Improvements in Photo-printing Machinery.
Year: 1896

page_text: Date of Application, 16th July, 1896-4ccepted, 5th Sept., 1896
COMPLETE SPECIFICATION.
Improvements in Photo-printing Machinery.
We, LEOPOLD MAXIMILIAN SCHMIERS and JOHANN DAVID HERMANN
STEIN both of the Firm of Schmiers Werner & Stein, of Doesener Weg
No. 12 & 14, Leipzig in the Empire of Germany Manufacturers 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:-
The invention relates to machinery by means of which it is possible to make,
after the manner of operating printing machines, quickly and consecutively copies
of pictures produced by photographical means.
The invention consists in the special construction of the machinery, especially
the arrangements for laying on in order to press the sheet in a suitable manner
against the photographic negative, further the arrangement, whereby the exposure
is effected mechanically, in order to produce speedily single copies.
The different arrangements and the co-operation and working thereof together
with the construction as well as the working of the main-parts will be gathered
from the annexed drawings, in which
Fig. 1 is a front-view of the improved photo-printing machine.
Fig. 2 is a side-view.
Fig. 3 a section through the working parts on the line R R (Fig. 1).
Figs. 4 & 5 show the working.
Figs. 6 & 7 are representations of an exposure-apparatus for day-light.
Figs. 8 to 10 are representations of a fixed exposure apparatus.
Fig. 11 is a section of a rotatory exposure-apparatus.
Figs. 12 & 13 represent enlarged cross-sections and, working.
Fig. 14 a section of another rotatory exposure-apparatus for day-light.
Figs. 15 to 17 show enlarged sections and working.
F
The machine which is placed and worked in a room lighted only by red light, is
provided with a negative plate, against which by means of a laying apparatus is
pressed a sheet of sensitized paper and then by the effect of certain mechanisms
the exposure of the negative together with the sensitized sheet lying behind it is
effected.
All these proceedings being effected quickly and consecutively, similar to the
printing of a sheet in a printing press.
The laying plate n arranged to swing is coated with a felt layer, in order that
the sheet is pressed softly and tightly upon the glass-negative plate p, which is
kept fixed in a convenient manner.
The swinging movement of the laying and pressing plate n is effected from the
shaft b by means of an eccentric e and by the effect of the weighted lever h which
by means of corresponding joints is in co-operation with the supports m.
The movement of the plate n is unequal in its periods, in order that the laying
on and the taking off of the sheet can be effected in the right manner.
For the right laying of the sheets the sheet-guides o o serve and can be put in
according to the size of the sheets.
"The plate n receives in its position, Fig. 4, the sheet and conducts it against the
glass-plate p of the negative (Fig. 5), in order to keep it there a short time, during
which the exposure is effected and then return it to its previous position.

page_text: The disk R is provided, when using this apparatus, with a pin which by the
turning of R catches the bolt placed on the underside of the disk R' of U and.
thus transfers U from the position shown in Fig. 15, into the position shown in
Figs. 16 & 17.
wo, which is fixed spring-like, is pressed backwards by the nose y of the box C,
and U is pulled back into its previous position by the spring a which fixed on C
is connected with the upper disk of U, which effects two exposures following.
shortly each other, which is then always repeated.
The whole arrangement of the machine must correspond to the size of the copies
to be produced also the various parts can be arranged differently according to.
necessity and brought into co-operation.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
1.) A machine for photographically printing from any negative, in which the
sensitized paper or other sheets are pressed by means of a swinging movable-
plate n against the negative plate, whereupon by means of mechanically moved.
exposure apparatus exposure to light is effected.
2.) The exposure apparatus constructed especially in connection with this
machine for the purpose of copying by means of lamp-light, day-light, electric or-
other light as in Figs. 3 to 10, the exposure being effected by means of up and
down-moving slits, which let the different lights pass, or by means of mechanically
opening and closing Venetian blind devices.
3.) The manner of effecting the exposure by apparatus consisting of a turnable
cylinder which is provided with a slit or opening arranged in a second cylinder
equally provided with a slit or opening which arrangement can be used for
exposure by means of gas-, lamp-, candle- or electrical light, Figs. 11-13 and
14-17 and for day-light by using two half cylinders turning one within the other
and provided equally with a longitudinal slit.
All substantially as described and illustrated.
Dated this 16th da
T.I 1000