IMPROVEMENTS IN COPYING PRESSES
Year: 1882

page_text: LETTERS PATENT to Friedrich Hermann Felix Engel, Civil Engineer and
Patent Agent, in the County of Hamburg, Germany, for an Invention of
"IMPROVEMENTS IN COPYING PRESSES." A communication from abroad by
Philion Schneider. of Hamburg, in the German Empire.
PROVISIONAL SPECIFICATION left by the said Friedrich Hermann Felix
Engle at the Office of the Commissioners of Patents on the 20th January
1882.
A commu-
FRIEDRICH HERMANN FELIX ENGEL Civil Engineer and Patent Agent in the
City of Hamburg Germany. "IMPROVEMENTS IN COPYING PRESSES."
nication from abroad by Philipp Schneider of Hamburg in the German Empire.
This improved apparatus which has for its object to facilitate the work of
copying letters or other writings and so forth consists of a square or rectangular
shaped box formed out of two iron parts or frames with upwright sides hinged
together which parts can be unfolded like a book. The Copying book or papers
that have to be copied is or are placed in the free space of the bottom frame or on
top of the upper plate of the bottom frame is furnished with a compartment for the
reception of wetting paper as will be described hereafter and after the closing of
the top frame both parts can be pressed together by a lever arrangement attached
to the sides of the frame opposite the hinges aforesaid. The Copying book or the
papers that have to be copied is or are compressed by the frame parts and can be
used for copying purposes in a similar manner as now generally in use with screw
presses or other known Copying machines.
The hinges combining the two frames as well as the stud or friction roller used
as catch of the pressure lever may be combined with the bottom frame by means
of springs instead of being a direct fixture with this frame and in this case Copying
books of very different thickness as well as very different numbers of sheets of
copying papers may be used for copying purposes or may be copied in one and
the same machine. This elastic arrangement between bottom and top part is
preferably used for larger presses of this improved construction. The springs used

page_text: for combining top and bottom frame as well as the stud or friction roller with the
bottom frame can be made of flat steel bars of nearly the whole length of the
frame and the ends of the springs can be placed on bolts screwed or otherwise
fastened to the bottom frame whilst the middle part of the spring of one side of
the frame carries the hinge of the top frame and the opposite spring carries at its
centre part the stud or friction roller aforesaid.
The bottom frame may in some cases be constructed with a double bottom plate
leaving sufficient space between both plates for the reception of wetting papers
used for copying purposes and the upper plate constructed of sheet iron preferably
must in this case be hinged to one side of the bottom frame to allow the folding
up of this plate for the purpose of opening the compartment containing or receiving
the wetting paper.

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 20th July 1882.
FRIEDRICH HERMANN FELIX ENGEL Civil Engineer and Patent Agent in the
City of Hamburg Germany. IMPROVEMENTS IN COPYING PRESSES." A cominu
nication by Philipp Schneider of Hamburg in the German Empire.
This invention relates to certain improvements in copying presses the object
being to facilitate the work of copying letters or other writings and so forth and
consists of a square or rectangular shaped box formed out of two iron parts or,
frames with upright sides hinged together, which parts can be unfolded like a book.
The copying book or papers that have to be copied, is or are placed in the free
space of the bottom frame or on top of the upper plate if the bottom frame is
furnished with a compartment for the reception of wetting-paper as will be
described hereafter and after closing the top frame, both parts can be pressed
together by a lever arrangement attached to the sides of the frame opposite the
hinges aforesaid. The copying book, or the papers that have to be copied, is or
are compressed by the frame parts and can be used for copying purposes in a
similar manner as now generally in use with screw presses or other known copying.
machines.
The hinges combining the two frames as well as the stud or friction roller used
as catch for the pressure-lever may be combined with the bottom frame by means of
springs instead of being a direct fixture with this frame and in this case copying books
of very different thickness as well as very different numbers of sheets of copying
paper may be used for copying purposes or be copied in one or the same machine..
This elastic arrangement between bottom and top part is preferably used for larger
presses of this improved construction. The springs used for combining top and
bottom frame as well as the stud or friction roller with the bottom frame, can be.
made of flat steel bars of nearly the whole length of the frame and the ends of the
springs can be placed on bolts screwed or otherwise fastened to the bottom frame
whilst the middle part of the spring of one side of the frame carries the hinge of
the top frame and the opposite spring carries at its centre part the stud or friction
roller aforesaid.
The bottom frame may in some cases be constructed with a double bottom plate
leaving sufficient space between both plates for the reception of wetting papers
used for copying purposes and the upper plate (constructed of sheet iron preferably)
must in this case be hinged to one side of the bottom frame to allow the folding up
of this plate for the purpose of opening the compartment containing or receiving
the wetting papers.
In the accompanying sheet of drawings Figs 1 to 5 represent the press without.
the elastic combination and Figs 6 to 11 with the above mentioned elastic
arrangement. The latter apparatus is also furnished with a compartment for the
reception of sheets of wetting paper.
Fig 1 is a ground plan of the copying frame in closed position. Figs 2 and 3 are
section and front elevation respectively of the apparatus with cover closed
previously to applying the requisite pressure whilst Figs 4 and 5 are section and
front elevation respectively of the copying frame after the pressure has been
applied, either during the process of copying or whilst the apparatus is out of use.
During the latter time the copying book is fully enclosed in an iron frame which
will be of advantage for protecting the book against outer mechanical or other
injuries.

