Improvements in Electric Aro Lamps.
Year: 1892

page_text: Date of Application, 11th Feb., 1892
Complete Specification Left, 11th Nov., 1892-Accepted, 17th Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Electric Aro Lamps.
I HENRY TIPPING of 38 Crooms Hill Greenwich in the County of Kent,
Mechanical Engineer do hereby declare the nature of this invention to be as
follows:-
My invention relates to improvements in means or apparatus for use in the
regulation of the feed of arc lamps.
In carrying out my invention I either employ a rack (which holds the upper
carbon of an arc lamp) a pinion working into the rack and a large toothed wheel
(or wheels) which actuate the said pinion for raising or lowering the rack or I
employ a barrel and chain wire or cord or I use an equivalent means of suspension.
When employing the rack arrangement or its equivalent I perform the operation of
regulating the arc by gearing a small rack or equivalent means of releasable
engagement or stop onto the large toothed or other wheel this small rack or
engageable stop is operated by the movement of an armature in a solenoid much
in a usual way an arm attached to the centre pivot on which the armature
swings or equivalent supporting point engages with one end of the small rack
which gears into the large toothed wheel where that system is used or in equivalent
manner for the barrel and the movement of this arm in a direction to and fro as
the armature rises or falls in the solenoid, causes the large toothed wheel to be
actuated and thus raises or lowers the rack or other supporting means which holds
the upper carbon. In order to obtain the feed as the carbons burn away I provide
a rod or like means to be operated by the armature so that this rod or like means
shall have a similar movement to that of the armature and which rod or like
means of attaining this movement actuated by the armature being drawn into the
solenoid, at a suitable point lifts the small rack out of gear with the large toothed
wheel or similarly actuates the like part and owing to the height of the rack or
stop, the large toothed or other wheel having been liberated moves round and
allows the carbons to approach each other the instant this occurs, the armature
falls and the small rack or stop at once reengages the teeth or part of the large
wheel, and the armature again rises in the solenoid as the carbons waste, and the
operation of feed is thus rendered approximately continuous.
Dated the 11th day of February 1892.
COMPLETE SPECIFICATION.
Improvements in Electric Aro Lamps.
I HENRY TIPPING formerly of 38 Crooms Hill, but now of 38 South Street,
Greenwich in the County of Kent, 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 :-
My invention relates to improvements in means or apparatus for use in the
regulation of the feed of arc lamps.
In carrying out my invention I either employ a rack (which holds the upper
carbon of an arc lamp) a pinion working into the rack and a large toothed wheel
(or wheels) which actuate the said pinion for raising or lowering the rack or I can
employ a barrel and chain wire or cord or any equivalent means of suspension but
all these devices are well understood and easily substituted for the rack arrange-
ment described' and shewn. When employing the rack arrangement or its equivalent

page_text: Having now particularly described and ascertained the nature of my said iuven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The arrangement or combination and use of parts of an electric arc lamp so
that the feed of the carbons is controlled by means of rack and wheel work, or
equivalent mechanism, regulated as to the recurrence of the feed by means of an
inclined surface and pivot cooperating therewith or equivalent device, to effect
disengagement of the armature and parts actuated by it, substantially as and for the
purpose set forth.
2. In an electric arc lamp the arrangement of parts for supporting and controlling
the movement of the carbons in combination with means for regulating the recurrence
of the feed as and for the purpose set forth.
Deted the 5th day of November 1802.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.
ROOT 100AXOLY TO ARD HQ AT TAI