Improvements in Electric Lamp Fittings.
Year: 1893

page_text: Date of Application, 5th Dec., 1893
Complete Specification Left, 31st Aug., 1894-Accepted, 27th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in Electric Lamp Fittings.
I, ARTHUR JAMES HOWES, of 29 Halley Road, Forest Gate, in the County of
Essex, Electrical Engineer do hereby declare the nature of this invention to be as
follows:-
My invention relates to improvements in electric lamp fittings, and has for its
may be
objects the production of a standard pendant, or side bracket which
lengthened or contracted at will, without the employment of chains, weights or
other cumbrous counterbalances, and is also capable of lateral movement in any
direction, so that, in any case of its adoption, the point of light may be raised;
lowered, extended, withdrawn, or angularly directed according to requirement.
Also, the connections of the lamp with the main leads, or branches are effected
without soldering, and are completely insulated from the metallic body of the
device, and are not liable to deterioration or injury by reason of the several
movements.
In carrying my invention into effect I use two or more tubes, the first being
attached to a suitable base plate, and the next sliding telescopically within it, and
the next within this, and so on to the extent of the series, it is, however, so
In order to avoid
arranged, that when closed, the length is that of the first tube.
the use of counterweights or the like, or of any balancing device, I sweat upon,
or otherwise attach a collar to the extreme end of each tube fitting within another,
thus enlarging the said end to fit the tube, or I may spin, or otherwise form an
enlarged end upon said inner tube. Said enlargement is split at one or more
points in its circumference in a direction parallel to the axis of said tube, by a' saw
slit, so that the outward spring thus afforded may cause sufficient grip upon the
external, or containing tube to retain the weight of the lamp and fittings at any
desired point. Suitable screw or other caps, plain or ornamented may be fitted to
the end of each or any tube.
:
The last tube of the series is furnished with a screwed collar, the internal borè
of which is coned or tapered, said collar being fitted, upon its screwed outer
surface, with a cap, which is tapered internally in an opposite direction to that of
the bore of the collar aforesaid. The two hold between them a hemispherical
hollow cup, terminating in a hollow stalk carrying a lamp holder. This arrange-
ment allows of the latter being diverted angularly in any direction, and held in
position by a slight tightening of the cap upon the screwed collar. The wires
pass from the ordinary lamp holder connections through the stalk and series of
tubes, being coiled spirally to admit of the longitudinal extension and contraction,
and terminating at an insulated plate, provided with screws for connecting to the
leads, within the base plate. The shape of the hollow cup, and its enclosing
cones, admits of lateral or angular movement without damaging the wires. In
cases where the weight to be carried is great, and consequently the friction
necessary for retention is excessive I may provide one or more packed glands in
addition to the device hereinbefore described.
My invention is applicable to any kind of lamp, holder, ornamental ceiling
rose, wall base, or standard base, and may be furnished with any number of tubes
as herein described, to extend to any desired length, and the terminal stalk, may le

page_text: so constructed as to carry more than one lamp and holder if necessary, the
conductors and connecting terminals being also arranged to suit these conditions.
Dated this 1st day of December 1893.
FREDK. WALKER,
73, St. Stephen's Road, Upton Park, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Electric Lamp Fittings.
I, ARTHUR JAMES' HOWES of 29 Halley Road, Forest Gate in the County of
Essex, Electrical 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 production of a standard or pendant for
electric lamps, which may be lengthened or contracted at will without the employ-
ment of weights, chains or other cumbrous attachments or counterbalances, and is
also capable of lateral movement in any direction, so that in any case of its
adoption, the point of light may be raised, lowered, extended, withdrawn, or
augularly directed according to requirement. Also the connections of the lamp
with the main leads or branches are effected without soldering, and are completely
insulated from the metallic body of the device, and are not liable to deterioration
or injury by reason of the several movements.
In order that my said invention may be the better understood, I have appended
the accompanying sheet of drawings, in which
Figure 1 is a longitudinal section of the device, and Figure 2 a perspective
drawing of the end of one of the sliding tubes, drawn to a larger scale.
In carrying my invention into effect I employ a base plate A, which is provided
with a socket for holding a tube C, into which slides a second tube e which fits
quite loosely as shown, but is provided with a collet E at its extremity, shewn
more particularly by Figure 2 which is similarly lettered. A saw slit a is cut
through both the collet E and the tube e and by expansion affords sufficient friction
within the tube C to hold it in any position in which it may be placed, indepen-
dently of ordinary wear and tear. Any required number of these tubes e may be
arranged to slide one within the other, the lowest or last tube terminating with a
hollow stalk H, adapted to receive a lamp holder, and carrying the conductors
therefor. Said stalk H is formed with, or attached to a hollow ball F within a
screwed socket G fitted to the base of e, so that the lamp may be placed angularly
in any direction, and the stalk H there fixed by slightly tightening the socket G.
A plug of insulating material B, is provided with terminal screws for attaching
the main or branch leads to the conductors of the lamp. These preferably consist.
of any double twisted insulated wires, and are coiled to allow of the extension and
withdrawal of the tubes, the elasticity of said wire causing it to resume its position
as a close coil when closed right up. Two distinct conductors are used to avoid the
necessity for body contact in the device.
It is obvious that my said invention may be adapted as a pendant, wall bracket
or standard, and may consist of as many lengths of pipe as may be necessary.
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,
J
First. In a pendant, wall bracket, or standard for electric lighting, the combina-
tion of an outer tube, with an inner tube having a split collet, and a terminal stalk
with a universal joint, coiled conductor and insulating, terminal plug, substantially
as herein described and shown.

page_text: Second. In a pendant, wall bracket or standard for electric lighting, the
employment of telescopic tubes with split collets substantially as herein described
and shown.
Dated this 30th day of August 1894.
FREDK. WALKER,
73, St. Stephen's Road, Upton Park, E., Agent for the Applicant.