An Improved Form of Cyclometer.
Year: 1893

page_text: Date of Application, 10th Nov., 1893
Complete Specification Left, 2nd Aug., 1894-Accepted, 27th Oct., 1894
An Improved Form of Cyclometer.
GEORGE ERNEST DELL Watlington Oxfordshire Jeweller do hereby declare
the nature of this invention to be as follows:-
Relating to improvements in the construction of cyclometers to be used on
velocipedes.
Which improvements claim to be.
1st. An arrangement of its parts, so that, the same cyclometer may be used on
wheels having different diameters.
2nd. That while the hand or hands upon its face may be at any time altered in
position or set to zero as second set of hands or dials will continually keep an
independant record of the distance travelled.
the
The above improvements are thus carried out.
The cyclometer is formed of a shallow circular case having a top and bottom.
Pivotted in the centre of the bottom and coming through the centre of the top of
case, is the main arbor.
Laying upon the bottom of the case and attached to the main arbor is a circular
plate or wheel A, free to turn with the arbor.
Upon the face of this wheel A are concentric rings upon which teeth are formed;
the number of teeth upon each ring having a definite relation to the diameter of
wheel it is intended to be used with.
Projecting through the side of the case is a tube which retains in place but
allows to revolve, a spindle.
The spindle, has fastened to its outer end a star wheel, which is carried forward
the distance of one tooth for every revolution of the velocipede wheel, by a
projection from the wheel.
Upon the other end of the spindle is formed a pinion of one or more teeth and so
placed as to act upon the teeth formed upon the concentric rings before mentioned,
thereby moving the rings and wheel A à distance equal to one or more teeth at
every revolution of the spindle.
The spindle slides end wise in the projecting tube so as to bring the pinion upon
its inner end over, and in contact with either of the concentric rings of teeth.
The spindle is retained in any desired position end wise, by a set screw passing
through the projecting tube and entering a notch formed round the spindle.
From the bottom of wheel A that carries the teeth upon its face projects a short
pin. The bottom of the case having an annular groove formed in it for the pin
to travel in as the wheel turns, as it does once for every mile passed over by the
velocipede.
Let in a recess in the bottom of the case and free to turn is a star wheel of ten
teeth placed so that the short pin in the wheel A will engage one tooth at each
revolution.
Upon the back of the star wheel and corresponding in number to the teeth,
figures will be stamped so that they may be read through openings in the bottom of
the case.
This star wheel having ten teeth will indicate miles up to ten.
A second star wheel will be so placed that a projection from the first star wheel
will engage a tooth of the second star wheel once in every revolution.
This second star wheel will indicate miles up to one hundred.

page_text: Any convenient number of star wheels may be added so as to indicate up to any
desired number of miles.
Dated this 9th day of November 1893.
An Improved Form of Cyclometer.
I, GEORGE ERNEST DELL Watlington Tetsworth Oxfordshire Jeweller 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 :--
My invention relates to improvements in cyclometers, or instruments for
measureing the distance travelled by wheeled vehicles being particularly applicable
to velocipedes.
The objects of my invention are to provide a cyclometer so made that one and
the same cyclometer may be used upon wheels having different diameters and that
while the hand or hands upon its face may at any time be altered in position or set
to zero, a second set of hands or dials will continually keep up an independent
record of the distance travelled.
I attain these objects by the mechanism herein described and illustrated.
Fig. I is a plan showing the wheel Y with the teeth upon its face and the
spindle with the pinion of one tooth H.
Fig. II is a plan of a cyclometer case showing the star-wheels Q and R lying
upon its bottom.
Fig. III is a section through the line A, B to show the disc wheel Y and the
star-wheels R and Q lying upon the bottom of the case.
Similar letters refer to similar parts throughout the drawings.
Pivotted, preferably in the centre of the cyclometer case is a circular plate or
disc Y free to turn upon a central pivot D. Upon either side of the disc Y are
formed teeth or notches Z in circles concentric with the pivot D round which the
disc Y turns. The number of teeth in each circle having a definite relation to the
size of the vehicle wheel with which it is to be used.
Projecting through or from the side of the case G is a tube C which retains in
place but allows to revolve a spindle F. The spindle F has fastened upon its outer
end a star-wheel E or other means of rotating the spindle a certain distance or
amount of revolution at every revolution of the vehicle wheel. Upon the other
end of the spindle F is formed a pinion of one or more teeth H and so placed as to
act upon the teeth formed upon the disc, Y, before mentioned, thereby turning the
rings of teeth and disc-wheel Y a distance of one or more teeth at every revolution
of the spindle F according to whether there are one or more teeth formed upon it.
The spindle F slides endwise in its tube C so as to bring the pinion H upon its
inner end over and in contact with either of the concentric rings of teeth. The
spindle being retained in any desired position end wise by the set screw I passing
through the tube C and entering a notch formed round the spindle.
The usual hands or pointers of the cyclometer which may be set to zero are
actuated by the rotation of the toothed disc wheel Y by any convenient and well
known method. But as well as these is an independent set of dials or indicators
applied to a cyclometer as follows.
Lying upon the bottom of the cyclometer case P and free to turn upon a centre
pivot is a small star-wheel Q having preferably 10 teeth, and on the under side
having numerals formed from 1 to 10 corresponding in position with the teeth.
Apertures being formed in the bottom of the case through which the numerals may
be read. Also upon the bottom of the case P is a second and similar star-wheel R
pivoted in such a position that a projection J. Fig. II upon the first star wheel Q

page_text: shall actuate at every revolution of the star-wheel Q one tooth of the second
star-wheel R. The second star-wheel having 10 teeth will complete one revolution
after the first star wheel Q bas made 10 complete revolutions. The first star
wheel will indicate miles or any other desirable unit of distance up to 10. The
second wheel will indicate distances up to 100 indications. Any convenient
number of star-wheels that the case will contain may be added so as to indicate
any desired number of miles or units of distance required. The first star-wheel Q
is actuated by a pin projecting downwards from the toothed wheel Y and travelling
in the groove L or from any other suitably moving part of the cyclometer. If the
wheel carrying the actuating pin makes other than one complete revolution in the
unit distance that the secondary dials are meant to indicate, the teeth in the first
star-wheel must be made of greater or less number accordingly. Thus if the wheel
carrying the pin should make two revolutions in the mile the first star wheel Q
should have 20 teeth instead of ten which it would require if the pin wheel Y made
but one revolution in the mile. These pieces Q and R called star-wheels may each
have double the number of teeth say 20 each but will then require to be driven by
two pins or projections so as to retain their relative motions of one to ten or they
may have 50 teeth and then will be driven by 5 projections which may be a pinion
of 5 teeth.
Though these secondary indexes are described as being read through the bottom
of the case they may be inverted so as to be read through the top or dial and
though described as having numerals formed on the star-wheels to be read through
openings in the case they may have instead hands or pointers fixed to their centre
pivots moving over dials suitably divided and marked.
These improvements may be applied to any existing form of cyclometer that will
admit of their application.
D
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. The combined construction and arrangement of the various parts substantially
as herein described and illustrated.
2. In cyclometers of the class herein described a disc or wheel having one or
more rings of teeth formed upon its face, on either side, the said wheel or disc
being driven by a pinion of one or more teeth, said pinion being carried in a sleeve
or tube attached to the casing containing the mechanism and having a star or spur
wheel affixed to outer end of same, said star wheel being driven by a projection on
the wheel of the velocipede or the like.
A secondary set of indicating wheels and hands operated by said toothed disc or
wheel substantially as described & illustrated herein.
Dated this 1st day of August 1894.
GEO. E. DELL,
Applicant.