Improvements in and relating to the Driving Gear of Bicycles.
Year: 1894

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to the Driving Gear of Bicycles.
We PAUL MALICET and EUGENE BLIN both of Aubervilliers in the Republic
of France Manufacturing Engineers do hereby declare the nature of this invention
to be as follows:-
This invention relates to the driving gear of bicycles and is intended to replace-
the chain and chain wheels usually employed for transmitting the rotary movement
of the pedal crank shaft to the driving wheel hub.
On one of the stay rods which is part of the frame of the bicycle and extends
from the socket in which the pedal crank shaft revolves to one of the sockets
carrying the driving wheel axle or to the fork carrying said wheel where a fork is
employed, we provide the cones or equivalent members of two ball bearings intended
to carry a tube encircling the said stay rod so that the tube may be revolved on the
stay rod with the minimum of friction. This tube is geared at one end to the pedal
crank shaft and at the other end to the driving wheel hub by means of bevelled
gearing.
Dated this 24th day of September 1894.
HERBERT HADDAN & Co.,
Agents to Applicants
VUMI DULTIVATION
Improvements in and relating to the Driving Gear of Bicycles.
We PAUL MALICET and EUGENE BLIN both of Aubervilliers, in the Republic
of France, Manufacturing Engineers, 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 the driving gear of bicycles and is intended to replace
the chain and chain wheels usually employed for transmitting the rotary movement
of the pedal crank shaft to the driving wheel hub.
On one of the stay rods which is part of the frame of the bicycle and extends
from the socket in which the pedal crank shaft revolves to one of the sockets
carrying the driving wheel axle or to the fork carrying said wheel, where a fork is
employed, we provide the cones or equivalent members of two ball bearings
intended to carry a tube encircling the said stay rod so that the tube may be
revolved on the stay rod with the minimum of friction.
This tube is geared at one end to the pedal crank shaft and at the other end to
the driving wheel hub by means of bevelled gearing.
The annexed drawing shows a horizontal section of this improved gearing.
On the pedal crank shaft A in place of the ordinary chain wheel there is fitted
in the same place the bevelled toothed wheel R which meshes with the bevelled
toothed pinion r fixed on one end of the sleeve F. This sleeve surrounds the tube or
rod E which forms part of the frame of the machine and at the other end of the
said sleeve F is fixed a bevelled toothed piuion ¹ meshing with a bevelled toothed

page_text: wheel c which is screwed or otherwise secured upon or made part of the hub of the
driving wheel B. Within the pinions and are bearings 6 6 respectively and
on the tube or rod E are the two cones ff which form the counterparts of said
bearings respectively, between which cones and bearings run the balls in the same
manner as with other ball bearings. One of the cones, for instance f¹, may be
fixed and the other, for instance, may be adjustable. The sleeve F therefore
revolves round the tube or rod 'E without touching the latter, the bearings being
respectively near the pedal crank socket and the driving wheel axle, thus giving
strength and rigidity to this method of gearing.
Having now particularly 'described and ascertained the nature of this said
invention and in what manner the same is to be performed we declare that what
we claim is ;
A gearing for connection of the pedal crank shaft and driving wheel of a
bicycle, comprising a sleeve surrounding one of the frame connecting rods or tubes
and supported thereon by bearings, preferably ball bearings, at the ends thereot
the said sleeve carrying two bevelled toothed pinions, one at each end, meshing
respectively with bevelled toothed wheels on the pedal crank axle and driving
wheel hub substantially as set forth and illustrated.
.Dated this 22nd day of June 1895.
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, W.C., Agents to Applicants.