Improvements in Driving Gear for Bicycles, Tricycles, and other Machines.
Year: 1893

page_text: Date of Application, 13th Mar., 1893
Complete Specification Left, 5th June, 1893-Accepted. 29th July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Driving Gear for Bicycles, Tricycles, and other
Machines.
JOHN STEEL DIXON SHANKS Engineer 42 Brougham Street Belfast and
ROBERT JAMES CARSON Timber Merchant 30 Talbot Street Belfast do hereby
declare the nature of this invention to be as follows:-
To provide a strap or band which cannot slip when transmitting power from one
drum or pulley to another and this is effected by fitting the driver drum or pulley
and the driver with teeth or pins cast or screwed into or in any other suitable way
secured to the rims of said drums radially.
The strap or band consists of one or more strips of steel or other suitable
flexible material formed into an endless band by brazing rivetting or otherwise
joining ends together.
The strap or band to be perforated at suitable distances along its length to
take the teeth of the pins of the drums or pulleys. The perforations to be fitted
with taper ferrules having a flange on one side and the other to be rivetted over
forming an "eyelett" and thus providing a means against wear at these points in
the strap. When more than one layer or strip of material is used for the band
then the eyeletts form the connection between the different layers used; and
flexibility with strength is the result; and combining a slipless band transmitter of
power.
The ferules being oblong transversely so as to present a broad wearing surface.
1000
COMPLETE SPECIFICATION.
Improvements in Driving Gear for Bicycles, Tricycles, and other
Machines.
JOHN STEEL DIXON SHANKS, Engineer, 42 Brougham Street, Belfast, and
ROBERT JAMES CARSON, Timber Merchant, 30 Talbot Street, Belfast 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 :-
We make a strap or band of one or more strips of steel or other suitable
material, having holes bored or punched at fixed distances along its length; the
holes being fitted with ferrules or eyeletts of steel or other suitable material
rivetted over on both sides of strap to keep the strips together and the ferrules in
position. We prefer to taper the eyelets from the side in contact with drums or
pulleys hereinafter described. The band or strap may be made endless by brazing
or rivetting, but we prefer to join the ends by overlapping the ends of strip or
strips and using a ferrule, above described, as a rivet.
There may be one or more joints in the length of strap; the joints serving to
keep the strap in line with the drums or pulleys to be hereinafter described.
The strap may be made up of more than one band the ferrules serving to connect
the layers at the perforations as before described; or the band may be in a coil
and the coils or layers fastened together by the ferrules.
The drums or pulleys hereinbefore mentioned we make truly cylindrical on the
rim or periphery of same; and fit same with steel or other metallic pins, cast on or

page_text: screwed into the rim radially. These pins are placed so as to fit freely into the
holes or ferrules of strap or band when the drums or pulleys are revolving and the
strap or band running.
The pins we make pointed or rounded on the outer ends for the purpose of more
free entry to the ferrules.
The annexed drawings explain arrangement of combination, wherein A is the
drum, B pulley, C the strap or band, D the ferrules or eyelets, E the pins.
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
1. The combination of one or more thin strips of steel or other suitable
material lapped or coiled perforated and ferruled as described and for purpose set
forth herein.
2. The combination of a strap or band and ferrules with drums or pulleys fitted
with pins or projections as described and for purpose set forth.
Dated this 3rd day of June 1893.
JOHN STEEL DIXON SHANKS.
ROBERT JAMES CARSON.