Improvements in Cycles.
Year: 1892

page_text: Date of Application, 13th Oct., 1892
Complete Specification Left, 13th July, 1893-Accepted, 26th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in Cycles.
We WILLIAM BOWN, 308 Summer Lane Birmingham in the County of
Warwick, Manufacturer and JOHN MUIR, 90 Lodge Road, Hockley, Birmingham
aforesaid, Cycle Maker do hereby declare the nature of this invention to be as
follows:-
This invention has reference to geared cycle hubs and is specially applicable to
ordinary cycles, the object of which is to increase the revolutions of the driving
wheel without increasing the revolutions of the pedal cranks. The axle of the
wheel passes through the ordinary bearings which are connected to the front fork of
the machine. Secured to the said axle (but inside the flange of the hub, which
said flange is made large enough for that purpose) is a cog wheel which forms part
of a train of gear wheels. The said train of gear wheels consist of the centre cog
wheel which is fastened onto the axle of the wheel. Gearing into the said centre
cog wheel is a smaller cog wheel working on an axis secured to the inner face of a
stationary disc which forms part of the hub flange, also working on the same axis
is another cog wheel of a larger diameter which gears into a cog wheel formed out
of or connected to the opposite inside face of the hub flange by which means the
said hub is caused to revolve. Instead of having only one set of wheels working
on an axis secured to the inner face of a stationary disc which forms part of the
hub flange, we may if desired have two or more sets of wheels working on separate
axes in a similar manner.
Dated this 19th day of October 1892
WILLIAM BOWN.
JOHN MUIR.
COMPLETE SPECIFICATION.
Improvements in Cycles.
We, WILLIAM BOWN, 308 Summer Lane, Birmingham in the County of
Warwick, Manufacturer and JOHN MUIR 90, Lodge Road, Hockley, Birmingham
aforesaid, Cycle Maker 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 geared cycle hubs and is specially applicable to
ordinary cycles the object of which is to increase the revolutions of the driving
wheel without increasing the revolutions of the pedal cranks.
In order that our invention may be clearly understood we have annexed the
accompanying sheet of drawings which illustrates the same.
Fig. 1 is sectional elevation of our geared hub; and
Fig. 2 is end view of same taken through the line a-b.
A is the axle of the wheel which passes through the ordinary bearings B, the
said bearings B are connected to the front fork ends of the machine in the ordinary
manner. Secured to the said axle A (but inside the flange C of the hub, which
said flange C is made large enough for that purpose) is a cog wheel D which gears
into two other smaller cog wheels E and F working on the axes G and H secured
to the inner face of the stationary disc I which forms part of the hub flange C,
also working on the same axes G and H and forming part of or connected to the
said cog wheels E and F are two other cog wheels J and K of a larger diameter
than the said cog wheels E and F. The said cog wheels J and K gear with the
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page_text: C
cog wheel L formed out of or connected to the opposite inside face c of the hub
flange C, by which means the said hub is caused to revolve.
The modus operandi is as follows:-
When the axle A is caused to revolve the cog wheel D revolves also, at the same
time causing the cog wheels E and F which are in gear with the said cog wheel D
to revolve. When the said cog wheels E and F revolve the cog wheels J and K
which form part of or are connected to the said cog wheels E and F will revolve
also, and as the said cog wheels J and K are in gear with the cog wheel L, which
said cog wheel L forms part of or is connected to the inside face c of the hub
flange it will be easily understood that the said hub is thereby caused to revolve
at a quicker rate than the axle A.
We may if desired dispense with the two cog wheels F and K and employ the
cog wheels E and J only.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
Firstly. In a velocipede the means substantially as herein shewn and described
for increasing the revolutions of the hub without increasing the revolutions of
the axle.
Secondly. Enclosing the train of gear wheels inside the hub flange in the manner
substantially as herein shewn and described.
Dated this 12th day of July 1893.
WILLIAM BOWN.
JOHN MUIR.