Improvements in Safety Bicycles.
Year: 1892

page_text: Date of Application, 17th May, 1892
Complete Specification Left, 17th Feb., 1893-Accepted, 22nd Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Safety Bicycles.
I, ROGER TATHAM of Wellington Terrace, Drake Street, Rochdale in the
County of Lancaster, Mechanical Engineer do hereby declare the nature of this
invention to be as follows:-
My invention relates to safety bicycles of the kind in which the motive-power
applied to the pedals is transmitted by chains or other gearing to the driving
wheels and consists in arrangements of gearing for transmitting the power from the
pedals to the driving wheels by the use of which while any desired increase of the
angular velocity of the driving wheels in relation to that of the shafts upon which
the pedals are mounted or in relation to that of any other parts from which motive.
power is transmitted may be obtained, less power shall be wasted than in the
arrangements hitherto employed to obtain the necessary speed of the driving
wheels.
According to the first part of my invention I employ in a safety bicycle to which
this part of my invention is applied an arrangement of gearing in which a disc or
discs provided with holes or slots or projecting pegs or teeth and mounted so as to
be capable of revolving upon a suitable part receiving motion in any suitable
manner from the pedals is caused to gear or engage with another disc provided
with projecting pegs or teeth or slots or holes mounted upon any suitable part of
the machine and prevented from rotating and is also caused to gear into or engage
with another disc provided with slots or holes or projecting pegs or teeth and
mounted in any suitable manner so as to be capable of revolving. From the disc
last named motion is transmitted to the driving wheel of the safety bicycle. In
order to reduce the friction involved in the working of the discs above described
the pegs which may be provided in any of the said discs may be provided with any
suitable arrangement of anti-friction rollers or other devices by which friction may
be reduced.
According to the second part of my invention I employ discs arranged in a
manner similar to those above described in reference to the first part of my inven-
tion but instead of providing such discs with slots or holes or projecting pegs or
teeth I provide such discs with friction surfaces which may be of any suitable
character size and form.
According to the third part of my invention I employ to transmit motion from
an arrangement of gearing such as is above described in reference to the first and
second parts of my invention, to the driving wheel of a safety bicycle to which this
third part of my invention is applied, a shaft extending from the neighbourhood of
the said arrangement of gearing to the neighbourhood of the axle or shaft of the
driving wheel of the machine and provided at each end with discs provided with
pegs or teeth or slots or holes and gearing into or engaging with discs provided
with slots or holes or pegs or teeth and formed or mounted, one upon the arrange-
ment of gearing above described and the other upon the axle or shaft or hub of the
driving wheel. The pegs or teeth employed may be provided with suitable anti-
friction rollers or any other suitable devices by the use of which friction in the
working of the arrangement may be diminished. By the use of this part of my
invention I am enabled to avoid the use of a chain and thus escape all the incon-
veniences which result from the employment of a chain.
According to a fourth part of my invention I employ an arrangement of gearing
such as is above described, and employ any suitable arrangement of toothed gearing
or fricton driving apparatus to transmit motion from the said arrangement of
gearing to the driving wheel of the safety bicycle to which this part of my

page_text: invention is applied. In this arrangement also the employment of a chain is
dispensed with and consequently all the inconveniences resulting from the employ-
ment of a chain are avoided.
According to the fifth part of my invention I employ an arrangement of gearing
such as is above described in reference to the first and second parts of my invention
but so arrange such arrangement of gearing that motion shall be transmitted to the
driving wheel from such arrangement of gearing without any intermediate apparatus
being employed and according to this part of my invention I employ to transmit
motion to the said arrangement of gearing from the pedals of the safety bicycle to
which this part of my invention is applied arrangements similar to those above
described in reference to the third and fourth parts of my invention but so arranged
as to be adapted to the change of the circumstances under which they are used or I
may employ a chain or any other suitable means for transmitting motion to such
arrangement of gearing.
Dated this Sixteenth day of May 1892
HOWARD
CHEETHAM,
Manchester, Agent to the Applicant.
COMPLETE SPECIFICATION.
Improvements in Safety Bicycles.
I, ROGER TATHAM, of Wellington Terrace, Drake Street, Rochdale, in the
County of Lancaster, Mechanical 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 safety bicycles of the kind in which the motive power
applied to the pedals is transmitted by chains or other gearing to the driving wheels
and consists in arrangements of gearing for transmitting the power from the pedals
to the driving wheels by the use of which while any desired increase of the angular
velocity of the driving wheels in relation to that of the shafts upon which the pedals
are mounted or in relation to that of any other parts from which motive power is
transmitted may be obtained, less power shall be wasted than in the arrangements
hitherto employed to obtain the necessary speed of the driving wheels.
