AN IMPROVED PRINTING-AND ROLLING-MACHINE
Year: 1879

page_text: LETTERS PATENT to Friedrich Hermann Felix Engel, Civil Engineer and
Patent Agent, in the City of Hamburg, Germany, for the Invention of "AN
IMPROVED PRINTING-AND ROLLING-MACHINE." A communication from
Ferdinand Schlotke and Louis Hesse, both of Hamburg, in the German
Empire.
Sealed the 19th December 1879, and dated the 25th June 1879.
PROVISIONAL SPECIFICATION left by the said Friedrich Hermann Felix
Engel at the Office of the Commissioners of Patents on the 25th June 1879.
FRIEDRICH HERMANN FELIX ENGEL, Civil Engineer and Patent Agent, in the
City of Hamburg, Germany. "AN IMPROVED PRINTING-AND ROLLING-MACHINE."
A communication from Ferdinand Schlotke and Louis Hesse, both of Hamburg, in
the German Empire.
This machine provides for the printing of both sides of a sheet of paper, as well
as and simultaneously the rolling or glazing of the same, and can likewise be used
for the production of water-marks. The machine consists of two rollers, each of
which is covered with a zinc plate; both rollers rest in adjustable bearings of the
machine frame, and are geared with each other by spur wheels on the axles of the
rollers, and are driven from a motor by means of spur wheel and pinion.
The double printing and the rolling or glazing of both sides of the paper simul-
taneously is produced in the following manner:-The print of each side is first
produced by means of types or lithography separately, each on one side of a sheet of
paper; the unprinted sides of the two corresponding sheets are then placed in exact
register one against the other, and are together passed through the rollers of the
machine, in consequence of which the print of each side is transferred on to the
zine plate of the corresponding roller. The two plates are then prepared by the
action of chemical "mordants" into printing plates in a manner commonly known,
and are then in exactly the original position replaced on the rollers. Each of these
rollers is then put in connection with a printing-ink distributing and inking roller
apparatus of common construction for printing machines to bring printing ink on
to the prepared surface of the rollers. Each sheet of pape which is now passed
through the rollers of the machine is at same time furnished with an imprint on

page_text: both sides, while it is likewise rolled or glazed on both sides through the pressing
action of the rollers.
For producing the required elasticity between the rollers and plates, a few sheets
of paper are placed between both parts.
This machine delivers printings of thorough equal and exact register.
For producing water marks by this machine, the letters or designs of the mark
must be produced in sharp outlines on the zinc plate of one of the rollers, while the
other plate is left smooth. If a sheet of paper is then passed through the rollers
under sufficient pressure, the letters or designs appear in very exact form as a
water mark in the paper. The inking apparatus is put out of action during this
operation.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent_filed
by the said Friedrich Hermann Felix Engel in the Great Seal Patent Office
on the 23rd December 1879.
>>
FRIEDRICH HERMANN FELIX ENGEL, Civil Engineer and Patent Agent, in tho
City of Hamburg, Germany. "AN IMPROVED PRINTING AND ROLLING MACHINE."
A communication from Ferdinand Schlotke and Louis Hesse, both of Hamburg, in
the German Empire.
This machine provides for the printing of both sides of a sheet of paper, as well
as and simultaneously the rolling or glazing of the same, and can likewise be used
for the production of water marks. The machine consists of two rollers, each of
which is covered with a zinc plate; both rollers rest in adjustable bearings of the
machine frame, and are geared with each other by spur wheels on the axles of the
rollers, and aro drivon from a motor by means of spur wheel and pinion, or pulley
and band.
The double printing and the rolling or glazing of both sides of the paper simul-
taneously is produced in the following manner:-The print of each side is first
produced by incans of types or lithography separately, each on one side of a sheet
of paper; the unprinted sides of the two corresponding sheets are then placed in
exact register one against the other, and are together passed through the rollers of
the machine, in consequence of which the print of each side is transferred onto the
zinc plate of the corresponding roller. The two plates are then prepared by tho
action of chemical "mordants" into printing plates in a manner commonly known,
and are then in exactly the original position replaced on the rollers.
Each of these rollers is then put in connection with a printing ink distributing,
wetting, and inking roller apparatus of common construction for printing machines
to bring printing ink on to the prepared surface of the rollers. Each sheet of paper
which is now passed through the rollers of the machine is at same time furnished
with an imprint on both sides, while it is likewise rolled or glazed on both sides
through the pressing action of the rollers.
For producing the required elasticity between the rollers and plates, a few sheets
of paper are placed between both parts.
The machine delivers printings of thoroughly equal and exact register.
For producing water-marks by this machine, the letters or designs of the mark
must be produced in sharp outlines on the zinc plate of one of the rollers, while the
other plate is left smooth.
If a sheet of paper is then passed through the rollers under sufficient pressure,
the letters or designs appear in very exact form as a water mark in the paper. The
inking apparatus is put out of action during this operation.
In the annexed Sheet of Drawings is represented a construction of the machine.
Fig. 1 is a side elevation; Fig. 2, a plan of same. A and B are the two rollers, of
which B is placed in adjustable bearings on the frame of the machine, the degree of
contact of the rollers being effected and regulated by the set screws B'; a and b
are the corresponding zinc plates, the ends of which are fastened in grooves of the
rollers by means of screws c or in other convenient manner; C and D are spur-
wheels fastened to the axles of the rollers A, B, and which are in gear one with
another; E is an intermediate shaft, with fly wheel S and pinion e, of which the
latter gears with spurwheel F secured to the axle of roller B; H, H', are fast and
loose pullies for reception of driving band from a motor; G and G' represent the
printing ink apparatus; r and r¹, the welting rollers, which may be of a construction
commonly in use with printing machines; L is the laying on table for the unprinted
paper; and N, the table on to which the printed sheets are delivered from the
machine.
For producing water marks upon paper by this machine, the designs or letters
must be produced in relief upon the surface of the zinc plate of one of the rollers

page_text: whilst the other plate remains perfectly smooth. The inking apparatus is put out
of action by being drawn back on the frame of the machine, and the paper to be
marked or pressed is passed through the rollers; the design letters or devices will
then appear as distinct water marks in the paper, from the so applied pressure of
the relief plate. It will be seen from the Drawings that the rollers A, B, may be
readily removed for reapplication of other zinc plates or interchangeably with other
similar rollers.
Having now described the nature and particulars of the said Invention, I
claim,―
Firstly. The production of the printing of both sides of a sheet of paper and the
rolling of same simultaneously by means of two prepared zinc plates, which are
placed on rollers, through, over, or between which the paper is passed, substantially
as and in the manner herein described and explained in reference to and shown in
the accompanying Sheet of Drawings.
Secondly. The production of water-marks in paper on this machine by means of
one smooth zinc plate and another zinc plate which has produced thereon the design,
letters, or device in relief, as herein set forth.
Thirdly. The improved machine, as and for the purpose herein set forth and
shown in the Drawings.
In witness whereof, I, the said Friedrich Hermann Felix Engel, have here-
unto set my hand and seal, this Seventeenth day of December, in the year
of our Lord One thousand eight hundred and seventy nine.