Improvements in Locking Apparatus for Velocipedes.
Year: 1896

page_text: Date of Application, 3rd Jan., 1896
Complete Specification Left, 26th June, 1896-Accepted, 1st Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in Locking Apparatus for Velocipedes.
I, WALLACE FAIRWEATHER, C.E., of 62 Saint Vincent Street, in the City of
Glasgow, Chartered Patent Agent, do hereby declare the nature of this invention,
(as communicated to me by Georgiana Remsen Hillhouse of New York, County
and State of New York, United States of America,) to be as follows:-
This invention relates to improvements in locks for velocipedes designed to
prevent the use of the machines by unauthorized persons, and said invention
especially relates to locks that are incorporated in the frame of the machine, in lieu
of using separate locks that have to be carried in the pocket of the rider.
The object of the invention is to so locate the lock that it's bolt may engage
with a strong part in the movable mechanism of the velocipede, avoiding engage-
ment with delicate parts, such as the wire spokes of the supporting wheels, which
are liable to become broken in the event of the rider inadvertently mounting and
attempting to start the velocipede while it is locked.
The object of the invention is also to render the lock compact and self contained
and inconspicuous in the construction of the trame.
The invention consists in the arrangement of a lock on the frame of the
velocipede whereby the bolt of the lock shall engage with or intercept a wheel of
the propelling mechanism mounted upon the pedal crank shaft, and also whereby
the lock case may compose a part or brace in the construction of the frame adjacent
to the crank shaft hanger.
The invention when applied to rear driven bicycles, is to be embodied in a lock
case forming the cross-brace between the pair of rear lower braces that extend
from the crank shaft hanger or bearing rearward at each side of the traction wheel
to the bearings thereof, and said lock case is situated immediately in front of the
rear or traction wheel, and sufficiently near the said crank shaft hanger to allow
the lock bolt which reciprocates longitudinally in said case cross-wise of the
machine, to engage within the circumference or path of the wheel of the propelling
mechanism on the crank shaft, which is usually a sprocket chain propelling wheel.
The bolt may be moved to and fro by the lock action so as to intercept the spokes
of the sprocket wheel or retract away from the same.
For the purpose of the invention, the type of lock known as a "cylinder" lock
is preferably used. The key-hole is at one end of the cross-brace and the bolt is
at the other end which is nearmost to the sprocket. wheel. The bolt is longitudinally
movable in line with the axis of the rotary cylinder, and in order to impart motion
from the cylinder to the bolt, the one part bears a shank which is provided with a
spiral thread, and the other part has a bore to receive the shank, which bore is
also spinally threaded internally, cr simply provided with an inwardly projecting
pin to engage the thread of the shank, and proper means are provided to guide the
bolt in it's longitudinal movement, and the cylinder in it's rotary movement, so that
the desired motions are accomplished. The cylinder may be given a complete
rotation so that the tumblers always lock and re-lock in the same openings when
the bolt is thrown out or thrown in. It is preferable to dispense with any bolt
actuating spring, and thereby eliminate danger of the bolt springing out and
damaging the wheel while the velocipede is in motion, and moreover the rider
should have his key to lock as well as to unlock the velocipede for the reason that

page_text: otherwise, as in spring locks as commonly used, the rider may inadvertently lock
the velocipede when he is not in possession of the key.
The mechanism of the lock may be constructed in other forms than herein
described, without departing from the scope of the invention.
Dated this 2nd day of January 1896.
CRUIKSHANK & FAIRWEATHER,
Chartered Patent Agents,
62 St. Vincent Street, Glasgow, Agents for the Applicant.
proveme
Locking Apparatus for velocipedes.
I, WALLACE FAIRWEATHER, C.E., of 62 Saint Vincent Street, in the City of
Glasgow, Chartered Patent Agent, do hereby declare the nature of this invention
and in what manner the same is to be performed, as communicated to me, to be
particularly described and ascertained in and by the following statement:-
This invention relates to improvements in locks for velocipeles, designed to
prevent the use of the machine by unauthorized persons, and said invention
especially relates to that class of locking devices which are permanently incorporated
in the frame of the machine.
Heretofore attempts have been made to support the lock case from a narrowly
confined point of support or upon a single member of the bicycle frame. Such
manner of support renders the attachment of the lock insecure, and particularly so
owing to the extremely light structure employed in modern frames, and in event of
the rider inadvertently mounting and attempting to start his wheel while the same
is locked, the leverage obtained by the lock case at its narrow point of support on
the frame when the moving part strikes the projecting bolt is so great that damage
to the frame and bending of the lock out of place results. By means of my
improved construction, the lock case is elongated in the length of the sliding part
or bolt and is arranged on such part of the frame as to obtain two points of attach-
ment guiding and supporting the bolt in such manner as to most effectually resist
the strains and avoid injury to the frame. By means of my invention I also obtain
a compact construction and neat external appearance of the lock.
The invention consists in certain novel features of construction and arrangement
of a lock upon a double brace of the frame adjacent to the crank ebaft banger so
that the elongated bolt guiding lock case is supported at two points in the line of
movement of the bolt, and the bolt thus firmly supported, may be shot into the path
of rotation of a strongly constructed wheel of the propelling mechanism, such as
the front sprocket wheel, mounted upon the pedal erauk shaft, and the lock case
incidently forms a strengthening cross-brace for the frame.
Referring to the accompanying drawing:
Figure 1, represents a perspective view of the crank shaft hanger and contiguous
parts of a rear driven bicycle, showing a portion of the rear lower brace which in
the present instance is the double membered brace to which the lock is applied;
Figure 2, is an enlarged vertical section taken on the line x-x, of Figure 3,
showing one suitable form of internal construction of the lock; and
Figure 3, is a cross-section of Figure 2 at y-y.
A, represents the crank shaft hanger; B, a wheel of the propelling mechanism
mounted on the pedal crank shaft C, which wheel in the present instance is a chain
propelling sprocket wheel. D is the rear lower brace of the frame, composed of
two members extending from the hanger A at different points 1, 2, in the length
of the banger, and E, is the lock case extending transversely and supported at two
points 3, and 4, in its length by said members, and F, is the movable lock bolt
guided in the length of said case to engage with and intercept the wheel B to lock

