Year: 1896

page_text: Figure 3 is a side view of a modified arrangement having wires crossing one
another
Figure 4 illustrates a method of lap jointing the extremities of the band.
Figures 5 and 6 are respectively a side and an edge view of a wheel suitable
for my improved gear, the former figure showing the band in position thereon.
a is the band, which is made preferably of a single flat strip of metal, say steel,
as thin as possible consistent with the necessary tensile strength. 6 is the wire
which is wound around the said band, which latter is provided with notches or
recesses a¹ in its edges to receive the said wire and so hold the same firmly in
position on the band. c is a wheel suitable for use with the band shown in
Figures 1 and 2, this wheel having small cogs or teeth e to engage between the
coils of the wire b, and having also flanges to keep the band a on the wheel. It
will be obvious that in a driving gear, two such wheels are employed one acting as
the driving wheel and the other receiving its motion therefrom through the medium
of the band, after the manner of the sprocket wheel and pinion of an ordinary
chain gear. Moreover instead of the wheel having teeth or cogs it might if desired
be provided with recesses to receive the wire coils, or it might itself have a wire
or wires lapped around it to engage those on the band.
As shown in Figures 1 and 2, a single wire is lapped around the band, this wire
being carried across the band (Figure 1) at right angles thereto on the side which
comes next the wheels while the inclined part of each coil comes on the opposite
side (Figure 2) of the band.
As shown in Figure 3 however two separate wires are employed which cross
or overlap in the middle of the band such crossing or overlapping occurring on
both sides of the latter.
The ends of the band are advantageously connected in the manner shown in
Figure 4, that is to say they are caused to overlap and the notches or recesses a¹
in each are made to coincide. The wire b is then wound around the overlapped
ends, and engaging in the said notches, binds the ends tightly together and forms
a eliable joint preventing any possibility of their shifting relatively to one
another.
In reference to the arrangement shown in Figure 3, the action is similar to
that of the band hereinbefore described but the teeth or the recess on the wheels
require to be shaped to correspond to the overlapping portions of the wires. My
improved driving gear is much lighter cheaper and simpler than the ordinary
chain driving gears and the absence of the numerous joints of an ordinary driving
chain obviates or greatly diminishes liability to stretching or slackening.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is:
1. A driving gear, the band of which is formed of a thin flexible strip of steel
or other suitable material around which wire is wound, substantially as and for
the purpose described.
2. A band for a driving gear consisting of a strip or strips of metal having
notches the edges to receive a wire or wires, the join or joins being formed by
overlapping the adjacent ends and then winding the wire around them,
substantially as described.
3 My improved driving gear constructed substantially as hereinbefore described.
Dated this 9th day of August 1897.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: Date of Application, 9th Nov., 1896
Complete Specification Left, 9th Aug., 1897-Accepted, 18th Sept., 1897
PROVISIONAL SPECIFICATION.
An Improved Band Driving Mechanism for Cycles and other
Machinery.
WILLIAM BEDFORD DOWNEY, Mayville, Hendon, Middlesex, Draughtsman, do
hereby declare the nature of my invention for An Improved Driving Mechanism
for Cycles & other Machinery to be as follows:-
I take a band of Steel or other Suitable Material or Materials which may be
of equal width or be waved or otherwise shaped at the edges & the edges may be
serrated and Steel wire or other suitable material or Materials may be wound
round the band or lines may be scored or pressed across the band. The wheels for
the bands aforesaid may have flat rims with lines scored to correspond with band
suitably also they may be made with suitably shaped raised rims to suit band.
Both wheels & bands may be covererd with rubber or other suitable material or
the wheels may be made like pin wheels.
Dated this 9th day of November 1896.
WILLIAM BEDFORD DOWNEY.
An Improved Band Driving Mechanism for Cycles and other
Machinery.
I, WILLIAM BEDFORD DOWNEY, of Mayville, Hendon, in the County of Middlesex,
Draughtsman, 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 relates to driving gear for cycles and for machinery generally
and has reference to a form of driving gear intended as a substitute, more
particularly, for the chain driving gear of cycles.
According to the said invention instead of the ordinary driving chain, a band
consisting of a thin flexible strip of steel or other suitable material or materials
is employed. In order to give the necessary adhesion of this band to the rim of
the wheels or pinions over which it passes, I prefer to provide the said band with
a wire or wires wound around it while the wheel rims may be provided with short
teeth or shallow recesses to engage the coils of such wire.
In order that the invention may be clearly understood and readily carried into
effect I will proceed to describe the same by aid of the accompanying drawings
in which
Figures 1 and 2 are views of the opposite sides of a driving band having wire
coiled around the same.