Spring Bolt with Snaplock for Stopping the Movement of Cycles.
Year: 1897

page_text: Date of Application, 3rd Sept., 1897-Accepted, 26th Mar., 1898
COMPLETE SPECIFICATION.
Spring Bolt with Snaplock for Stopping the Movement of Cycles.
I, OTTO SPANNAGEL, Merchant, of Bonn on the Rhine, in the Province of Rhine-
land and Kingdom of Prussia, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
Sheet 1 of the accompanying drawings represents in Fig. 1 a side view of a cycle
provided with the invention, in Fig. 2 the other view of the rod of the cycle frame
supplied with the invention.
In Figs. 3 and 4 the invention is illustrated in its separate parts in side and
back view on an enlarged scale, while Fig. 5 shows a variation in side view that is,
longitudinal section, and ground plan, that is, horizontal section.
Sheet 2 shows in Figs. 6 and 7 a further variation in side and back view, and in
Fig. 8 an other performance of the latter.
A spring bolt A fastened to one of the rods of the cycle frame-the saddle
rod a would be the best, (as in Figs. 6 and 7) or should this be spread out, (as in
Figs. 3 and 4), then to one of the supports of the saddle rod and running in
guides b is connected in such a manner with a snaplock B that by a simple pressure
on the button c it is moved and then held fast in its end position by the snaplock,
the latter catching into a notch on the bolt A until it is opened by a key.
This bolt A bears on its lower end a wedge-shaped piece D which, (as shown in
Figs. 3 and 4), catches into another wedge E in a second bolt G enclosed in a case
and by the pressure of a spring F always pressed backwards.
The bolt G is placed in the neighbourhood of the bearings of the pedal-crank,
either parallel with it, so that its point is driven by the pushing of the bolt A
between the spokes of the chain-wheel and thus holding the latter fast, or athwart
the crank-axle in such a way that its point which is furnished with a correspond-
ingly shaped piece H (Fig. 5) works upon the pneumatic I and instantly acts as a
brake.
In the construction, according to Figs. 6 and 7, the wedge E on the bolt G is
omitted and the back end of the latter is forked at K, whilst the wedge D of the
bolt A catches between the both halfs of the fork and is strongly carried on and
connected with it by means of the slit e and the pin d.
In the performance, according to Fig. 8, the rod A is spared, the snaplock B is
joined directly with the box enclosing the bolt G, and this latter carries on the back
end a traverse L, from which projects above the hook M, which is to be clinched
by the spring C of the snaplock B. A knob N serves as handle for the purpose
to remove G with L and M sideways in the direction of the arrow.
Upon opening the snaplock with the key, the spring power drives both bolts
back again into their original position.
Should the spokes of the chain wheel be very far apart, it would be desirable,
instead of one bolt G, to have two next each other which pass simultaneously into
the space between two spokes so that the wheel is prevented from moving back-
wards or forwards thus avoiding a possible violent blow on the chain.

page_text: In place of the wedges D and E toothed segments, levers, or pulleys may of
course be employed, but wedges are certainly the most simple.
This contrivance for stopping the action of cycles has this advantage over others,
for example, locks, chains and similar devices, that the rider stops the machine
by a simple touch and the way to set it going again is simple convenient and
reliable.
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:-.
Contrivance for stopping the movement of cycles employing the well known
spring-bolt, acting as a hold-fast-bolt or as a break, thereby characterized that the
lock containing the snapspring C is attached above at the saddle rod or at one of
the rods a whereby a rod A. guided on the rod supporting the lock, is arranged
in such a manner, that the upper end of it which is provided with a knob c, passes
through the casing B of the lock and comes out of it above, while the under end of
the rod A is connected by means of a wedge D or respective other elements, for
instance toothed segments, levers and the like, to the corresponding back-end of
the spring-bolt G in such a manner that the rod A moving upwards shoves away
the bolt G in a horizontal direction and that conversely the latter moving back-
wards causes the upward movement of the rod A.
Dated this 2nd day of September 1897.
For OTTO SPANNAGEL,
Bernh. Brockhues.