Improved Means for Advertising.
Year: 1890

page_text: cate of Application, 18th Mar., 1890
Complete Specification Left, 17th Nov., 1890-Accepted, 24th Jan., 1891
PROVISIONAL SPECIFICATION.
Improved Means for Advertising.
SYDNEY JAMES PORTER, 181 Strand, London Mathematical Instrument Maker
does hereby declare the nature of this invention to be as follows:-
The apparatus is constructed in such a manner that illuminated square diagrams
are projected onto a white sheet of either opal glass, porcelain, or enamelled iron;
the working part of the apparatus being enclosed in a small box which is suspended
at a short distance in front and towards the upper part of the square frame containing
the white sheet of either material by an arm of wood or iron. This apparatus consists of
a piece of clockwork, a revolving disc or diaphragm with 10 or more apertures, each
aperture holding a transparent diagram, either print photograph or painting, a set of
condensing & object lenses, & a lamp & reflector, either gas, oil or electric; the square
white shect of opal glass, porcelain, or enamelled iron, has a stout wooden framework
to protect it and behind this framework is fixed an electric accumulator which supplies
the lamp in the apparatus suspended in front of square frame.
The working of the apparatus is as follows: The clockwork A is wound up, thus
setting the revolving disc or diaphragm B in motion (the centre or axis of this disc
forming part of the clockwork). This is so arranged that the disc is moved round a
given distance at certain intervals and is placed in such a position that the lowest
aperture at C passes between the condensing & object lenses D & E this optical part
being placed at the lower part of the box containing the above apparatus the con-
nection F is made between the electric lamp H and the accumulator G or if gas or
oil the lamp is lighted, the light thus obtained is condensed onto the transparent
print, photograph or painting at C (this being the lowest aperture of the revolving
dise B) & passed through the object glass E and projected onto the square white
sheet of opal glass, porcelain or enamelled iron; thus these refracted rays of light
will be distinctly shewn in sharp black, white, or coloured shades.
The above remarks & letters refer to a sectional drawing of the complete apparatus.
Dated 1:10:1 of Mach 1900
SYDNEY JAMES PORTER.
COMPLETE SPECIFICATION.
Improved Means for Advertising.
SYDNEY JAMES PORTER 181 Strand London Mathematical Instrument Maker
does 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 :-
The apparatus is constructed in such a manner that illuminated square diagrams
are projected onto a white sheet of either opal glass, porcelain, or enamelled iron:
the working part of the apparatus being enclosed in a small box which is suspended
at a short distance in front and towards the upper part of the square frame containing
the white sheet of either material by an arm of wood or iron. This apparatus consists
of a piece of clockwork a revolving disc or diaphragm with 10 or more apertures
each aperture holding a transparent diagram either print, photograph, or painting, a
set of condensing and object lenses, and a lamp and reflector either gas, oil or electric.
The square white sheet of opal glass, porcelain or enamelled iron has a stout wooden
framework to protect it and behind this framework is fixed an electric accumulator
which supplies the lamp in the apparatus suspended in front of the square frame.
The working of the apparatus is as follows: The clockwork A is wound up thus
setting the revolving disc or diaphragm B in motion (the centre or axis of the disc
Price Sil

page_text: forming part of the clockwork). This is so arranged that the disc is moved round a
given distance at certain intervals and is placed in such a position that the lowost
aperture at C passes between the condensing and object lenses D and E this optical
part being placed at the lower part of the box containing the above apparatus; the
connection F is made between the electric lamp H and the accumulator G or if gas
or oil, the lamp is lighted. The light thus obtained is condensed onto the transparent
print, photograph or painting at C (this being the lowest aperture of the revolving
disc B) and passed through the object glass E and projected onto the square white
sheet of opal glass, porcelain, or enamelled iron; thus these refracted rays of light
will be distinctly shewn in sharp black, white or coloured shades.
The above remarks and letters, refer to the sectional drawing of the complete
apparatus, that accompanied the Provisional Specification."
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
An improved means for advertising as above described.
SYDNEY JAMES PORTER.