A New or Improved Alarm or Safety Device for Preventing Unauthorized Use or Interference with Cycles.
Year: 1898

page_text: Date of Application, 21st Feb., 1898-Accepted, 16th Apr., 1898
A New or Improved Alarm or Safety Device for Preventing
Unauthorized Use or Interference with Cycles.
I, JOSEF HERRMANN, of Singen on/H (Baden), in the Empire of Germany, 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 an alarm or safety device for cycles for preventing their
being stolen or used or interfered with by unauthorized persons, or for similar
purposes.
The safety alarm device according to the present invention consists mainly of a
pistol or detonator device adapted to be attached to a cycle or any construction, so
as to be easily thrown into or out of action, said device when "set" firing a
detonator or shot as soon as the cycle is moved, thereby drawing the attention of
the owner, even if he be at some distance from the machine.
When the device is thrown out of action, the cycle can be freely used without
affecting the detonator device.
In the accompanying drawing the device is shown in
Fig. 1 in elevation and in
Fig. 2 in an underside view.
Fig. 3 shows a perspective view of the device attached to a cycle.
The arrangement is as follows:-
The pistol or holder 1 loaded with a detonating cartridge or cap, is mounted on
an angle piece or bracket 2, the bent or claw shaped side 3 of which projects
upwards and carries a screw-rod 4.
This screw rod engages with a projecting part 5 adjustable on the bracket 2.
The parts
and 5 are arranged between the chain stays 6 and 7 and are pressed
fast against said stays by turning the screw-rod 4, so that the detonator device 1 is
secured fast to the cycle.
At the outer end of the bracket 2 there is a bearing bracket or projection 8
supporting a hammer 10 controlled by a spring-blade 9. The hammer 10 has on
its end a pin or finger 11 with which is adapted to engage a pin 12 on a lever 13
pivotted on the bracket 8.
о
This lever 13 is controlled by a bent portion 14 of the spring blade 9, and when
"set" has its free end between the spokes of the driving chain wheel 15, but when
not in use it can be easily turned inwards as indicated by dotted lines Fig. 1.
If the cycle is moved by an unauthorized person, the lever 13 being between the
spokes of the chain wheel 15 will be struck by the spoke of the wheel 15, its pin 12
will act on the finger or end of the hammer 10 and raise the latter and cause it,
after the spoke has released the lever 13, to strike against the priming pin or the
cartridge, under the influence of the spring-blade 9.
The cartridge is preferably placed in the detonator device 1 from the back, the
thumb-nut bolt 16 being first slightly turned and then withdrawn, as in similar
bayoneted joints.

page_text: The bolt 16 has on its inner end a spring cap 17 for receiving the recoil after the
explosion. The pin 18 of the bolt 16 is mounted by means of a bayonet joint in
slots 19 and 20 of the barrel 1, the slot 20 being also used for introducing the
priming pin for the cartridge.
It is obvious that instead of the lever 13 being operated by the spokes of the 5
chain wheel it may be arranged to be operated by the teeth of said wheel.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. A safety device or alarm for preventing unauthorized use or interference 1
with cycles, comprising a detonator device operated by a hammer which can be
easily thrown in and out of gear-said hammer being operated by a spring
controlled lever 13 adapted to be placed so as to be operated by the movement of
the driving chain wheel, substantially as described.
2. The combination and arrangement of parts constituting the complete safety 1
device or alarm for cycles, substantially as described and illustrated in the
accompanying drawings.
1000