Improvements in Gearing for Cycles.
Year: 1894

page_text: Date of Application, 24th Sept., 1894
Complete Specification Left, 23rd July, 1395-Accepted, 21st Sept., 1895
Improvements in Gearing for Cycles.
I ALBERT EDWARD HODDER of No. 71 Sunderland Road, Forest Hill, in
the County of Kent, Engineer, do hereby declare the nature of this invention to
be as follows:-
My invention relates to improvements in gearing for cycles and in carrying
such invention into practice, I mount upon the axle of the driving-wheel, two
chain-wheels, one upon each side of such driving-wheel, and upon the pedal axle
I mount two small sleeves so that the axle is capable of revolving freely in
same, two chain wheels one larger than the other being mounted upon said sleeves.
Between said sleeves I mount a clip, which is so constructed, as to be adapted to
engage either the one or the other of such sleeves.
Up
Upon engaging the sleeve with the small wheel, the gear is made to run at one
speed, and by engaging the larger sleeve, the gear is run at a higher speed. The
said sleeves are mounted between the pedals and are provided with a journal to
take the bearings.
Dated this out
J
1
1004
HUGHES, SON & Co.,
38 Chancery Lane, London, W.C., Agents for the Applicant.
Improvements in Gearing for Cycles.
I ALBERT EDWARD HODDER, of No. 71, Sunderland Road, Forest Hill, in
the County of Kent, Engineer, 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 gearing for cycles and has for its object, to propel a
bicycle by the ordinary foot pedals, so that the rider may have at his command at
all times, two gears (for example 80 and 100 inch) either of which can be used at
the will of the driver, thus enabling him to travel easily up hill, and at a high
speed upon the level road.
In order that the invention may be the more readily understood, reference is
made to the two accompanying sheets of illustrative drawings wherein :
Fig. 1 is a view of the spindle or shaft with flat portions at a, screw-threaded
at B B, and square at C.
Fig. 2 is an end view of the chain wheel attached to clutch, of which Fig. 3 is a
side view and
Fig. 4 a section.
It will be observed that the hole a is sufficiently large to pass over the screw-
threaded parts B B shewn in Fig. 1, also that it is grooved at B (Fig. 3) to
receive the ball-bearings and recessed or sunk at the two sides C (Fig. 4). I use
two of these clutches as shewn in Figs. 13 and 14, the one having a larger chain-
wheel attached, than the other.

page_text: Fig. 5 is a section of one of the clutches having a square hole through a to fit
lightly on C (Fig. 1) and also tongues to engage clutch, (Figs. 2 3 and 4) a
groove B being also provided around its periphery.
Fig. 6 is an end view of Fig. 5.
Fig. 7 being a side view of the same.
Fig. 8 is a side view of the bearings, having a fillet D which can be withdrawn
by withdrawing set-screw E so as to admit of balls passing through the passage
made by the withdrawal of the said fillet D.
Fig. 9 is a side view of Fig. 8, shewing the hole in a tongue at the bottom by
means of which it is keyed to the bicycle frame, the said tongue dropping into
suitable jaws in the bicycle frame and held therein by a key passing through the
holes.
Fig. 10 is view of Fig. 9, looking from the reverse side.
Fig. 11 is a front view of a bearing for the balls to run on, the said bearing
being tapped to screw upon B (Fig. 1).
Fig. 12 is a side view of Fig. 11.
Fig. 13 is a view of the gearing when put together ready for mounting on the
bicycle.
Fig. 14 being a section of same.
For the purpose of identifying the parts and ascertaining their relative positions
they are numbered as on Sheet 1.
Ordinary steel balls are used for bearings as shewn in Fig. 14 A. and ordinary
pedal cranks as shewn in Fig. 13 and 14 at S.
It will be observed that the clutch 5 (Fig. 13) is controlled by a pair of small
bowls at the extremities of two small levers attached to a light rod which is
so fixed to the frame that the rider can manipulate it easily.
It is to be understood that the rear or driving wheel of the bicycle has two chain
wheels thereon one on each side, and that they are driven by the chains passing
over them and over the sprocket-wheels a in Fig. 13, so that if the clutch be
brought into gear upon one side the speed will be fast, and vice versa.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
1. A shaft or spindle having a square centre, with a clutch mounted thereon
capable of turning or engaging either of its fellows, one on the right and the
other on the left, substantially as described and shewn.
2. The adoption of sprocket wheels and clutch to produce a double gear,
substantially as described and illustrated.
Dated this 22nd day of July 1895.
HUGHES, SON & Co.,
38, Chancery Lane, W.C., Agents for the Applicant.