Improvements in and relating to Photographic Cameras.
Year: 1892

page_text: Date of Application, 21st Oct., 1892
Complete Specification Left, 21st June, 1893-Accepted, 22nd July, 1893
· PROVISIONAL SPECIFICATION.
Improvements in and relating to Photographic Cameras.
I, Dr. RUDOLF KRÜGENER, of Bockenheim, near Frankfort-on-the-Main,
Germany, do hereby declare the nature of this invention to be as follows:-
My invention relates to a photographic camera, in which single sensitized sheets
are employed. A number of these single sheets are put together on an improved
principle to form packets and in that state are placed in the camera directly that
is to say without a special case or the like. By reason of the peculiar packing of
the single sensitized sheets extreme simplicity is realized as regards the exchange
of such sheets in the camera and the construction of the latter.
Besides the great cheapness and facility of handling resulting from this feature
the improved camera possesses the further advantage that despite the large number
of exposures which may be given one after the other, it is very light and that by
virtue of the improved mode of packing and exchange the bulk of the camera may
be exceedingly small, which is of great importance for large sizes.
As above stated, the essential feature of my said invention lies in the peculiar
packing and exchange of the sensitized sheets. One mode of packing is charac-
terized by the employment of a long strip of paper or the like. This strip is laid
together in folds which are a little larger than the sensitized sheets to be employed.
To the lower end of the said folds are pasted small strips extending across the
strip. These transverse strips are bent outwards a little and in conjunction with
the respective upper fold of the strip hold the sensitized sheets between two layers
of paper. Packed in this manner a considerable number of sensitized sheets can be
put in a very small space of the camera.
The above described mode of packing and the resulting mode of exchanging the
sensitized sheets may be used in cameras of various constructions. In one arrange-
ment the apparatus comprises the camera proper a magazine and a chamber for the
reception of the sheets which have been exposed. The camera and magazine are
separated from each other by a glass plate, against which the sensitized plates bear
as they are focused. The exchange, or conveyance of the sheets which have been
exposed into the said chamber, takes place by conducting the prolonged end of the
strip over a roller and from this roller to the outside through a slot which precludes
the passage of light. When pulling this end of the strip the transverse strip which
is foremost at the time will raise the sheet which has been exposed. By the above
mentioned roller and small bluck preferably covered with velvet or similar soft
material for protecting the coated side of the sheet the latter is bent, shifted
forwards and finally falls of itself in the chamber. Now the strip is pulled a
certain distance further from the camera, the superfluous end being then torn off.
By this means the sheet which has been exposed is laid away and at the same time
a new sheet is put ready for a fresh exposure, as by pulling out the strip the
following sheet is liberated and placed against the glass plate which takes place by
a small spring plate pressing the whole packing forwards. After the exposure the
fresh sheet is conveyed in the same manner as the preceding sheet into the said
chamber, and another new sheet which has not yet been exposed passes into the
focus.
In a second arrangement the chamber is provided vertically above the magazine
and separated therefrom by a tongue. In this instance the sheets which have been
exposed move straight upwards, are taken from the strip by the said tongue as the
strip is pulled further and pass in this manner into the chamber.
According to a somewhat different mode of packing the sensitized sheets a
number of single strips are used instead of a continuous strip. All the upper ends

page_text: of these strips are beut round and lie one upon the other, whilst the lower ends are
furnished with transverse strips like those used in the first mode of packing.
These transverse strips support the sensitive sheets, which are prevented from
falling by the upper bent ends of the main strips. Then the entire packet is so
placed in one of the apparatus that the upper free ends of the main strips protrude
through a slot formed in the wall of the camera. On pulling the foremost upper
sheet after the exposure from the camera, taking hold of the end protruding from
the latter, the sheet which has been exposed is conducted into the said, chamber by
a plate or other suitable device, the following sensitized sheet being at the same
time put ready for exposure. In order to preclude the passage of the light through
the slot after a number of strips have been pulled out the said slot may be kept
closed by any suitable device, for instance by a plate held in guides and adapted to
slide down in proportion as the strips are pulled out, or the said slot is specially
covered over by a flap on the outside.
Instead of pasting on to the strips small transverse strips for holding and raising
the sensitized sheets a very narrow width of the latter may be fixed with paste to
such strips.
When pulling the strip the sheets are finally torn off and drop into
the magazine.
Of course my improved method of packing and exchanging sensitized sheets may
also be employed with cameras of any construction without departing from the scope
of the invention.
Dated this 21st day of Databa» 1800
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Photographic Cameras.
I, Dr. RUDOLF KRÜGENER,. of Bockenheim, near Frankfort-on-the-Main, in
the Empire of Germany, 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 a photographic camera, in which single sensitized sheets
are employed. A number of these single sheets are put together on an improved
principle to form packets and in that state are placed in the camera directly, that
is to say, without a special case or the like.
By reason of the peculiar packing of the single sensitized sheets extreme
simplicity is realized as regards the exchange of such sheets in the camera and the
construction of the latter.
Besides the cheapness and facility of handling resulting from this feature. the
improved camera possesses the further advantage that despite the large number of
exposures which may be given one after the other, it is very light and that by
virtue of the improved mode of packing and exchange the bulk of the camera may
be exceedingly small, which is of great importance for large sizes.
In the accompanying drawing, I have shown various forms in which my said
invention may be conveniently and advantageously carried into practice.
Figures 1 to 3 show diagramatic longitudinal sections of three different arrange-
ments of the improved camera and
Figures 4 and 5 show two different modes of packing the several sensitized
sheets.
As above stated, the essential feature of my said invention lies in the peculiar
packing and exchange of the sensitized sheets. Two methods of packing are
shown in Figures 4 and 5. The first method shown in Figure 4 is characterized
by the employment of a long strip a of paper or the like. This strip a is laid
together in folds which are a little larger than the sensitized sheets to be employed.

