HOLDING AND SUPPORTING INCANDESCENT ELECTRIC LAMPS
Year: 1884

page_text: I, EDWARD Cox WALKER Electrical Engineer Blackwellgate Darlington in the
County of Durham do hereby declare the nature of my invention for HOLDING
AND SUPPORTING INCANDESCENT ELECTRIC LAMPS to be as follows:-
That whereas, in incandescent Electric Lampholders hitherto made (1) the small
hooks which are passed through the terminal loops of the Lamp, give rise to a
considerable amount of resistance, in consequence of the minute point of actual
contact between them; and (2) that also there is much danger of breaking off
the said loops, and thus rendering the Lamps useless.
My present invention supplies a new form of Lamp holder giving (1) the best
possible contact between the wire terminals on the holder and the loops on the
Lamp; (2) holds the loops in such a way as to render them less liable to be broken;
and (3) provides a support for the Lamp where required.-The Body of my
holder may be made of wood, ebonite, or other suitable non-conducting material;
two flat metal springs, bent somewhat like the shape of the letter U, are fitted or
dropped into a groove in the body of the holder, and terminals attached; the
loops of the Lamps are placed between the tops of the legs of the U shaped
springs, & two screws, which pass thro' the sides of the body of the holder, nip
the spring tops together & hold the loops of the lamp perfectly firm & tight.-Or
the body of the holder itself may be nipped up by means of a screw, & thus close
the springs together on the loops. Or the two springs may be directly nipped by
means of screws passing thro' them, or pressing at the side or sides of them.
In cases where it is thought desirable to provide a support for the Lamp,
in addition to the nipping of the loops, this is provided by means of a fine stiff
wire, with a loop on the end to pass over the end of the Lamp furthest from the
holder; the other end of the supporting wire slides on the side of the body of the
holder, where it is held by a spring, or other similar means, thus giving a frictional
adjustment. Or this support may consist of a fine wire spring or springs attached

page_text: to the Lamp-holder, having a loop, or curved portion, which may be passed around
(wholly or partly,) the outer end of the Lamp thus giving the necessary support.
Having now described the nature of my invention, I claim as my invention
(1.) The nipping of the loops or terminals of the internal filament of incandescent
Electric Lamps for the purpose of making connection therewith.
(2.) The stiff wire support, as described, with frictional adjustment.
(3.) The spring wire, or other support, having a loop or curved portion passing
around or about the outer end of incandescent Lamps beyond the point of largest
Diameter.
COMPLETE SPECIFICATION.
Holding and Supporting Incandescent Electric Lamps.
I, EDWARD Cox WALKER, Electrical Engineer, Blackwellgate & Cleveland
Parade Darlington in the County of Durham do hereby declare the nature of my 1
invention for HOLDING & SUPPORTING INCANDESCENT ELECTRIC LAMPS and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
That whereas in incandescent Electric Lampholders hitherto made (1) the small
hooks which are passed through the terminal loops of the Lamps give rise to a 2
considerable amount of resistance in consequence of the minute points of actual
contact between them; and (2) that there is much danger of breaking off the said
loops & thus rendering the Lamps useless.
My present invention supplies a new form of Lampholder giving (1) the best
possible contact between the wire terminals on the holder & the loops or terminals 2
on the Lamp; (2) holds the loops in such a way as to render them less liable to be
broken; &(3) provides a support for the Lamps where required.
The body of my holder may be made of wood, ebonite, or other suitable non-
conducting material; two metal springs, or pieces of metal, bent, made, or cut
somewhat like the shape of the letter U are fitted or placed in a groove or
opening in the body of the holder, & terminals attached; the loops or terminals
on the Lamps are placed between the tops or sides of the U shaped springs or
pieces of metal, or conducting material, & two screws passing thro' the sides of
the body of the holder nip the springs or pieces of metal together, & hold the
lamp loops or terminals perfectly firm & tight; Or the body of the holder itself
may be nipped up by means of a screw or screws & thus close the springs or

page_text: pieces of metal together onto the loops or terminals; Or the two springs or pieces
of metal or conducting material may be nipped directly by means of a screw or
screws passing thro' them, or pressing at the side or sides of them.
In cases where it is thought desirable to provide a support for the Lamp in
addition to the nipping & holding of the loops or terminals, this is provided by
means of a stiff wire with a loop or curved portion on the end to pass over,
around, or on to the end of the Lamp furthest from the holder; the other end of
the supporting wire sliding on the side of the body of the holder where it is held
by a spring, or other suitable means, thus giving a frictional adjustment.-Or this
support may consist of a fine wire spring, or springs attached to the Lampholder &
having a loop or curved portion which may be passed over or around (wholly or
partly) the outer end of the Lamp thus giving the necessary support.
Having now particularly described & ascertained the nature of my said
invention & in what manner the same is to be performed, I declare that what
I claim is
1. The nipping of the loops or terminals of the internal filament of incandescent
Electric Lamps for the purpose of making connection therewith.
2. The wire support, as described, with frictional adjustment.
3. The spring wire or other support having a loop or curved portion passing
around or about the outer end of incandescent Lamps beyond the point of largest
Diameter.
Dated thin and
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