Year: 1890

page_text: Date of Application, 27th Aug., 1890-Accepted, 27th Sept., 1890
1, WILLIAM WHITE, of 58 Bread Street, in
the City
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 relates to fittings for connecting electrical conductors to glow lamps
in apartments, these conductors being generally arranged in the walls or ceilings.
For making connection to conductors in a side wall I employ a set of fittings such
as are shewn in Figs. 1 to 5 inclusive of the accompanying drawings.
Fig. 1 is a section and
Fig. 2 a front view with cover removed of the piece fixed to the wall,
Fig. 3 is a section,
Fig. 4 is a side view and
Fig. 5 a plan of top end of the plug employed to make connection of the conductors
in the wall to the conductors of the lamp.
The line wires L L' are connected respectively to two pieces preferably double of
bent metal A A¹ which are fixed on a base B of insulating material and covered by a
cap screwed on the base.
The plug P of insulating material is grooved at opposite sides and has pieces M of
metal fixed in the grooves. The insulated lamp wires W W₁ proceed from screws in
these metal pieces through a divided cone secured in the end of the plug by a nut.
On thrusting the plug into the wall fitting, the metal pieces M sliding along the faces
of the pieces A make the required electrical connections from the line wires L to the
lamp wires W. It is preferred to increase a little the width of the plug towards m m
so that when it is thrust in, it is held firmly by the spring of the pieces A A.
For connecting to conductors in the ceiling I employ the fitting shewn by Figs. 6
and 7. The base B of insulating material is fixed up against the ceiling in an
inverted position. On this base are fixed three similar metal pieces A¹ A² A³, each
being held by a screw screwed into the base B and each having two screws for
holding conducting wires. The one line wire L connects to A¹ which connects to A²
through a safety fuse F. From A2 one wire W proceeds to the lamp along one of
two helical grooves formed in the central nipple N. The return wire W₁ from the
lamp passes along the other helical groove to A³, and to A³ is connected the other line
wire L'.
A сар C is screwed on the base B and an elastic ring R held in a groove of the cap
steadies the lamp wires in the helical grooves of N and forms a tight joint. The lamp
wires W W proceeding from the conductors in the wall or the ceiling are connected
to a lamp socket shewn in Figs. 8, 9 and 10, Fig. 8 shewing the insulating piece or
base B in elevation and the socket in section, Fig. 9 being a section and Fig. 10 a
plan of the base B. The sockets S S¹ for the spring contact plugs, are sunk nearly
their whole depth in recesses formed in the insulating base B. The lamp wires W W¹
pass along the tube T the one W to the base of the socket S, the other W' to the base
of the socket S¹.
When the neck of the lamp is inserted in the socket its contact pieces pressing on
the spring plugs, and is held as usual by the bayonet catch, the connection of the line
wires to the lamp is completed.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim in respect of fittings for electrical glow lamp conductors is :-
1. The wall connection substantially as described with reference to Figs. 1, 2, 3, 4

page_text: 2. The ceiling connection, substantially as described with reference to Figs. 6
and 7.
3. The lamp socket connection, substantially as described with reference to Figs. 8,
9 and 10.
Dated thin 97th days of 1900
ABEL & IMRAY,
Agents for the Applicant.