Improvements in Printing Presses for Simultaneous Printing of Two or More Colours.
Year: 1888

page_text: Date of Application, 30th July, 1888
Complete Specification Left, 29th Apr.. 1889-Accepted, 30th July, 1889
PROVISIONAL SPECIFICATION.
Improvements in Printing Presses for Simultaneous Printing of Two
or More Colours.
We FRANZ XAVER HÖBZLE and CARL SPRANGER of Brunnstrasse 9, München in
the Empire of Germany Manufacturers do hereby declare the nature of this invention
to be as follows:-
This invention relates to printing presses whether platen presses or cylinder presses
of any kind and consists in certain mechanism to be applied thereto for enabling the
same to print in two or more colours and produce a finished print for each pull of the
machine.
The inking mechanism and other parts being divided according to the number of
colours to be printed so as to move and print simultaneously beside each other suitable
mechanism is provided for automatically transferring the sheet in successive stages
through the press until it eventually issues printed in all the colours desired. As each
printed sheet passes from under the respective colour its place is taken by a fresh
sheet so that for each impression a fresh sheet may be passed into the machine and
after the first has been printed the sheets will pass out, one for each pull and printed
in all the colours desired. In a platen pross for two colours there is provided a
clamping mechanism along the length of the plates and a prismatic bar capable of
sliding back and forth and carrying also suitable clamping fingers. The fresh sheet
being placed in the press is held by the stationary clamps or by the movable clamps,
and after printing is moved along the platen by the movable bar, is left under the
stationary clamps and is printed with the second colour a fresh sheet being simul-
taneously inserted in the place vacated by the former. After the next impression the
second sheet is seized by the movable clamps and transferred to the second place the
first sheet being removed printed, suitable mechanism is provided for loosoning
the clamps during the intervals desired for the movements described. The clamps may
be a series of spring fingers fixed on a rocking bar. The device as applied to a
cylinder press is substantially similar, a clamping device is arranged the whole length
of the cylinder and a secondary movable clamping device is arranged therewith the
latter moving along the cylinder at the desired times and transferring the sheet from
one to another colour. The mechanism for moving the transferrer is however slightly
different for whereas in a platen press a rocking lever is employed in a cylinder press
a rotary screw spindle of steep thread engages in a sleeve affixed to the transferrer or
instead of this spindle an endless band may be used with means for moving same so as
to draw the transferror back and forth.
D
HERBERT & Co.,
Agents to Applicants.
COMPLETE SPECIFICATION.
Improvements in Printing Presses for Simultaneous Printing of Two
or More Colours.
We FRANZ XAVEr Höbzle and Carl Spranger of Munich 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:
This invention relates to printing presses whether platen presses or cylinder presses
of any kind and consists in certain mechanism to be applied thereto for enabling the
same to print in two or more colours and produce a finished print for each pull of the
machine

page_text: The inking mechanism and other parts being divided according to the number of
colours to be printed so as to move and print simultaneously beside each other suitable
mechanism is provided for automatically transferring the sheet in successive stages
through the press until it eventually issues printed in all the colours desired. As each
printed sheet passes from under the respective colour its place is taken by a fresh
sheet so that for each impression a fresh sheet may be passed into the machine and
after the first has been printed, the sheets will pass out one for each pull and printed
in all the colours desired. In a platen press for two colours there is provided a
clamping device along the length of the platen and a prismatic bar capable of sliding
back and forth and carrying also suitable clamping fingers. The fresh sheet being
placed in the press is held by the stationary clamps or by the movable clamps and
after printing is moved along the platen by the movable bar, is left under the
stationary clamps, and is printed with the second colour, a fresh sheot being simul
taneously inserted in the place vacated by the former. After the next impression the
second sheet is seized by the movable clamps and transferred to the second place the
first sheet being removed. printed, suitable mechanism is provided for loosening
the clamps during the intervals required for the movements described. The clamps
may be a series of spring fingers fixed on a rocking bar. The device as applied to a
cylinder press is substantially similar, a clamping device is arranged the whole length
of the cylinder and a secondary movable clainping device is combined therewith, the
latter moving along the cylinder at the desired times and transferring the sheet from
one to another colour. The mechanism for moving the transferrer is however slightly
different for whereas in a platen press a rocking lever is employed, in a cylinder press
a rotary screw spindle of steep thread engages in a sleeve affixed to the transferrer, or
instead of this spindle an endless band may be used with means for moving same so as
to draw the transferrer back and forth.
The application of the contrivance to a platen printing press is shown in Figs. 1 to 4
of the accompanying drawings. Fig. 1 being a plan view of the platen of the printing
press, Fig. 2.a detail view, Figs. 3 and_3_cross sections and Fig. 4 a side elevation.
The edge of the platen is provided with a sliding bara having-the-length of the
platen and arranged in a groove n in the same. The upper face of this bar is in the
same plane or nearly so as the surface of the platen and is recessed as shown in
Fig. 3 to receive an oscillating rod a' turning in bearings. This rod is controlled by
spiral springs a³ so that the fingers a thereon are kept pressed on the upper edge of
the sliding rail a. The bar a is moved back and forth after each impression by a
suitable lever such as H, the platen having retired to its resting position. Beside the
fastening a taking the whole length of the platen is a second system 6 on the outer
edge of the platen.and taking only the right half of the length. The fingers of this
second system are so formed that the fingers a³ may slide under them; their ends
project in front of the ends of the fingers a³ and lie on the platen. The sheet
being put in the fingers of the system a are lifted a little by the action of a
cam on the lever a this cam being operated by the action of the weight con
the oscillating shaft e¹ of the cam. As the platen during the impression becomes inclined
to the vertical the cam c² fulls away so that the fingers a³ are pressed by means of the
springs a outo the sheet and so fasten the same. The printing takes place in the
known manner; the platen is carried back to its resting place and the system a is
brought to the right side on the second half of the platen by means of the lever H
beforementioned. To this end the fingers of the second system 6 are opened for
which purpose there is on the sliding bar a a sliding part a connected with a rod e
influenced by the two spiral springs e¹ and situated in the sliding bar a. Moving to
the right side this rail d arrives under the turning pin 6 of the system 6 so that the
latter is lifted till a is moved to the right side for the half of its length, that is to say
the left half of the system a corresponds with the right one 6 and the sheet covers
exactly the right half of the platen. In order to keep the sheet, the fingers of the
system.6 are closed by the left end of the rod d being slanted off so that the pin b
falls down from the same and the fingers are pressed down by the spiral spring on
the rod carrying them. In order to render the system 6 influenced by the rod d
b

