A New or Improved Machine for Printing and Dividing Endless Lengths of Paper.
Year: 1893

page_text: COMPLETE SPECIFICATION.
A New or Improved Machine for Printing and Dividing Endless
Lengths of Paper.
I, CARL ERNST PREUSSE of 21 Hospitalstrasse, Leipzig, Germany, Mechanical
Engineer, 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 machine for printing upon and dividing endless
lengths of paper.
The machine consists mainly of two superposed movable tables A1 and A2
(Fig. 1) firmly connected to each other upon which the type or type forms are
fixed, two printing cylinders or rollers B and B and of the rollers C¹ and C²
and D and D2 (for feeding and delivering the paper respectively) which are
driven from the table.
In the connecting piece M of the tables A1 and A2 there is an opening N the
object of which is hereinafter described.
The tables A' and A2 (Fig. 1) move forwards and backwards on guides between
suitably arranged frames.
At the side of each table there is arranged a toothed rod or straight rack a
and a² in which the toothed wheels and engage and which serve to rotate the
printing cylinders.
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The printing cylinders and the toothed wheels are constructed as follows:-
The toothed wheels (Figs. 1, 4 and 5) are loose on the shafts k¹ k² whilst
the printing cylinders are keyed fast thereon.
In each of the former there is a hole in which works a bolt c pressed by a
spring against the wall of the cylinder and bevelled at that end which is directed
towards the cylinder.
In the cylinder cover is an inclined groove d (Figs. 4 and 6). When the table A
moves in the direction of the arrow Fig. 1 the toothed wheel b is carried along
by the rack a¹ and guides the bolte into the groove ₫ where the said bolt meets a
resistance and moves the cylinder B2 with it.
After the cylinder B' has made one revolution it is held fast by the brake E'.
On the rearward movement of the table A¹ the direction of rotation of the toothed
wheel changes and the bolt c slides along the inclined path of the grooved out
of the same and thus the cylinder B' still held (for safety and security) by the
brake E' remains stationary when the table A' moves back.
The construction of the table A2 with the cylinder B2 is exactly similar with the
exception that both work in the reverse direction to A and B¹.
Now since the tables A¹ A² are fixed to each other table A¹ prints only during
the forward movement and the table A² prints only during the rearward movement.
The paper-feeding rollers C¹ C² are located above the cylinder B¹.
The paper is fed in the following manner :-
On the table A is a pillar which moves the toothed rod f with it. The said
rod engages with the ratchet wheel g which is fixed on the shaft of the paper-
feeding roller C2 and thus rotates the latter. This must take place only when the
table A' moves in the direction of the arrow a and only so much paper must be fed
as is required for printing.
Now since as already stated both tables work in opposite directions the paper
which has been printed by table A¹ but is not yet to be operated on by table A³ is
taken up by the oscillating arm with shaft F (Fig. 1) and is held until the table A²
in returning has use for said paper.
Simultaneously with the commencement of the printing period of the table A*
with cylinder B2 the delivery rollers D' and D² (Fig. 1) commence to draw out

page_text: through the opening N (Figs. 1-3) in the connecting piece M of the tables A' A'
the paper which is now printed on both sides.
The delivery rollers are driven from the table A² (Fig. 1) by means of the
rack and ratchet wheel i and must only work during the return movement of
the table A².
On the delivery rollers D' D2 is a perforating comb or other suitable dividing
mechanism which works in the well known manner.
Each table has provided for it a separate inking apparatus G' G² which is
actuated in the well known manner from the tables A and A2 respectively by
means of toothed wheels.
The mode of operation of the machine is as follows:-
The paper is led from the roller H (Fig. 1) which is located behind the machine
over the roller I to the paper feeding rollers C1 C2 under the printing cylinder B¹
over the roller F on an oscillating arm the guide rollers K L under the printing
cylinder B2 to the paper-delivering (i.e. drawing off) and perforating or dividing
rollers D D².
When this has taken place the machine is set in operation.
First the table A' which has already taken up ink begins with the printing
cylinder B and at the same time the rack f and the ratchet wheel g begin to work
in combination with the paper feeding rollers C1 C2 which supply the machine
with the requisite amount of paper.
The oscillating arm with shaft F is depressed in consequence of the feeding of
the paper. The printed paper is always stretched taut and the roller F keeps the
paper in this condition until the table A2 commences to work which takes place
when the table A' has arrived into its end position during which time the table A²
has also taken up ink.
During the printing period of the table A² the paper delivering and perforating
rollers D' D' also commence to work (by means of the rack and ratchet wheel i)
and deliver the paper which is now printed on both sides out of the machine.
This is repeated again and again so that two sides of the paper are printed
during one revolution of the machine. The printed paper is then divided into
suitable portions by means of the perforating combs or other dividing devices
provided on the rollers D¹ D2 or by other equivalent or suitable means as desired.
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 printing machine for printing on endless lengths of paper first on one side
and then on the other having two coupled tables such as A¹ A2 adapted to more
horizontally in opposite directions for the reception of the type in combination with
the two printing cylinders B' and B2 the arrangement being such that by means
of the brakes E and E2 and the engagement of the toothed wheels b' and ² one of
the said cylinders B1 and B2 is kept stationary during the printing period of the
other substantially in the manner and for the purposes hereinbefore described and
illustrated in the drawings hereunto annexed.
2. In the printing machine such as claimed above-I claim the device for feeding
and delivering the endless paper consisting of the racks fand which are provided
with ratchet teeth and are actuated from the tables A¹ and A2 respectively said
racks and engaging with the ratchet wheels g and i (which operate the feeding
and delivering rollers respectively) when the printing rollers have finished their
travel substantially in the manner and for the purposes hereinbefore described and
illustrated in the drawings hereunto annexed.
Tl
C A 1000
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.