According to the first part of my invention I employ in a safety bicycle to which
this part of my invention is applied an arrangement of gearing in which a disc or
discs provided with holes or slots or projecting pegs or teeth and mounted so as to
be capable of revolving upon a suitable part receiving motion in any suitable
nanner from the pedals is caused to gear or engage with another disc provided
with projecting pegs or teeth or slots or holes mounted upon any suitable part of
the machine and prevented from rotating and is also caused to gear into or engage
with another disc provided with slots or holes or projecting pegs or teeth and
mounted in any suitable manner so as to be capable of revolving. From the disc
last named motion is transmitted to the driving wheel of the safety bicycle. In
order to reduce the friction involved in the working of the discs above named the
pegs which may be provided in any of the said discs may be provided with any
suitable arrangement of anti-friction rollers or other devices by which friction may
be reduced.
This part of my invention and the manner in which it may be performed are
illustrated in Figs. 1, 2, 3, 4, 5, 6, and 7, of the accompanying drawings.
Fig. 1 is a diagrammatic side view of a safety bicycle constructed according to
this part of my invention but I would have it understood that Fig. 1 does not show
the features in which this part of my invention consists and that Fig. 1 is only
shown in the drawing in order to facilitate the description of the Figures 2, 3, 4, 5, 6,
and 7 which illustrate this part of my invention. In the safety bicycle illustrated
in Fig. 1(a) (a) are the cranks of the safety bicycle, (b) is the rear or driving
wheel and (c) is the front or steering wheel.

page_text: Fig. 2 is a plan of a safety bicycle illustrating one manner of carrying this part
of my invention into effect, and Figs. 3 and 4 show certain parts of the mechanism
detached, and Fig. 5 shows an alternative form of the part shown in Fig. 3.
In applying this part of my invention to a safety bicycle in the manner
illustrated in Fig. 2 I mount each of the cranks (a) part only of one of which is
shown in Fig. 2 so that it is capable of being revolved upon a stud (d) secured in
the framework of the safety bicycle. Upon the stud (d) of which one end only is
fully shown is secured so as to be incapable of revolving thereon a disc (e) which
may be provided with circular holes as is indicated in Fig. 3 or with radial slots as
is indicated in Fig. 5. Upon a stud (1) secured in the crank (a) a disc (/), which is
shown detached in Fig. 4, is mounted so as to be capable of revolving the disc ()
is provided with projecting pegs (¹) which engage with the holes or slots of the
disc (e) according as such disc (e) is of the form indicated in Fig. 3 or of the form
indicated in Fig. 5. A disc (9) is mounted upon the stud (d) so as to be capable
of being rotated thereon and such disc (g) may be provided with holes such as are
indicated in Fig. 3 or with radial slots such as are indicated in Fig. 5. but the
discs (e) (g) must either both be formed with holes like those indicated in Fig. 3 or
both be formed with radial slots like those indicated in Fig. 5. The projecting
pegs of the disc (f) gear into or engage with the holes or slots in the disc (9) as
well as with the holes or slots in the disc (e). It will be obvious that the projecting
pegs (f) of the said disc (f) must be so much smaller in diameter than the
diameter or width of the holes or slots with which they are required to gear or
engage that the discs (e) (7) and the disc (/) may gear freely together. The
disc (g) is secured to a chain wheel (h) from which motion is transmitted to the
driving wheel (b) of the safety bicycle by means of a chain (2) which may be of
any suitable form. When the crank (a) is caused to revolve the disc (f) being
moved around the circumference of the disc (e) will be caused to revolve about its
own axis and cause the disc (g) to be revolved about the axis of the stud (d) with
an angular velocity twice as great as the angular velocity of the crank (a). An
arrangement of mechanism precisely similar to that employed in conjunction with
the crank (a) is employed in conjunction with the other crank situate at the other
side of the safety bicycle and a second chain (i) of which a part only is shown is
employed to transmit rotary motion from the mechanism employed in conjunction
with the other crank to the driving wheel of the safety bicycle.