page_text: To the lower end of the said folds are pasted small strips extending across the
strip b as shown in Figure 4. These transverse strips are bent outwards a little
and in conjunction with the respective upper fold of the strip a hold the sensitized
sheets c between two layers of paper. Packed in this manner a considerable
number of sensitized sheets can be put in a very small space of the camera.
The above described method of packing and the resulting method of exchanging *
the sensitized sheets may be used in cameras of various constructions. Two of the
simplest methods of construction are represented in Figures 1 and 2.
In the arrangement shown in Figure 1 the apparatus comprises the camera
proper A, a magazine B and a chamber C for the reception of the sheets which
have been exposed. The camera A and magazine B are separated from each other
by a glass plate, D, against which the sensitized plates bear as they are focused.
The exchange, or conveyance of the sheets c which have been exposed in the said
chamber C, takes place by conducting the prolonged end d of the strip a over a
roller. E and from this roller to the outside through a slot F which precludes the
passage of light. When pulling this end d of the strip a the transverse strip b
which is foremost at the time will raise the sheet c which has been exposed.
By the above mentioned roller E and a small block G preferably covered with
velvet or similar soft material for protecting the coated side of the sheet a the
latter is bent, shifted forwards and finally falls of itself into the chamber C. The
strip a is now pulled a certain distance further from the camera, the superfluous
end being then torn off.
By this means the sheet which has been exposed laid away and at the same
time a new sheet is put ready for a fresh exposure, as by pulling out the strip a the
following sheet is liberated and placed against the glass plate D, which takes
place by a small spring plate pressing the whole packing forwards. After the
exposure the fresh sheet c is conveyed in the same manner as the preceding sheet
into the said chamber C and another new sheet which has not yet been exposed passes
into the focus.
In the modification represented in Figure 2 the chamber C is arranged vertically
above the magazine B and separated therefrom by a tongue or plate H. In this
instance the sheets c which have been exposed move straight upwards, are separated
from the strip a by the said tongue or plate H as the strip is pulled further and
pass in this manner into the chamber C.
In Figure 5 is represented a somewhat different mode of packing the sensitized
sheets a.
In this case a number of single strips or sheets are used instead of a
continuous strip. All the upper ends of these strips or sheets are bent round and
lie one upon the other, whilst the lower ends are furnished with transverse
strips like those used in the first method of packing. These transverse strips
support the sensitive sheets, which are prevented from falling by the upper bent
ends of the main strips a. The entire packet represented in Figure 5 is so placed
in the modified form of apparatus shown in Figure 3 that the upper free ends of the
main strips a protrude through a slot F formed in the wall of the camera.
pulling the upper sheet after the exposure, from the camera, taking hold of the end
protruding from the latter, the sheet c which has been exposed guided into the
said chamber C by a plate K or other suitable device, the following sensitized
sheet c being at the same time arranged ready for exposure.
On
number
In order to preclude the passage of the light through the slot F after
of strips have been pulled out the said slot may be kept closed by any suitable
device, for instance by a plate N held in guides L and adapted to slide down in
proportion as the strips are pulled out, or the said slot may he specially covered
over by a flap on the outside.
Instead of pasting small transverse strips b on to the strip a for holding and
raising the sensitized sheets c a very narrow width of the latter may be fixed with
paste to such strips a. When pulling the strip a the sheets are finally torn off and
drop into the magazine.
Of course my improved method of packing and exchanging sensitized sheets

page_text: may also be employed with cameras of any construction without departing from
the scope of the invention.
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
1. A method of changing the plates in photographic cameras, characterized by
placing the plates e to be exposed upon, suspending them from or pasting them to
strips a, whereby the plates after their exposure, by pulling the strips a
combined to form one band or laid one upon the other, are moved from the
position required for the exposure to a space or chamber C designed for the
reception of the plates which have been exposed, while a fresh plate e passes at
the same time into the focus.
b
2. In the method characterized in the first claim the paper strips a upon which
the plates are placed or from which they are suspended or to which they are
pasted, either of a continuous strip a (Figure 4) laid together like a fan, or of
single strips a (Figure 5) piled in great numbers one upon the other.
Dated this 21st day of June 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, Loudon, W.C., Agents for the Applicant.