Improvements in Casings, Culverts, or Means for Supporting and Protecting Electrical Conductors.
Year: 1894

page_text: Date of Application, 8th Mar., 1894
Complete Specification Left, 27th Aug., 1894-Accepted, 29th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Casings, Culverts, or Means for Supporting and
Protecting Electrical Conductors.
We, GERALD ST. JOHN DAY, of 53 Union Street West, Oldham, Electrical
Engineer, and SAMUEL ALLMARK, of 23 North Street, Oldham, Pattern Maker,
do hereby declare the nature of this invention to be as follows:-
:-
This invention relates to the casings, culverts, or means for supporting and
protecting electrical conductors, and is of special value when such casings are
fixed to the underside of ceilings, along walls, or so situated as to cause the
electrical wires, cables, and the like, to require support during erection.
In the ordinary form of casing it is necessary to retain the wires or cables
within the casings whilst fixing the same, by means or use of temporary supports,
which supports have to be detached before the cover or cap can be finally secured
to a casing in the ordinary manner.
The object of our present invention is to provide a casing of a character which
permits of complete support for the electrical conductors, before they are finally
secured in their positions by the cover or covers.
To accomplish this, and to effect our improvements, we form the casing of wood,
or other suitable substance, which has a groove or grooves provided in two opposite
sides thereof, instead of underneath the length of the material as at present in
use; thus leaving a central solid portion between the grooves for keeping the
remainder of the piece intact. Within these grooves the wires or cables are placed,
and the caps or covers for finally securing them in position, we make in the form of
strips which extend along the length of the casing, one on each side. These covers
are by preference formed with a tongue or projecting portion of suitable depth, to
fit into its corresponding groove in the casing containing the wire, wires, or cables.
When two or more casings are required side by side, we may so form the same
as to make the tongue of one casing fit into the groove of the casing adjoining it,
thus obviating the use of a separate cover on that side, thereby necessitating
covers only for the outer grooves of the system.
Variations in detail may be made, such as the materials of which the casings
are composed, their size, the shape of the grooves, together with the particular
mode of building up the casings, without departing from the peculiar character of
the invention.
Dated this 7th day of March 1894.
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent.
COMPLETE SPECIFICATION.
Improvements in Casings, Culverts, or Means for Supporting and
Protecting Electrical Conductors.
We, GERALD ST. JOHN DAY, of 53 Union Street West, Oldham, Electrical
Engineer, and SAMUEL ALLMARK, of 23 North Street, Oldham, Pattern Maker,
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 :-
This invention relates to the casings culverts, or means for supporting and

page_text: protecting electrical conductors, and is of special value when such casings are fixed
to the underside of ceilings, along walls, or so situated as to cause the electrical
wires, cables, and the like, to require support during erection.
In the ordinary form of casing it is necessary to retain the wires or cables within
the casings whilst fixing the same, by means or use of temporary supports, which
supports have to be detached before the cover or cap can be finally secured to a
casing in the ordinary. manner.
The object of our present invention is to provide a casing of a character which
permits of complete support for the electrical conductors before they are finally
secured in their positions by the cover or covers.
To accomplish this, and to effect our improvements, we form the casing of wood,
or other suitable substance, which has a groove or grooves provided in two opposite
sides thereof, instead of underneath the length of the material, as at present in
use, thus leaving a central solid portion between the grooves for keeping the
remainder of the piece intact. Within these grooves the wires or cables are placed,
and the caps or covers for finally securing them in position, we make in the form of
strips which extend along the length of the casing, one on each side.
These covers are, by preference, formed with a tongue or projecting portion of
suitable depth, to fit into its corresponding groove in the casing containing the wire,
wires, or cables.
When two or more casings are required, side by side, we may so form the same
as to make the tongue of one casing fit into the groove of the casing adjoining it,
thus obviating the use of a separate cover on that side, thereby necessitating covers
only for the outer grooves of the system.
But that the improvements may be better understood, we will, with the aid of
the accompanying drawings, proceed more fully to describe means employed by us.
DESCRIPTION OF DRAWINGS.
The figures represent cross sections of various forms and combinations of grooved
casings, according to our improvements.
The same letters indicate corresponding parts wherever they occur.
a. a. is one form of simple casing provided with grooves a', which casing may be
enclosed by the covers b, and so employed alone, as a simple system; or the casing
may be connected to suitable extension pieces c, with the covers 6 completing a
compound system, as shewn in Fig. 4.
are the projections or tongues which are formed by preference upon the covers b;
and similar tongues upon the extension pieces c, such tongues being, in the
examples shewn, formed with a shallow groove which, when in position, completes
the curve of the receptacle left for the reception of the wire or conductor.
are the grooves in the extension pieces c.
All the tongues and grooves are, preferably made interchangeable.
Figs. 5. and 6. shew another form of casing d, having a double set of grooves d¹ d³,
the covers e, and extension pieces h, being each formed with two tongues e¹ h¹; but
separate single tongued or other covers may be employed.
As a modification, the tougues of the covers may be dispensed with, and such
covers may be formed plain, or with a recess in lieu of the projection; likewise,
one casing may be placed upon and above another, and the two joined together
by covers which include both; and other variations in detail may be made, such
as the materials of which the casings are composed, their size, the shape of the
grooves, together with the particular mode of building up the casings, without
departing from the peculiar character of the invention.
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 means for supporting and protecting electrical conductors, a casing, or system

page_text: of casings, having the longitudinal grooves in their sides, wherein the conductors
may, when requisite, rest temporarily in position, before being finally enclosed by
the covers, in manner substantially as herein shewn and described.
Dated this 25th day of August 1894.
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent.