Improvements in Photographs, and in Means for Viewing the same.
Year: 1898

page_text: Improvements in Photographs, and in Means for Viewing the same.
I, ROBERT ROYOU BEARD, Scientific Instrument Maker, of 10, Trafalgar Road,
Old Kent Road, London, S.E., do hereby declare the nature of this invention
to be as follows:-
I make a photographic negative or positive by employing before the sensitivo
photographic plate or film a ruled gridiron or other screen which has (say)
spaces one half the width of the bars or rulings of the screen so that if an
exposure is made I obtain a negative made up of lines with spaces double the
width of the exposed portion. Now if I move. the screen so that the bars or
rulings overlap the exposed portion and expose again, and so on with the third
portion. In this way I obtain three negatives of different objects on one plate,
or as many more or less according to the width of bars or rulings as the screen
affords.
The screen can be a photograph or anything so long as it serves the purpose
to screen the sensitive plate or film.
A positive can be used in conjunction with a screen similar with that which
the negative was taken for various purposes such as for instance a magic lantern
slide. In this case I employ a frame in which is fitted two moveable frames
one for the screen and one for positive (or negative if desired). I move one of
these by a screw which moves along the desired frame to produce the change.
Or in window decoration or advertising the transparency when mounted with
the screen and viewed, at different angles either of the photographs can be seen.
Dated this 24th ...
1
1000
Improvements in Photographs, and in Means for Viewing the same.
I, ROBERT ROYOU BEARD, Scientific Instrument Maker, of 10, Trafalgar Road,
Old Kent Road, London, S.E., do 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; —
I make a photographic negative or positive by employing before the sensitive
photographic plate or film a ruled gridiron or other screen which has (say)
spaces one half the width of the bars or rulings of the screen so that if an
exposure is made I obtain a negative made up of lines with spaces double the
width of the exposed portion, 60 or 80 bars to the inch is a suitable number.
Now if I move the screen so that the bars or rulings overlap the exposed portion
[Price 8d.]

page_text: and expose again, and so on with the third portion. In this way I obtain three
negatives of different objects on one plate, or as many more or less according to
the width of bars or rulings as the screen affords.
The screen can be a photograph or anything so long as it serves the purpose
to screen the sensitive plate or film.
A positive produced from such a negative can be used in conjunction with
a screen similar with that which the negative was taken for various purposes
such as for instance a magic lantern slide. In this case I employ a frame in
which is fitted two moveable frames one for the screen and one for positive or
negative if desired). I move one of these by a screw and thus display the
three pictures in succession.
Or in window decoration or advertising if the transparency when mounted with
the screen be viewed at different angles either of the photographs can be seen.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A positive or negative in which there are two or more pictures of different
objects each picture being broken up into narrow lines or bands, the lines or
bands of the various pictures alternating with each other.
2. The combination with a positive or negative defined by Claim 1 of a fixed
or moveable screen having in it transparent lines or bands corresponding to the
lines or bands of the pictures.