AN IMPROVEMENT IN THE FORMATION OR ARRANGEMENT OF THE COVERS AND BACKS OF ACCOUNT BOOKSAL SPECIATION
Year: 1882

page_text: LETTERS PATENT to John Henry Linsey, Account Book Binder in the employ
of Messieurs Henry Blacklock and Company of Farringdon Road in the County
of Middlesex, Printers and Manufacturing Stationers for an Invention of AN
IMPROVEMENT IN THE FORMATION OR ARRANGEMENT OF THE COVERS AND
BACKS OF ACCOUNT BOOKS
PROVISIONAL SPECIFICATION left by the said John Henry Linsey at the
Office of the Commissioners of Patents on the 20th July 1882.
JOHN HENRY LINSEY Account Book Binder in the employ of Messieurs Henry
Blacklock and Company of Farringdon Road in the County of Middlesex, Printers
and Manufacturing Stationers AN IMPROVEMENT IN THE FORMATION OR ARRANGE-
MENT OF THE COVERS AND BACKS OF ACCOUNT BOOKS
The object of this Invention is to so arrange the covers and backs of Account
books that the leaves or sections of the book when opened shall lie perfectly flat on
both sides, at whatever part the book may be opened.
For the purpose of this Invention I form each cover board with a step-like
portion near where it is to be attached to the back, either by building up the cover
board of two or more pieces as to be thinner at the back portion than at any other
part, or by removing a portion from the back part of say a thick cover.
The back is sufficiently broad that its side edges over lap the thin portion of the
cover, but is not attached to it, the "binding" being secured to the back and to
the thick portion of the cover board only.
By this means the spring of the back and the cover boards is obtained without
the leaves or sections being dragged over with them as in ordinary bound Account
books.
The "back" of the book I graduate from a thin edge at each side to obtain
increased thickness and stiffness at the centre whereby the back will retain its
shape better and for a longer time than by a back of equal thickness throughout.
This graduating of the back is particularly applicable to my stepped cover
boards first described.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Henry Linsey in the Great Seal Patent Office on the
19th January 1883.
JOHN HENRY LINSEY, Account Book Binder in the employ of Messieurs Henry
Blacklock and Company of Farringdon Road in the County of Middlesex Printers
and Manufacturing Stationers "AN IMPROVEMENT IN THE FORMATION OR
ARRANGEMENT OF THE COVERS AND BACKS OF ACCOUNT BOOKS."
The object of this invention is to arrange the covers and backs of Account
books, that the leaves or sections of the book when opened shall lie perfectly flat
on both sides at whatever part the book may be opened.
For the purpose of this invention which I clearly show in the annexed sheet of
drawings Figures 1-2-3 I form each cover board A A with a step like portion B
near where it is to be attached to the bands C C by building up the cover board
of two or more pieces as to be of less thickness at the back portion than at any
other,
The back D is sufficiently broad that the side edges E E overlap the thin
portions B B of the cover, but not attached to it the "binding" being secured to
the "back" D and to the thick portion of the cover board only. By this means
the spring of the "back" and the cover boards is obtained without the leaves or
sections being dragged over with them as in ordinary bound Account books.
The back of the book I graduate from a thin edge E at each side to obtain
increased thickness and stiffness at the centre F whereby the back will retain its
shape better and for a longer time than by a back of equal thickness throughout.
This graduating of the back is particularly applicable to my stepped coverboards
first described.
It will be understood that I can use a plain "back" with my stepped cover
boards if necessary the important feature being the free side edges E E to bear and
slide on the thin or reduced portions B B of the cover boards A A which thin or
reduced portions form the most essential feature of novelty in my Invention as
described and substantially as shown in the annexed drawings for the purpose set
forth.
In witness whereof I the said John Henry Linsey have hereunto set my
hand and seal this eighteenth day of January in the year of our Lord, One
thousand eight hundred and eighty three.