Improvements in Hooks.
Year: 1894

page_text: Date of Application, 18th Jan., 1894
Complete Specification Left, 25th May, 1894-Accepted, 7th July, 1894
PROVISIONAL SPECIFICATION.
Improvements in Hooks.
EDWARD AUGUSTUS SANDFORD and HORATIO SANDFORD, trading as
E. A. & H. Sandford Engineers, Thames Iron Works, Gravesend Kent do hereby
declare the nature of this invention to be as follows:-
This invention relates to a self locking hook, by which means any article having
a loop or eye attached may be placed on the hook, and on a person pressing the
hook it springs in and locks itself, and can only be released by a person operating
from the opposite side, or by a key to unlock it.
This invention relates to a self locking device to be used in connection with
hooks for various purposes, as applied to a door, gate, shelf, ledge, battern, or of
any article that may be arranged where a person can operate on either side.
This newly invented hook will consist of a casting of any suitable material,
consisting of a flange and sleeve, the flange or lip to have a small recess for the
point of the hook hereinafter described to fit in, and screw holes in flange for fixing
to door or other article. The sleeve of casting will be made long enough to pass
through the door or other article, and to have a (preferably) square hole cast
through the sleeve with a slightly tapered recess on the top side of the said square
hole so as to receive the nib or stop attached (or part of the spring) hereinafter
described to prevent the hook from being pulled out, unless the spring be gripped
and closed a second time, or by means of a small stop fixed to the end of hook.
The hook to be of any suitable material to fit the square hole in sleeve (mentioned
above) at the flanged or lipped end, so that it causes the point of the hook to fit &
fill the recess in flange or lip when the hook is pushed in and closed.
The square
end of hook for nearly the length of the sleeve will be tapered, and a steel spring
with the nib (before mentioned) will be fixed on the taper side of the square end of
hook, and the nib or stop adjusted in a position so that when the hook is closed the
said nib springs into position at the back of the sleeve, and thus prevents the hook
from being withdrawn.
The spring will be extended beyond the socket, and so enable a person to press it
down and thus release the hook, which can then be pulled out until the said nib or
stop springs into the recess in the sleeve before mentioned and prevents the hook
from being pulled right out. Any suitable article which it is desired to secure can
now be placed on the hook, and then the hook can be pressed into and through the
sleeve until the nib springs up behind the sleeve, and with the same movement the
hook will have fitted in the recess in flange or lip and is locked. The method for
applying the hook to a wall, or to any position in which a person can only operate
ou one side, & for purposes where extra security is required it will be arranged as
follows:-The flange or lip would be secured to the wall, and the sleeve part will
project outward, the hook will be at the sleeve end, and there will be a projection
cast on the end of the sleeve to receive the point of the hook. When the hook is
pressed into the projection on the end of sleeve the nib will spring into position
behind the flange or lip as before described thus locking itself. At the side of the
socket will be a keyway hole all contained in the same casting, and through the key
hole a key can be passed until the ward of key has passed the said flange or lip, and
then by turning the key the spring will be pressed down until the nib is flush with
the hole in the sleeve and thus release the hook.

page_text: The book will be prevented from being pulled entirely out as before described, or
by means of a small stop fixed to the end of the said hook.
Dated this 16th day of January 1894.
EDWARD AUGUSTUS SANDFORD.
HORATIO SANDFORD.
COMPLETE SPECIFICATION.
Improvements in Hooks.
EDWARD AUGUSTUS SANDFORD and HORATIO SANDFORD, trading as
E. A. & H. Sandford, Engineers Thames Iron Works, Gravesend, Kent, 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:
of
The invention relates to a "spring locking hook" for various purposes it is
composed of a casting of any suitable material consisting of a flange and sleeve, the
flange or lip made with a recess to receive the point of the hook and holes in the
flange to receive screws, the sleeve is made with a round or preferably square or
rectangular hole with a slightly tapered recess on one side. The hook is composed
any suitable material to fit the hole in the sleeve. The parts of the hook fitting
the sleeve is tapered smaller nearly the length of the sleeve, and to this part of the
hook the steel spring is fixed. The spring has a countersunk hole at one end for a
rivet or screw, and a nib projection at the other, which nib fits recess in sleeve when
hook is opened, and to fit back of sleeve when hook is closed. The spring hook is
particularly suitable for the fixing of say a milk can to a door. The method of
using is to screw the sleeve A to a door by means of screws in flange B, release
spring by pressing end of spring C and press hook D forward until E is held by
recess, the can is then placed on hook D and the hook pressed into flange B, and
by this movement the nib E will spring behind sleeve at F and is then locked or
prevented from being moved from the outside of door, gate, batten or shelf to
which the sleeve may be fixed.
Instead of screw holes in flange B the sleeve F may be secured by screwing the
outside of sleeve F which when passed through door or battern may be secured by
means of a nut screwed on end of sleeve F.
In extension of this invention and its application, for example if it is desired to
fix the sleeve A by the flange B to a wall or any position in which a person cannot
operate to press the spring C it is performed with the addition of the key L and for
this purpose the parts are made of any suitable material as follows: The flange B
is made with a projection or sleeve and recess in same at I to receive the point of
the hook, and the inside of the flange B is hollow as shewn at K and through
flange B there is a keyhole, also holes in flange to receive screws, the sleeve is
made with any suitable form of hole, with a slightly tapered recess on one side.
The hook is made to fit the hole in the sleeve, the part of the hook fitting the
sleeve is tapered smaller nearly the length of the sleeve, and to this part of the
book the spring is fixed. The nib end of spring is bevelled to a suitable angle,
and projects sufficiently beyond flange for the ward of a key to press the bevel of
hook, which movement closes the spring and at the same movement presses the
hook forward. The key is made with a handle at one end and a ward at the other
end. The ward fits in the keyhole at the side of the projection on flange and is
slightly bevelled to suit the bevel on nib end of spring. The ward of key turns in
the recess of flange. The spring has a countersunk hole at one end for a rivet or
screw, and a nib projection at the other, which nib fits the recess in sleeve when
hook is opened outwardly, and the nib fits the back of sleeve when hook is closed.

page_text: Having now particularly described and ascertained the nature of our said
invention, and in what manner it is to be performed, we declare that what we
claim is :-
No. 1. is a hook or fastening that can be locked from outside, and the movement
of locking secures the article attached to hook, and the hook can only be unlocked
from the reverse or inside.
No. 2. is a further development and extension of No. 1. and we claim is a self
contained hook or fastening that can be locked in a similar manner to No. 1 without
a key, and the movement of locking secures the article attached to hook, but
unlike No. 1. the hook can only be released by means of a key of such form as will
fit the nib of spring.