IMPROVE- MENTS IN LETTER COPYING BOOKS FOR COPYING LETTERS AND OTHER WRITTEN AND PRINTED DOCUMENTS to be as follows
Year: 1885

page_text: other Written and Printed Documents.
I WILLIAM HOWARD of 35 Albert Street Regents Park in the County of
Middlesex Stationer do hereby declare the nature of my invention for "IMPROVE-
MENTS IN LETTER COPYING BOOKS FOR COPYING LETTERS AND OTHER WRITTEN
AND PRINTED DOCUMENTS to be as follows:-
دو
This Invention relates to improvements in letter copying books for copying
letters and other written and printed documents.
It is well known that the leaves of letter copying books frequently break away
from the binding owing to the damp or moisture in damping the paper acting on
the glue used in the binding and the object of my invention is to remedy this
objection and prevent this difficulty from occurring as much inconvenience arises
therefrom.
For this purpose according to my improvements I wholly or partially waterproof
the paper at the binding margin so that its strength is not affected by the moisture
used in preparing the paper for the copying process.
The waterproofing of the copying paper may be effected during the process of
its manufacture or it may be applied or effected afterwards.
TONGUE & BIRKBECK,
Agents for the Applicant.
other Written and Printed Documents.
I WILLIAM HOWARD of 35 Albert Street Regents Park in the County of
Middlesex Stationer 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 improvements in letter copying books for copying
latters and other written and minted

page_text: It is well known that the leaves of letter copying books frequently break away
from the binding owing to the damp or moisture in damping the paper acting on
the glue used in the binding and the object of my invention is to remedy this
objection and prevent this difficulty from occuring as much inconvenience arises
therefrom.
For this purpose according to my improvements I wholly or partially waterproof
the paper at the binding margin at a a as represented in the accompanying
drawing of a copying book when open so that its strength is not affected by the
moisture used in preparing the paper for the copying process.
The waterproofing of the copying paper may be effected during the process of
its manufacture or it may be applied or effected afterwards, and I find that any
ordinary resinous varnish serves to waterproof the paper sufficiently for the
purposes of my invention or the binding margin may be converted into what is
known as vegetable parchment to render the same waterproof.
It is found that the leaves of ordinary letter copying books tear away from the
binding and that the binding itself falls to pieces through the glue used in
manufacture being acted upon when in use this objection being entirely obviated
by my improvements.
The advantages of this copying book are as follows:-
-
That it does not require any special kind or quality of paper.
That it does not increase the thickness of the book.
That it requires no special binding and can be supplied to any pattern.
That the leaves are in no way disfigured as the waterproof margin rather
enhances the appearance of the book when open.
That being waterproof in the binding there is no possibility of the leaves coming
away from the back.
That the very slight thickness gained by the process of waterproofing is an
advantage as it allows for the natural swelling of the book during the time of
using.
Having now particularly described and ascertained the nature of my said.
invention and in what manner the same is to be performed I declare that what
I claim is:
-
The waterproofing of the paper wholly or partially at the binding margin of
letter and other copying books substantially in the manner and for the purpose
berein before fully described and illustrated.