Improved Apparatus for the Production of Photographs upon Ferrotype and similar Plates.
Year: 1894

page_text: Date of Application, 15th Sept., 1894-Accepted, 27th Oct.. 1894
COMPLETE SPECIFICATION.
Improved Apparatus for the Production of Photographs upon
Ferrotype and similar Plates.
I HERBERT JOHN HADDAN of the Firm of Herbert Haddan and Co. of
18 Buckingham Street, Strand, W.C. London, Patent Agent, do hereby declare
the nature of this invention, a communication to me from abroad by Ramon
Aramburn, of 5 Plaza de la Constitucion, Barcelona in the Kingdom of Spain,
Manufacturer and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
The apparatus which forms the object of this invention essentially consists of a
dark chamber or camera for the exposure of photographic plates for the reception
of the image thrown thereon, and at the same time containing the necessary
laboratory apparatus for effecting the development and fixing of such pictures, all
which operations are directed from outside by simple means.
Consequently this apparatus can be used for producing upon ferro-type or similar
plates photographs of exterior objects and deliver the finished photograph after a
very short delay.
The apparatus forming the object of this invention is shown in the annexed
drawings in which
Fig. 1 is a perspective view of the camera opened to show interior parts. Fig. 2
is an end view thereof.
Fig. 3 illustrates the means for inserting the sensitive plate.
Fig. 4 is a cross section and Fig. 5 an elevation of the frame in which the
sensitive plate is held during exposure.
It consists of a box A, A, A, A provided with two doors, the one B B arranged
laterally and the other C at the back. At one end the box A carries an orifice
over which the lens D is fixed which is provided with a covering plate or shutter
of any convenient system.
The plate carrier E E is an auxiliary part of the box and is represented in section
in Fig. 3. This plate carrier consists of a receiver F F F F mounted so as to slide
on a small platform G provided with a slit H. by a sliding motion imparted to the
receiver F; the space within the plate carrier can be made to exactly coincide with
the orifice or slit H. When the groove H and the orifice F¹ of the receiver F are
not in relation with each other, the latter will be entirely closed and on the contrary
when coincident or in relation, the receiver will be open in order that the plate I
may be placed in the receiver F or may be allowed to fall out of the same
respectively.
The plate carrier E consisting of parts F, G, is fixed so as to slide on or in the
guides J placed on the upper part of the box A. In this box there is also arranged
a slit H which exactly coincides with H when the plate carrier is mounted on the
box A.
Below the slit H' is the framing K (Figs. 1 and 2) which is represented in section
in Fig. 4 and in front view in Fig. 5. This frame is placed at the focus of the

page_text: lens D so as to expose the plate at the moment when it is to receive the luminous
image. The lower part of this frame K is open, being provided with a hinged
floor plate L which can be actuated from outside by means of the shaft Min
connection with the crank M. When the plate is allowed to fall into the frame K
duly closed by the floor L and remain therein until the floor is opened from outside,
the plate will then fall out of the frame by its own weight.
Inside the box A two troughs or baths N N' are arranged, one of which contains
the developing bath and the other the fixing bath. O is a suitably fixed rotary axle
provided with an angular arm 0, 0, 0" the extremity of which carries a metallic
basket of iron wire. From outside a rotary movement can be imparted to shaft o
by means of the crank P (Fig. 2).
To commence the operation the basket O" is raised out of the trough N so that
when the plate falls from the frame K K, the floor L being opened, said plate falls
in the interior of the basket O".
In this way the plate is subjected in the trough N to the action of the developing
bath and when the time elapsed is considered sufficient, the outside crank P is
turned, so that at the same time the plate holding basket O" is turned and as soon
as this basket arrives to a certain position, that is, at a certain angle of inclination,
the plate will drop out of the basket by its own weight and fall into the fixing bath
in the trough N¹. The prescribed time being elapsed, the operator opens the
door C and takes out the plate with the duly fixed picture on it; after it is
washed the photograph is finished.
The door B which closes hermetically, is arranged for regulating and preparing
the apparatus in the interior.
To obtain a photograph after the doors of the apparatus are shut and the baths
prepared, a plate carrier (of which several may be kept in readiness) is taken
containing a sensitive plate; the latter is then placed on the guide J by sliding
along the receiver F the plate falls into the framing K thus taking its place
opposite the lens.
Exposure of the plate is then effected by opening the shutter, and after having
closed the latter again the crank M' is actuated and the impressed plate falls into
the basket O which latter rests in the trough N. Having laid therein a sufficient
time, the crank P is actuated nd thus, by the medium of the movement of the
basket O, the plate is transported from the trough N to the trough N¹ and from
this latter it is extracted after a sufficient time has elapsed, on opening the door C.
In this apparatus I can also arrange for the movement of the basket in any other
desired manner, also provide any other suitable baths for washing the photographs
before extracting the same from the interior, but according to the object described
it is more practical that the washing be effected outside.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed, I declare that what 1
claim is.
In photographic apparatus-
1. The camera body having accessories for the holding and exposure of sensitive
plates and a laboratory in which the operations of developing and fixing or other-
wise treating such plates is effected and mechanical appliances worked from outside
by the operator for causing the plate to be transferred to the first bath and thence
to the other or others.
2. A metallic wire basket in combination with means for operating it by hand
from outside the photographic apparatus, serving to transport the plates from one
bath to the other.
3. A plate carrier consisting of a closed receiver which opens when sliding along
a platform provided with a slit adapted to coincide with the entrance opening of
said receiver.
4. A frame for holding the sensitive plate during exposure, said frame closed

page_text: below by a movable floor operated from outside the camera, said frame being placed
inside the camera body over a bath therein substantially as and for the purpose set
forth.
Dated this 15th day of September 1894.
H. J. HADDAN,
Of the Firm of Herbert Haddan & Co.,
18, Buckingham Street, Strand, London, W.C.