An Improved Electric Arc Lamp.
Year: 1894

page_text: Date of Application, 22nd Feb., 1894
Complete Specification Left, 14th Nov., 1894-Accepted, 15th Dec., 1894
PROVISIONAL SPECIFICATION.
An Improved Electric Arc Lamp.
I, ALBERT EDWARD JONES, of Fiume, in the Kingdom of Hungary, Engineer,
do hereby declare the nature. of this invention to be as follows:-
My invention has for its object an improved electric arc lamp.
The upper carbon holder traverses upon a screw by means of a nut.
The nut
can be disengaged from the screw for the purpose of raising the upper carbon
holder to renew the carbons.
The screw rotates in a bearing, which bearing is raised by a bell crank lever
attached to the armature of an electro-magnet whose coils are in the main circuit
the arrangement described serving to strike the arc.
The upper carbon is caused to approach the lower carbon, as the carbons are:
consumed by the rotation of the screw.
c
The said screw is rotated by the action of a pawl on a ratchet wheel, the said
pawl being at one extremity of a lever carrying an armature acted upon by an
electro-magnet whose coils are in the shunt circuit, that is in parallel with
the arc.
As the current passing through the electro-magnet gets stronger by the
increasing resistance of the arc, the armature is gradually attracted, against the
opposition of the spring, the pawl slipping over the teeth of the wheel; when
the armature and its lever have arrived at a certain position, the shunt circuit, in
which are the coils of the electro-magnet is broken by the contact breaker, and
the lever and armature fly back, impelled by the spring the pawl thus pushing
round the ratchet wheel, rotating the screw and lowering the carbon holder.
This action is continued until a balance is established between the attraction of
the electro-magnet and the pull of the spring.
Dated this 22nd day of February 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
I, ALBERT EDWARD JONES, of Fiume, in the Kingdom of Hungary, 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 has for its object the construction of an improved electric arc
lamp.
In the accompanying drawing
Figure 1 is an elevation of the upper part of the lamp containing the operating
mechanism some of the parts being omitted.
C
Figure 2 is a section on line 2, 2 Figure 1 some of the parts in this view also
being omitted.
Figure 3 is a plan and

page_text: •
The upper carbon holder a traverses upon the screw b by means of a nut c
Figures 2 and 4, the said nut c being adapted to be disengaged from the screw b
for the purpose of raising the upper carbon holder to renew the carbons.
The screw b rotates in a bearing d, which bearing is raised by a bell crank
levere attached to the armature f of an electro-magnet g the coils of which are in
the main circuit, the arrangement described serving to strike the arc.
The upper carbon is caused to approach the lower carbon, as the carbons are
consumed by the rotation of the screw b.
The said screw bis rotated by the action of a pawl h Figure 3 on a ratchet
wheel j, the said pawl h being at one extremity of a lever k carrying an armature
acted upon by an electro-magnet m whose coils are in the shunt circuit, that is in
parallel with the arc.
As the current passing through the electro-magnet m gets stronger by the
increasing resistance of the arc, the armature is gradually attracted, against the
opposition of the spring n, the pawl h slipping over the teeth of the wheelj; when
the armature and its lever k have arrived at a certain position, the shunt circuit,
in which are the coils of the electro-magnet m is broken by the contact breaker o,
and the lever k and armature fly back, impelled by the spring n the pawl h thus
pushing round the ratchet wheel j, rotating the screw b and lowering the carbon
holder a Figure 3.
This action is continued until a balance, is established between the attraction of
the electro-magnet m and the pull of the spring n.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
In an electric arc lamp, the combination of the parts substantially as shown and
described and for the purposes set forth.
Dad thin 14th day of November 1904
Dated this 14th day of November 1904.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.