Improvements in Electric Arc Lamps.
Year: 1897

page_text: Date of Application, 23rd Nov., 1897
Complete Specification Left, 17th Jan., 1898- Accepted, 26th Feb., 1898
PROVISIONAL SPECIFICATION.
Improvements in Electric Arc Lamps.
PETER SPIES, 3, Fossdene Road, Charlton, Kent, Electrical Engineer,
WILLIAM HENRY NEWALL, 25, Brampton Road, South Hackney, N.E., Boot
Manufacturer, ALFRED WILLIAM SHOUT, 10, West Ferry Road, Millwall, E.,
Coffee House Keeper, do hereby declare the nature of this invention to be as
follows:-
In electric are lamps the means for enclosing the arc for purposes
of softening the light with or without the use of opal globes. These improvements
consists of series of glass tubes placed round the arc held in position by two flexible
metalic rings, insulated one ring from the other, in which way the lower ring is
used as carbon holder, thereby the light becomes unobscured and free from
shadows which are usual in ordinary arc lamps.
The arrangement for striking the arc. We use for this purpose, two metallic
plates, hinged together, in the centre of the hinged lines is a bored hole through
which the carbon passes.
When the current is switched on, the magnet raises the armature connected
with the plates which grip the carbon to strike the arc.
When the carbon is burnt away the armature sinks till the hinged plates touch
a ring upon which they rest, thus allowing the carbon to slide down and further
supply the lamp. Also an arrangement for supplying the electric current with-
out sparking by fixing a series of metallic springs to the body of the lamps,
through which the carbon works in contact.
P. SPIES.
W. H. NEWALL.
A. W. SHOUT.
We, PETER SPIES, of 3, Fossdene Road, Charlton, Kent, Electrical Engineer,
WILLIAM HENRY NEWALL, 25, Brampton Road, South Hackney, London, N.E.,
Boot Manufacturer, ALFRED WILLIAM SHOUT, 10, West Ferry Road, Millwall, E.,
Coffee House Keeper, 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:―
Our invention relates to the construction and arrangements of the several parts
of electrical arc lamps, as hereinafter described.

page_text: An arrangement for enclosing the arc for the purposes of softening the light.
The invention is shown in sectional elevation of drawings Fig. 1 and in
horizontal section Fig. 2,
We use for this purpose a series of glass tubes A around the are held in position
by two metallic ring plates B & C the lower one C being insulated and supports
the negative carbon D the upper ring plate B being fixed to the bottom plate of
the lamp E. The glass tubes A aforesaid are held in position by metallic rods F
passing through them and attached by screws or other means to the ring plates B
& C..
An arrangement for striking the arc as shown in Figs. 1, 3, & 4.
We use for this purpose two metallic plates G hinged together and suspended
by four strips of brass H to carbon holding tube I in centre of hinged plates G
a hole is bored through which the positive carbon J passes.
When the lamp is at rest the hinged plates G lay flat on the bottom plate of
the lamp E in which position the hole in centre of hinged plates G is a true
circle allowing the positive carbon J to slide down and make contact with the
negative carbon D.
When the current is switched on the electro magnet K attracts the armature L
causing it to lift the carbon holding tube I on which the hinged plates G are
suspended by four metallic strips II, when so raised the hole in centre of the
hinged plates G partly closes and grip the positive carbon J to strike the arc.
As the carbon burns away the carbon holding tube I falls of its own weight
allowing the hinged plates G as before described to touch the bottom plate of
lamp E thus releasing the carbon to further supply the lamp.
In electric arc lamps the means for preventing sparking destroying the contacts,
we use a series of flat copper springs M, one half sliding in contact against body
of the lamp N, the other half works in contact with the positive carbon J, the flat
copper springs M as aforesaid are attached to the carbon holding tube I by this
means we prevent the failing of contact also sparking and so keep up a regular
and clean contact which are shown in Figs. 1 & 4.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare what we
claim is:.
1. In electric arc lamps the means for softening the light by the use of a series
of glass tubes fastened together by two metallic ring plates around the arc as
before described.
2. In electric are lamps the arrangements for holding and controlling the upper
and positive carbon we use two metallic plates hinged together through which a
hole is bored through centre of the hinged line which being worked by the
armature as before described partly closes and grip the carbon to strike the arc.
3. In electric are lamps the means for preventing sparking and destroying
the contacts we use a series of flat copper springs one half sliding in contact
against body of lamp and the other half resting against the positive carbon as
before described.
41T
0 T
1000