Improvements in and relating to Cycles.
Year: 1897

page_text: Date of Application, 24th Aug., 1897-Accepted, 19th Mar., 1898
GOLDEN MITICATION.
Improvements in and relating to Cycles.
I, HERMANN DANIEL, Merchant, of 12 Wilhelm Strasse, Berlin, in the Empire
of Germany, 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 cycles, and more especially to safety bicycles, and has
for its object to readily and economically produce a machine which shall be light,
durable, and capable of easy repair.
The invention is illustrated in the accompanying sheet of drawings, in which
Figure 1 represents in front elevation a safety bicycle having my improvements
embodied in its construction, while Figure 2 is a plan corresponding thereto, but
of a tandem machine. Figures 3 and 4 illustrate in front elevation and plan the
means I employ for mounting the pedal crank axle and rear wheel axle bearings.
Figure 5 is an enlarged plan of a driving band made according to my invention,
while Figures 6 and 7 are respectively a complete sectional elevation of a wheel
and pneumatic tyre, and an enlarged section of a pneumatic tyre made according
to my invention.
In carrying my invention into effect I provide the frame of an oval shape in
two symmetrical parts a b, and from best steel, each of the constituent parts of
the frame having a rectangular cross section, and. being connected to the other
by means of stays, so that a certain determined space is provided between each
part in which the rear wheel may be mounted, the pedal crank axle, the front
wheel steering socket, the rear wheel axle, and the saddle support being each
mounted upon and between the constituent parts a and b of the frame. The rear
wheel is mounted upon its spindle in ball bearings, and its spindle is held on either
side by means of a bearing block k of rectangular form, each of which bearing
blocks are embraced within a correspondingly formed slot or recess provided
in each of the frame parts a b, a vertical recess of V shape being provided upon
either side of the recess in the frame parts into which the bearing block kor
lateral projections therefrom may enter, the blocks being rigidly secured to the
frame parts by means of a cross bolt 7 as illustrated in Figures 3 and 4.
The pedal crank axle is similarly mounted in bearing blocks k, and secured to
the frame.
An endless band c is provided for transmitting motion from the pedal crank
axle to the rear wheel axle through toothed wheels. The endless band c, which
s preferably of steel and cut from a thin seamless tube is provided with holes d
which are punched out, but which has the punched lip upturned slightly from
he surface of the band to form a springing edge, which prevents cutting the
ip being suitably shortened, so as not to project to a great degree above the sur-.
ace of the band. The teeth of the gear wheels are suitably formed of short height
o work upon the perforated band.
Each of the wheels are constructed of two plates ef, bolted or rivetted together,
nd provided with radial apertures and intermediate radial ribs h, the latter
eing pressed out from the plates or otherwise formed, so as to provide adequate

page_text: radial or vertical resistance. The rim may be made in any suitable form for retaining
the outer cover of the tyre such as illustrated. An outer rim i which is hollow and
made from thin weldless steel, is, however, provided for the protection of the
pneumatic tyre, and an outer rubber tread is provided upon its periphery in a
bed formed for the purpose so as to avoid jar or noise by direct contact of the
exterior metallic rim with the ground. The outer rim has its edges directed
outwardly in the manner illustrated in Figures 6 and 7 of the drawings, and thus
provides for the compression of the pneumatic tyre.
It will be seen that a machine made as herein before described can be
economically constructed, and would be easy of repair, and durable in use.
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 cycles a structure of frame consisting of two symmetrical parts of
rectangular section connected together by stays between and upon which parts.
the rear wheel axle, the pedal crank axle, the saddle support and steering head
socket are mounted, substantially as herein before described.
2.In cycles a wheel consisting of two dises provided with radial apertures
and radial ribs substantially as hereinbefore described and as illustrated.
3.In cycles an endless steel band for use in the transmission of motion having
perforations and the perforated lips upturned and shortened for the purpose of
providing a springing edge substantially as described.
4. In cycles a wheel tyre having a protective hollow outer cover or rim of
thin steel, and a further exterior rubber tyre or tread substantially as and for
the purpose herein before described.
5. Improvements in and relating to cycles substantially as and for the purposes
herein before described and as illustrated in the accompanying drawings.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., &
13, Temple Street, Birmingham, Agents for the Applicant.