page_text: The copying box consists of the top part A and bottom part B hinged together
by hinges d which allow of fully unfolding the top A for the purpose of putting
the copying book R into box B or for removing it from this part of the frame.
Cover B carries a hand lever H fulcrumed on a bolt c and the end of this lever is
formed as a hook by means of which it catches under a roller r attached to the
outer side of the bottom frame B.
The operation of copying is as follows: lever H is placed in position as shown by
the dotted lines in Fig 3 in which position it is kept by a spring catch z. Cover A
is then fully unfolded and copying book R is furnished with the letters or papers
that have to be copied in the well known mode now generally in use with letters
or papers that have to be copied; cover A is then folded down in position shown
by Figs 2 and 3 and lever H is forced down in position shown by Figs 4 and 5.
The copying book is consequently compressed between top and bottom plates of
the two parts of the iron box.
The before described apparatus requires a copying book of a certain thickness to
correspond to the distance between top and bottom plates of the box; this is not
necessary however if the combination between top and bottom part is made elastic
as shown by Figs 6 to 10 of the drawings.
Figs 6, 7 and 8 are ground plan, end and front elevation respectively; Fig 9 is a
section of the apparatus in closed state without a copying book or copying papers
and Fig 10 a like view but with such book in position. Hinge p combining top
and bottom parts is attached to the latter by an intermediate spring F placed on
bolts i, . In a similar manner roller 71 under which the hook or nose of lever H'
catches is connected to the bottom part by an intermediate spring F.
arrangement allows of a lifting of the top part whilst the pressure is applied and
secures an uniform pressure upon the copying material. Fig 10 shows the top part
lifted whilst Fig 9 (without copying book between top and bottom plate) shows
both parts close together.
This
The bottom part of the press is in this case furnished with compartment D used
for reception of wetting paper kept in smooth position between top plate
(turnable on hinges q) and bottom plate of the lower part of the press.
Having now described the nature and particulars of the said Invention I claim :—
Firstly. The two box-shaped parts A and B combined by hinges d d that can be
pressed together by hook lever H and roller r substantially as herein described and
as specified in reference to Figs 1 to 5 of the drawings.
Secondly. The combination of the two boxes A and B by means of hinges
fastened to an intermediate spring carried by bolts of the bottom frame and
hook lever H' and roller likewise combined to the bottom box by an intermediate
spring substantially as described and as specified in reference to Figs 6 to 10 of the
accompanying drawings and
Thirdly. The combination of the two boxes A and B by means of hinges
fastened to an intermediate spring carried by bolts of the bottom frame and hook
lever H and roller likewise combined to the bottom box by an intermediate
spring and with a wetting compartment applied to the botton frame substantially
as herein described and as shown by the respective figures on the accompanying
sheet of drawings.
In witness whereof I the said Friedrich Hermann Felix Engel have hereunto
set my hand and seal this Seventeenth day of July in the year of our Lord