Improvements in and connected with Insulating Supports for Electric Apparatus.
Year: 1889

page_text: Date of Application, 3rd Apr., 1989
Complete Specification Left, 2nd Jan., 1890-Accepted, 15th Feb., 1890
PROVISIONAL SPECIFICATION.
Improvements in and connected with Insulating Supports for
Electric Apparatus.
I, ARTHUR WELLINGTON FITCH, of 10 Wilson Street, Finsbury, in the County of
London, Commission Merchant, do hereby declare the nature of this invention
(a communication from abroad by Richard Oliver Gardner Drummond of Kimberley,
South Africa, Mining Engineer) to be as follows:-
This invention relates to insulating supports for electric apparatus.
According to the said invention an ordinary bolt porcelain insulator is made in
any of the usual forms, except that instead of having the neck and groove to sustain
the wire it is made with a flat round table on the top, upon which a switch, cut-out,
push or any electrical instrument can he secured in the ordinary way by screws etc.
The metal parts necessary for such cut-out or other appliance may be secured on
the round table of the insulator which serves as the base of the instrument.
A metal or porcelain cap made to cover the electrical connections, and secured by
pins or screws on the side of the round table or base, protects the instrument from
damp and dust.
The insulators can be made of any size or shape and used for any électrical
connection or contrivance in damp places where there is a difficulty in keeping the
insulation good.
G. F. REDFERN.& Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and connected with Insulating Supports for
Electric Apparatus.
I, ARTHUR WELLINGTON FITCH, of 10, Wilson Street Finsbury, in the county of
London, Commission Merchant, lo hereby declare the nature of this invention
(a communication from abroad by Richard Oliver Gardner Drummond, of Kimberley,
South Africa, Mining Engineer) and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement:-
This invention has for its object to provide insulated supports or bases for electric
cut-outs, switches, pushes or other electrical apparatus or instruments for use in mines
and other damp places.
According to the said invention an ordinary bolt porcelain insulator is made in
any of the usual forms, except that instead of having the neck and groove to sustain
the wire, it is made with a table on the top, upon which a switch, cut-out, push or
any electrical instrument can be secured by screws or other suitable means.
The metal parts necessary for such cut-out or other appliance may be secured on
the round table of the insulator which serves as the base of the instrument.
A metal or porcelain cap made to cover the electrical connections, and secured
by pins or screws on the side of the round table or base, protects the instrument from
damp and dust.
The insulators can be made of any size or shape and used for any electrical
connection or contrivance in damp places where there is a difficulty in keeping the
insulation good.
To enable the invention to be understood I will describe the same with reference
to the accompanying drawing, in which—
Figure 1 is an elevation of an insulating support constructed according to the said
invention.

page_text: Figure 2 is a similar view of a switch adapted for application thereto.
Figure 3 is a plan of the insulating support with the switch applied; and
Figure 4 is a longitudinal vertical section.
Figure 5 is a vertical section of a modified form of insulating support.
Similar letters of reference indicate corresponding parts in the several figures.
a is the body of the insulating support, which is formed with a recess or groove b
or the like in the same manner as an ordinary insulator for carrying electric wires,
and provided with a bolt or other support c. As shown in figure 1 the upper part of
the body a is made flat whereby it is adapted to have a switch (for instance that
shown in figure 2) or other electrical device secured to it, as shown in figure 4.
d, d are holes or passages through which the circuit wires or leads can be inserted to
connect them with the device secured to the support.
In figure 5 the upper flat part of the support is represented as being placed at an
angle instead of horizontally as shown in figures 1 and 4, and fixed to it a magneto
cut-out.
It is obvious that any electrical apparatus necessary for electric installations for
mines or other damp places may be mounted upon insulated supports of the kind
herein before described, the shape of the flat portion and the angle at which it is placed
being varied according to circumstances.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The manufacture and use of insulating supports constructed substantially in the
manner hereinbefore described for the purposes set forth.
Dated the 2nd day of January 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.