page_text: the machine. G is a throat formation of the case extending between and
permanently attached to said members of the brace D, forming a cross-brace.
H, is the key receiving cylinder for actuating and locking the bolt F, which
cylinder is rotative upon the axial line of said bolt at the end of the case E
opposite thereto. I, are pin tumblers used in the usual and well known construction
of cylinder locks, and the ducts 5 for the same are located in the throat G. The
alignment of the cylinder H, and bolt F, and the utilization of the cross-bracing
throat G as a tumbler case afford compact construction.
The cylinder H is capable of a complete rotation in a fixed circle, being rotated
by the key J, and guided by a pin 6 projecting from the case E into a circum-
ferential groove 7 in said cylinder, and when the cylinder H has performed a
complete rotation in the one direction or the other, the tumblers I re-engage with
the cylinder after the key has been withdrawn.
The bolt F, is guided longitudinally by means of a pin 8 projecting from the
case E into a rectilinear groove 9 in the bolt. The longitudinal motion of the bolt F
is produced by the rotary motion of the cylinder H, by means of the engagement
of the spiral groove 10 in the shank H' of the cylinder with the pin 11, projecting
internally from said bolt F, which is made hollow for the reception of said shank.
The full stroke of the bolt F is performed by a single complete revolution of the
cylinder H, and the tumblers I engage and re-engage with the cylinder so that
the holt may be locked in and locked out.
The scope of the invention is not to be understood as being limited to the herein-
described details of the internal mechanism of the lock, which is capable of various
modifications for carrying out the essential features claimed.
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:-
1. In a rear driven cycle, the combination with a frame having a crank shaft
hanger and a rear lower brace composed of two members extending rearward from
the hanger at opposite sides of the traction wheel, of a lock case extending
transversely and supported at two points in its length by said members, a longi-
tudinally movable lock bolt guided in the length of said case to engage beyond
and externally to said points of support with a wheel of the propelling mechanism
mounted on the crank shaft, and suitable means for actuating and locking said
bolt.
2. In a rear driven cycle, the combination with a frame having a crank shaft
hanger and a rear lower brace composed of two members extending rearward from
the hanger at opposite sides of the traction wheel, of a lock case extending
transversely and supported at two points in its length by said members, a throat
formation of the case extending between and permanently attached to said members,
a longitudinally movable lock bolt guided in the length of said case to engage
beyond and externally to said points of support with a wheel of the propelling
mechanism mounted on the crank shaft, and suitable meaus for actuating and
locking said bolt.
3. In a rear driven cycle, the combination with a frame having a crank shaft
hanger and a rear lower brace composed of two members extending rearward from
the hanger at opposite sides of the traction wheel, of a lock case extending
transversely and supported at two points in its length by said members, a longi-
tudinally movable lock bolt guided in the length of said case to engage beyond
and externally to said points of support with a wheel of the propelling mechanisin
mounted on the crank shaft, and a key cylinder for actuating and locking said bolt
rotative upon the axial line of said bolt at the end of the case opposite thereto.
4. In a rear driven cycle, the combination with a frame having a crank shaft
hanger and a rear lower brace composed of two members extending rearward from
the hanger at opposite sides of the traction wheel, of a lock case extending
transversely and supported at two points in its length by said members, a throat

page_text: formation of the case extending between said members, a longitudinally movable
lock bolt guided in the length of said case to engage beyond and externally to said
points of support with a wheel of the propelling mechanism mounted on the crank
shaft, and a key receiving cylinder for actuating and locking said bolt having pin
tumblers, and ducts for the pin tumblers located in said throat, and suitable means
for actuating and locking said bolt.
Dated this 25th day of June 1896.
WALLACE FAIRWEATHER.