixed an earthenware shield to protect the bolt
By this Invention I am enabled to dispense with the ordinary wooden arms or
metal brackets and the ordinary insulators and their attachments whilst ensuring
the thorough preservation of the wooden pole.

page_text: 2nd The particular construction of insulating and supporting arm substantially
as herein shown and described, consisting of the tubular arm B, the enlargement B¹
and insulator cup E all moulded in one piece of earthenware.
3 The combination of an insulating arin constructed as herein described with
an iron supporting rod or boit enclosed therein and fixed in the pole, substantially
as shown and described.
In Witness whereof I the said Sydney Woolf have to this my specification
hereunto set my hand and seal this thirteenth day of February, A.D. 1884.
SYDNEY WOOLK (1.8)