IMPROVEMENTS IN ELECTRIC LAMPS
Year: 1882

page_text: LETTERS PATENT to Joseph Samuel Beeman of 182 Earls Court Road in
the County of Middlesex for an Invention of IMPROVEMENTS IN ELECTRIC
LAMPS
PROVISIONAL SPECIFICATION left by the said Joseph Samuel Beeman
at the Office of the Commissioners of Patents on the 11th July 1882.
JOSEPH SAMUEL BEEMAN of 182 Earls Court Road in the County of Middlesex,
"IMPROVEMENTS IN ELECTRIC LAMPS,"
.
The improvements relate to electric incandescent and are lamps or lights and
consist as regards incandescent lamps in the use of mica or tale with or without.
reflectors or reflecting surfaces in the construction of such lamps, in the following
manner and for the purposes set forth.
I take mica or talc or other non-conducting semi-transparent matter of convenient
size and thickness and use it to act, in case of necessity, as a support or supports
for the carbon filament and so neutralize leverage and by acting as a non conducting
diaphragm tend to arrest the deposit of carbon particles on either side or on
various parts of the filaments as at present-and in some cases to act as a reflector
in addition, by plating parts of the mica or otherwise treating it to give it a
reflective surface or by using in combination silvered glass, or metal or other
reflectors. And as regards arc lamps the invention consists in using the mica or
tale as a shield or tube round or about the arc points to arrest and if necessary to
collect also the sparks and prevent the passage of flame.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Joseph Samuel Beeman in the Great Seal Patent Office on the
11th January 1883.
JOSEPH SAMUEL BEEMAN, of 182 Earls Court Road, in the County of Middlesex,
IMPROVEMENTS IN ELECTRIC LAMPS
The improvements relate to electric incandescent and arc lamps or lights and
consist as regards incandescent lamps in the use of mica or talc or other non-
conducting material with or without reflectors or reflecting surfaces in the
construction of such lamps, in the following manner and for the purposes set forth.
I take mica talc or other non-conducting semi-transparent matter or material of
convenient size and thickness and use it to act (in case of necessity) as a support
or supports for the carbon filament and so neutralize leverage and by sometimes
acting as a non-conducting diaphragm tend to arrest the deposit of carbon particles
on either side or on various parts of the filaments as at present and in some cases
to act as a reflector in addition, by plating parts of the mica or otherwise treating
it to give it a reflective surface or by using in combination silvered glass, or metal or
other reflectors. And as regards are lamps the invention consists in using the mica
or talc or other material as a shield or tube round or about the arc points to
arrest and if necessary to collect also the sparks.
The drawings hereunto annexed show various modes in which the invention can
be performed. Figures 1, 2, 3, 4, 5, 6, 7; 8 show various methods of fixing the
shield of mica, talc, glass &o, so as to serve as a support (in case of need) to the
carbon filament, and also tending to arrest the deposit of particles of carbon
between one portion of the filament and the other in all the figures like letters
represent like parts. A is the globe. B carbon filament. C shield. C¹ reflector.
C reflector or shield or both. Č³ support for carbon filament. C' shield for arc
lamps. D conducting wires to and from the carbon filament. E a metal clip for
holding shield or reflector in position-where not held by such a clip the shield or
reflector is held in position by glass. Fand H are carbons in arc lamps. I support
for shield C. In Figure 4 a portion K of the shield acts as a reflector by being
coated with reflective surface. Figs 6 and 9, O' is another mode of reflecting.
Figure 9 being a side view of Figure 6 drawn on a different scale. Figs 10, 11,
12 and 13 show in plan various ways of fixing reflective shield to act as a softener
of the light. Figure 14 shows another method of fixing the reflective shield.
Fig 15 and 18 show a mode of fixing mica or other material to act (in case of
necessity) as a support C³ to the carbon filament. Figs 21 and 22 show the
mica or other material so fixed to act as a reflector and shield (the portion K
being made reflective). Fig. 16, 17, 19 and 20 show a glass tubular shield C
inserted between the carbon filaments to act as a reflector, this tube is closed at
one end and may be open at the other so as to allow of the interior being silvered
or filled with divers colored liquids. Figs 23 and 24 show the shield Capplied
to arc lamps in order to arrest and collect the scintillations of carbon.
I claim The use of mica, talc, glass or other non-conducting material, as a
possible support to the carbon filaments, and as a reflector and shield either alone
or in combination substantially as illustrated and described and for the purposes
set forth.
In witness whereof I the said Joseph Samuel Beeman have hereunto set my
1000