An Improved Looking Device for Velocipedes and the like Vehicles.
Year: 1896

page_text: Date of Application, 17th Nov.. 1896-Accepted, 27th Feb., 1897
COMPLETE SPECIFICATION.
An Improved Looking Device for Velocipedes and the like
Vehicles.
I, ERNST FRANZKE of 23 Kronenstrasse, Hannover, in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention and in what mannor the
same is to be performed, to be particnlarly described and ascertained in and by the
following statemont :-
It frequently happens that a velocipede must be left unguarded.
In order to prevent the theft of vehicles of this kind at such times, locking devices
of various descriptions have been dosigned and employed. Their practical use however,
is in most cases inconvenient, while they are often unreliable. Locking devices of the
kind herein specified are exclusively intended to prevent the operation of velocipedes
by thieves who ride or wheel them along the road for the purpose of abstracting
them.
A lock constructed according to this invention, siurple in construction and easily
handled is illustrated in the accompanying drawing, in which:
Figure 1 represents a side elevation of the lock showing its position when the
machine is being riddon,
Figure 2 a front elevation of the same in its locked position.
Figure 8 a plan of the lock in the position which it occupies when not in use, its
position when locked being illustrated in dotted lines.
Figure represents the locking book or catch separately.
The whole device is so arranged that the two cramp irons a embrace the right hand
arm of the front fork of the velocipede, the firm connection of these cramp irons being
effected by tightening the screws b. The free extremities of the cramp irons are made
strong and provided with holes which serve to guide the lock bar c. The upper end
of the hare is provided with a suitable handle d. That portion of the lock bar which
lies between the handle and the upper cramp iron is constructed so as to form the
locking bolt e, upon which the lock casing fis 30 held by means of tumblers g and a
tumbler spring that by turning the key the lock is moved up or down, whilst the
locking bolt remains stationary.
It is preferable that the stem of the lock should slightly project from the lock-casing
so that the cyclist may be enabled to easily and reliably actuate the lock oven in the
dark. A spiral spring may also be arranged around the stem of the lock, the top of
which carries a small perforated plate, arranged to press against the inner side of the lock
casing. By this means the key hole is kopt closed from the interior, so that no dirt
can enter the same. When the lock it in its open position, as is illustrated in
Figure 1, the lock stem c can be forced down by means of the handle d, during
which operation a projection i arranged on the locking bar or arm 7 participating in
the downward movement becomes disengaged from the recess k. It is thus rendered
possible to turn the lock bar or stem, the lock and the locking boit by means of the
handled through an angle of 90 degrees, whereupon the locking bar or arm
traversing a space between the spokes engages with the notch at the bottom of the
locking look or catch m which is fixed to the left arm of the front fork of the
velocipede by means of its cramp iron. On releasing the handled the locking arm
under the action of the spring o, engages the opening or notch of the hook m.
position is illustrated in Figure 2. Here the projection of the locking arm / has
This

page_text: engaged with the recess &¹ arranged in the upper cramp iron a. By turning the key
in the lock, the lock casing is then moved downwardly aud in the lower position
prevents the lock from being disengaged by means of pressure applied to the handle.
If the cyclist intends to leave his velocipede unguarded, he grasps the handle bar
of the machine with his left hand and the handle d with his right hand, forces the
latter downward and gradually turns it forward, during which operation, as has
already been stated, the locking arm I passes between the spokes of the wheel,
engages the hook or catch m and thus prevents the rotation of the wheels of the
vehicle. The construction of this improved locking device may be such that instead
of being fixed to the fork of the velocipede by means of cramp irons or brackets, it
may be brazed directly, or otherwise rigidly fixed to the fork.
An important feature of this apparatus further consists in the fact that the lock
with its accessory parts is kinematically roversed, and by sliding downward upon the
'stem thereby prevents the movements of the whole stopping or blocking device.
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 :-
In a device for locking velocipedes and the like vehicles by preventing the turning
of their wheels; a side bolt or bar which can be turned transversely between the
wheel spokes of a velocipede, the characteristic feature being that the said side bolt or
bar can only be brought into and out of the position of engagement with the spokes
by forcing down the stom c whereby the blocking portions (i) preventing a rotation
are separated; the said stem being so arranged that it may be fixed in placo by means
of a lock serving as a stop for preventing the displacement of the said stem, when the
lock is fastened upon the stem, as upon a bolt, at a point depending upon the
direction in which the lock is moved.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.O., Agents for the Applicant.