Improvements in Book-edge Locks.
Year: 1894

page_text: Date of Application, 22nd Feb., 1894
$
Complete Specification Left, 20th Nov., 1894-Accepted, 15th Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in Book-edge Locks.
We, HARRY LAMBERT SYMONDS, of the Firm of S.. Mordan & Company,
Manufacturers, and RICHARD LANGHORN, Locksmith, both of 41, City Road, in
the County of London, do hereby declare the nature of this invention to be as
follows:-
'
The object of our invention is to so construct book-edge locks that the parts
thereof, especially the hasps, shall be out of the way when the book is open and
in use.
For this purpose, the hasps or catches, with which the bolt of the lock engages,
are hinged or pivotted in a recess, or recesses, formed in a plate secured to one of
the covers of the book, and are adapted to be turned down parallel and flush,
or practically so, with the edge of the said cover when the book is unlocked and in
These hasps are of such a length as to extend across the front of the book,
and their extremities are so formed as to enter the lock and engage the bolt thereof.
The said lock is, according to our invention, secured to, and lies parallel and flush;
or nearly so, with the other cover of the book, instead of being placed across the:
front of the book as has heretofore been usual.
use.
By this arrangement the book when open, and after the hasps are turned down,
does not present any projecting parts likely to cause inconvenience.
DAL
002
1004
ERNEST
DE PASS,
Chartered Patent Agent,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicants..
COMPLETE SPECIFICATION.
Improvements in Book-edge Locks.
We, HARRY LAMBERT SYMONDS, of the Firm of S. Mordan and Company,
Manufacturers, and RICHARD LANGHORN, Locksmith, both of, 41, City Road, in
the County of London, 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, reference being had to the
accompanying drawings and to the letters and figures marked thereon, that is.
to say.
This invention relates to improvements in book, edge locks, and it has for:
its object to so construct the same that the parts thereof, especially the hasps or
catches, shall be out of the way when the book is open and in use.
For this purpose, the hasps or catches with which the bolt of the lock engages,
are hinged or pivotted in a recess, or recesses, formed in a plate secured to one of
the covers of the book, and are adapted. to be turned down parallel and flush,
or practically so, with the edge of the said cover when the book is unlocked and in
These hasps, or catches, are of such a length as to extend across the front of.
the book, and their extremities are so shaped or formed as to readily enter, the lock
and engage the bolt thereof.
use.

page_text: The said lock is, according to our invention, secured to and lies parallel and
Bush, or nearly so, with the other cover of the book, instead of being placed across
the front of the book, as has heretofore been usual.
By this arrangement the book, when open, and after the hasps have been turned
down, does not present any projecting parts likely to cause inconvenience.
And in order that our invention may be readily understood, we proceed to
describe the same fully by aid of the accompanying drawings, in which:
Fig. 1 is a front edge view, showing one of our improved book edge locks applied
to a book.
5
Fig. 2 is a plan, showing the lower cover of the book, with the hasps turned 1
down.
:
Fig. 3 is an edge view corresponding to Fig. 2; and:
Fig. 4 is a plan of the upper cover of the book.
a is the upper cover plate which carries a spring or other lock, and b is the lower
cover plate, both these plates being rivetted to the covers of the book. The cover 1
plate 6. is formed with a recess c, in which are pivotted at d the hasps or catches.d.
Between these hasps is a stop piece c', against which the hasps, when in their
raised position, bear, and by means of which they are prevented from being turned
beyond their vertical position.
The lock carried by the upper cover plate a, is let into a recess in the cover of 2
the book, and. lies Bush with the inner surface of such cover. a' is the keyhole
of the lock, and a² are apertures to receive the notched ends of the hasps. To close
the book, the hasps are turned up into the vertical position, shown in Fig. 1, and
their notched ends directed into the apertures a³, when, by pressing the covers
towards each other, the bolt a of the lock is caused, by its spring, to engage the
Baid hasps and so securely keep the book locked.
To open the book, it is only necessary to insert the key so as to disengage the
bolt from the hasps,.when the cover can be raised, so freeing the hasps and allowing
them to be turned down into the recess c, and to lie parallel and flush with the.
edges of the book as shown in Figs. 2 and 3.
In some cases, instead of employing a lock and key to fasten the hasps, a catch
or push piece may be fitted. in the plate a to engage the hasps, and recesses or
apertures may be formed in the said plate for the hasps to enter..
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 construction of book edge locks in such a manner that their hasps or
catches may be so turned as, to lie. parallel. and flush with the edge of the
book, when the latter is open and in use, substantially as and for the purposes
described.
2. A book edge lock having its hasps or catches pivotted in a recess in one of the
cover plates, and adapted to lie therein when the book is open, but to enter
apertures in the lock and be engaged by the bolt thereof when the book is closed,
said lock being formed in the other cover plate and lying parallel and practically
Bush with the cover of the book, substantially as described and shown.
3. Our improvements in book edge locks substantially as hereinbefore described
and as shown with reference to the accompanying drawings.
".
Dated this 20th day of November 1894: