Improved Band Driving Gear for Transmitting Power.
Year: 1897

page_text: Date of Application, 12th May, 1897-Accepted, 2nd Oct., 1897
COMPLETE SPECIFICATION.
Improved Band Driving Gear for Transmitting Power.
We, ALEXANDER MENESDORFFER, of Dally Street, Northcote, in the Colony of
Victoria, Miner, and EDWIN CHARLES ELLIOTT, of No. 377 Collins Street, Melbourne,
in Victoria, as aforesaid, Sharebroker, 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 an improved band driving gear for transmitting power and
which will be useful for Cycles, Horseless Carriages, Motor Cars, and for other purposes
where such a gear can be applied. The invention consists of a light steel or other
pliable metal band pierced with holes at regular intervals and combined with pulleys
coated with India rubber or other elastic substance and having pins or teeth to gear
with the holes in the band. Said holes in the band may either be at its centre as
aforesaid or they may take the form of gaps arranged at regular intervals along its
edge or edges and gear with teeth or projections formed in the side or sides of suitable
sheaves the working surfaces of which are also coated with rubber or other elastic
substance. The metal band may either be made endless by brazing or by providing
it with suitable couplings. Again when so desired one of the rubber coated pulleys
or sheaves may be plain that is without pins or teeth and the band caused to grip
frictionally on such plain pulley by aid of one or more small pressure rolls or
sheaves.
In order that our invention may be well understood we will now describe it aided
by a reference to the accompanying sheet of drawings and in which like letters
indicate similar parts throughout.
Fig. 1 shewing a side view and Fig. 2 a plan of our gear as applied to a bicycle.
A being the pliable metal band having holes as a at regular intervals along its centre
and designed to gear with pins b projecting from the periphery of the pulleys B, and B¹
both of which are coated with India rubber C as shewn, said rubber being held in
position by rubber solution, cement or by other means.
In Fig. 3 we again shew a side view of our gear; A being the band perforated as
shewn in Fig. 2. In this instance the pulley B¹ only is furnished with the pins or
teeth b the other rubber coated pulley B being plain and combined with a rubber
coated pressure roller or sheave D which presses upon the band during its rotation.
As a further modification both rubber coated sheaves may be without pins or teeth
and the band without perforation.
The following figs. are drawn to a larger scale than those just described.
Figs. 4 and 5 shew part of the hand A the former having gaps a² arranged opposite
one another at both its edges and at equidistant positions along its whole length and
the latter shews the gaps a² arranged at intermediate positions along the edges whilst
Fig. 6 shews a section of a suitable sheave for these bands said sheaves being provided
with teeth or projections 6¹ at its sides to gear with the gaps a². This sheave is also
coated with rubber C.
It will be obvious that the gaps a² for some purposes may be in one edge only of
the band A.
Fig. 7 is part of a band A similar to that shewn in Fig. 2 and Figs. 8 and 9 show

page_text: that each working edge of the slots or holes & in the band can be strengthened by a
projecting piece a³.
Figs. 10, 11, 12 and 13 shew several means for coupling the meeting ends of the
band A. Fig. 10 shewing them secured by small bolts at or by rivets. Fig. 11 by a
hinge joint held together by hinge pin a³. Fig. 12 shews each end bent over
into a socket to receive the U shaped coupling a which is prevented from leaving its
position by the cross screw pin a' and Fig. 13 shews a coupling of the spring hook a
and eye a type.
Although we have described the pulleys as being coated with rubber over the whole
surface of their periphery we wish it understood that for some purposes we may secure
the rubber thereon in the form of pads or strips preferably around each pin b or
between the teeth or projections b'.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that
what we claim is ;-
(1) An. improved band driving gear consisting of a pliable metal band either
perforated at its centre or gapped at its edge or edges and provided with projecting
pieces as a combined with pulleys provided with pins or teeth and having their
peripheries coated or lined with India rubber or other similar elastic substance
substantially as herein described and shewn in Figs. 1 and 2 of the drawings.
(2) An improved band driving gear consisting of a pliable metal band either
perforated or gapped combined with a rubber coated pulley as B a rubber coated
pressure-sheave as D and a tooth and rubber coated pulley as B¹ substantially as herein
described and shewn in Fig. 3 of the drawings.
(3) An improved band driving gear consisting of a pliable metal band unperforated
combined with rubber coated flange-pulleys or sheaves substantially as herein
described.
(4) In an improved band driving gear the several forms of coupling for ends of
band substantially as herein described and as shewn in Figs. 10 to 13 of the drawings
Dadth: 304LL JCM 1007