IMPROVEMENT IN OR APPLICABLE TO BICYCLE-BRAKES
Year: 1885

page_text: I, HERBERT JOHN HADDAN, of 67, Strand, in the City of Westminster, Civil
Engineer, do hereby declare the nature of said invention for IMPROVEMENT IN OR
APPLICABLE TO BICYCLE-BRAKES, a communication to me from abroad by Karl
Marschütz, merchant, of Nürnberg, in the German Empire, to be as follows:-
This invention has for its object to prevent the use of bicycles by unauthorized
persons.
For this purpose I apply to the brake a locking device adapted to keep the brake
in contact so as to prevent the turning of the wheel until the locking device is
disengaged.
This locking device is preferably interposed between the upright arm of the
brake-lever and the post or upper part of the frame which carries the balance rod.
It comprises a double casing fixed to the trame and containing a short lever,
excentric, or cam having its pivotal axis parallel to the fulcrum of the brake-lever,
so that by turning the said locking lever or cam the latter may be pressed against
the brake lever and keep the same in contact with the wheel. In order to release
the bicycle-brake, it is necessary to first turn back the locking lever, which can
only be effected by means of a special key (similar to the key of a railway carriage
door) which fits over the triangular end of the pivot of the locking lever, or which
is otherwise adapted to the specially shaped pivot end, so as to turn the same.
The locking lever or cam projects over the double casing in which it is pivoted,
and the front of the outer casing may have a central opening large enough to allow
of the key being introduced into the casing.
The inner casing serves as a guide for the lever and a bearing for its axle, while
the outer casing serves to mask the ends of the pivot.

page_text: I, HERBERT JOHN HADDAN of 67 Strand, in the city of Westminster, Civil
Engineer, do hereby declare the nature of this invention, a communication to me
from abroad by Karl Marschütz, Merchant, of Nürnberg, in the German Empire,
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention has for its object to prevent the use of bicycles by unauthorised
persons.
For this purpose I apply to the brake a locking device, adapted to keep the brake
in contact so as to prevent the turning of the wheel until the locking device is
disengaged.
The annexed drawing shows the locking device applied to a bicycle with double
lever brake. Behind the vertical part a¹ of the brake lever a double casing c¹ and c².
is secured to the head piece b (Fig. 1) and in this casing is a small lever d with an
axle e.
The part 2 of the casing is provided at the side with an opening g
(Fig. 2) and the visible part c¹ of the axle is angular-shaped, so that the corre-
spondingly hollowed key h (Fig. 3) can be put on the axle, and by means of the
key the lever d can be reversed (as in Fig. 4.)
When the bicycle is used, the lever & occupies the position shown in Figs. 1 and 2,
so that it in no manner hinders the usual application of the brake. For the
purpose of locking the bicycle, the lever d is simply reversed by the key h (as in
Fig. 4), thereby the spoon a² of the brake lever is pressed on the wheel i and
secured automatically in this position.
Fig. 5. is a section of Fig. 4 on a slightly enlarged scale.
Having now particularly described and ascertained the nature of said Inven-
tion, and in what manner the same is to be performed, I declare that what
I claim is
The bicycle locking device, consisting of the double casing c¹ and c², provided
with the opening g, and the lever d, lodged in the same and adapted to be turned,
and this lever reversed by the key h securing the break so as to cause the same
to act continuously on the fore wheel and to render it unfit for running, substantially
as illustrated and described.