IMPROVEMENTS IN CARBONS FOR INCANDESCENT ELECTRIC LAMPS"
Year: 1883

page_text: LETTERS PATENT to James Wavish, of Forest Gate in the County of Essex,
John Warner of Whitechapel in the County of Middlesex and Mark Bailey, of
Argyle Square, King's Cross in the said County of Middlesex for an Invention
of "IMPROVEMENTS IN CARBONS FOR INCANDESCENT ELECTRIC LAMPS"
PROVISIONAL SPECIFICATION left by the said James Wavish, John
Warner, and Mark Bailey at the Office of the Commissioners of Patents on
the 10th November 1883.
JAMES WAVISH, of Forest Gate in the County of Essex, JOHN WARNER, of
Whitechapel in the County of Middlesex, and MARk Bailey, of Argyle Square,
Kings Cross, in the said County of Middlesex, "IMPROVEMENTS IN CARBONS FOR
INCANDESCENT ELECTRIC LAMPS"
"
Our Invention has partly for its object to effect an improvement on the carbon
described in the Specification of Letters Patent N° 39 granted to us the said James
Wavish and John Warner as of the 2nd January 1883. According to this part of
the Invention in place of bars as thero described formed by making slots in a
turned down or reduced central portion we connect the end pieces by a helix or
coiled piece or filament or ribbon of carbon, there being spaces between the
convolutions through which the light from the inner surface shines. According to
a further part of the Invention we form the carbon of a helix or coiled pieco or
filament or ribbon of carbon without end pieces and we connect the respective ends
of the said helix or the like to the terminal wires which enter the bulb of the lamp,
the sockets or clips to receive the said ends being flattened or otherwise formed to
receive the said ends and give good electrical contact
0 SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Wavish, John Warner, and Mark Bailey in the Patent
Office on the 10th May 1884.
JAMES WAVISH of Forest Gate in the County of Essex JOHN WARNER of
Whitechapel in the County of Middlesex and MARK BAILEY of Argyle Square
5 Kings Cross in the said County of Middlesex "IMPROVEMENTS IN CARBONS FOR
INCANDESCENT ELECTRIC LAMPS"

page_text: Wavish and John Warner as of the Second January One thousand eight hundred
and eighty three.
According to this present Invention in place of bars as there described formed by
making slots in a turned down or reduced central portion, of the carbon we connect
the end pieces thereof by a flat belix or coiled piece or ribbon of carbon, there
being spaces between the convolutions thereof through which the light from tho
inner surface shines.
According to a further part of the Invention we form the Carbon of a flat helix
or coiled piece or ribbon of Carbon without end pieces and we connect the
respective ends of the said helix or the like to the terminal wires which enter the
bulb of the lamp, the sockets or clips which receive the said ends being flattened
or otherwise formed to receive the said ends and give good electrical contact.
⚫ And in Order that our said Invention may be fully understood we shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several figures on the annexed sheet of drawings the same letters of reference
indicating corresponding parts in all the figures.
Figure 1 represents a Carbon made according to our Invention. It consists of
end pieces a with an intervening portion at 6 made of a flat helix or coiled piece or
ribbon. Figure 2 represents in side view and Figure 3 in end view a Carbon
formed of a flat helix or coiled piece or ribbon 6 without the end pieces a, the
attachment to the terminal wires being made by forming the ends of the said wires
with flattened sockets or receivers as shewn at c It will be understood that the
number and size of the convolutions of the flat helix, coiled piece, or ribbon may
be varied and that either one or moro of such helices, coiled pieces, or ribbons may
be used in each bulb or exhausted receiver. Some variations of form are shewn in
Figure 4 as examples.
Having now described and particularly ascertained the nature of our said
Invention and the manner in which the same is or may be used or carried into
effect we would observe in conclusion that what we consider to bo novel and
original and therefore claim as the Invention secured to us by the hereinbefore in
part recited Letters Patent is
Carbons for incandescent electric lamps made of or provided with a flat helix
or flat coiled piece or ribbon as herein before described and illustrated by the
accompanying Drawings.
In witness whereof we the said James Wavish John Warner and Mark Bailey
have to this our Specification set our hands and seals this seventh day of May One
thousand eight hundred and eighty four.
TAN TATCH
1