Improvements in and relating to Lamps for Enlarging or Copying Photographs and the like.
Year: 1890

page_text: Date of Application, 11th June, 1890-Accepted, 12th July, 1890
COMPLETE SPECIFICATION.
Improvements in and relating to Lamps for Enlarging or Copying
Photographs and the like.
I, JAMES CHAPMAN SHENSTONE, of 13 High Street, Colchester, in the County of
Essex, Chemist, 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 lamps used for enlarging or copying photographs and the
like, with the aid of an ordinary photographic camera without the use of a lantern or
condenser, the object being to render these lamps more handy in use and efficient in
operation.
With these ends in view my invention consists of a lamp having an oil lamp and a
spirit lamp with magnesium ribbon burner, capable of being moved transversely
across the lamp to bring the one or the other into a central position as required for
focussing or printing. In the accompanying drawing Figures 1. and 2. are views in
front elevation (with the glass and negative-carrier removed) the former showing the
oil lamp in position for focussing, and the latter showing the magnesium ribbon
burner in position for printing. Figure 3. is a view in cross section of the lamp and
Figure 4 is a view in side elevation thereof.
Throughout the several views similar parts are marked with like letters of
reference.
The body A of the lamp is formed of charcoal iron, or other suitable metal, and
it is provided at its front with suitable slides adapted to receive a sheet of opaque
or ground. glass B and a negative-carrier C. A hinged lid a is adapted to close
down over these slides and make them light-proof. In the back part of the lamp
is fitted a carrier D adapted to move transversely across the lamp in, or on, suitable
slides a a. To this carrier are fixed an oil lamp E and a spirit lamp F. The
wick-rising spindle e of the oil lamp is of such a length that it projects through
a suitable opening a² in the side of the body A of the lamp and provides a means
of moving the lamps. The opening a² is fitted with a suitable slide a³ providing
for the removal of the carrier and its lamp from the body A of the lamp when
desired. On the back of the body A of the lamp is a magnesium ribbon holder G.
of any approved construction mounted on a plate a adapted to slide transversely
across the back of the body of the lamp. The ribbon tube passes through a
slot a in the back of the body of the lamp and engages with the back of the
carrier D thus forming a connection between the two. It will thus be seen that
the oil lamp E and the spirit lamp F with magnesium ribbon holder G all move
together. An elongated chimney A is provided to allow of the movement of the
glass chimney of the lamp E and it is provided with suitable light deflectors a a.
Suitable peep holes a a fitted with ruby glass are provided in the sides of the
body A of the lamp.
It will be seen that this lamp is particularly handy in use as all that is necessary
after the focussing has been effected by means of the oil lamp, is to pull the carrier D
over by means of the wick-rising spindle e. thereby placing the spirit lamp and
magnesium ribbon holder in the central position previously occupied by the oil lamp,
ready for operation to effect the printing.
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;
1st. The improved lamp for enlarging or copying photographs and the like, sub-

page_text: 2nd. In a lamp for enlarging or copying photographs and the like with an ordinary
photographic camera without the use of a lantern or condenser, adapting the focussing
oil lamp and the printing magnesium ribbon burner to move transversely across the
lamp for the purpose of bringing the one or the other into a central position, as and
for the purpose set forth.
.
T:
11111 of Tun 1800
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70-72, Chancery Lane, London, W.C., Agent for the Applicant.