Improvements in Photographic Cameras.
Year: 1892

page_text: Date of Application, 8th Jan., 1892-Accepted, 13th Feb., 1892
COMPLETE SPECIFICATION.
Improvements in Photographic Cameras.
I, WILHELM LANGENBRUCH of 28 Grossbeerenstrasse, Berlin in the Empire of
Germany, Editor, 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 :-
This invention relates to a photographic camera which is easily manipulated,
simple in construction and occupies a very small amount of room; it may be used
moreover as a folding or as a magazine camera.
This invention is illustrated in the accompanying drawings in which
Fig. 1 is a perspective view of a folding camera as opened out ready for use.
Fig. 14 shews (partly broken) the box or slide used for the dry plates.
Fig. 2 is a perspective view of the camera as folded up.
Fig. 3 is a section on line x-x, of the camera shewn in Fig. 1.
Fig. 34 is a section on line y-y, of Fig. 3.
Fig. 4 is a front view of the camera provided with a storage receptacle.
Fig. 5 is a section on line B-B of Fig. 4.
Fig. 6 is a side view illustrating the manner of fitting the apparatus with a
special lens for taking portraits.
Fig. 7 is a front view thereof and Fig. 8 a section on line C-C of Fig. 7.
Fig. 9 shews a special arrangement of the instantaneous shutter the camera.
Fig. 10 is a rear view of the front of the camera.
The apparatus consists of three solid walls a, b, c connected together by joints
and made of any suitable material, and of the walls a', 6', e' made of suitable
fabric and forming when the camera is opened a pyramid with the three
walls a, b, c, (see Figs. 1 and 4). The hinge joints connecting the walls a, b, c, are
50 arranged that the walls a and c may be folded over the wall b. The walls a' b¹¹
are made of opaque material and form in combination with the walls a, b, c the
light tight camera. The rear wall is furnished at its inner surface with
channels and at its upper front surface with a guiding slot c² through which
the dry plates to be exposed are inserted in the apparatus. The guiding slot c
of the wall c is closed, so as to exclude the light, by a rod e' which is guided in a
corresponding groove of the wall c. The wall c fits at its front side c³ within a
receptacle in which the dry plate T is stored. The exit opening of the
receptacle e through which the plates pass can be shifted and is capable of being
closed by a pin e' which can be removed by an opening e formed in the box. The
object glass is arranged in the wall a of the camera (d, Fig. 5) and is represented
in the drawings by a simple biconvex lens. A pin dis passed centrally through
the wall a and serves as an axis for the diaphragm which is furnished with several
large openings d*, d, de (Figs. 1 and 5). Behind the wall a of the camera is
placed a disc d forming an instantaneous closing shutter (see Figs. 5, 9 and 10)
and provided with the opening clearly shewn in the drawings. The same is
likewise capable of turning upon the pin d. In front of the disc d' projects a pinƒ
connected by an india rubber cord with the fixed disc a of the photographic camera
(see Fig. 9). The disc d' has a notch de formed on its periphery and in which a
catch engages when the disc is in a suitable position, this catch being pivoted upon
the pin in the wall a (Figs. 9 and 10). A spring g³ is connected to the catch
and ensures the engagement of the first with the notch in the disc d'. The pins h
and h' upon which the jointed arms, are secured so as to turn freely thereon.
To limit the turning motion, the arms ii are provided with lateral projections !
and which are capable of entering corresponding notches m and m¹ in the arms
and.
g