page_text: during the sliding back of the system a the pin 63 is made to slide and is pressed in
by a spring as shown so that during the back movement of the rod d its bevelled
end d³ does not lift but simply presses back the pin 63. Before the sliding back of the
system a takes place it must be opened. To this end the block on the rod eis wedge
shaped and
guided with a slot so when the system a has already arrived at its
resting position by touching the platen on the right half, the rod e moved still a little
further to the right brings the bevelled face of the block under the pin of the
rod a¹ and so lifts the fingers a³. As the system a is moved back, the first sheet is left
on the right. At the end of this movement the lever a on the rod a¹ has arrived
in. the position over the cam c³ which it had at the beginning of the operation so that
the fingers a are opened still further and ready to receive a new sheet. After the
second impression, the system a transfers both the sheets, that is, the second one onco
printed to the second printing place, and that twice printed out to the right side of the
machine. As the right half of the system a extends to the right side over the end of
the platen on opening the fingers as the sheet may be spread out on a table corre-
spondingly arranged to receive it.
The systems work in the same manner on the cylinder steam presses of course with
the necessary modifications as illustrated in Figs. 5 to 17. The cylinder steam press
has already a system exercising the functions of the system 6 specially arranged on
the platen printing press and the putting out takes place in the known manner with
these machines. A toothed rack is arranged in each steam press on the frame moving
together with the latter and periodically taking the cylinder for printing.
This toothed rack moves the small toothed wheel ; this is geared to a toothed
pinion connected to the larger toothed wheel y from which the operation of the
system a takes place through the toothed pinion y¹. This is connected with a
spindle with steep screw thread which produces the back and forth movement of the
system a in the manner hereinafter described.
The toothed pinion y¹ is capable of sliding on the end of the spindle g so as to move
the spindle only so long as the large toothed wheel y moves in one direction from right
to left or vice versa.
The movable system a having in the cylinder presses only half of the cylinder
length is situated under the fingers barranged on all machines of this system. It
consists of the bar a the front edge of which is a little lower than the face of the
cylinder and which is moved horizontally with the fingers, and of the fingers fixed on
the rocking rod a¹ thereon. The sliding rod a is guided by eyes engaging on the.
guide rod .
The spindle gears in a block 9' guided by two eyes g³ on the guide bar y*.
Between the eyes is situated the side piece e to operate the sliding rod S moving
with its forked end the toothed wheel y' at the corresponding moment and so stopping
the turning of the spindle g.
The block g is controlled on both sides by the spiral springs e¹. The sheet is
put in on the right side to receive its first printing.
When this operation has taken place the cylinder remains at rest. While the
large toothed wheel driven by the toothed rod on the frame is revolved to the left
the small toothed wheel turns the spindle g, and block g' moves the fastening
system to the left side and carries the once printed sheet onto the second half of
the cylinder. When the sheet has arrived at its right place the fingers a³ are
opened by the block g¹ being moved a little further and causing the inclined pro-
jection on the block c to strike up the pin II. Simultaneously by the pin III
the rod S is moved and the toothed wheel y' also so that it is brought out of gear
and does not revolve the spindle g until the large wheel y revolves in the other
direction. When the cylinder begins to turn again and the large toothed wheel
is moved to the right the fastening system is carried again to the right side.
Before this happens the fingers as already mentioned are opened, and the sheet is
set free while the sheet is fixed on the second half by the usual mechanism
of the press. When the finger system arrives again in its original position the
fingers are lifted a little by means of the pin III and the latch k (Fig. 8) and then
•
y

page_text: lowered again so that the fingers which were under the edge of the paper are raised
above it lifting it, and when lowered again press the sheet onto the rail a. Fig. 11
illustrates, the method of using an endless band for moving the system a. Figs. 12 to 17
illustrate a modification for platen or cylinder presses of the mechanism for opening
the fingers of the system; the stationary dogs a depressing the levers w on the
block g and so raising the blocks c under the pins II or III.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
In platen and cylinder printing presses.
1. The combination with a fixed or stationary series of clamping fingers of a sliding
reciprocating transferrer adapted to engage the sheet and transfer the same substantially
as and for the purpose set forth.
2. The constructions of transferrer for platen and cylinder presses substantially as
herein before described and-illustrated for the purpose set forth.
Dated this 29th day of April 1889
HERBERT & Co.,
18, Buckingham Street, Strand, W.C., Agents to Applicants.