Fig. 6 is a plan of a safety bicycle illustrating another manner of carrying out
this part of my invention. The arrangement illustrated in Fig. 6 differs from the
arrangement illustrated in Fig. 2 in that whereas in the arrangement illustrated in
Fig. 2 it is necessary to employ two chains (i) and to employ the arrangement of
discs (e) (f) and (g) in which this part of my invention consists in duplicate it is
only necessary in the arrangement illustrated in Fig. 6 to employ one chain (i) and
one series of discs (e) (f) () to transmit motion from the cranks (a) of the safety
bicycle to the driving wheel () of such machine. The discs (e) and (9) which are
employed in the arrangement illustrated in Fig. 6 may either be both provided with
holes in the manner indicated in Fig. 3 or be both provided with radial slots in the
manner indicated in Fig. 5. The disc (e) is in the arrangement illustrated in
Fig. 6 secured to the framework (j) of the safety bicycle so as to be incapable of
being rotated and the disc (7) is secured to a chain wheel (4) from which motion
may be transmitted by means of a chain (i) and chain wheel (k) to the driving
wheel of the safety bicycle. In this arrangement the cranks (a) (a) are mounted
fast upon the ends of a shaft (m) which is mounted so as to be capable of being
revolved in bearings formed in or secured to the framework (1) of the safety
bicycle. The chain wheel (b) is mounted so as to be capable of being revolved
upon the shaft (m). A block (n) is mounted fast upon the shaft (m) and upon a
stud (n) projecting from the block (n) is mounted a disc (f) which is provided
with projecting pegs (f) adapted to gear into or engage with the holes or slots
formed in the discs (e) (g). In the arrangement illustrated in Fig. 6 when the

page_text: cranks (a) are caused to revolve the disc (7) will be caused to travel around the
circumference of the disc (e) and will so be caused to rotate about its own axis and
consequently the angular velocity imparted to the disc (9) and chain wheel (k) will
be twice as great as the angular velocity of the cranks (a).
I would have it understood that if it be considered desirable the discs (f)
employed in the arrangements illustrated in Figs. 2 and 6 may be provided with
holes or slots such as are indicated in Figs. 3 and 5 instead of with projecting
pegs (f) while the discs (e) (g) employed in such arrangements may be provided
with projecting pegs such as are indicated in Fig. 4. In Fig. 7 is illustrated the
manner in which the projecting pegs or discs to be employed in accordance with
this part of my invention may be provided with anti-friction rollers. In Fig. 7
the projecting peg (f) which as is preferably the case with all the projecting
pegs of discs employed in accordance with this part of my invention is turned and
inserted and secured by means of a pin (f) or in any other suitable manner in
the disc () to which it is applied is formed with a head (ƒ³) and a roller (f)
capable of being revolved upon the peg (f) and provided with a recess to receive
the head (f) is placed upon the peg (1) before such peg (1) is secured in the
disc (f) to which it is to be applied. It is obvious that,instead of being mounted
upon the cranks of a safety bicycle or parts directly revolved thereby the arrange-
ment of mechanism in which this part of my invention consists may be caused to
receive motion from the cranks of the safety bicycle in which it is applied by
means of gearing of any suitable character mounted in any way which may be
considered suitable.
I would have it distinctly understood that I am fully aware of arrangements of
bevel wheels being employed in order that an increase in the angular velocity
imparted to the driving wheels of safety bicycles in relation to the angular velocity
of the cranks of such safety bicycles and that I do not claim any such arrange-
ments of bevel wheels. Such arrangements of bevel wheel involve the loss of
much power.
The arrangement of a fixed disc or discs (e) provided with holes or slots or
projecting pegs or teeth a disc (f) provided with projecting pegs or teeth or
slots or holes and caused to travel around the fixed disc (e) and impart motion
to a disc (g) provided with slots or holes or projecting pegs or teeth and mounted
so as to be capable of revolving and transmitting rotary motion to the driving
wheel of the safety bicycle in which the arrangement is employed work with
much less friction and loss of power than the arrangements of bevel wheel
previously employed and consequently the arrangement in which this part of
my invention consists renders it more easy than it has hitherto been to obtain
any desired increase of the angular velocity of the driving wheel of a safety
bicycle in relation to that of the pedals of such safety bicycle.
According to the second part of my invention I employ discs arranged in a
manner similar to those above described in reference to the first part of my
invention but instead of providing such discs with slots or holes or projecting pegs
or teeth I provide such discs with friction surfaces which may be of any suitable
character size and form.
