An Improved Combined Spanner and Cycle Lock.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
An Improved Combined Spanner and Cycle Lock.
I, VALENTIN ROCKENMEYER, of 41 Grombühlstrasse, Wurzburg, in the Empire
of Germany, Merchant, do hereby declare the nature of this invention to be
as follows:-
This invention relates to a universal screw spanner of a' certain known kind,
in which the two shanks carrying the jaws of the spanner are adjustable one with
respect to the other, and according to the invention in the first place a lock is
provided for locking the adjusting device, and in the second place the said shanks
are formed of a bent or bowed shape in such a manner that the screw spanner
may be used as a hook or hanging safety lock. This tool is chiefly intended for
use with cycles, as, whilst serving as a spanner, which is indispensable to all
cyclists, it may also be used to guard against theft of the cycle.
One of the shanks carrying one of the jaws of the spanner is bent at its extremity
in such a manner as to form a hook and is formed or provided at or near its
middle portion with two lugs, through openings in which passes the other shank
which is here screw-threaded. Between these lugs is arranged a nut which
engages the screw-threaded portion, by the rotation of which nut the shank with
its jaw attached thereto is displaced, so that according to the directions in which
the nut is to rotate, the jaw or opening of the spanner is rendered larger or
smaller whilst at the same time the bent portion forming the safety lock is either
opened or closed.
A locking device, adapted to be operated by means of a key, is also provided,
by means of which the said nut may be fixed, thereby locking the shanks in
the respective positions which they may occupy at the time.
In a constructional form of this invention a screw may be arranged in a recess.
provided in one of the shanks for this purpose. The screw may be provided with
a slot of a special form so that only a particular key may be used for tightening
or slackening the screw, by which means security against any unauthorised
The
opening of the tool when employed as a safety lock is greatly increased.
ward of the key may be made of dovetail shape, while the slot in the screw
becomes deeper towards each side from the middle point of the head of the screw.
The tool may be modified in many ways. The hook (or eye) formed by the
two shanks may be of any desired shape; annular or elongated, for example.
Or the two shanks may be made to form a hook or an opening adapted to be closed
at any desired point. The essential point is that the hook, eye or the like so
formed may be adapted to be opened or closed by the relative displacement of the
two shanks of the tool.
The nut may be replaced by means of any other adjusting device fulfilling the
same purpose. The screw may either press directly against the adjusting devices
or by means of an intermediate part. The locking may also be effected in a
different manner and the device arranged in a different position. As regards
the locking device the essential point is that it should serve to lock both the

page_text: shanks and that it should be adapted to be opened only by means of a special key
and should therefore be incapable of being opened by unauthorised persons.
In using the spanner as a hook or hanging safety lock the shank forming the
hook is hung over the chain and chain-wheel of a cycle, the opening in the hook
then being closed by means of the adjusting device and finally the locking screw
is tightened by means of the key. Rotation of the chain-wheel is thus prevented
since the chain cannot pass off from it. The tool may also be arranged upon other
parts of the cycle for the purpose of securing it, in such a manner, for example,
as to lock the crank to the frame of the front wheel to the frame and so forth.
The device may also serve for securing the cycle to a ring or post.
Dated this 18th day of February. 1899.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.
I, VALENTIN ROCKENMEYER, of 41 Grombühlstrasse, Wurzburg, in the Empire
of Germany, Merchant, 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:-
This invention relates to a universal screw spanner of the kind, in which the
two shanks carrying the jaws of the spanner are adjustable with respect to each
other and the said invention consists in the first place in providing the said
spanner with a lock for locking the jaws in any position in which they are
adjusted, and in the second place in forming the said shanks of a bent or bowed
shape in such a manner that the screw spanner may be used as a hook or
hanging safety lock.
The improved tool is chiefly intended for use with cycles, as, whilst serving
as a spanner, which is indispensable to all cyclists, it may also be used to guard
against theft of the cycle.
In the accompanying drawing I have shown how my invention may be con-
veniently and advantageously carried into practice.
Figure 1 is a side elevation showing the improved spanner closed, the locking
device being shown in section.
Figure 2 and 3 show a side and front elevation, respectively of a spanner
partly open.
Figures 4 and 5 show the locking device or screw and the key for use with the
same and
Figure 6 shews the manner of using the spanner as a safety device upon the
chain wheel of a cycle.
C
In carrying the invention into practice the shank a carrying one of the jaws of
the spanner is bent at its extremity in such a manner as to form a hook b and is
formed or provided at or near its middle portion with two lugs c and d, through
openings in which passes the other shank g which is screw threaded. Between
these lugs is arranged a nut e which engages the screw-threaded portion f, by
the rotation of which nut the shank g with its jaw attached thereto is displaced,
so that according to the direction in which the nut e is rotated the jaw or opening
of the spanner is rendered larger or smaller whilst at the same time the bent
portion forming the safety lock is either opened or closed,

page_text: A locking device, adapted to be operated by means of a key, is also provided, by
means of which the said nut e may be fixed, thereby locking the shanks a and g in
the respective positions which they may occupy at the time.
In a constructional form represented in the drawing the screw may be arranged
in a recess provided in the shank a for this purpose. As shewn in Figures 4
and 5, the screw h may be provided with a slot of a special form so that only a
particular key may be used for tightening or slackening the screw h, by which
means security against any unauthorised opening of the tool when employed as a
safety lock is greatly increased. The ward of the key may be made of dovetail
shape, whilst the slot in the screw becomes deeper towards each side from the
middle point of the head of the screw.
The tool may be modified in many ways. The hook (or eye) formed by the
two shanks may be of any desired shape; annular or elongated, for example, Or
the two shanks a and g may be made to form a hook or an opening adapted to be
closed at any desired point. The essential point is that the hook, eye or the like
so formed may be adapted to be opened or closed by the relative displacement of
the two shanks of the tool.
The nut e may be replaced by means of any other adjusting device fulfilling
the same purpose. The screw h may either press directly against the adjusting
nute or by means of an intermediate part. The locking may also be effected in
a different manner and the device arranged in a different position. As regards
the locking device the essential point is that it shall serve to lock both the
shanks a and and that it shall be adapted to be opened by means of a special
key and should therefore be incapable of being opened by unauthorised persons.
In Figure 6 of the drawing, the method of using the safety lock is shewn, in
which the hook is hung over the chain and chain-wheel of a cycle, the opening
in the hook then being closed by means of the adjusting nut e and finally the
locking screw his tightened by means of the key k." Rotation of the chain-wheel
is thus prevented since the chain cannot pass off from it. The tool may also be
arranged upon other parts of the cycle for the purpose of securing it, in such a
manner, for example, as to lock the crank to the frame or the front wheel to the
frame, and so forth. The device may also serve for securing the cycle to a ring
or post.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what
J claim is
1. A combined spanner and cycle lock consisting of a spanner proper, the jaws
of which are made adjustable, means for securing the jaws of the spanner, in
any desired position relative to each other and a book or the like adapted to be
opened or closed by the movement of the said jaws substantially as described and
shown in the drawings.
2. An adjustable spanner having one of its shanks provided with a hook shaped
end, its other shank passing through lugs on the said first mentioned shank
and adapted to be raised or lowered by means of an adjusting nut for the purpose
of opening or closing the said hook, and a screw in one of the shanks adapted to be
engaged with the said adjusting nut by means of a key substantially as described
and shown in the drawing.