An Improvement in or relating to Locks.
Year: 1897

page_text: Date of Application, 11th Jan., 1897-Accepted, 13th Feb., 1897
COMPLETE SPECIFICATION.
An Improvement in or relating to Locks.
I, EUGEN FOCHTENBERGER, of C.8.8., Mannheim, in the German Empire,
Merchant, do hereby declare the nature of this invention and in what manner the
same is to be perforined, to be particularly described and ascertained in and by the
following statement :-
The present invention consists of an improvement in or relating to locks,
which, although preferably applied to cycles may be made use of for other
purposes.
According to this improvement the tumblers which release the bolt are not
actuated by the turning of a key-as in the case of the existing Chubb locks-
but by the simple insertion of a special releasing plate, hereinafter called a plate-
key, any suitable number of tumblers being so arranged in position as to allow the
freeing of the bolt, catch or the like.
On the accompanying sheet of drawings two forms of such an improved lock
are represented by way of example.
Figure 1 shows a front view of the staple carrying the tumblers.
Figure 2 is the top view of Figure 1.
Figure 3 represents the corresponding lock case in front view.
Figure 4 is the top view of Figure 3, and
Figure 5 shows the plate key belonging thereto.
Figure 6 is a modification of the lock shown in Figures 1 to 5.
This lock consists essentially of a bolt-staple or catch a which contains the
pins b, the latter serving as tumblers. By means of the springs c the said pins b
are caused to outwardly project through the wall a¹ of the bolt-staple a.
b
These
pins 6 are provided at their top with inclined surfaces b' in order to facilitate the
entrance of the pins into the lock-casing.
This casing d is divided by means of the partitions d' and d² into three com-
whilst
partments e ele, of which e³ serves for the reception of the bolt-staple a,
the two other compartments e and e' only contribute to increase the safety of the
whole appliance.
At its front, the said casing d is left open, in order to allow of the insertion of
the bolt-staple a. The slot d formed in the top d³ of the case as well as in
the partition d' are intended for guiding the plate key f (Figure 5) while the
partition provided with holes d³ takes the place of the usual staple-plate
in locks,
In the modification represented in Figure 6, the casing d is made bow shaped,
and at both of its ends is provided with sockets, whilst the bolt-staple a, being
likewise constructed as a bow, is provided with tumbler-pins 5. As soon as the
staple a is inserted into the sockets of the bow d, both together constitute a look,
which can only be opened by inserting the keyf corresponding to this lock.
Either of the herein described locks is closed or locked by simply pressing the
bolt-staple a into the compartment whereupon the pins 6 under the action of
springs c are forced to enter the holes d³ of the partition d2 and thus to effect an
intimate connection between staple a and casing d. This connection can only be
loosened, by pressing the key f upon the tumblers or pins b.

page_text: 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 improvement in or relating to locks, consisting of a bolt-staple a, carrying
tumbler-pins b, the said bolt-staple a being released from the lock-casing d, by
depressing the pins b by means of a key such as f, and thus opening the lock,
-substantially as described.
day of January 1697.
STANLEY POPPLEWELL & Co.,
7 & 8, Southampton Buildings, Chancery Lane, London,
Chartered Patent Agents.