AN IMPROVED PI PATROLLER ELECTROLIER
Year: 1882

page_text: LETTERS PATENT to The Honorable Reginald Brougham of Heddon Street
Regent Street in the County of Middlesex for an invention of "AN IMPROVED
PI PATROLLER"
PROVISIONAL SPECIFICATION left by the said Reginald Brougham at the
Office of the Commissioners of Patents on the 17th March 1882.
The Honorable REGINALD BROUGHAM of Heddon Street Regent Street in the
County of Middlesex "AN IMPROVED ELECTROLIER
"
This Invention has for its object an improved electrolier.
This electrolier is intended for the exhibition of several electric lamps of the
incandescent type. It consists of a tubular stem or upright descending from the
ceiling of the room to be lighted or fixed vertically in a suitable standard or
otherwise suitably supported. There is a collar upon the stem near its end and
beyond this again a flanged nut is screwed upon the stem.
Between the collar and the nut two metal plates of ornamental form are clamped
and beld. These plates are kept apart by a thick disc of vulcanite (or other
non-conductor) and thinner discs of like material serve to insulate the plates from
the collar and the nut upon the stem. The parts of the plates overhanging the
separating disc are formed with radial grooves on their inner surfaces. The neck
of the lamp or glass bulb in which the carbon filament is enclosed is set into a
socket of vulcanite or other material and two brass springs or plates are fixed to
the exterior of this socket diametrically opposite to each other to these springs or
plates the wires which enter the glass enclosure are attached. Each lamp when
thus set into a socket is inserted between the two plates carried by the stem or
upright of the electrolier and the springs or plates entering the radial grooves serve
to hold the lamps in place. The same springs provide the electrical connections
for the filaments, the plates being in connection with the electric source.
Con-
ducting wires pass down the interior of the stem, and are brought out through a
hole in the separating disc of vulcanite or other insulating material and connected
to the plates.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Reginald Brougham in the Great Seal Patent Office on the
16th September 1882.
The Honorable REGINALD BROUGHAM of Heddon Street Regent Street in the
County of Middlesex "AN IMPROVED ELECTROLIER."
This invention has for its object an improved electrolier.
This electrolier is intended for the exhibition of several electric lamps of the
incandescent type. It consists of a tubular stem or upright descending from the
ceiling of the room to be lighted or fixed vertically in a suitable standard or
otherwise suitably supported. There is a collar upon the stem near its end and
beyond this again a flanged nut is screwed upon the stem.
Between the collar and the nut two metal plates of ornamental form are clamped
and held. These plates are kept apart by a thick disc of vulcanite (or other
non-conductor) and thinner discs of like material sorve to insulate the plates, from
⚫the collar and the nut upon the stem. The parts of the plates overhanging the
separating disc are formed with radial grooves on their inner surfaces. The neck
of the lamp or glass bulb in which the carbon filament is enclosed is set into a
socket of vulcanite or other material and two brass springs or plates are fixed to
the exterior of this socket diametrically opposite to each other; to these springs
or plates the wires which enter the glass enclosure are attached. Each lamp when
thus set into a socket is inserted between the two plates carried by the stem or
upright of the electrolier and the springs or plates entering the radial grooves serve
to hold the lamps in place. The same springs provide the electrical connections
for the filaments, the plates being in connection with the electric source.
ducting wires pass down the interior of the stem, and are brought out through a
hole in the separating disc of vulcanite or other insulating material and connected
to the plates.
Con-
In order that my said invention may be most fully understood and readily

page_text: The glass neck of the lamp fits into a socket of vulcanite g; to the outside of
the socket two metal springs h, h, are rivetted and the springs are also connected
metalically with the wires upon which the carbon filament is mounted.
When the lamps are in place in the electrolier the springs are received into the
grooves in the plates c, c; one spring of each lamp being in a groove of the upper
plate and the other in a groove of the lower plate. The plates are at such a
distance apart that the springs are somewhat compressed in entering between the
plates and so they make firm and good contacts to carry the current forward to
the filament. The springs also serve mechanically to hold the lamps securely in
in their places in the electrolier.
Without material alteration except in ornamental detail the electrolier may be
employed with the stem fixed to the floor as a standard. The glass bowl in that
case is dispensed with as it often may be when the electrolier is attached to a
ceiling.
Having thus described the nature of my said invention and the manner of per-
forming the same I would have it understood that I claim my improved electrolier,
substantially as described.
In witness whereof I the said Reginald Brougham have hereunto set my
hand and seal this Fifteenth day of September in the year of our Lord
One thousand eight hundred and eighty two.
REGINALD BROUGHAM. (L.S.)