An Improvement Applied to the Carbonic Leaves Used in Duplicate or Manifold Writing.
Year: 1888

page_text: PROVISIONAL SPECIFICATION.
An Improvement Applied to the Carbonic Leaves Used in Duplicate
or Manifold Writing.
We WILLIAM LOVEL BONNETT and GODFREY MASON SHUM of the firm of Bonnett
and Shum of 43 and 44 Jowin Street, London in the County of Middlesex, Wholesale
Stationers, do hereby declare the nature of this invention to be as follows:-
This Invention relates to an improvement applied to the carbonic leaves used in
duplicate or manifold writing whereby they will be more securely held within
memorandum or sales books and last longer than hitherto.
The sheet of tissue or thin paper which covers one face of the carbonic paper when
in use and permits its being secured bookwise within covers, or detachable leaves; is
now fixed thereto by pasting or gumming the one paper to the other, near the edge
without folding back upon itself, so that when the paper is opened and placed book-
wise within the covers elastic band or clamp by which it is secured comes between
the carbonic leaf and the tissue cover thereof.
This method of uniting the two papers is defective inasmuch as the elastic or other
cord being inserted between the carbonic and its protecting paper it exerts a separating
and wedging tendency which speedily parts them.
We obviate this defect by taking a piece of tissue, or covering paper of somewhat
larger size in one direction than the carbonic paper which it is to cover, this enlarge-
ment we fold over, thus bringing both sheets to the same size, and we then attach the
tissue paper by this fold to the carbonic paper so that when the paper is folded book-
wise within the manifold writing or sales book the elastic band or rod which retains
it therein will no longer press between the sheets but in the fold thus formed and no
separation can take place except by actually severing this paper.
1
1
T
third dex of Narch 1888

page_text: or Manifold writing.
We, WILLIAM LOVEL BONNETT and GODFREY MASON SHUM, of the firm of
Bonnett and Shum of 43 and 44 Jewin Street, London, in the County of Middlesex
Wholesale Stationers, 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 an improvement applied to the. carbonic leaves used in
duplicate or manifold writing whereby they will be more securely held within
memorandum or sales books and last longer than hitherto.
We will now proceed to describe our invention by reference to the accompanying
sheet of Drawing upon which
―
Figure 1 represents a carbonic leaf and a leaf of tissue or thin paper secured
together according to our invention and ready for use.
Figure 2 is an end view of same, and
Figure 3 illustrates the relative position of the carbonic and paper leaves when
folded bookwise.
Figure 4 represents the ordinary method of attaching the leaves.
A being the tissue paper.
B is the carbonic paper.
C is the fold into which the elastic retaining band or rod enters.
D the elastic band or wire.
Similar letters of reference indicate similar parts in each of the figures respectively.
The sheet of tissue or thin paper (A) which covers one face of the carbonic paper (B)
when in use and permits its being secured bookwise within covers, or detachable leaves,
is now fixed thereto by pasting or gumming the one paper to the other near the edge
without folding back upon itself, so that when the paper is opened and placed bookwise
within the covers the elastic band or clamp (D) by which it is secured comes between
the carbonic leaf and the tissue cover thereof, as illustrated Fig. 4.
This method of uniting the two papers is defective inasmuch as the elastic or
other cord (D) being inserted between the carbonic paper (B) and its protecting
paper (A) it exerts a separating and wedging tendency which speedily parts them.
We obviate this defect by taking a piece of tissue, or covering paper (A) of some-
what larger size in one direction than the carbonic paper (B) which it is to cover;
this enlargement we fold over, thus bringing both sheets to the same size, and we
then attach the tissue-paper by this fold (C) to the carbonic paper so that when the
paper is folded bookwise within the manifold writing or sales book, as at Fig. 3, the
elastic band or rod (D) which retains it therein will no longer press between the
sheets but in the fold (C) thus formed and no separation can take place except by
actually severing this paper.

page_text: 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 :-
1. The combination of a carbonic leaf for manifold writing, with a covering paper,
in the manner substantially as described.
2. The use in duplicate or manifold writing of a carbonic leaf (B) united to a
covering leaf (A) by a fold (C) which receives the pressure of the retaining band or
clamping rod (D) of the book, substantially as hereinbefore described and illustrated
on the accompanying drawing, for the purpose specified.
Tabad thin m
C
1000