Improvements in Apparatus for the Use of the Electric Light for Photographic Purposes.
Year: 1895

page_text: Date of 'Application, 2nd Feb., 1895-Accepted, 23rd Mar., 1395
COMPLETE SPECIFICATION.
Improvements in Apparatus for the Use of the Electric Light for
Photographic Purposes.
I, ANDREW GEORGE ADAMSON, of 136 Buchanan Street, Glasgow, North
Britain, Photographic Artist, 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 :-
My invention relates to improvements in apparatus for the use of the electric
light for photographic purposes, and is a further development of my previous
Patents Nos. 21379, A.D. 1893, and 5971, A.D. 1894.
In order that my invention may be properly understood and readily carried into
effect I have hereunto appended an explanatory sheet of drawings, in the several
figures of which corresponding parts are marked with the same letters of
reference.
Figure 1 is a side elevation of the carriage.
Figure 2 is a section of the same showing its swivel and electrical connections.
Figure 3 is a transverse section of a swivelling device for connecting the beam
with the reflector and imparting to it a motion independent of that of the beam.
Figure 4 is a plan of the same.
The swivelling action as illustrated in Figure 4 consists of a tube a pivoted to
the beam A, the one end of which constitutes a bush a'. The lower end of the
said tube a is provided with a large flange b, which supports a core c, preferably of
wood. Fitted centrally into this core c are two pairs of metallic rings d d' and e e¹
of different diameters. The rings d and e are not only of the same diameter as,
but are in frictional contact with, the rings and e¹. The said lower rings di
and e, being secured to the lower fixed portion of the core c, enter into no
swivelling motion, but the upper core c¹ and the rings d and e are capable of
rotating round the tube a. To connect the swivelling device with the reflector
(not shown on the accompanying drawings but on those of my previous Patents)
the bands and are employed. These bands are secured into the movable
portion of the core c', as seen in Figure 4. The feed conductors g and are
carried along the beam A, and enter the carriage i by the holes j. They then pass
down the tube k and are led to the rings d³ and e²e³, which in construction and
arrangement are analogous to those previously referred to in reference to Figures 3
and 4. They afterwards pass from the carriage i by the terminals m and l. The
terminals m and 1 of the carriage are fitted horizontally in the edge of the core c¹,
but not so in Figure 3 where they are shown as being fitted vertically in the said
rings d d' and e e¹. The said feed conductors being led to the end of the beam A
pass into the tube a at n, and pass out at the lower end a¹ to the terminals
and m', where they enter the rings and e' respectively. By the upper terminals
through the rings d and e they are conducted to the reflector.
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 :-
The general arrangement, combination, and operation of the parts of the

page_text: apparatus for the use of the clectric light for photographic purposes substantially
as hereinbefore described and illustrated on the accompanying sheet of drawings.
Dated this 1st day of February 1895.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.