The Indianapolis journal. [volume] (Indianapolis [Ind.]) 1867-1904, 1895-11-25
THE LATEST BICYCLE INVENTION.
rho English Chain. which Is Ex-
pected to Revolutionixe Cycling

bicycling World.
Since the pneumatic tire no invention has
given such promise OF notwithstanding the
speed OF bicycles as the simpson lever
chain, the discovery OF an Enslishman- BY
the aid Of this cnain a tandem 2eared 10
l@ and n single geared 10 ~ are said To
have covered a quarter mile I'm 20 30 sec
onds. three f~uilongs In y 40 seconds aud a
half mile in a. as seconds. all Of which are
extraordinary times. especially when We
take into consideration that they were made.
means Is mile ia this count since it
has been proved that American riders are
a great deal faster than the Britishers.
the inventors. that his dream or success
will be realized.
be left unconsidered. The staid British
journals. even TO the conservative Wheel
ing. pronounce the time trials genuine, ana
10 judge the new invention in It's nrst stage
The Cyclist.. in summing up an exhaustive
argument. believes the invention TO be tai
lacious and unmechanicai. and TO belong 10
the same class Of inventions as the Boudard
f feSmed w sn ii,,i Rr9 gni sSe s 80 re SSel,n anq pap per-
unite In declaring the invention an unq1ali-
fed success.
Concerning the mechanism of the inven-
ton. one English journal says: The driv-
ing method. so far as the bracket wheel Ia
concerned, is plain enough TO require no
explanation. IL should be carefully noted.
however. with regard TO the back chain
pulley, that the under side of the chain
(Which engages with the bracket wheel I'm
the usual nanner) rides freely I'M the loose
ring of the grooyed back chain wheel, and
the driving Is done by the cross pins at
the top of the triangular links. which en-
gaze with the teeth on the circumference
OF the Ranges. In this regard IL Will be
seen that while the chain remains fiat the
pitch OF the top and bottom links is identi-
cal, but as soon as the chain assumes a
curve (as Il does around the back pulley
the triangular or top pitch becomes greater
than the bottom. as the apices Of the tri-
angular links are further. from. the center
of the circle round which the chain 10
pulled. BY this arrangement IL is therefore
possible 10 have a front chain. with the
teeth cut for "A given pitch. working on
10 a back chain wheel. with a greater dis
lance between the teeth. Further than this,
the proportions of the chain and wheel
are such that only the two top teeth or
the back pulley receive inpulsion. and
when pressure il applied to the pedal and
the top length of the chain dawn taut,
the links. other than the top two engaged
with the teeth OF the pinion. can be lifted
away from the periphery with the fingers.
The null is. therefore. right across the top
of the pinion. and not round "a. Hereby 81
is claimed that extra leverage Is obtained
and friction reduced. not because fewer
links are engaged. but because the pull
of the chain is across the top Of the back
pulley. so that nothing in lost by the aD-
pIicafion of power to the back of the pull
lev. on the other hand. some loss should
result i'm extra friction from the free ring
rubbing against the center of the grooved
n,flley and the under side OF tho chain.
thourb this could. no doubt. be largely
overcome by the application OF balls"