Fig. 8 is a diagram illustrating the manner in which this part of my invention
may be carried into effect and illustrates this part of my invention as applied in
an arrangement similar as a whole to that illustrated in Fig. 2 but it is obvious
that an arrangement of discs provided with friction surfaces in accordance with
this part of my invention may equally be employed in arrangements similar as a
whole to that illustrated in Fig. 6. As except for being provided with friction
surfaces instead of with slots or holes or projecting pegs or teeth the discs employed
in this arrangement are the same as in the arrangement above described in reference
to Figs. 2, 3, 4, 5, and 6, it is unnecessary to further describe this part of my
invention. The employment of this part of my invention by dispensing with all
engagement of projecting pegs or teeth with slots or holes enables useless friction

page_text: to be avoided and this enables the angular velocity of the driving wheels of safety
bicycles in relation to the velocity of the cranks of such safety bicycles to be
increased with very little unnecessary loss of power.
According to the third part of my invention I employ to transmit motion from:
an arrangement of gearing such as is above described in reference to the first and
second parts of my invention to the driving wheel of a safety bicycle to which.
this third part of my invention is applied a shaft extending from the neighbourhood
of the said arrangement of gearing to the neighbourhood of the axle or shaft of
the driving wheel of the machine and provided at each end with discs provided
with pegs or teeth or slots or holes and gearing into or engaging with discs pro-
vided with slots or holes or pegs or teeth and formed or mounted one upon the:
arrangement of gearing above described and the other upon the axle or shaft or
hub of the driving wheel. The pegs or teeth employed may be provided with.
suitable anti-friction rollers or any other suitable devices by the use of which,
friction in the working of the arrangement may be diminished.
By the use of this part of my invention I am enabled to avoid the use of a
chain and thus escape all the inconveniences which result from the employment of
a chain.
Fig. 9 of the accompanying drawings illustrates one manner in which this part.
of my invention may be carried into effect and as some of the parts illustrated in
Fig. 9 are similar in construction and use to corresponding parts illustrated in:
Fig. 6 previously described in reference to the first part of my invention I shall
apply to such parts the same letters of reference as are applied to the corre-
sponding parts in Fig. 6. In the arrangement shown in Fig. 9 the disc (g) instead
of being, secured to a chain wheel is secured to a collar (o) capable of being
revolved upon the shaft (m) and also capable of being revolved in a bearing
formed in or secured to the framework (j) of the safety bicycle. The collar (o)
forms one of the bearings in which the shaft (m) is supported. Upon the collar (o)
is secured a disc (p) which is formed with holes such as are indicated in Fig. 3 or
with radial slots such as are indicated in Fig. 5. Into the holes or slots in the.
dise (p) gear or engage projecting pegs similar to those shown in Fig. 4 which are
secured in a disc (7) which is mounted fast upon a shaft (r) which is mounted at
each end in hearings secured to the framework (j) of the safety bicycle. Fast
upon the shaft (r) is mounted another disc (8) which is also provided with
projecting pegs which are similar to those which are shown in Fig. 4. The
projecting pegs of the disc (8) gear into or engage with holes such as are shown.
in Fig. 3 or radial slots such as are shown in Fig. which holes or radial slots are
formed in a disc (t) secured upon the axle of the driving wheel () of the safety
bicycle.
According to a fourth part of my invention I employ an arrangement of gearing.
such as is above described and employ any suitable arrangement of toothed.
gearing or friction driving apparatus to transmit motion from the said arrangement
of gearing to the driving wheel of the safety bicycle to which this part of my
invention is applied. In this arrangement also, the employment of a chain is.
dispensed with and consequently all the inconveniences resulting from the
employment of a chain are avoided.
Figs. 10 and 11 of the accompanying drawings illustrate one form of friction
driving apparatus which may be employed in carrying this part of my invention
into effect. Fig. 10 being a side view and Fig. 11 a plan partly in section. (u) is
a disc or wheel which becomes gradually thinner towards its edge and (v) is
another disc or wheel which becomes gradually thinner towards its edge. One of
the discs or wheels (u) (1) for instance the disc or wheel (u) is mounted upon or
caused to receive motion from an arrangement of mechanism such as either of those
above described in reference to the first and second parts of my invention and the
other of the said dises or wheels is mounted upon the hub of the driving wheel of
the safety bicycle in which the apparatus is employed or upon the axle of such
driving wheel. (10) is a stud or axle which is supported by any suitable part or

page_text: parts of or connected to the framework (7) of the safety bicycle in any suitable
manner. (c) is a disc which is mounted upon the stud or axle (w) and is provided
with a socket which forms a segment of a spherical cavity and embraces a collar (11)
which forms a segment of a sphere and is secured upon the stud or axle (10).
