Improvements in Platen Printing Presses.
Year: 1897

page_text: Date of Application, 8th Apr., 1897-Accepted, 22nd May, 1897
CUMI LEIE DIEUTICATIVA
Improvements in Platen Printing Presses.
We, ALBERT JOISTEN, Printer of 31 Agrippasstrasse, and JOSEF MAY,
Agent of 64 Andreaskloster, both in Cologne, 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 in and by the following statement :-
This invention relates to a platen printing press, in which the pressure plate
stands still, whilst the type plate (the base plate) for the purpose of receiving the
color from a color distributor moves to and fro in a longitudinal direction after the
manner of cylinder presses, stands still at the moment of printing, and is pressed
against the pressure plate by means of an eccentric.
In the annexed drawing the press is partly shown in side view. All parts which
are not of importance in this invention are left out in order to better show the
essential parts.
a is the fixed pressure plate which can be turned upon a hinge.
b is the type plate, which is displaceable in longitudinal direction and rests in a
carriage which can swing round the point d and is supported by the eccentric
disk fof the driving shaft g. For the purpose of receiving the color from the
color work m which is constructed after the manner of the color mechanism of a
cylinder-press, the type plate is moved to and fro on the carriage e by means of
the guiding rod h and the crank disk i. At the moment of pressure the eccentric
disk presses the carriage c and thus also the type plate b against the pressure
plate. This occurs as the type plate is at the dead point between its out and
return stroke because as it strikes against the pressure plate the point of
connection of rod h at k, k¹ are in a line which passes through the axis of
shaft g.
The paper carrier, which is not part of this invention, consists of an endless
baud n on which are placed means for gripping the sheet.
These grippers are opened by hooks q and r guided in any manner near the on
laying or on the taking off place, so that the sheets which are to be printed
and which are automatically conducted are automatically put on and when printed
are automatically delivered. The mechanisms for the automatic movement of the
hooks and as well as those for the guiding of single sheets to the grippers
from the plate p are not shown since they do not form part of this invention.
The movement of the transporting band n is intermediary and is effected by a
toothed rod, toothed wheel etc. connected solidly with the carriage c and by the
disk w provided with ratchet gear.
The machine may also be built vertically.
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 platen printing press, by which a plane type plate 6 is colored by means of
a color work 'm constructed after the manner of the color works of cylinder
presses, the said type plate being movable laterally for this purpose.
2. A construction of printing press as claimed above, in which the type plate b
is arranged to be displaceable in a carriage c which is operated so as to receive a

page_text: swinging movement by an eccentric or the like, the type plate being displaced by a
crank.
Dated this 8th day of Anril 1907
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, Agents to Applicants.