Year: 1886

page_text: Date of Application, 7th Dec, 1886
Complete Left, 16th Aug., 1887.
Complete Accepted 20th Sept., 1887
RESERV
A communication to me from abroad by HANS BRAND, of Baireuth, in the Empire
of Germany, Photographer to the Court of Bavaria.
I, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of Middle-
sex, do hereby declare the nature of this invention to be as follows:-
This invention relates to apparatus for the rapid printing of photographic pictures
upon paper or other surfaces rendered sensitive to light by bromide of silver and
gelatine or other means.
The improved apparatus is not intended for the reproduction of pictures by any of
the known mechanical printing processes, but for the rapid and perfect production
of positive prints of any dimensions upon highly sensitive material, where it is of
importance that the exposure should be accurately timed, and all extraneous rays of
light excluded.
The improved apparatus consists of a frame taking the place of one of the panes of
an ordinary window, the remainder of which is darkened with some non-actinic
material. Into this frame are fitted two hinged shutters, one opening outward, and
the other inward into the dark chamber. The latter turns upon hinges at the bottom
and is held by a catch or bar at the top when closed. It has a central opening also
closed by a shutter hinged below which carries the sensitive material upon which the
picture is to be printed, and is covered with a non-actinic cloth. The shutter opening
outward as well as that last described are held when closed by a double catch at the
top of the outer franie turning upon a pivot and held in its normal position by springs.
At the lower side of the outer frame which opens inward as described is fixed a
bracket carrying a spring upon which the inner shutter carrying the sensitive surface
falls when open.

page_text: The inner side of this last shutter carries a flat plate or support resting upon
springs between them and covered with a sufficient number of thicknesses of soft
elastic material such as velvet or plush, upon which the sensitized paper is laid
and held in its position by a thread carried by side wires or fastenings.
In the principal frame fitted into the window as first described is fitted a plate
glass across which are arranged two adjustable bars sliding at their ends in vertical
grooves in which they can be fixed in any position by screws. These bars hold the
photographic negative.
To use the apparatus, the operator closes the shutter which opens outward by means
of a wire or bar and handle passing through a light tight opening, until the top of
the shutter frame is held closed by the outer end of the top catch; the negative is
then fixed in its place against the plate glass by the two adjustable bars, and the
sensitized paper is adjusted in its position upon the elastic bed prepared for it. The
latter is then raised until closed when it is held by the inner end of the top catch, the
outer end of which at the same time releases the outer shutter which falls outward.
When the exposure has been sufficiently long, the outer shutter is closed by the
handle and in becoming locked by the top catch it releases the inner shutter and
sensitized paper, which fall inward, when the print can be removed and a fresh sheet
of sensitized material adjusted in position, and so on as often as desired.
'
Dated this 7th day of December 1886.

page_text: Improvements in Apparatus for Printing Photographic Pictures.
A communication to me from abroad by HANS BRAND, of Baireuth, in the Empire
of Germany, Photographer to the Court of Bavaria.
1, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of
Middlesex 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 and accompanying drawings, (that is to say) :-
This invention relates to apparatus for the rapid printing of photographic pictures
of large or small dimensions upon paper or other surfaces rendered sensitive to light
by bromide of silver and gelatine or other means.
The improved apparatus is not intended for the reproduction of pictures by any of
the known mechanical printing processes, but for the rapid and perfect production
of positive prints of any dimensions upon highly sensitive material, where it is of
importance that the exposure should be accurately timed, and all extraneous rays of
light excluded.
In the accompanying drawings which are in illustration of the invention, figure 1
represents an ordinary window fitted with the improved apparatus, the panes being
rendered impervious to actinic light in any suitable manner.
Figure 2 represents a transverse section of the window and apparatus through the
line A. B. figure 1. Figures 3 and 4, show upon a larger scale the apparatus shewn
in figures 1 and 2, and figure 5 is a plan of figure 4.
The improved apparatus consists of a frame a taking the place of one of the panes
of an ordinary window, the remainder of which is darkened with some non-actinic
material as already explained.
Into this frame a are fitted two hinged shutters b and c, one (c) opening outward, and
the other (b) inward into the dark chamber.
The latter b turns upon hinges at the bottom 61 and is held by a catch or bar d
at the top when closed. It has a central opening also closed by a shutter ƒ hinged
below at e, e, which carries the sensitive material upon which the picture is to be
printed, and is covered with a non-actinic cloth. The shutter c opening outward and
covered with non-actinic material c¹ as well as the one f, are held when closed by a
double catch g', g, at the top of the outer frame turning upon a pivot g and held in
its normal position by springs g³, g. At the lower side of the outer frame b which
opens inward as described is fixed a strong bracket h carrying a spring h¹ upon
which the inner shutter carrying the sensitive surface falls when open.

page_text: The inner side of the last shutter f carries a flat plate or support k resting upon
springs i, i, between them and covered with a sufficient number of thicknesses of soft
elastic material such as velvet or plush. It is fastened in its position by these springs,
and on the other side by two bolts l.
Upon it the sensitized paper is laid and held in its position by a thread + carried by
side wires or fastenings 9, 9.
In the principal frame a fitted into the window as first described is fitted a plate
glass m across which are arranged two adjustable bars p, p, sliding at their ends in
vertical grooves n, n, in which they can be fixed in any position by screws and nuts o, o.
These bars p, p, hold the photographic negative.
To use the apparatus it is arranged in the manner shewn in figures 2 and 4. The
operator first closes the shutter. c which opens outward by means of a wire or bar s
and handle passing through a light-tight opening, until the top of the shutter frame
is held closed by the outer end of the top catch 93, the negative is then fixed in its
place against the plate glass m by the two adjustable bars p, p, and the sensitized
paper is adjusted in its position upon the elastic bed & prepared for it by the thread r.
The frame carrying the support k is then raised until closed when it is held by the
inner end of the top catch, the outer end g² of which at the same time releases
the outer shutter c which falls outward.
When the exposure has been sufficiently long, the outer shutter c is closed by the
handles and in becoming locked by the top catch it releases the other catch g¹ and
the inner shutter b and sensitized paper, which falls inward into the dark room when
the print can be removed and a fresh sheet of sensitized material adjusted in position;
and so on as often as desired.
The wire u through the top of the opening in the frame a ensures the moving of
the frame and the shutter f simultaneously with the disengagement of the
catches g¹, g³.
I do not confine myself to the precise details, relative proportions, or dimensions,
of the various parts of the improved photographic apparatus, but having now particu-
larly 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. In apparatus for printing photographic pictures the combination of a main
frame a (figure 4) to which two frames 6 and c are fixed by hinges, the frame b
moving outward and being fitted with a frame f carrying the elastic plate or support k
and turning in hinges, and the frame c, being actuated by a draw-bars and covered
with a material impervious to actinic light and moving inward substantially as
described and shewn.
2. In such apparatus for printing photographic pictures, the use of the right and
left handed catches g¹, g², (see figures 4 and 5) for fastening and releasing the
frames and c substantially as described and shewn.
3. The cross-bars p, p, (figures 3 and 4) sliding in the grooved guides n, n,
for fastening the negatives upon the glass plate m, substantially as described and
shewn.