Improvements in and relating to Keys for Locks, Bolts, and the like.
Year: 1894

page_text: Date of Application, 12th Apr., 1894
Complete Specification Left, 27th Aug., 1894-Accepted, 9th Feb.. 1895
PROVISIONAL SPECIFICATION.
Improvements in and relating to Keys for Locks, Bolts, and
the like.
We, SALOMON RADLAUER, HERRMANN LUBSZYNSKI and EUGEN WIDEMANN
all of 89 Kominandantenstrasse Berlin in the German Empire, Manufacturers, do
hereby declare the nature of this invention to be as follows:-
This invention relates to keys for operating locks bolts or the like.
In order that the nature of our invention may be more readily understood we
have hereto appended a sheet of drawings reference to which is hereinafter made.
Figures 1 and 2 illustrate in side and end elevations respectively one of the
simplest forms of key in its operative position.
Figures 3 and 4 represent a more complex form of key in its operative and
inoperative positions respectively.
As will be seen on reference to the drawings the key consists essentially of at
least two parts a and a hingod or pivoted together at bl.
More links a² a", may
be added and pivoted at 66, according to the use for which the key is destined.
The keyhole may be formed of any desired section so as only to admit a corre-
spondingly formed key and thus ensure the insertion of the correct one. The locks
or bolts are also preferably provided with a keyway in which the last link of the
key accurately fits.
In the simple form of key shewn in Figures 1 and 2 the loose link a¹ is engaged
with the end of the bolt so as to operate it upon the least rotation being given to
the part a by its handle.
In the more complex form illustrated by Figures 3 and 4 there is placed beneath
the inner end of the key hole a rounded or polygonal guide A. Unless the links of
the key are exactly proportioned to the curve or the angles of the piece A the end
link can not engage with the bolt or lock. Unauthorised opening of the lock is
thus absolutely prevented.
Dated this 11th day of April A.D. 1894.
WILLIAM E. HEYS,
Agent for the Applicants.
штотошеню лади тетаник
was 10 LOCKS, DUI, and
the like.
We, SALOMON RADLAUER, HERRMANN LUBSZYNSKI and EUGEN WIDEMANN,
all of 89 Kommantenstrasse Berlin, in the Empire of Germany Manufacturers,
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 :-
This invention relates to keys for operating locks, bolts or the like.
In order that the invention may be more readily understood we have hereto
appended a sheet of drawings reference to which is hereinafter made.

page_text: Figures 1 and 2 illustrate in side and end elevation respectively one of the
simplest forms of key in its operative position.
Figures 3 and 4 represent a more complex form of key in its operative and
inoperative positions respectively.
As will be seen on reference to the drawings, the key consists essentially of two
or more parts, a', a hinged or pivoted together at 6. Additional links a, a, can
be hinged on to the key as required and said links can have any profile to corre-
spond to a given lock. The key hole may be formed of any desired section so a ;
only to admit a correspondingly formed key and thus ensure the insertion of the
correct one. The locks or bolts are also preferably provided with a key-way in
which the last link of the key accurately fits.
In the simple form of key shown in Figures 1 and 2, the loose link a engage:
with the end of the bolt so as to operate same upon the least rotation being given
to the part a by its handle a².
In the more complex form illustrated by Figures 3 and 4 there is placed beneath
the inner end of the key hole a rounded or polygonal guide A. Unless the links of
the keys are exactly proportioned to the curve or angles of the piece A, the end
link cannot engage with the bolt or lock. Unauthorized opening of the lock is thus
absolutely prevented.
Having now particularly described and ascertained the nature of our said inver:-
tion and in what manner the same is to be performed, we declare that what we
claim is :
1. An improved key consisting of a handle and rigid portion and one or more
links suitably attached to said rigid portion, and which links can be of any length
or have any form, with straight or slotted or notched profiles or faces substantially
as and for the purpose set forth and shown in the drawings.
2. In an
improved key consisting of a handle and rigid portion and any number
of links required, the combination of said links with a curved or polygonal
guide piece A and the lock bolt substantially as described and shown in the
drawings.
27th day of August 1894.
J. E. EVANS-JACKSON & Co.,
Agents for the Applicants.