ats in Cycle-head Locks.
Year: 1899

page_text: Date of Application, 16th Nov., 1899
Complete Specification Left, 12th Sept., 1900-Accepted, 13th Oct., 1900
Improvement
ats in Cycle-head Locks.
We, CLARK BROTHERS, CYCLE COMPANY, LIMITED, of Essex Cycle Works, 24,
Dames Road, Forest Gate, in the County of Essex, Cycle Manufacturers, and
JAMES WILLIAM MOORE, of the same address, Foreman in the employ of the said
Company, do hereby declare the nature of this invention to be as follows:--
This invention relates to means for locking the front wheel of a bicycle,
tricycle or like machine, in any desired position; the steering-tube and front
fork carrying the wheel and handle-bar being free, when the lock is released,
to move rotatively without risk of any portion of the locking gear fouling any
part projecting from the fixed head of the machine.
In constructing and applying a lock according to our improved method, we
arrange, between the steering-tube and the head-tube, a plate, the outer side of
which is formed or furnished with a pin which projects laterally through the
head-tube and is surrounded by a boss carried by the head-tube. Into this boss
is screwed a stud provided with a milled or other head for enabling it to be
conveniently manipulated. The stud is bored centrally and fitted with a lock-
ing stud, formed externally with a shoulder and threaded internally to fit the
screwed pin carried by the plate before referred to. By means of the main
stud, the plate may be forced against the steering tube, the latter being thereby
secured in any desired position; but upon the main stud being screwed back,
the plate is withdrawn and the head of the machine left perfectly free. Owing
however to the presence of the central locking-stud with which the main stud
is provided, the latter can only be withdrawn a certain distance; that is to say,
until the internal shoulder of the main stud arrives against the external shoulder
of the locking-stud. The main and locking-studs are unable to revolve in unison
in the boss and upon the pin respectively, owing to the former being provided
with a coarser thread than the latter.
Improvements in Cycle-head UCAD.
We, CLARK BROTHERS, CYCLE COMPANY, LIMITED, of Essex Cycle Works, 24,
Dames Road, Forest Gate, in the County of Essex, Cycle Manufacturers, and
JAMES WILLIAM MOORE, of the same address, Foreman in the employ of the said
Company, do hereby declare the nature of this invention and in what manner the

page_text: same is to be performed to be particularly described and ascertained in and by
the following statement:
-
This invention relates to means for locking the front wheel of a bicycle, tricycle
or like machine, in any desired position; the steering-tube carrying the handle-
bar, front fork and wheel being free, when the lock is released, to move rota-
tively without risk of any portion of the locking gear fouling; the whole of the
said gear being mounted upon the head-tube of the machine.
In the accompanying drawings, Fig. 1 is a side elevation and Fig. 2 a front
elevation and part vertical section of a cycle-head provided with means for lock-
ing the same in accordance with our invention. Fig. 3 is a detached view of
the locking plate.
In constructing and applying a lock according to our improved method, we
insert, between the steering-tube a and the head-tube b, a plate c, the outer side
of which carries a boss d. This boss enters a nipple e which projects outwardly
through a hole in the head-tube and is secured by means of a lock-nut el.
Into the nipple e is screwed a stud f provided with a milled or other head fl
suitable for manual operation. The stud is bored centrally and fitted with a
lecking-pin y formed as to its outer extremity with a head gl and as to its inner
extremity with a threaded portion adapted to fit the internally screwed boss d.
The head g of the locking-pin g occupies a recess f formed in the milled
head of the main stud f; this locking-pin, serving as a "keep" to the main
stud f. By means of the main stud f, the plate c may be forced against the
steering-tube a, the latter being thereby secured so as to afford any desired degree
of friction; but, upon the main stud being screwed back, the plate e is with-
drawn and the steering-tube left perfectly free. Owing, however, to the presence
of the central locking-pin g, the main stud f can only be withdrawn a certain
distance; that is to say, until the face of the recess in the main stud f arrives
against the head g' of the locking-pin g. The main stud f is unable to revolve
the locking-pin 9, owing to the former turning upon the smooth surface of the
latter and to the difference in pitch of the screw-threads pertaining to the main
stud f and to the inner extremity of the locking-pin g respectively.
The construction particularly described with reference to the accompanying
drawings is designed for application to existing machines; but for original appli-
cations of the device, it will be obvious that for the nipple e a boss, formed
integral with the socket of the head-tube b, may be substituted.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we claim :-
1. For locking the front wheel of a bicycle, tricycle or like machine, the
improved means, arranged substantially as herein described and operating to
force the steering-tube laterally against its bearings in the head-tube.
2. For locking the front wheel of a bicycle, tricycle or like machine, the
employment of a plate, such as c, adapted to be forced, by means of a screw-
stud, such as f, against the side of the steering-tube; the said stud being furnished
with a keep-pin g for limiting the extent to which the stud may be withdrawn.
3. In a cycle-head lock, the combination, with a nipple e mounted in the
head-tube, or with a boss in place thereof, of a plate c, screw-stud f suitable for
manual operation, and a controlling or keep-pin g, substantially as and for the
purpose set forth.
G. G. M. HARDINGHAM,
Chartered Patent Agent, Clun House, Surrey Street, London, W.C.