New or Improved Means for Locking Bicycles, Tricycles, and other Velocipedes.
Year: 1897

page_text: Date of Application, 24th Sept., 1897
Complete Specification Left, 22nd June, 1898-Accepted, 6th Aug., 1898
PROVISIONAL SPECIFICATION.
New or Improved Means for Locking Bicycles, Tricycles, and other
Velocipedes.
We, MATTHEW HARVEY & COMPANY LIMITED, of Glebeland Works, Walsall,
in the County of Stafford, Cycle Manufacturers, and HAROLD CUBLEY, of Bath
Street, Walsall, aforesaid, Cycle Fitter, do hereby declare the nature of this
invention to be as follows:-
This invention consists of the herein described new or improved means for
locking bicycles tricycles and other velocipedes so as to prevent the cranks and
driving mechanism and back wheel from turning and thus prevent the bicycle
We will describe
or other velocipede from being surreptitiously moved or stolen.
this invention as applied to a safety bicycle of the kind in which the power and
rotary motion are transmitted from the crank axle to the driving wheel by an
endless chain and sprocket wheels.
We provide a lock which is applied to the bottom fork or compression stays
of the safety bicycle and is arranged as follows:-We provide a suitable lock
casing which is so constructed as to form the head or cross bar of the bottom fork
where the same is brazed to the bottom bracket. Within this lock casing we pro-
vide a locking bolt one end of which can by a key be caused to project through
a hole in one end of the lock casing and engage between the teeth or with the
The bolt
arms of the sprocket wheel so as to prevent the same from turning.
is so arranged with the internal mechanism of the lock that when the bolt has
by the key been moved forward as aforesaid the bolt is locked in this position
and can only be withdrawn by the insertion of the proper key in the lock case.
The internal mechanism of the lock may be constructed and arranged in
various ways. For instance the interior of the lock casing may be made of a
barrel form and the bolt be made in two parts one of which, that is the part
which engages with the teeth of the sprocket wheel, we call the sliding cam
part as it will only slide to and fro, and the other part which we call the turning
part is arranged to be turned by inserting and turning the key the said
two parts being fitted together and made with inclined surfaces or partial screw
threads so that when the part with which the key engages is turned by the key
through a certain angle, the inclined surfaces will cause the fore end of the
sliding part to project and engage with the teeth of the sprocket wheel as afore-
said. The bolt will be locked in this position by the inclined surfaces termina-
ting in flat parts which are now in contact with each other and are so held by
a coiled wire or other spring arranged round the sliding part of the bolt within
the lock casing to bear against a collar on the lock casing and against another
collar on the bolt. To unlock the lock the key has to be inserted and turned
slightly so as to turn the turning part of the bolt so that the re-action of the
coiled wire spring will force the sliding part of the bolt inwardly and withdraw
the same from the sprocket wheel.
The end of the lock casing where the key enters is or may be made with a