(y) is a disc which is provided with a socket which forms a segment of a spherical
cavity and embraces so as to support the disc (y) a collar (w) which forms a
segment of a sphere and is capable of being slidden longitudinally upon the stud or
axle (w). Upon the disc (2) is formed a projecting beading (¹) and upon the
disc (y) is formed a projecting beading ('). () is a spring which surrounds the
stud or axle (w) and is capable of being compressed by means of a nut (w³)
screwing upon the stud or axle (w) which nut (203) may if it be deemed
desirable be secured by a lock-nut when adjusted into position. The spring (2)
causes the projecting beading (y') of the disc (y) to be pressed against
the inclined faces (u) (v) of the discs or wheels () () and the disc (a) is
so mounted upon the stud or axle (w) that the projecting beading (a) of such
disc () is caused to bear against the inclined faces (u³) (²) of the discs or
wheels (u) (v). By the inclined faces (¹) (2) and (¹) (²) of the discs or
wheels (u) (v) respectively being gripped between the discs (r) (y) sufficient
friction or adhesion is provided to enable power applied by the pedals of the safety
bicycle to the arrangement of mechanism from which the disc or wheel (1) receives
motion to be transmitted to the disc or wheel (v) and so to the driving wheel of
such safety bicycle and as it results from the formation of the wheels or
discs (u) (e) and the discs (a) (y) that the contact and friction or adhesion occur
between very small portions of the discs or wheels (u) (v) and the discs (*) (y)
very little or no power is wasted by one part sliding over another.
that if it be deemed desirable a spring like the spring (2) may be employed to
press the disc (c) towards the discs or wheels (1) (v) so as to render the arrange-
ment more capable of adjustment. The employment of toothed gearing in
accordance with this part of my invention does not need to be illustrated by a
drawing or to be further described to be fully understood.
It is obvious
According to the fifth part of my invention I employ an arrangement of gearing
such as is above described in reference to the first and second parts of my
invention but so arrange such arrangement of gearing that motion shall be
transmitted to the driving wheel from such arrangement of gearing without any
intermediate apparatus being employed and according to this part of my invention
I employ to transmit motion to the said arrangement of gearing from the pedals of
the safety bicycles to which this part of my invention is applied arrangements
similar to those above described in reference to the third and fourth parts of my
invention but so arranged as to be adapted to the change of the circumstances
under which they are used or I may employ a chain or any other suitable means for
transmitting motion to such arrangement of gearing.
Fig. 12 of the accompanying drawings is a plan illustrating one method of
carrying this part of my invention into effect and shows an arrangement of mechanism
similar to that described in reference to the first part of my invention as applied to
transmit motion to the driving wheel of a safety bicycle without any intermediate
apparatus being employed. In the arrangement illustrated in Fig. 12 (e) is a disc
which may be of either of the kinds above described in reference to the first part
of my invention. The disc (e) is secured to the framework (j) of the safety bicycle
in any suitable manner so as to be incapable of being revolved and with the disc (e)
engages a disc () which being made of either of the forms above described in
reference to the first part of my invention which inay be suitable for gearing or
engaging with the disc (e) is caused to gear into or engage with such disc (e) and
also to gear into or engage with a disc (y) which is made like the disc (e) but
secured to the hub or axle of the driving wheel (b) of the safety bicycle. The
disc (f) is mounted in a chain wheel (A) which is capable of being revolved upon a
collar projecting from the disc (e) or the framework of the safety bicycle but
preferably upon the axle of the driving wheel (b) of the safety bicycle or upon the

page_text: hub of such driving wheel (b). When motion is transmitted by the chain (i) to
the chain wheel (k) from the pedals of the safety bicycle the disc (f) is caused to
travel around the circumference of the disc (e) and to revolve about its own axis so
as to cause the disc (g) and the driving wheel (b) of the safety bicycle to revolve
with an angular velocity which is twice as great as that of the chain wheel (k). It
is obvious without further description that the arrangement of shaft (r) and
discs (q) (s) or the arrangement of friction driving apparatus or the arrangements
of toothed gearing above described in reference to the third and fourth parts of my
invention as being employed to transmit motion from the arrangements of mechanism
described above as forming the first and second parts of my invention or any other
suitable means may be readily adapted to transmit motion from the pedals of the
safety bicycle to the arrangement of discs (c) (f) and (9) which is shown in Fig. 12.
