Improvements in Locks.
Year: 1892

page_text: Date of Application 13th Dec., 1892-Accepted, 11th Mar., 1893
COMPLETE SPECIFICATION.
Improvements in Locks.
I, WALTER BRIERLEY of Penny Bank Chambers Halifax, in the County of
York, Patent Agent do hereby declare the nature of this invention which has been
communicated to me by Konrad Fehr, Brewer and Hans Bromig, Merchant,
both of 61 Konigsstrasse, Nurnberg in the Empire of Germany, 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 improved lock for boxes, trunks, chest of drawers,
doors and other articles and is to be operated or opened and shut without the use
of keys, but by the use and employment of turning or revolving two or more dises
to certain marks or indices which are known only to the person authorized to open
or close the locks. The invention consists in securing the catch or hook of the
lock by means of two or more discs mounted on centres and so long as the discs do
not at the same time lic in a certain position the catch or hook of the lock cannot
pass through slits which are formed in the discs, and the lock remains closed. The
discs are turned on their axes by projecting buttons. The buttons are provided
with a notch, centre mark or index, which before unlocking the lock must
correspond with a mark or index upon the upper plate or on the ornamented
escutcheon of the lock. In order to render the unlocking difficult or impossible
one of the catching discs may be mounted on the turning arbor, so that the sign or
index of the button must lie or point in a different direction to the other mark or
index on the plate of the lock than the sign of the second or other buttons.
The locks may be finished in different manners according to the articles to which
they are to be applied, as will be seen from the annexed drawings.
Such being the nature and object of our said invention the following is a
complete description of same, reference being had to the accompanying drawings
in which ==
Fig. 1 shews a longitudinal section of a lock which is applicable to trunks and
doors.
Fig. 2 shews the same construction of lock as seen from below or the inside.
In the case or box a the discs bare mounted on the stems of the buttons c and
there is thus a space or short distance between the two dises in order to leave
room for the centre-rib of the catch or hook of the flap d. Each of the discs b
has a small saw gate or slit in its periphery so that when both of the saw gates or
slits exactly face each other, the whole hook h may be passed first through the
opening of the case or box a and then behind the discs b. In this position the
marks or indices of each button lie upon or opposite a certain sign or index on
the plate a and in order to unlock, both buttons must be placed upon these
points.
If the discs or either of them are not exactly turned to the correct position, i.e.
with the two saw gates or slits opposite to one another, it will be impossible to open
the lock and it will be most difficult for an unauthorized person, to open the lock
without knowing the signs, marks or indices.
Figs. 3 and 4 are views of similar locks to Figs. 1 and 2 but the discs are
changed inasmuch as they have in addition to the slits in the periphery, the
concentric slits as shewn, so that there are tongue shaped branches f formed which
pass through corresponding holes h in the flap d the latter being in this case sunk
into and screwed tight to the lid of the box or trunk (see Fig. 4). The box or
case a is sunk into the lower part of the box or trunk and fixed there, so that only
the buttons c. c appear, the marks or indices of which are brought to agree with
certain signs or marks on the ornamental escutcheon. The above described lock
ro 077

page_text: is chiefly applicable to those boxes or trunks the lids of which are opened
upwards.
Figs. 5. and 6 shew a construction of locks chiefly applicable to drawers. In this
case the discs are shaped like those in the lock first described (see Figs. 1 and 2)
only the catch hooks h are formed fork like and the case'a has at the back and also
in the coverplate slits for the hooks h to pass through which hooks in this case are
net.applied from above but slide from the side behind the discs; the rest of the
lock is constructed like the ones previously described.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
A double or more fold secured lock so designed that the catch hooks h of the
flap d may be passed through slits and behind or below the discs b said locks being
only unloosed if the discs mounted to the buttons c are placed so that the slits face
each other, or are in such a position as to enable both hooks h at the same time
to be removed, which position may be obtained by means of the marks, signs or
indices on the buttons, and box, plate or escutcheons.
Dated this 12th day of December 1892.
WALTER BRIERLEY.