Improvements in Electric Light Wire Casing.
Year: 1899

page_text: Improvements in Electric Light Wire Casing.
I, ALBERT DAVIDSON, of 139, Norfolk Street, City of Sheffield, Engineer, do
hereby declare the nature of my invention to be as follows:-
My invention has for its object to improve the construction of the casing in
which the wires for electric lighting purposes are carried.
These are usually made of lengths of wood grooved longitudinally with two
grooves, in which the wires are laid, and closed by a wood cap.
I propose to use a single broad groove or channel, and to line the groove with
a thin metallic lining, preferably of steel, made in two halves or parts rolled
to shape; the division being longitudinal and central.
The edges of the lining would terminate with the face of the wood, and a
thin metal cover plate would be attached to the inner face of the wood capping
strip.
In some cases the wood capping may be dispensed with, and a plain or moulded
strip of metal substituted; I am enabled by my invention to place more wires
in a given space.
ROBT. F. DRURY,
Agent for Applicant,
Bank Buildings, George Street, Sheffield.
Improvements in Electric Light Wire Casing.
I, ALBERT DAVIDSON, of 139, Norfolk Street, City of Sheffield, Engineer, 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:-
My invention has for its object to improve the construction of the casing in
which the wires for electric lighting purposes are carried.
These are usually made of lengths of wood grooved longitudinally with two
grooves, in which the wires are laid, and closed by a wood cap.
My invention is illustrated in the annexed sheet of drawings in which Figs. 1,
2 and 3, represent three methods of carrying out my invention for ordinary
purposes.
In carrying out my invention I use a single broad groove or channel G, and
I line such groove or channel with a thin metallic lining L, preferably of steel

page_text: constructed either in two halves or parts rolled to the desired shape in cross
section, the division being by preference longitudinal and central.
The edges of the lining would be made to finish with the face of the wood
casing W, and a thin metal cover plate P, is fixed to the inner face of the wood
capping C.
I prefer however where practicable to make the metallic lining L, in one single
piece of material such as shown in Figs. 1 and 2.
In some cases I may dispense with the wood capping altogether, and substitute
for it a plain or moulded strip of metal P, as shown in Fig. 3.
By my invention I am enabled to use more wires within a given space and the
construction of the casing is otherwise improved.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:—
1. A casing for electric light wires consisting of a length of wood or other
like material W, having a single groove G, provided with a thin metallic lining L,
and covered or closed by a thin metallic plate P, either attached to a wood cover C,
or not as preferred, as herein before described and set forth.
2. In casing for electric light wires, (such as are usually made of lengths of
wood grooved longitudinally) protecting the face of the groove with a metallic
lining such as L and closing it with a strip or plate of metal (such as P,) either
self supporting or carried by an outer wood cover C, as hereinbefore described and
shown in the drawings.
Dated the 21st day of October 1899.
ROBT. F. DRURY, C.P.A.,
Agent for Applicant,
Bank Buildings, George Street, Sheffield.