Improvements in Permutation Locks.
Year: 1898

page_text: Date of Application, 18th June, 1898-Accepted, 30th July, 1898
COMPLETE SPECIFICATION.
Improvements in Permutation Locks.
I, HUBERT STAMMEL, of Freiheitstrasse, 31, Cologne-Deutz, in the Empire of
Germany, Dentist, 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 a new or improved safety lock.
Referring to the annexed drawing, Fig. 1 is a side view, Fig. 2 is a longi-
tudinal section, Fig. 3 is a cross-section; Fig. 4 is a plan view and Fig. 5 is a
front view of the socket enclosing the lock. Figs. 6 and 7 show a front and
side view of the disks used in this lock.
On a disk a serving for fastening the lock on the object to be secured and
provided with two projections, there is fixed by means of a screw, a casing b
in which there are the disks, c, c¹, 2 provided with sockets, and the rings d, d², d².
The sockets of the disks lie in one another and serve for holding the disks in
their position and also for guiding the pin or shaft s.
C
On the sides opposite the sockets there are set off the disks and c etc. respec-
tively and the annular intermediary rings d, d, d are here seated.
These rings d, d', d have on their exterior peripheries a suitable number of
letters, numbers or the like and between the same notches e, in order to facilitate
the turning and fixing of the rings. Whilst each ring has under each letter,
number or the like an opening », each disk c, c, carries only one pin which
engages into one of the openings of the ring d belonging thereto and thus
determines the position of the same to the corresponding disk.
Each disk c, c etc. with the socket has under its pin ia groove n, through which
the pin or shaft s used with this device can be guided with its nose or projec-
tions; in the same manner the disk a and also the closing plate of the socket b
receives for this nose s¹ a recess 63. The pin or shaft s is provided with a button
or the like serving as a handle.
The casing benclosing the disks together with the rings, carries over each
ring d a stopping pin b which standing under the effect of a spring is provided
at the top with a small button 2 serving for seizing it. These pins b' with
the springs are enclosed by a casing (Figs. 1, 3 and 5). Laterally this casing
has hollows or cut out portions through which the disks d are visible and can
be turned. It is only possible to push the stopping pin s in or out when the
grooves are lying over one another respectively in a prolongation, in the sockets
lying in one another.
As the grooves of each socket lie under the pin i, but the latter lies in one of
the openings o of the ring d belonging thereto, the position of the groove is
recognisable from the outside by the number, letter etc. over this opening, so that
when there are provided 3 disks and 3 rings, the 3 grooves are brought into a
straight line by placing the 3 numbers lying over the pins in line with one
another. As further, each of these numbers can be exchanged in any desired
manner, it is only possible to push the stopping pin in or out when the number

page_text: or combination of numbers is known whereby any misuse by unauthorized persons
is prevented.
Instead of 3 disks there can also be used 2 or more. The number of rings
corresponds to the number of the disks.
Whilst in the drawing the device is represented for use with cycles the same
can also be used for other purposes whereby then according to the use for which
it is required the rod or shaft s must be used as a bow or the like.
(b,
The manner of operation is simple; -The device is arranged by means of the
disk for instance on a leg of the front fork of a cycle, in such a manner that
the pins after being put through is laid in eyes arranged on the fellies of the
wheels of the cycle and thus holds the said wheels.
After the casing b has been taken off, the pins i are brought into openings
lying under the desired numbers and thus a triple number is ascertained, in
which the grooves in the sockets lie behind one another and the pin can be put
through. After having put the casing b on the rings are displaced in any desired
manner. When the wheel is to be secured, the rings d are turned in such a
manner that the determined number is visible, then the pin is pushed through
the socket, rings and disks into one of the eyes arranged on the wheel felly and
then one or more rings are displaced with the disks. The pin is then fixed and
the wheel is secured. In order to be able to take the pin out, one must again
adjust the rings until the predetermined or known number is arrived at.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
An improved safety lock in which two or more disks lie one within the other
in a suitable casing, each disk carrying a ring which has recesses in it capable
of appearing under signs arranged on the ring in which recesses a pin of the
disk belonging thereto is placeable whereby grooves provided under the pins of
the disks are adjustable from the outside thus rendering it possible to push the
locking pin in or out to lock or unlock the device to be secured substantially as
described and illustrated and for the purpose set forth.
י
11
1011
1
A T
1000
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, London, W.C.