Improvements in Copying Books.
Year: 1897

page_text: Improvements in Copying Books.
We, ABRAHAM KAHN, of 15, Louisenstrasse, Frankfurt a/Main, Germany,
Merchant, and CHRISTIAN GOTTLOB HOLZWARTH, of Heilbronn, Germany, Merchant,
do hereby declare the nature of this invention to be as follows:-
Instead of the copying book which can only be used in connection with a
copying press, there have hitherto been available only various kinds of copying
rolls which are not very suitable for use for many purposes by reason of their
small circumference, their troublesome manipulation, the looseness of their
sheets &c.
The present invention relates to a modification of the ordinary copying book
such that it can take a convenient shape for packing, that the labour of copying
is somewhat facilitated, and that it is capable of being used in the press when
desired.
The copying book differs in external shape from known forms, only in that
the two side-covers of the binding, instead of being stiff, are made with a central
break" consisting, in the case of the side cover which is inside when the book
is folded, of a hinged connection of the two parts of the cover which allows these
parts to lie close upon each other when folded. The "break".of the other cover
consists of a flexible piece which connects the two halves and is of length equal
to the circumference of the rounded bend on the outside of the folded. book.
Fig. 1 is a front view of the book when opened out. Fig. 2 is an edge view of it.
Fig. 3 is a plan of it opened out and Fig. 4 is a plan shewing it folded.
On folding the book there is first produced a result similar to that which occurs
with the ordinary copying rolls, as in consequence of the roundness. at the fold and
of the shifting of the sheets relatively to one another, the smooth lay of the
moistened blotting paper is ensured, and the tension resulting from the bending
produces a certain amount of impression on the sheets.
When the book is folded its surface-area is so reduced that the pressure of the
hands on it, when laid upon a table or plate, is equivalent to double the pressure
that could be applied to the book when open.
This pressure on the folded book is found to be quite sufficient to produce
good copies.
The convenience of the folded book for packing is obvious, rendering it possible
to pack the book together with ink, pen, and. other writing materials, in a box of
comparatively small size.
Dated this 3rd day of June 1897.
ABEL & IMRAY,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Copying Books.
We, ABRAHAM KAHN, of 15, Louisenstrasse, Frankfurt a/Main, Germany,
Merchant, and CHRISTIAN GOTTLOB HOLZWARTH, of Heilbronn, Germany, Merchant,
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:-
Instead of the copying book which can only be used in connection with a
copying press, there have hitherto been available only various kinds of copying
rolls which are not very suitable for use for many purposes by reason of their
small circumference, their troublesome manipulation, the looseness of their
sheets &c.
The present invention relates to a modification of the ordinary copying book
such that it can take a convenient shape for packing, that the labour of copying
is somewhat facilitated, and that it is capable of being used in the press when
desired.
The copying book differs in external shape from known forms, only in that
the two side-covers of the binding, instead of being stiff, are made with a central
"break" consisting, in the case of the side cover which is inside when the book
is folded, of a hinged connection of the two parts of the cover which allows these
parts to lie close upon each other when folded. The "break" of the other cover
consists of a flexible piece which connects the two halves and is of length equal
to the circumference of the rounded bend on the outside of the folded book.
Fig. 1 of the drawings accompanying our Provisional Specification is a front
view of the book when opened out, Fig. 2 is an edge view of it, Fig. 3 is a plan
of it opened out and Fig. 4 is a plan shewing it folded.
•
When the book is opened out the sheets to be copied are introduced together
with the moistened sheets of blotting paper, or other means of moistening the
pages of the book, as in an ordinary copying book.
On folding then the book there is first produced a result similar to that which
occurs with the ordinary copying rolls, as in consequence of the roundness at the
fold and of the shifting of the sheets relatively to one another, the smooth lav of
the moistened paper sheets is ensured, and the tension resulting from the bending
produces a certain amount of impression on the sheets.
When the book is folded its surface area is so reduced that the pressure of the
hands on it, when laid upon a table or plate can be applied uniformly over the
whole surface, and is equivalent to double the pressure that could be applied to
the book when open.
This pressure on the folded book is found to be quite sufficient to produce
good copies.
The convenience of the folded book for packing is obvious, rendering it possible
to pack the book together with ink, pen and other writing materials in a box of
comparatively small size.
Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed, we declare that what
we claim is: -
A copying book having covers adapted for folding so as to effect the copying of
letters by hand pressure when in a folded condition, substantially as described.
AL
Tab 1808
ABEL & IMRAY,
Agents for the Applicants.