COPYING PRESSES
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said Einil Behrens at the Office
of the Commissioners of Patents on the 25th April 1882.
EMIL BEHRENS of East Greenwich in the County of Kent,
COPYING PRESSES,"
"IMPROVEMENTS IN
This invention relates to improvements in the arrangement and construction of
presses for copying letters or other documents written or printed with copying
ink upon suitable paper or for applying pressure for this purpose as is well
understood.
In carrying out my improvements I construct a portable copying press with two
tray shaped plates the upper one being inverted and fitting into the lower one.
These plates are strengthened by ribs and may if desired be cast or formed with
openings to render them as light as possible compatible with the strength required
to sustain the requisite pressure.
The lower plate is formed with upright lugs having arms which project over the
edge of the upper plate when the two are placed together. The undersides of these
arms are formed with wedge shaped or inclined surfaces in opposite directions.
A bar is mounted so as to revolve upon a centre on the top plate and each end
of this bar has an incline or wedge shaped surface formed thereon which corresponds
and engages with the inclines previously described formed on the projecting arms
on the lower plate.
The copying book or document to be copied is placed between the two plates and
then the inclines on the ends of the revolving bar are drawn under the inclines on
the projecting arms by means of projections formed thereon whereby a suitable
amount of pressure is imparted to the copying book to effect the copying of a letter
or other document contained therein.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Emil Behrens in the Great Seal Patent Office on the 21st October
1882.
EMIL BEHRENS
IMPROVEMENTS OF COPYING PRESSES
This invention relates to improvements in the arrangement and construction of
presses for copying letters or other documents written or printed with copying
ink upon suitable paper or for applying pressure for this purpose as is well
understood.
In carrying out my improvements I construct a portable copying press with two
tray shaped plates the upper one being inverted & fitting into the lower one
These plates are strengthened by ribs and may if desired be cast or formed with
-openings-to-render then as light_as_possible compatible with the strength required
-to-sustain-the-requisite pressure..
The lower plate is forined with upright lugs having arms which project over the
edge of the upper plate when the two are placed together, or the lugs may have
slots and holes.
The undersides of the arms are formed with wedge shaped or inclined surfaces
in opposite directions.
A bar is mounted so as to revolve upon. centre on the top plate and cach end
of this bar has an incline or wedge shaped surface formed thereon which corresponds
-and-engages_with_the_inclines_previously described formed on the projecting arms
on the lower plate, or a bar mounted with an eccentric revolves in the slots and
holes of the lugs.
The copying book or document to be copied is placed between the two plates and
then the inclines on the ends of the revolving bar are drawn under the inclines on
the projecting arms by means of projections formed thereon whereby a suitable
amount of pressure is imported to the copying book to effect the copying of a
letter or other document contained therein or the pressure is exerced by the
eccentric.
In the accompanying sheet of drawings Fig 1 is a ground plan of the copying
press with cover and bar, Fig 2 is a section in front elevation, Fig 3 a side
elevation. Fig. 4 shows the same press with cover and bar mounted with eccentric,
Fig 6 is a front elevation and fig 6. a side elevation of same.
Having now described the nature and particulars of the said invention I claim:
Firstly: The two tray shaped plates fit one into the other without hinges 'or
hooks.
Secondly: The pressure is exerced by means of a wedge or eccentric supplying
the copying power from the centre through means of the lugs upon the cover.
Thirdly: The press consists of three parts of cast iron, without any tooling
whatever being required.
In witness whereof I the said Emil Behrens have hereunto set my hand and
seal this Seventeenth day of October in the year of our Lord One thousand
eight hundred and eighty two