A Combined Switch and Electric Lamp Support for Public and Private Conveyances.
Year: 1887

page_text: Date of Application, 14th Dec., 1887
Complete Specification Left, 13th Aug., 1888
Complete Specification Accepted, 14th Dec., 1888
PROVISIONAL SPECIFICATION.
A Combined Switch and Electric Lamp Support for Public and
Private Conveyances.
We JAMES WILLING the Younger of 125 Strand, Advertisement Contractor, and
ARTHUR DOUGLAS DOUGLASS of 113 Dalling Road Hammersmith Electrical Engineer
both in the County of Middlesex do hereby declare the nature of this invention to be
as follows:-
The object of this invention is to simplify the adaption of electric lighting in
Omnibuses and other public and private conveyances.
It consists of a movable board into which the lamp is fixed, this board is made to
move on the face of another board fitted either to slide backwards or forwards, from
left to right or in a circular manner, on the back of the movable board, which supports
the lamp, are fitted, flush with the surface of the back of movable board, brass (or
some other good conductive metal) plates from which are taken the wires or con-
nections which pass through the board to the Incandescent lamp.
On the back board or base are fitted two brass (or some other good conducting
metal) springs which are connected direct to terminals fitted on the back.
The movable board is fitted to the base board by a grooved rim, which in the hori-
zontal form permits of the moving board being pushed from left to right or vice-versa
on the base board, and in the circular form with a twist from left to right or vice versa
on the circular base.
The position of the metal plates and springs is so arranged that when the movable
board, which supports the lamp, is in one position on the base board each of the two
springs shall be separately in contact with the two metal plates and when the movable
board is reversed in position, one at least of the springs shall leave one of the plates,
thus when in the position that each metal spring presses on each metal plate there is
complete metalic connection, and when in the position the one spring is off the one
plate there be no metallic connection from the terminals at the back of base board
to the lamp on the front of the movable board-thus forming the switch.

page_text: To prevent the moving board (with lamp on it) from jolting out of its position
when once placed in same the springs are fitted at the ends with a raised, half ball
shaped piece of metal which fits into a hole of similar circumference made in the
brass, or other good conducting metal, plates, thus locking the movable board and
preventing the springs leaving the plates by the jolting of the conveyance whilst in
motion.
COMPLETE SPECIFICATION.
A Combined Switch and Electric Lamp Support for Public and
Private Conveyances.
We JAMES WILLING the younger of 125 Strand Advertisement Contractor and
ARTHUR DOUGLAS DOUGLASS of 113 Dalling Road Hammersmith Electrical Engineer
both in the County of Middlesex 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 this invention is to simplify the adaption of Electric Lighting in
Omnibuses and other public and private conveyances, it consists of a movable
board (1 Figs. 1-4) on to which the lamp is fixed, this board is made to move
on the face of another board (2 Figs. 1-4) and fitted either to slide backwards
or forwards from left to right or in a circular manner. On the back of the
movable board which supports the lamp are fitted brass (or some other good con-
ducting metal) plates (3 Figs. 1-4) from which are taken the wires or connections
which pass through the board to the incandescent lamp. On the back board or
base are fitted two brass (or some other good conducting metal) springs (4 Figs. 1-4)
which are connected direct to terminals (5 Figs. 3-5) fitted on the back. The
movable board is fitted to the base board by grooved rims (6 Fig. 2) slotted
plates (6 Fig. 5) or any other such like manner as to allow perfect freedom of action,
which, in the horizontal form, shall permit of the moving board being pushed from
left to right or vice-versa on the base board and in the circular form with a twist from
left to right or vice versa on the circular base. The position of the metal plates and
springs is so arranged that when the movable board which supports the lamp is in one
position on the base board, each of the two springs shall be separately in contact with
the two metal plates and when the movable board is reversed in -position one at least

page_text: of the springs shall leave one of the piates thus, when in the position that each
metal spring presses on each metal plate there being complete metallic connection
from the terminals on the back of the base board to the incandescent lamp on the
front of the moving board, and when in the other position the one spring is off the
one plate there being no metallic connection from the terminals at the back of the
base board to the incandescent lamp on front of the moving board, thus forming
the switch. To prevent the moving board (with lamp on it) jolting out of its position
when once placed in same the springs are fitted at the ends with a raised half
ball shaped piece of metal (7 Figs. 3-5) which fits into a hole of similar cir-
cuinference made in the metal plates, thus locking the board and preventing the
springs leaving the plates by the jolting of the conveyance whilst in motion.
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 :-
1st. An arrangement of sliding Boards, springs and plates substantially as set
forth.
2nd. Simplicity by these means in the adaption of the Electric Light to Trams
'Buses and any other public or private conveyance.
Dated this 11th day of August 1888.
HARRISON & DAVIS,
Agents for Applicants.