Improvements in and relating to Chain Gearing.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Chain Gearing.
I, ALFRED CECIL WRIGHT, trading as James Warne, of 56 & 57, Watery Lane,
in the City of Birmingham, Manufacturer, do hereby declare the nature of this
invention to be as follows:-
This invention consists of improvements in and relating to chain gearing for
cycles and for other purposes, my object being to construct light and efficient
chains from a combination of simple links that can be produced and put together
at small cost and in such a manner that they will run with smoothness and but
little friction upon their wheels.
In the application of my invention I stamp or pierce the link plates from
sheet steel or other suitable metal. The whole of the link plates in the chain
are preferably exactly similar to each other and have their rounded ends pro-
jecting below the body of the plates which I prefer to make of a curved configura-
tion. The plates are disposed in pairs to form links, one complete link being
preferably made up from two plates, and such links are arranged alternately as
inner and outer, the ends of the plates of the inner links being inserted and
secured by a rivet between the plates of the outer links.
Each of the chain wheels for working in conjunction with my improved chain
has grooves or depressions formed in its periphery at the required pitch to receive
the projecting ends of the links hereinbefore described, the grooves being of such
a form that the link projections will readily gear with the same.
With my improved chain and wheels the gearing or driving contact between
the links and the wheel is effected upon the underside of such links only, no
teeth or projections being provided upon the wheel for entering between the
links.
T
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicant.
Improvements in and relating to Chain Gearing.
I, ALFRED CECIL WRIGHT, trading as James Warne, of 56 & 57, Watery Lane,
in the City of Birmingham, Manufacturer, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particluarly
described and ascertained in and by the following statement:
This invention consists of improvements in and relating to chain gearing for
cycles and for like purposes, my object being to construct light and efficient
D.
o

page_text: chains from a combination of simple links that can be produced and put together
at small cost, and in such a manner that they will run with smoothness and but
little friction upon their specially formed wheels.
In the accompanying sheet of explanatory drawings to be hereinafter referred
to.-
Figure 1 is a side elevation and Figure 2 an end elevation of one form of my
improved chain. Figure 3 is an end section on the line a b Figure 1.
Figure 4 is a sectional elevation of a portion of a chain wheel with the chain
working thereon.
Figure 5 is a side elevation representing a modified form of my chain, whilst
Figure 6 is a sectional end view of such chain with a portion of a wheel to suit
same.
In the application of my invention I stamp or pierce the link plates A from
sheet steel or other suitable metal. The whole of the link plates in the chain
are preferable exactly similar to each other and have their rounded ends pro-
jecting below the body of the plates which I prefer to make of a curved configura-
tion. The plates are disposed in pairs to form links, and such links are arranged
alternately as inner and outer, the ends of the plates of the inner links being in-
serted and secured by rivets between the plates of the outer links. In the illus-
trations the outer links are shown as made up fro. two plates and the inner links
from three plates but I do not limit myself to such numbers.
Each of the chain wheels for working in conjunction with my improved chain
has grooves or depressions formed in its periphery at the required pitch to receive
the projecting ends of the links hereinbcfore described, the grooves being of such
form that the link projections will readily gear with the same.
For the chain as shown at Figures 1 to 4 inclusive I provide side flanges on
the chain wheels to prevent displacement of the chain from the wheels when in
service, but in the type shown at Figures 5 and 6 no such flanges are required
as the outer links have projections as A¹ from the lower side.
With my improved chain and wheels the gearing or driving contact between
the links and the wheel is effected upon the underside of such links only, no
teeth or projections being provided upon the wheel for entering between the
links.
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:-
The improved chain gearing for cycles and for like purposes constructed and
arranged substantially as described and as illustrated.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agentis for the Applicant.