Improvements in the Manufacture of the Arms or Attachments of Telegraph Poles for Carrying Insulators.
Year: 1891

page_text: Date of Application, 23rd June, 1891
Complete Specification Left. 18th Mar., 1892-Accepted, 23rd Apr. 1892
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of the Arms or Attachments of
Telegraph Poles for Carrying Insulators.
I HOWARD COCHRANE JOBSON of Summer Hill Kidderminster in the County
of Worcester Telegraph Engineer do hereby declare the nature of this invention to
be as follows
My invention consists in making the arms or attachments of telegraph poles for
carrying insulators of moulded and compressed paper pulp or indurated or wood
fibre; that is to say 1 take paper pulp or indurated fibre properly prepared and by
means of a moulding operation give to the said pulp or fibre the form of the arm or
attachment to be made the plastic paper pulp or fibre being so compressed and
consolidated as to give to it the required density and strength. The moulded arm
or attachment of paper pulp or indurated fibre may be strengthened if required by
introducing during the moulding process into the substance of the non-metallic
material pieces of metal or other hard material and the arm may be further
strengthened by the addition to it of external plates or pieces fastened to it in any
required manner.
When the arm is made of paper pulp it may be painted or varnished to make it
proof against moisture. Or the arm may be treated with a waterproof material or
a solution of india rubber. Its insulating power is thereby increased and the leakage
of electricity prevented or diminished.
I prefer to place in the mould metallic or other sockets or eyelets so as to leave
lined holes or openings in the moulded arm. Through these holes or openings the
insulator bolts or attachments are passed for securing the insulators to the arm.
I prefer also to secure in the arm during the moulding operation the necessary
fittings by which it can be attached to the telegraph pole; but these and other
details I do not think it necessary further to describe as the essence of iny invention
consists in making the arms or attachments of telegraph poles for carrying insulators
of moulded or compressed paper pulp or indurated fibre substantially as herein
described.
Dated the 23rd day of June 1891.
W. T. WHITEMAN,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of the Arms or Attachments of
Telegraph Poles for Carrying Insulators.
I HOWARD COCHRANE JOBSON, of Summer Hill, Kidderminster, in the County
of Worcester, Telegraph Engineer, do hereby declare the nature of my invention
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :—
My invention consists in making the arms or attachments of telegraph poles for
carrying insulators of moulded and compressed paper pulp or indurated or wood
fibre; that is to say I take paper pulp or indurated fibre properly prepared and by
means of a moulding operation give to the said pulp or fibre the form of the arm or
attachment to be made, the paper pulp or fibre being so compressed and consolidated
as to give to it the required density and strength.
The moulded arm or attachment
of paper pulp or indurated fibre may be strengthened, if required by introducing
during the moulding process into the substance of the.non-metallic material, pieces
[Price Ed.]

page_text: of hard of rigid metal or other hard and rigid non-metallic material and the arm
may be further strengthened by the addition to it of external plates or pieces
fastened to it in any required manner
When the arm is made of paper pulp it may be painted or varnished to make it
proof against moisture. The varnish cimployed may either be a spirit or oil varnish.
Or the arm may be treated with a waterproof material or a solution of india rubber.
Its insulating power is thereby increased and the leakage of electricity prevented
or diminished..
I prefer to place in the mould, metallic or glass or china or other sockets or
eyelets so as to leave lined holes or openings in the arin moulded in the said
mould. Through these holes or openings the insulator bolts or attachments are
passed for securing the insulators to the arm." I may provide for securing in the
arm during the moulding operation the necessary fittings by which the said arm
can be attached to the telegraph pole. These fittings differ in no essential respect
from those commonly employed and 'constitute no part of my invention: therefore
do not think it necessary to describe the same. 1401
Having now particularly described and ascertained the nature of my inven-
tion' and in what manner the same is to be performed I declare that I claim
as my invention:
in
>
Manufacturing the arms or attachments of telegraph poles for carrying insulators
of 'moulded and compressed paper pulp or indurated wood fibre preferably>
strengthened internally and externally by rigid 'metallic or non-metallic plates, rods
or tubes and provided with lined or unlined holes or openings in the 'substance of
the arm or attachment for the passage of the insulator bolts' and also provided 'with
or prepared for fittings for connecting the arm or attachment to the telegraph pole
substantially as hereinbefore described:
しゃ
"
.
Dated the Eighteenth day or March 19
W. T. WHITEMAN,
Agent for the Applicant.