IMPROVE- MENTS IN THE FORM & PRODUCTION OF MAPS FOR TEACHING GEOGRAPHY
Year: 1885

page_text: We, Revd EDMUND MCCLURE, Clerk in Holy Orders, 1 Onslow Place, South
Kensington, London, & HENRY FORSEY BRION, Geographer 26 Wivenhoe Road
Peckham Road, S.E. do hereby declare the nature of our invention for IMPROVE-
MENTS IN THE FORM & PRODUCTION OF MAPS FOR TEACHING GEOGRAPHY to be
as follows:-
A plaster model in relief of a Country or region is first prepared, the vertical
scale being equal to, or a certain multiple of, the horizontal scale. The Model is
treated with a preparation so as to give good results when a photograph is taken.
A photographic negative of the model is taken with a strong light falling at a
certain angle, while a subdued light is allowed to reach the portions meant to be in
shade. [or a photo-negative taken from nature by a balloon or otherwise may be
used for small regious] The negative thus obtained is then used to produce by a
process of photo-gravure prints in permanent ink of various tints. Names of
places &c are printed on this print, and transparent colours are also applied by
lithography or block printing to mark out county &c divisions the transparency
of the original print allowing this to be done without destroying the relief
appearance of the Map.
71

page_text: We EDMUND MCCLURE, Clerk in Holy Orders, 1, Onslow Place, South Kensington,
London, and HENRY FORSEY BRION, Geographer, 26, Wivenhoe Road, Peckham
Rye S.E. do hereby declare the nature of this invention for IMPROVEMENTS IN the
FORM & PRODUCTION OF MAPS and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:-
A plaster of paris, or embossed paper model in relief of a country or region is
first prepared, the vertical scale being either equal to or two or more fold the
horizontal scale.
The plaster of paris, or embossed paper model is painted over with Chinese or
other white so as to give a uniform white surface, and the coast line is marked out
in pencil.
The model thus treated is placed at such an angle with regard to the light as
will best throw out the projections of the land, while a subdued light is allowed to
reach the portions meant to be in shade, so as to prevent strong contrasts of black
and white.
A negative is taken of the model thus placed. Or in case of photography of a
region from a balloon the negative itself serves the purpose.
This negative is then prepared for photo gravure or collo-type as follows: The
lakes (and rivers when required) are stopped out by painting in yellow or
other colour which excludes actinic light.
sea,
The photo gravure is taken in several tones of colour.
The photo gravure map thus obtained, a specimen of which is annexed for the
better illustration of our invention, is called the outline map, and shows the main
physical features of a country. (It is proposed that students in schools should
learn Geography by filling in the river systems, the chief towns, county or other
divisions upon this map.).
Upon the outline map the river systems, names of towns &c and county or other
divisions are printed in a colour adapted to the tone of the map, lithography or
other method of printing being employed.
Upon this map the county or other divisions are printed in a transparent colour
so as to preserve the sense of relief.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, we declare that what
we claim is:-
Producing maps by photo-gravure process from a negative photograph of a relief
model, and printing and colouring the same to shew topographical and geographical
details, substantially as and in the manner described.
Dated this second day of June 1886
EDMUND MOCLURE.
HENRY FORSEY BRION.