Improved Secret Lock.
Year: 1893

page_text: Date of Application, 4th Dec., 1893-Accepted, 20th Jan., 1894
COMPLETE SPECIFICATIOT
Improved Secret Lock.
I, STEFAN VON BERZENCZEY of Maros-Vásárhely (Siebenbürgen) in the
Empire of Austro-Hungary Landowner, do hereby declare the nature of my
invention to be as follows:-
This invention relates to an improved secret lock which differs from known
similar locks in that it is of very simple construction, and perfectly safe, i.e., cannot
be picked. Referring to the accompanying drawings
--
Fig. 1. is a plan view of the improved lock, fixed at the corner of an iron box.
Fig. 2. is a cross section on line - of Fig. 1.
Fig. 3. is a part longitudinal section on line y-y of Fig. 1.
Fig. 4. is a reverse view of a part of the lock.
This improved lock consists of a combination of several small locks of equal
size and construction, the number of such locks being immaterial for this invention.
Such secret lock can, by increasing the number of the individual locks, be made as
complex as desired, and no key is required to open or close same.
Each of the small locks, forming when combined, the secret lock, consists of a
locking disc c, pivotally arranged between the cover or lid a, and support or frame b,
a segmental portion d, being cut off from said disc c, in such manner that its
periphery does not extend or project over the frame b, when the disc c, is in the
position shown in Fig. 1. On rotating the disc e, however, a full part of its
periphery projects over the frame &, and engages, (as shown in Fig. 2.) with the
horizontal angle e of the lower part of the box, thus effecting the locking. The
disc c, is rotated by means of a prismatic pivot g, fixed on one side of a circular
disc or dial i, provided on the other side with a knob or handle h. The dial i, thus
forms the head of pivot g, and at the same time covers the opening of the lid or
cover a, in which the disc e, with its hub c rotates. The pivot g, passes through a
corresponding hole, arranged in the centre of the disc e (Fig. 4), and is prevented
from being withdrawn by a screw nut, abutting against the support or
frame b.
The disc or dial i, is provided with numerals or letters, as for instance 0-9
around its edge, and it is to be kept in mind which of the numerals or letters is
opposite or corresponds with the centre of the segmental portion d, since the box
can only be opened when such numeral or letter is exactly opposite the mark 1, of
the cover.
Fig. 1 of the drawing shows an arrangement of three locks, which can only
be opened when all the figures o, are directed towards or brought opposite the
marks of the cover. It will be evident that the numerals, letters, or other
characters for opening the secret lock, can be varied or changed as desired. This
is effected by unscrewing the nut k, and taking out the dial i, together with pivoty;
after changing the numerals by simply turning the dial with the pivot, the latter is
again inserted into the hub of the disc and secured as afore-described by the nut or
bolt k. A different number will now appear above the segmental portion d, and
consequently the lock can only be opened, when the new number or character is
opposite the mark l.
As previously mentioned, the lock is rotated by means of the knob or handle h,
of the dial i.
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 :-
An imunod sa leol
chorectariend by the arrangement of any desired.

page_text: number of separate locks of the same or similar construction, each lock consisting
of a disc e, from which a segmental portion, is cut away, and arranged between
the cover or corresponding part a, and support or frame, the lock being closed
when the periphery of the disc c, projects over the support b, and engages with
angle e, (Fig. 2,) and open when the segmental portion d, is directly opposite a
fixed mark 7, substantially as described and shewn in the drawing.
2. An improved secret lock as described in Claim 1, characterized by a prismatic
pivot g, carrying a disc er dial i, passing through the disc c, and support b, and
carrying a nut k, the disc c being rotated by means of a knob or handle h, on said
pivot g, the dial, being provided with numerals or other characters, which, when
directed towards, or brought opposite to the mark 1, allow of the opening of the
lock, substantially as described and shewn.
•
3. An improved secret lock of the kind described in Claim 2, in which the
numerals or characters on the dial enabling the lock to be opened can be changed
by taking out and altering the position of the prismatic pivot g, in the hub of the
disc e, substantially as described and shewn.
Dated 4th December 1893.
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent.