Improved Method of Forming Junctions between Electric Light Cables and Electric Lamps.
Year: 1892

page_text: Date of Application, 22nd Nov., 1892
Complete Specification Left, 2nd Aug., 1893-Accepted, 2nd Sept., 1893
PROVISIONAL SPECIFICATION.
Improved Method of Forming Junctions between Electric Light
Cables and Electric Lamps.
We FRANCIS WILLIAM WEBB of Chester Place Crewe, in the County of
Chester, Mechanical Engineer, and ARTHUR MOORE THOMPSON of Holly Bank
Crewe, in the County of Chester, Mechanical Engineer, do hereby declare the
nature of this invention to be as follows
The object of our invention is to provide a simple and expeditious means of con-
necting an electric lamp with the wires or cables carrying the supply current and
we accomplish our object in the following manner. If the negative and positive
supply cables or wires are running a considerable distance apart we bring them
closer together and we cover and as far as possible enclose a short length of each
wire or cable in a box constructed of porcelain, or other non-conducting material
which may be of any desired form, we then provide in the interior of the box and
enclosed in it, two metal terminal pieces secured to the box by screws or other
suitable fastenings and insulated from each other by the insulating material of which
the box is constructed. Each of these metal terminal pieces are placed in such a
position in relation to the supply wires or cables which pass through the box that
a metallic contact can readily be made between each terminal and the metal of the.
adjacent supply wire or cable. In the case of the supply wires or cables being
provided with insulation covering the connection may be conveniently made by a.
sharp pointed screw screwed through the terminal piece and then through the
insulation covering to the metal core of the cable or wire. We thus form a con-
nection between the supply cables or wires and the metal terminals, and to these
terminals the outgoing and return wires to the lamp may be connected unless it is
desired to introduce a fuse in which case we provide an extra terminal or terminals
for one or two fuse wires as desired.
Dated this 21st day of November 1809
F. W. WEBB.
A. MOORE THOMPSON.
COMPLETE SPECIFICATION.
Improved Method of Forming Junctions between Electric Light
Cables and Electric Lamps.
We, FRANCIS WILLIAM WEBB of Chester Place Crewe in the County of
Chester, Mechanical Engineer, and ARTHUR MOORE THOMPSON of Holly Bank
Crewe in the County of Chester, Mechanical 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 :-
The object of our invention is to provide a simple and expeditious means of con-
necting an electric lamp with the wires or cables carrying the supply current, and
we accomplish our object in the following manner. If the negative and positive
supply cables or wires are running a considerable distance apart we bring them
closer together and we cover and as far as possible enclose a short length of each
wire or cable in a box constructed of porcelain, or other non-conducting material,
which may be of any desired form. We then provide in the interior of the box
and enclosed in it two metal terminal pieces secured to the box by screws or other
suitable fastenings and insulated from each other by the insulating material of
which the box is constructed. Each of these metal terminal pieces are placed in
Price 8d.1

page_text: such a position in relation to the supply wires or cables which pass through the
box that a metallic contact can readily be made between each terminal and the
metal of the supply wires or cables. In the case, of the supply wires or cables
being provided with insulation covering the connection may be conveniently made
by a sharp pointed screw screwed through the terminal piece and then through the
insulation covering to the metal core of the cable or wire. We thus form a con-
nection between the supply cables or wires and the metal terminals, and to these
terminals the outgoing and return wires to the lamp may be connected, unless it is
desired to introduce a fuse, in which case we provide an extra terminal or terminals
for one or two fuse wires as desired.
In order that our invention may be more clearly understood we now proceed to
describe it in detail by the aid of the accompanying drawing.
b
Fig. 1, Sheet 1, is a section taken through the centre of the porcelain box,
through which pass the main cables and in which are contained the metal terminal
pieces. a is the positive lead of the main cable and the negative lead of the same,
these cables passing through grooves cc' constructed in the porcelain base piece
of the box, e is a second porcelain base piece secured to the base pieced by a bolt f.
Secured to this base piece e are two terminal brasses 9 h, and through these
terminal pieces g h are screwed two screws ij with pointed ends, so that as they are
screwed through they pierce the insulation covering of the cables a and b and make
contact with the copper core of the cable, as shewn. K is a porcelain cover secured
to the base piece e by a screw thread I, m is a hole in the porcelain cover k through
which the wires leading to an electric lamp may be led out.
9
Fig. 2 is a plan view of Fig. 1, the several parts being indicated by the same
letters. no are two terminal pieces connected with the terminal pieces hand g by two
fuse wires pq, and from these terminal pieces n and o are led away the wires
connecting with an electric lamp
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed or carried out, what
we claim is :-
1st. The formation of junctions between electric light cables and electric lamps
by means of a metal screw forced into contact with the copper core of the cable,
combined with a porcelain box or cover-piece containing the necessary fuse wires
and lamp terminals, substantially as described and illustrated by the drawing.
Dated this 1st day of August 1893.
F. W. WEBB.
A. MOORE THOMPSON.