Improvements in Camera Obscuras.
Year: 1891

page_text: Date of Application, 12th Nov., 1891
Complete Specification Left. 20th June. 1892-Accepted, 13th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Camera Obscuras.
I JOHN RICHARD FIELDING of Roach House, 2 Grosvenor Road Douglas
Isle of Man Machinist do hereby declare the nature of this invention to be
as follows:-
Hitherto it has been customary to have only one reflector, lens & table, on to
which table the picture is shown in camera obscuras, but I propose to have a series
of reflectors lenses and tables round the room, (I prefer about 12 of each but more or
less may be used) by this means the view of the country all round the camera obscura
can be shown on the tables at one and the same time. These tables I
propose to
use on an incline to give a sharpness in the picture for long and short focus but
may be horizontal if required and each reflector, lens and table is divided from the
others by screens or partitions if required.
Dated this 11th day of November 1891.
JOHN RICHARD FIELDING.
COMPLETE SPECIFICATION.
Improvements in Camera Obscuras.
I JOHN RICHARD FIELDING of Roach House 2 Grosvenor Road Douglas
Isle of Man Machinist 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:-
Hitherto it has been customary to have only one reflector, lens, and table on to
which table the picture thrown in camera obscuras, but I propose to have a series
of reflectors, lenses and tables round the room (I prefer about 12 of each, but more
or less may be used) by this means the view of the country all round the camera
obscura can be shown on the tables at one and the same time. These tables
I propose to use on an incline to give a sharpness to the picture for long and short
focus but may be horizontal if required. Each reflector, lens, and table is divided
from the others by screens or partitions if required.
And in order that my invention may be fully understood and readily carried
into effect I will proceed to describe the accompanying drawing, reference being
had to the figures and letters marked thereon.
Fig. 1 is a sectional elevation and Fig. 2 is a sectional plan of a camera obscura
with my improvements applied.
Similar letters refer to similar parts in both views.
a is the outer shell or building of the camera obscura, the plan of which, I propose
to make with as many sides as there are tables, tho' it may be circular or any other
c and care the
convenient shape, & is the pay office, outside of but attached to u.
entrance doors through which the people pass into the camera and round the room
in the direction shown by the arrow see Fig. 2 and thus the pictures on the table or
tables can be seen one after the other and they can pass out through the doors d
and d'. e are reflectors and flenses of which there are 12 of each (but a more or
less number may be used), these are fixed at equal or convenient distances from
each other in the roof of the camera, and these reflectors and lenses reflect the
picture of the surrounding country to which they are in focus onto the tables g of
which there are 12 shown round the room (but more or less may be used) by this
means 12 or more or less pictures according to the number of reflectors and lenses,

page_text: can be shown at one and the same time. Each table or picture is surrounded on
the sides and back with a screen or partition h, to confine the light from each lens
to its own picture or table.
I propose to use the tables on an incline as shown to give a sharpness in the
picture, but they may be horizontal if required. In place of having a number of
separate tables gone table may be used, and the different pictures reflected on it,
but I prefer separate tables as shown.
Having now described the nature of my invention and in what manner the same
may be performed I declare that what I claim in respect of camera obscuras is.
1st. Having a series of reflectors and lenses which will reflect pictures on a table
or tables in the camera obscura.
2nd. Dividing the pictures on the table or tables from each other by screens or
partitions h.
Dated this 17th day of June 1892.
JOHN RICHARD FIELDING.