Improvements in and relating to Combined Cyclometers and Timekeepers.
Year: 1897

page_text: Date of Application, 14th July, 1897
Complete Specification Left 14th Apr. 1898-Accepted 14th May. 1898
PROVISIONAL SPECIFICATION.
Improvements in and relating to Combined Cyclometers and
Timekeepers.
We, JOHN DAVIDSON, of 272, Friern Road, East Dulwich, in the County of Surrey,
Clockmaker, and JOHN DAVIDSON & COMPANY, LTD., of 11, Edmund Place, Alders-
gate Street, in the County of London, Manufacturers, do hereby declare the nature
of this invention to be as follows:-
This invention relates to combined cyclometers and timekeepers.
According to our invention we combine a cyclometer and a watch in such a
manner that one face serves for indicating both time and distance travelled. For
this purpose the arbor of the mile wheel of the cyclometer is made hollow and the
arbors of the hour and minute hands of the watch are made sufficiently long to
extend through the cyclometer and to project from the face thereof so that when
the hands are placed thereon they rotate in front of the said face which is also
marked with hour and minute divisions like an ordinary watch to indicate time.
The cyclometer case may be suitably attached to the front of the watch case,
or it may be made in one with the watch case.
The above described instrument may be attached in any suitable position to the
cycle, but we prefer to attach it to the handle bar so that it can be seen by the
rider. And when so placed we drive the cyclometer by a flexible connection from
a star wheel near the hub of one of the cycle wheels which star wheel is rotated
intermittently in a well-known manner by a striking piece on one of the spokes
of the cycle wheel. This flexible connection forms an important feature of our
invention. It consists preferably of a spiral wire or other flexible driving shaft
made in two pieces united by a telescopic piece and a screw or similar device which
allows of the flexible connection being lengthened and shortened to suit machines
of different sizes, and to allow of the handle bar being raised and lowered when
desired.
100%
Improvements in and relating to Combined Cyclometers and
Timekeepers.
We, JOHN DAVIDSON, of 272, Friern Road, East Dulwich, in the County of Surrey,
lockmaker, and JOHN DAVIDSON AND COMPANY LD., of 11, Edmund Place, Alders-
Price 817

page_text: gate Street, in the County of London, Manufacturers, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement: —
This invention relates to a combined cyclometer and watch for the use of cyclists,
the same being constructed to indicate upon one face or dial both distance travelled
and time.
For this purpose the cyclometer is secured to the front of the watch, or is made
integral therewith, and the arbor of the rotary mile hand of the cyclometer is
made hollow to receive the arbors of the hour and minute hands of the watch.
The latter arbors are made sufficiently long to extend through the arbor of the
mile hand and to project from the face or dial of the cyclometer, so that when the
hour and minute hands are in position they revolve in front of the said face or
dial which in addition to the cyclometer or distance indications is marked with
divisions like the dial of an ordinary watch to indicate time.
The instrument may be attached to any suitable part of the cycle, but we prefer
to attach it to the handle bar so that it may be seen clearly by the rider when in
the saddle. We drive the cyclometer by a flexible and adjustable shaft from a
star wheel near the hub of one of the wheels of the cycle, which star wheel is
rotated intermittently in a well known manner by a striking piece on one of the
spokes of the cycle wheel.
In order that our invention may be clearly understood, we will now describe
the same with reference to the accompanying drawings, in which:-
Fig. 1 is a side view of the front wheel of a bicycle, and a portion of the frame,
and shows our cyclometer watch attached to the handle bar.
Fig. 2 is a front view, and
Fig. 3 is a side view of the cyclometer watch drawn to an enlarged scale.
Fig. 4 is a transverse section through the cyclometer showing the internal
mechanism in side elevation.
Fig. 5 is a longitudinal section through the hollow arbor of the cyclometer.
Fig. 6 is a face view of the cyclometer mechanism.
Fig. 7 is a side view partly in section of the telescopic connection in the flexible
driving shaft, and
Fig. 8 is a front view on a smaller scale of the bracket for supporting the
flexible shaft.
Like letters of reference denote corresponding parts in the several figures.
A denotes generally the watch, and B the cyclometer, the frame of the latter
being secured on the front of the frame of the former or being
formed integrally therewith as may be desired. The apparatus may be
attached to any suitable part of the frame of the bicycle but we
prefer to attach it to the handle bar so that it may be in full
view of the rider. For this purpose it is provided at the back with a suitable
clamp O. The watch is the same as an ordinary watch without dial except that
the arbors C and D of the minute and hour hands E and F respectively are much
longer than in an ordinary watch and they project through the hollow arbor G
of the mile hand H of the cyclometer. All three hands are arranged to rotate in
front of the dial or face J which serves for indicating both time and distance, it
being marked with minute and hour divisions like an ordinary watch dial in
addition to being perforated and divided in the usual manner of a cyclometer
dial. We use any ordinary cyclometer having a central hand H which rotates
say once for each mile travelled, and a system of wheels h¹, h2, h3, h4 and dials
attached thereto adapted to be turned intermittently by means of fingers j¹, j², j³, jª
each wheel in the series being advanced one tooth upon the completion of a
revolution of the preceding wheel in the series, so as to indicate respectively units,
tens, hundreds, and thousands of miles. Such cyclometers are well known and we
make no claim to the same. The mile hand of the cyclometer is driven through
the train of wheels L, L1, L2, the first of which gears with a worm M whose
spindle projects through the side of the case and is driven through bevel wheels N

page_text: by a spindle n supported in a bearing n¹ attached to or formed in the case. P is
a flexible driving shaft supported at the lower end by a bracket p attached to the
frame of the cycle near the centre of the front wheel, and coupled at its upper end
to the spindle n. p¹ is an intermediate bearing attached to the front fork p² and
serving to prevent the flexible shaft from swaying about too much. At the lower
end of the shaft is a star wheel p₁ which is driven intermittently in a well known
manner by a striking piece Q upon one of the spokes of the front wheel of the
bicycle. The star wheel is prevented by a spring P2, shown in Fig. 8, from
revolving too freely and overrunning the bicycle wheel when struck by the
aforesaid projection Q. The instrument being attached to the handle bar q it is
necessary or advisable that the flexible shaft be adjustable as to length to allow
of the handle bar being raised and lowered when required, and to allow of the
instrument being applied to machines of different sizes. For this purpose
we make the flexible shaft in two parts connected by an intermediate piece R
which can slide in the hollow flexible portions of the shaft and can be fixed by
screws in the couplings in any position to which it may be adjusted. The flexible
shaft may be conveniently made from coiled wire, or any other suitable shaft may
be used.
One great advantage of our cyclometer watch is that it affords a ready means of
ascertaining the speed of travel inasmuch as both distance and time are indicated
on one dial, so that the time taken to travel a mile or any fraction or multiple of
a mile can be instantly noted by simply observing the time and distance hands.
What is known as the dial mechanism of the watch, indicated at K Fig. 4, is
situated just in front of the top plate. of the watch and behind the bottom plate of
the cyclometer.
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 combined cyclometer and watch constructed to indicate both time and
distance on one dial, substantially as described.
2. In a combined cyclometer and watch having a dial marked with divisions
for time and distance, a rotary mile hand fixed on a hollow arbor, and hour and
minute hands fixed upon arbors that project through the said hollow arbor,
substantially as, and for the purpose, specified.
3. A combined cyclometer and watch constructed, and operated, substantially
as described with reference to the accompanying drawings, for the purposes
specified.
of 1000
GEORGE HARRISON,
35, Therapia Road, Honor Oak, London,
Agent for the Applicants.