Improvements in or relating to Head Locks for Cycles and the like.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Head Locks for Cycles and the like.
I, CHRISTOPHER HARCOURT SHACKLOCK, Cycle Works Manager, of The Ashes,
Wolverhampton, in the County of Stafford, do hereby declare the nature of this
invention to be as follows:-
This invention relates to head locks for cycles and the like. A small cylin-
drical casing is arranged at one side of the top lug of the head tube of a cycle and
within this casing is carried a short spring-controlled bolt. Transversely through
the bottom of the casing runs a short spindle provided with an external handle,
and carrying on the part which lies within the casing, a cam or projection which
on rotating the spindle is brought against the lower end of the bolt so as to
force the latter upwards against the controlling spring. The bolt now projects
beyond the upper end of the casing so as to engage with a suitable lug carried
on the head clip.
The bolt is conveniently constructed with a flange at one end which serves
as a bearing for a coiled spring carried on the bolt, the other end of the spring abut-
ting against a shoulder within the casing, which is preferably internally of two
different diameters, the upper end being smaller. The lower end of the casing
may conveniently be closed by a metal disc preferably provided with a small
projection which serves to close a slot in one side of the casing through which the
spindle carrying the operating cam is inserted. This disc may be sweated,
brazed or otherwise secured in place. The handle of the operating spindle may
be of various constructions, but preferably consists of a short rod connected
to the spindle at right angles to its axis.
DL: 101L
f NT.
11000
BOULT & WADE,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Head Locks for Cycles and the like.
I, CHRISTOPHER HARCOURT SHACKLOCK, Cycle Works Manager, of The Ashes,
Wolverhampton, in the County of Stafford, 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 relates to head locks for cycles and the like. A small cylin-

page_text: drical casing is arranged at one side of the top lug of the head tube of a cycle and
within this casing is carried a short spring-controlled bolt. Transversely through
the bottom of the casing runs a short spindle provided with an external handle
and carrying on the part which lies within the casing, a cam or projection which
on rotating the spindle is brought against the lower end of the bolt so as to
force the latter upwards against the controlling spring. The bolt now projects
beyond the upper end of the casing so as to engage with a suitable lug carried
on the head clip.
The bolt is conveniently constructed with a flange at one end which serves
as a bearing for a coiled spring carried on the bolt, the other end of the spring abut-
ting against a shoulder within the casing which is preferably internally of two
different diameters, the upper end being smaller. The lower end of the casing
may conveniently be closed by a metal disc preferably provided with a small
projection which serves to close a slot in one side of the casing through which the
spindle carrying the operating cam is inserted. This disc may be sweated,
brazed or otherwise secured in place: The handle of the operating spindle may
be of various constructions, but preferably consists of a short rod connected
to the spindle at right angles, to its axis.
LIG
In the accompanying drawings, which illustrate one method of carrying out
this invention:
*
Figure 1 is a central vertical section through a head lock, the lock being shown
in position upon the steering head of a cycle, and
Figure 2 is a plan of Figure 1, the lock being however shown in full.
Like letters indicate like parts throughout the drawings.
The top lug A of the head tube B of a cycle frame is provided with a
casing C, which may be either integral with the lug or secured to the same in
any convenient manner. A short spindle 1) is mounted in the lower end of the
casing C, the longitudinal axis of the spindle being at right angles to that of the
casing. That part of the spindle D within the casing C carries a cam D¹; and
outside the casing the spindle is provided with a handle D2. Mounted above the
cam D within the casing C is a bolt E. provided at its lower end with a flange
cr head E, and the bore of the casing is made smaller at its upper end as
shown at C so that a shoulder is formed within the casing which faces the
shoulder or flange on the bolt E. A spiral spring Fis arranged to operate
between these opposing shoulders, so that the bolt is always urged in a down-
ward direction upon the cam D¹.
When the bolt E is in the raised position, as shown in the drawings, it pro-
jects beyond the casing C and engages with the lug G, which is made integral
with, or secured in any convenient manner to the head clip G¹ of the cycle.
The head clip G¹, which is secured to the steering tube in the usual well-known
manner and turns with the tube, is locked rigidly to the lug A of the head
tube B so long as the bolt E is in its raised position, but by lowering the
handle 1 of the spindle D the cam D¹ is thrown down into a horizontal posi-
tion, so that the bolt. E urged down by the spring F is withdrawn from the
lug G of the head clip G¹, the steering tube thus being left free to rotate in the
usual manner.
The lower end of the casing C may, if desired, be closed by any convenient
means, such as by a screw. H threaded into the core of the casing, and for con-
venience in manufacture one side of the casing C is slotted at C to permit of
the spindle D being placed in position, its displacement being afterwards pre-
vented by the screw H.
It is obvious that the casing C may, if preferred, be placed in a horizontal
position upon the lug A, so that the bolt E is projected into that part of the
steering tube which passes through the lug A when it is desired to lock the
head; also the spindle D with its cam D¹ may be arranged to slide transversely
through the casing C, when it is required to oscillate the bolt E, instead of being
rotated by the handle 12 without departing from the nature of this invention.

page_text: Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what
I claim is:.
1. In a head lock for cycles and the like the combination with a cam piece
carried by the head tube of a bolt projected by the said cam piece so as to
engage with the steering tube substantially as described.
2. In a head lock for cycles and the like the combination with a casing carried
by a head tube and containing a cam piece and spring-controlled bolt of a lug
secured to the steering-tube and arranged to receive the bolt when projected by
the cam substantially as described.
3. The complete head lock for cycles and the like arranged and operating sub-
stantially as described and illustrated in the accompanying drawings.
1 L 1
1 1000
1034
C. H. SHACKLOCK.
Boult & Wade,
Agents for the Applicant.
C. H. SHACKLOCK.
Boult & Wade,
Agents for the Applicant.