Improvements in Supports for Telegraph Insulators.
Year: 1892

page_text: Date of Application, 11th July, 1892
Complete Specification Left, 10th Apr., 1893-Accepted, 13th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Supports for Telegraph Insulators.
We, JOHN CRISP FÜLLER and GEORGE FULLER, both of Newcastle Wharf
Works, Old Ford Road, Bow, in the County of Middlesex, Electricians and
Telegraph Engineers, do hereby declare the nature of this invention to be as
follows:-
Hitherto it has been customary to use for the supports of telegraph insulators
cross arms made of oak or other like kind of wood. In our invention we make the
cross arms of tubular steel or iron as hereafter described whereby we gain the
advantage not only of increased durability, but on account of the peculiar tubular
form great simplicity, lightness, and strength.
According to our invention we employ tubular iron or steel arms strengthened
at those parts where it is bored for the reception of the bolts. We accomplish
this by slipping over the arm another metal tube or sleeve bored with corresponding
holes, thus giving greater strength at those points where the greatest strain is
thrown.
Dated this 11th day of Lul 1900
BREWER & SON,
33, Chancery Lane, London, Agents for Applicants.
COMPLETE SPECIFICATION.
Improvements in Supports for Telegraph Insulators.
We, JOHN CRISP FULLER and GEORGE FULLER, both of Newcastle Wharf
Works, Old Ford Road, Bow, in the County of Middlesex, Electricians and
Telegraph Engineers, 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 :—
Hitherto it has been customary to use for the supports of telegraph insulators
cross arms made of oak or other like kind of wood. In our invention we make the
cross arms of tubular steel or iron as hereafter described, whereby we gain the
advantage not only of increased durability, but on account of the peculiar tubular
form great simplicity, lightness and strength.
Our invention will be readily understood by the following description having
reference to the accompanying drawing, which shews in elevation, partly in section,
an example of the application of our invention to a telegraph post. According to
our invention, we employ a tubular iron or steel arm A strengthened for the
reception of the bolts. We accomplish this by slipping or passing over the arm A,
as shewn in the drawing, another metal tube or sleeve B, bored with corresponding
holes, thus giving greater strength at those points where the greatest strain is
thrown.
We are aware that it is not new to employ oak or other wooden arms across the
poles; nor is it new to support the insulators upon iron brackets secured to the
poles, therefore
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:
In supports for telegraph insulators, the tubular crossbars A in combination with
sleeve tube parts B for strengthening the crossbars A. all constructed and acting

page_text: substantially as and for the purposes set forth with reference to the accompanying
drawings.
Dated this 10th 1-
1000
BREWER & SON,
London and Leeds, Agents for Applicants.