page_text: removable cap fitted with wards or otherwise arranged so as to prevent the lock
being operated except by a key of the proper shape.
Instead of the locking bolt being arranged as above described the said locking.
bolt may be merely screwed into the casing the head of the bolt being hidden
therein by the cap which is made with the wards or a key hole of a peculiar shape 5
to admit of the proper key to turn the bolt outwardly to engage with the teeth
of the sprocket wheel or to screw the same inwardly to allow the sprocket wheel
to turn. The said lock case is by preference made with two spigot ends to braze
into the short tubes which connect the lock casing to the bottom bracket and also
with two spigot ends to braze into the D or other tubes forming the bottom fork 1
and thus the lock casing takes the place of the usual cross piece which is used
in the formation of some kinds of bottom forks.
Dated this 22nd day of Santambon 1907
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.
New or Improved Means for Locking Bicycles, Tricycles, and other
Velocipedes.
We, MATTHEW HARVEY & COMPANY LIMITED, of Glebeland Works, Walsall,
in the County of Stafford, Cycle Manufacturers, and HAROLD CUBLEY, of Bath
Street, Walsall, aforesaid, Cycle Fitter, 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 consists of the herein described new or improved means for
locking bicycles tricycles and other velocipedes so as to prevent the cranks and
driving mechanism and back wheel from turning and thus prevent the bicycle
or other velocipede from being surreptitiously moved or stolen. We will describe
this invention as applied to a safety bicycle of the kind in which the power and
rotary motion are transmitted from the crank axle to the driving wheel by an
endless chain and sprocket wheels.
We provide a lock which is applied to and combined with the bottom fork or
compression stays of a safety bicycle or other velocipede and is arranged as we
will describe by referring to the accompanying drawing on which Fig. 1 is a plan
of a bicycle, bottom bracket and compression stays crank axle cranks pedals and
sprocket wheel of a safety bicycle with our improved lock applied thereto; Fig. 2
is a sectional plan of the lock part drawn full size, the parts being in the positions
which they occupy when the lock is unlocked; Fig. 3 shews the same parts as
Fig. 2 in the positions which they occupy when the lock is locked; Fig. 4 is a
front view of the lock; Figs. 5 and 6 shew parts of the same separately and Fig. 7
is a separate view of the key.
The same letters of reference indicate the same parts in all the figures of the
drawing.
In carrying out this invention we provide a lock casing which is so constructed
as to form the head or cross bar of the bottom fork where the same. is brazed to
the bottom bracket B the lock case having two spigot ends al a² to braze into
the two short tubes 162 which connect the lock casing A to the bottom bracket B
and also made with two spigot ends a³ a to braze into the C-section or other
bottom tubes or compression stays C¹ C³ forming the bottom fork. Thus the
lock casing A takes the place of the usual cross piece which is used in the forma-

page_text: tion of some cycle bottom forks. The lock casing A is made of a circular barrel
form inside and is provided with a bolt made in two parts marked respectively
D and E. The part D is made with a reduced spindle part d' which projects
through the lock casing at one end so as to engage with the teeth of the sprocket
wheel F. This part D which we call the sliding cam part, as it will only slide
to and fro, is shewn separately by Fig. 5. The other part E of the bolt, shewn
separately by Fig. 6, and which we call the turning part is arranged to be turned
by inserting and turning the key such as G which is made with a peg g¹ to engage
in a hole k in the turning part E. This part is made with a spigot part el
which takes into a central axial hole in the part D. The part D is prevented
from turning by the leg hin the casing A engaging with the longitudinal
slot d of the part D. The end of the part D is made with inclined surfaces d³ d'
or partial screw threads which take against corresponding inclined parts e² e
formed on the end of the part E so that when the part E is turned by the key G
through a certain angle the inclined surfaces will cause the sliding part D to
move forward as shewn in Fig. 3 so that its fore end will project and engage
with the teeth of the sprocket wheel F and thus lock the same and prevent it
from turning. The spiral spring i contained in the casing A acts between the
end of the same and the shoulder d of the sliding part D and tends to force the
sliding part 1 towards the part E and thus to keep the inclined surfaces in
contact.
When the bolt has been caused to project as above described and as shewn
in Fig. 3 it will be locked in this position as the inclined surfaces d³ ³ e² e³ ter-
minate in flat parts de³ which as shewn in Fig. 3 are now in contact with each
other.
To unlock the lock the key G has to be inserted and turned slightly in the direc-
tion to turn the turning part E of the bolt so that the reaction of the coiled
spring will force the sliding part D of the bolt inwardly and withdraw. the
end of the same from the sprocket wheel.
The parts D and E are secured in the barrel A by the bush or cover Ț which
is screwed into the end of the barrel and is made with the key hole ; which may
be provided with wards for the key.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
1. A cycle lock of which the casing forms the cross bar of the bottom fork or
compression stays and is provided with a sliding locking bolt and a turning part
both made with inclines or partial screw threads arranged to act together so that
when the turning part is turned by the key in one direction the bolt slides for-
wards and engages with the sprocket wheel and when the turning part is turned
in the opposite direction the bolt is forced back into the lock casing by an
internal spring, substantially as hereinbefore set forth.
2. The improved cycle lock forming the cross bar of the bottom fork or com-
pression stays and constructed and arranged and operating substantially as
hereinbefore described and illustrated by the accompanying drawings.
Dated this 20th day of June 1898.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.