page_text: The insertion of the dry plate T is effected in the following manner :-The
receptacle e (see Fig. 1A) which contains the dry plate T is tilted, after the pin e
has been withdrawn from the camera, upon the rear wall provided_with_the
guiding slots until the pin e' comes in contact with the receptacle e. The pin el
is now withdrawn from the receptacle e whereupon the dry plate T slides in the
rear wall c. When this is done, the pin e2 is pushed forward so as to close the
dry plate in the dark and protect it from diffused day light. After the plate has
been exposed the pin e' is again moved out of the wall and the camera is turned
in such a position that the plate can slide back in the receptacle e which is closed
by pushing in the pin e'. When the apparatus is opened up from the position
shewn in Fig. 2 into that shewn in Fig. 1, the wall c is raised and the wall a is
placed in a vertical position in order to receive another plate. During this motion
the jointed arms i, and are stretched in a straight line whereby the wall a
is firmly connected with the wall c which in consequence of the relative dimensions
of the jointed arms assume parallel directions. When the camera is not in use, the
g
C
object glass is covered by the shutter which is fixed by the ratchet tooth g,
while the cord g' is stretched at the same time. When an instantaneous exposure
is required, the catch y is lifted out of the slot of the disc d' and the stretched
india rubber cord causes the disc d' to turn while the same passes by with its
opening before the opening in the disc d³ and covers the latter again in the next
moment. In Fig. 5 the camera is shewn as formed with a box or case n instead of
with a rear wall c, this box being arranged to hold six or more sensitive plates.
A bag p made of opaque fabric is fixed to the box n by means of which the dry
plates can be moved in order to be placed in a suitable position for exposure.
In
the box n is arranged a double drawer projecting out of the side wall and
moving within guides o³, o. The guide o for the part o' of the drawer divides the
wall n in such a manner that only a dry plater placed on the right of the guiding
slot can rest on that part of the wall n which is on the left of the remaining stock
of dry plates. The wall of the box placed opposite the drawer o, ol is provided
with a slot q which is shifted in such a manner that only the dry plate ³ resting
against the wall n can slide out of the box and is further furnished with an
opening communicating with the bag p for placing the plate to be exposed in the
proper position. Should a photograph be taken, the drawer o, o is moved out of
the box and the camera is brought in such a position that the object glass of the
camera is placed in a vertical and upward direction. All the dry plates bear now
against the wall n. The drawer 09 o is now moved in the apparatus. The part o
of the drawer moves now the dry plate resting against the wall
through the
opening q into the bag p. By suitably manipulating the latter and the plate
thereby enclosed the latter is inserted in the opening g' and is pushed, as it slides
over the part o¹ of the drawer, into the camera in a proper position for exposure.
The apparatus is now ready for use. Should it be desired, after the exposure is
terminated to expose a new plate, the drawer o, o' is withdrawn again from the
apparatus and the latter is placed in such a position that the object glass may be
in a vertical and upward position. In consequence of this motion the exposed
plate ris laid against the stock of plates bearing against the wall n of the
receptacle. The exposed plate is now placed below the plane of the slot of and
beyond the reach of the part o' of the drawer while the lowermost dry plate laid
upon the wall n touches with its cutting edge the bent over edge o² of the part o
of the drawer. But when the said drawer o, o' is moved again in the box, then the
part o¹ of this drawer passes over the stock of dry plates including the already
exposed plate, while the part o of the drawer strikes by its flange of the dry plate
lying upon the rear wall n and pushes the latter through the opening 9 into the
bag p.
From the latter the dry plate is passed by a suitable manipulation of the
bag p in the opening q' through which the plate is slid above the part of of
the drawer in order to be placed into a suitable position for exposure. To prevent
the plates from being injured on their passage through the slots q, q' the latter are
ין

page_text: covered with soft material such as cloth or the like which is not shewn in the
drawings.
To enable the apparatus to be used for taking portraits as well as landscapes, a
second object glass is fitted to the wall a in which the biconvex lens is placed as
already stated, and is jointed thereto (see Fig. 8). The wall b of the camera is
furnished with a recess corresponding to the size of the frame of the object
glass s (Figs. 6 and 8), in which the enlarging lens s is secured when the apparatus
is only used to take landscapes. But when portraits are required, the object glass
is moved, by turning it upon its joint out of the recess s' and placed in front of
the object glass whereto it is fixed by a bolt t. The manipulation of the
apparatus furnished with a bag for the removal of the plates corresponds exactly to
that shewn in Figs. 1-3.
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 :-
1. A photographic camera in which a solid side wall 6 is connected by hinges
with the side wall a arranged to receive the sensitive plates and with the object
glass plate, while the remaining side walls are formed of cloth impermeable to
light so that the folding of the camera may be effected by laying the side wall and
the object glass plate upon the rear wall substantially as described.
2. A storage receptacle or magazine for a camera of the class set forth
characterized by a double drawer o, o' the insertion of which causes the rear plate
to be guided from a part o of this drawer into an air tight sack or bag p while at
the same time the other part o' of this drawer closes the front plate from the
camera chamber substantially as described.
3. An object glass for a camera of the class set forth consisting of the lens fixed
in the object glass plate a and of the lens slaid in a cavity of the wall b
and capable of being placed in position or withdrawn therefrom, this object glass
serving when the lens s is inserted to take portraits, but when the latter is with-
drawn to take landscapes, substantially as described.
Dated this Seventh day of January 1892.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.