Year: 1894

page_text: Date of Application, 17th Mar., 1894
Complete Specification Left, 15th Dec., 1894-Accepted, 9th Feb., 1895
I, GEORGE ALFRED POOLE, of Askern, near Doncaster, in the County of
York, Clergyman do hereby declare the nature of this invention to be as
follows:-
Ordinary bicycle or velocipede wheels have a disc of transparent celluloid or
similar transparent material, fixed upon each side, so as to enclose the spokes.
The resistance of the air upon the spokes, when rapidly revolved, is thus
overcome.
The chain gearing is also enclosed in a case made of transparent celluloid or
similar transparent material.
Dated this 16th day of March 1801
I, GEORGE ALFRED POOLE, of Askern, near Doncaster, in the County of
York, Clergyman, 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:-
Ordinary bicycle or velocipede wheels have a disc of transparent celluloid or
similar transparent material fixed upon each side, so as to enclose the spokes.
The resistance of the air upon the spokes when rapidly revolved is thus overcome.
The chain gearing is also enclosed in a case made of transparent celluloid or similar
transparent material.
The discs to be applied to bicycle wheels, are cut out of sheets of clear
transparent celluloid or other transparent material, and have a hole in the centre
about two inches in diameter, so that they can pass over the axle, and fit close to
the spokes of the wheel, the diameter of the discs being regulated by the size of
the wheel to be covered, so that the outer edges of the discs press against the
metal rim of the wheel, when the opposite discs are laced together, by thin
wire passed through eyelet holes provided for the purpose. The eyelet holes
are placed at regular distances apart, and about an inch and a half from the
circumference.
The chain gear case is made in the usual oblong form, which is too well known
to need illustrating. Each flat side of the case is formed out of a sheet of
transparent celluloid or other transparent material, the piece of celluloid being
moulded to shape under pressure, and the edge turned over all round so as to form
a complete rim about one inch wide. The flat side of the case nearest the wheel,
is made one-eighth of an inch smaller than the other side, so that, when the two
sides are pressed together, the rim of one side fits closely inside the rim of the
other. In this position the two rims are cemented together, and at a later stage
of manufacture, a few rivets may be used to make the joint quite secure.
The
next step is to bore holes in the flat sides of the case, where the axles of the
Price 8d]

page_text: respective chain wheels will pass through when the case is mounted. The case is
then cut in a horizontal line passing through the centres of the holes already bored,
dividing the flat sides into two equal parts, the cutting lines on each side being
continued round the ends of the case until they meet. This divides the case into
what are now called the upper and lower half, and to ensure the edges meeting
truly afterwards, guiding strips of white metal are attached to the edge of the
lower half. The gear-case is fixed in position upon a modern bicycle, by means of
two small bolts passing through the case, and also through a small metal plate
secured closely underneath the tie-rod which stretches from the axle of one chain
wheel to the axle of the other. The top half of the case which shuts down
upon the other half is secured in its place, by a small thumb-screw passing
through the rim at each end of the case, and can readily be removed when
required.
Another method of making a gear case, of the same shape, and opening in a
similar manner, is as follows. The top half of the case is moulded in one piece,
without any joint at the rim, the piece of celluloid being bent over the edge of the
moulding board, (which is the exact size and shape of the interior of a finished
case) and extending half way down each side; the lower half is also moulded under
pressure in a similar manner, so that the edge of the material is brought up each
side, until it meets the edge of the upper half. The case is then finished in the
same way as that previously described.
A more simple method of making a gear-case, is to form only part of it out of
transparent material, and to use leather, metal, or papier-maché for the remaining
parts.
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. The manufacture and use of transparent discs to be attached to velocipede
wheels.
2. The manufacture and use of chain-gear cases for velocipedes, such gear
cases being made wholly or in part, of transparent celluloid or similar transparent
material.
Dated this 15th day of December 1894.
G. ALFRED POOLE,
Applicant.