Improvements relating to the Alarm Bells of Gongs of Velocipedes.
Year: 1893

page_text: Date of Application, 29th June, 1893-Accepted, 29th July, 1893
COMT DIE DI BUITIATION.
Improvements relating to the Alarm Bells of Gongs of
Velocipedes.
I JOHANN BAUM, Locksmith, of Solingen, in the German Empire, 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 double gong which is set in operation by causing a
friction ring or disc to come into contact with the circumference of a cycle-wheel.
In the accompanying drawings:
Fig. 1 is a side elevation showing the front or steering wheel of a velocipede
together with an alarm apparatus embodying my invention;
Fig. 2 is a side view of the gongs and attachment on a larger scale;
Fig. 3 is a plan corresponding to Fig. 2;
Figs. 4 and 6 are enlarged side views showing the mechanism enclosed by
the gongs;
Fig. 5 is an axial section corresponding to Fig. 4.
The principal feature of the new apparatus is a friction ring or disc situated
between the two gongs and coaxial with the same.
*
The hub n of the friction disc is mounted on the axle a, which passes through
the gongs and is held at its extremities by a pair of forkarms 6, b.
This disc carries a pair of hammers or strikers h actuated by springs c.
When the friction disc r is pressed upon the circumference of a cycle wheel and
thereby caused to revolve on its axle a, the rear arms d of the said strikers come
into contact with a cam & fixed on the stationary axle a, and are set in motion by
the same alternately. The two bells have preferably a different pitch, so that the
alarm apparatus emits alternately two different sounds.
In order to act on the opposite bell, one of the two hammer bars is arranged and
curved in such a manner, that it passes through an opening of the disc r to the
opposite side of the same, as shown by Figs. 4 and 5.
A spring e coiled on the axle a serves to press the friction disc against the
cam k, and thus to prevent the contact of the disc with the edges of the two bells.
The arms holding the axle of the bells are mounted on a pivot, as shown by
Figs. 2 and 3, and held in their normal position (out of action) by a spring f coiled
on the said pivot.
For pressing the friction disc upon the wheel, a lever g is attached to one of
the arms band connected with a string, leading to the balance rod, within easy reach
of the hand. Instead of a string, a lever or other suitable device, may however, be
employed for depressing the disc r.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. A cycle alarm comprising in its construction a pair of bells, a friction disc (r)
mounted between the same and carrying a pair of strikers (h), a cam (k) fixed to
the axle of the bells and adapted to act on the rear arms of the strikers alternately
at every revolution of the wheel, and mechanism for pressing the said friction
disc against the cycle wheel, and to lift it off, when required, substantially as
described.

page_text: 2. A cycle alarm constructed and adapted to operate substantially as described
with reference to the drawings.
Dated this 20th day of June 1802
J. BAUM,
By Fairfax & Wetter,
433, Strand, London, Agents.