Improvements in Locks for Bicycles.
Year: 1897

page_text: Date of Application, 27th May, 1897-Accepted, 14th Aug., 1897
Improvements in Locks for Bicycles.
I, OTTO ZINK, of 376 King Street West, in the City of Toronto, in the County of
York, in the Province of Ontario, Canada, Chef, 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 :-
.
My invention relates to improvements in Automatic Locks for Bicycles and the object
of the invention is to provide a simple lock whereby when the standard of the front wheel
is turned with the wheel crosswise of the machine such standard will be automatically
locked in position and consequently the wheel prevented from being ridden and it
consists essentially of a simply formed metal band, which passes around the sleeve of
the standard and lower reach at the point of juncture, a spring arm being provided
within the case formed by the band, which is provided with pins at the front end,
which are thrown by the force of the arm into corresponding holes in the turning
tubular stem when such stem is turned around and the wheel turned crosswise of the
machine, such arm being provided with suitable wards through which the wards of the
key pass, so that such key may be thrown against the rear portion of the arm to
withdraw the pins from the tubular turning stem and thereby unlock the standard,
the parts being otherwise constructed and arranged in detail as hereinafter more
particularly explained.
Fig. 1, is a perspective view of the front portion of a bicycle showing the form of
the case of my lock.
Fig. 2, is a sectional perspective view through portion of the standard, the tubular
turning stem and lock.
Fig. 3, is an enlarged detail of the band forming the lock case.
In the drawings like letters of reference indicate corresponding parts in each
figure.
A is the band, which is formed with a front portion A¹ made so as to encompass the
sleeve B at the upper end of the forks C. The band A is made of spring metal and
has rearwardly extending quadrantal shaped portions a a¹ provided with inwardly
extending flanges a² and a³ respectively, which are designed to abutt each other when
the band is brought together. A2 and A3 are semi-cylindrical extensions forming part
of the quadrantal portions a and a' and A4 is a metal strap forming part of the
cylindrical extension A² and A' is a lug forming portion of the semi-cylindrical
extension A³. The band is put on by springing the quadrantal portions a and al
sufficiently far apart so as to pass the sleeve B, then the flanges a² and a³ are
brought together and the semi-cylindrical extensions fitted upon the reach D,
whereupon the metal strap is bent into the form shown in Fig. 3 so that its two holes
are opposite each other and opposite the hole A³ in the lock A³.
The screw is then passed through these holes which are threaded and each
end of the screw, cut off, so that no head is presented whereby such band may be
removed.
The supplemental screw 2 is also provided at the upper end which passes through
the quadrantal portions a and a³, such screw also having both ends made flush with
the outer surface of the quadrantal portions.

page_text: E is an arm secured on the end of the helical spring, which is secured on the pin e¹
extending from the quadrantal portion a. E¹ is a recess in the lower portion of the
arm E and E is a downwardly extending projection provided with suitable wards e².
F is the key and G is the pin upon which the key fits. The pin G is attached to
or forms part of the quadrantal portion a. The key hole f is substantially horizontal
as shown. The key F is formed with wards, which are designed to pass the projections
between the wards e' of the projection E².
e are pins extending forwardly from the front end of the arm E. These pins
normally extend through holes 3 in the sleeve B and are spring-held against the
tubular turning stem or standard H when the wheel is in the position shown in
the drawing or during the ordinary position it assumes when being turned. When the
wheel, however, is turned around at right angles after dismounting the pins e³ are
automatically forced by the spring arm into the holes h in the tubular stem or
standard H, thereby locking the bicycle and preventing it being ridden.
In order to unlock the bicycle it will be seen that a special key is necessary, which
key must have wards, which will pass the projections between the wards e of the
projections . The key thus formed may be thrown from the horizontal position in
which it is shown in the drawing where the only part of the key appears upwardly and
rearwardly against an arm at the back of the recess e¹, thereby forcing the arm
rearwardly and the pins e³ out of the holes h of the tubular stem H, thus serving to
release the standard and render the bicycle ready for use.
It will be seen from the construction of the band that it may be readily and
cheaply stamped out of one piece and when held together by the headless screws it will
be impossible to tamper with the lock.
In order to cover the key hole I provide an anchor-shaped plate 5 upon the lower
portion of which the initial of the owner may be readily engraved.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, I declare that what I
claim is :-
1. In an automatic bicycle lock, in combination, a suitable case encompassing the
sleeve of the front standard and the lower reach at their point of juncture, an arm
pivotally swung on a spring and provided with forwardly extending pins, which
normally extend through the sleeve, holes in the tubular turning standard and means
for throwing the arm rearwardly against the tension of the spring as and for the
purpose specified.
2. In an automatic bicycle lock, in combination a suitable case encompassing the
sleeve of the front standard and the lower at their point of juncture, the arm E
having forwardly extending pins, the spring e to which the arın is secured the holes
in the tubular turning stem, the recess e¹ in the arm, the projection e² with wards and
a key provided with suitable wards designed to be inserted on a pin secured to the
band as and for the purpose specified.
3. In a bicycle lock, the band A consisting of the front portion A¹, the quadrantal
portion a and a¹ provided with flanges a² and a³, the semi-cylindrical extensions A³
and A³, metal strap A', lug A5 and headless screws securing the band in position as
and for the purpose specified.
13
1001
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.