It is obvious without further description that although I have not shown any of
the bearings in safety bicyles constructed according to my invention as being ball
or roller bearings any of the bearings of safety bicycles constructed according to my
invention may be ball or roller bearings as may be desirable. I have omitted the
projecting pegs referred to from all the figures of the accompanying drawing
except Fig. 5 in order to avoid confusion of the other figures which are necessarily
drawn to a small scale.
I would also have it understood that any suitable arrangements of guards or
covers for excluding dust and dirt and protecting the mechanism provided in
accordance with my invention from injury and preventing such mechanism from
injuring the clothes of riders of safety bicycles constructed according to my invention
may be provided.
I would again point out that I do not claim as any part of my invention any
arrangement of bevel wheels.
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 a safety bicycle the arrangement of gearing consisting in a disc provided
with holes or slots or projecting pegs or teeth and mounted so as to be incapable of
revolving, a disc connected to the cranks or one of the cranks of the safety bicycle
and provided with projecting pegs or teeth or slots or holes and gearing into or
engaging with and caused by the revolution of the cranks or crank to which it is
connected to travel around, the circumference of the disc aforesaid which is
incapable of revolving and a disc provided with holes or slots or projecting pegs or
teeth and mounted so as to be capable of revolving and of gearing into or engaging
with the disc connected to the cranks or crank and of transmitting motion to the
driving wheel of the safety bicycle, all arranged, employed and operating sub-
stantially in the manner and for the purposes herein before described in reference to
the first part of my invention and illustrated by Figs. 2, 3, 4, 5 and 6, of the
accompanying drawings.
2. In a safety bicycle the arrangement of gearing consisting in a disc provided
with a friction surface and mounted so as to be incapable of revolving, a disc
connected to the cranks or one of the cranks of the safety bicycle and provided with
a friction surface and bearing against and caused by the revolution of the cranks
or crank to travel around the circumference of the disc aforesaid which is incapable
of revolving and a disc provided with a friction surface and mounted so as to be
capable of revolving and of bearing against the disc connected to the cranks or crank
and of transmitting motion to the driving wheel of the safety bicycle all arranged
employed and operating substantially in the manner and for the purposes herein-
before described in reference to the second part of my invention and illustrated by
Fig. 8 of the accompanying drawings.
3. In a safety bicycle and in conjunction with an arrangement of gearing such as
is above described in reference to the first and second parts of my invention a shaft
extending from the neighbourhood of such arrangement of gearing and provided at

page_text: each end with discs provided with pegs or teeth or slots or holes and gearing into
or engaging with discs provided with slots or holes or pegs or teeth and formed or
mounted one upon the said arrangement of gearing and the other upon the axle or
shaft or hub of the driving wheel of the safety bicycle, all arranged employed and
operating substantially in the manner and for the purposes herein before described
in reference to the third part of my invention and illustrated by Fig. 9 of the
accompanying drawings.
4. In a safety bicycle and in conjunction with an arrangement of gearing such as
is above described in reference to the first and second parts of my invention an
arrangement of toothed gearing or friction driving apparatus employed to transmit
motion from the said arrangement of gearing to the driving wheel of the safety
bicycle and arranged and operating substantially in the manner and for the purposes
herein before described in reference to the fourth part of my invention and illustrated
by Figs. 10 and 11 of the accompanying drawings.
5. In a safety bicycle the arrangement of gearing consisting in a disc provided
with holes or slots or projecting pegs or teeth or a friction surface and mounted so
as to be incapable of revolving, a disc provided with holes or slots or projecting
pegs or teeth or a friction surface and mounted upon the hub or axle of the driving
wheel of the safety bicycle and a disc provided with projecting pegs or teeth or
slots or holes or a friction surface and mounted in or carried by a part or wheel or
chain-wheel, to which motion is transmitted from the cranks of the safety bicycle
by means of a shaft having at each end discs provided with pegs or teeth or slots
or holes or by means of an arrangement of friction driving apparatus or by means
of toothed gearing or by means of a chain or other suitable means and all arranged,
employed and operating substantially in the manner and for the purposes herein-
before described in reference to the fifth part of my invention and illustrated by
Fig. 12 of the accompanying drawings.
Dated this Sixteenth day of February 1893.
HOWARD CHEETHAM,
Manchester, Agent to the Applicant.