Improvements in Gear Wheels for Bicycles and other Velocipedes and for other purposes.
Year: 1892

page_text: Date of Application, 17th Aug., 1892
Complete Specification Left, 8th Feb., 1893-Accepted, 20th May. 1893
PROVISIONAL SPECIFICATION.
Improvements in Gear Wheels for Bicycles and other Velocipedes
and for other purposes.
I, BERNARD WAREING, of 68 Northwood Street, in the City of Birmingham,
Jeweller, do hereby declare the nature of this invention to be as follows:-
―
This invention has reference to those gear wheels which are provided with pins
to serve as teeth and arranged to gear with other toothed wheels or pin wheels to
transmit power and motion from the pedals to the driving wheel of a safety bicycle
or for various other purposes where gear wheels are used. By my invention
the friction on the acting surfaces is reduced to a minimum and the teeth are very
strong and can readily be renewed when worn.
In carrying out my invention I provide a roller on each of the said pins which
serve as the teeth of the wheel thus very considerably reducing the friction on the
said pins or teeth.
When a gear wheel constructed in accordance with my invention is intended to
gear, as an internally toothed wheel, with a smaller externally toothed pinion, I
make the wheel of a circular plate having around its periphery a rim projecting on
one side of the plate around the pins and rollers and this rim has an internal flange
in a plane parallel with the plate. The rollers are situated between the said plate
and the flange and through these latter the said pins pass. Thus the pins are
supported at both ends and the rim and flange form a channel for lubricating
material so that thorough lubrication of the rollers is ensured.
When one or more of the rollers or pins is or are worn it or they can very
readily be removed and replaced by new ones.
Dated this 16th day of August 1899
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Gear Wheels for Bicycles and other Veloolpedes
and for other purposes.
I, BERNARD WAREING, of 68, Northwood Street, in the City of Birmingham,
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 :-
This invention has reference to those gear wheels which are provided with pins to
serve as teeth and are arranged to gear as internally toothed wheels with smaller
externally toothed pinions to transmit power and motion from the pedals to the
driving wheel of a safety bicycle or for various other purposes where similar gear
wheels are used. By my invention the friction on the acting surfaces is reduced to
a minimum and the teeth are very strong and can readily be renewed when worn
and thorough lubrication is ensured.
In carrying out my invention I make the said pin teeth as rollers arranged to
revolve in an oil channel formed by the circular plate or main portion of the wheel
having around its periphery a rim projecting on one side of the plate and a flange
fixed to the rim parallel with the plate the rollers being situated between the plate
and the flange. The pins or axes of the rollers pass through the plate and flange
and are thus supported at both ends and as the rim and flange form a channel for
lubricating material thorough lubrication of the rollers is ensured. When one or
more of the rollers or pins is or are worn it or they can, by first removing the
flange be very readily removed and replaced by new ones.

page_text: On the accompanying drawing Fig. 1 is a sectional elevation and Fig. 2 is a
front elevation of an internally toothed wheel constructed in accordance with this
invention; Fig. 3 is a front elevation and a sectional elevation of the annular rim
of the same separately; Figs. 4 and 5 respectively shew two forms of the rollers
of the said wheel separately and Fig. 6 shews one of the pins for use with the
roller when made as shewn in Fig. 5; Fig. 7 is a cross sectional elevation and
Fig. 8 is a front sectional elevation of a velocipede driving gear of the kind
described in my Specification No. 10318 of A.D. 1892 shewing two of my said
improved gear wheels applied thereto.
The same letters of reference indicate the same or corresponding parts in all the
figures.
A is the circular plate forming the wheel and a¹ is the rim formed around its
periphery projecting on one side of the plate around the rollers C which form
the internal teeth of the wheel. D is the internal flange between which and the
circular plate A the rollers C are situated the pins B passing through holes E
formed in the flange D and plate A at equal distances apart as shewn. The pins B
may either be fixed in these holes or bearings E or be loose so as to revolve
therein. When the pins B do not revolve in the holes or bearings E the rollers C
revolve on the pins and the pins are enlarged by preference at see Figs. 1, 2, 6
and 8 between the plate A and flange D to keep the flange and plate the proper
distance apart to allow of the rollers turning freely. When the pins B are arranged
to turn in the bearings E the pin B and roller C are made together in one piece as
shewn in Fig. 4. Three or more or less of the said pins (marked B') are made as
bolts or screws to pass through the plate A rollers and flange D and secure the
flange and plate together. It will be seen that the rim a' and flange D together
form a channel round the roller teeth C for lubricating material thus ensuring
thorough lubrication of the rollers. By first removing the screws or bolts B¹ any
of the rollers or pins can be removed if required and replaced by new ones.
The internally roller toothed wheel herein described is particularly useful for
that kind of cycle driving gear in which two of the said internally toothed wheels
are respectively fixed to and revolve with or are driven by the cranks and gear
with smaller externally toothed pinions revolving with the driving wheel. By way
of an illustration of this I have in Fig. 7 and Fig. 8 shewn my improved internally
roller toothed wheel above described applied to a cycle driving gear of the kind
described in my Specification No. 10318 of. A.D. 1892 and which gear needs no
description here as the gear itself forms no part of this invention.
I am aware that prior to my said invention gear wheels have been made with
roller teeth and I therefore wish it to be understood that I do not claim broadly to
have the exclusive use of roller teeth in gear wheels but
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. In an internally roller toothed gear wheel and in combination with the
roller teeth thereof, the employment of an annular channel surrounding and
supporting the roller teeth substantially as hereinbefore set forth.
2. The hereindescribed improved roller toothed gear wheel for internal gear
consisting of the combination of the circular plate or part A the rim a
surrounding the same, the flange D and the rollers C contained between and
supported by the flange D and the plate A, all substantially as herein before
described and illustrated by the accompanying drawing.
Dated this 7th day of February 1893.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.