Certain Improvements in Driving Chains.
Year: 1895

page_text: Date of Application, 11th Oct., 1895
Complete Specification Left, 4th Aug., 1896-Accepted, 12th Sept., 1895
PROVISIONAL SPECIFICATION.
Certain Improvements in Driving Chains.
We. PERRY & Co. LIMITED, of 36, Lancaster Street, in the City of
Birmingham, Manufacturers, and FRED OLDFIELD, of 35 pester Street,
aforesaid, Works Manager do hereby declare the nature of this invention to be
as follows:-
This invention consists of the hereindescribed improvements in driving chains of
the kind known as roller chains which are used in bicycles and other velocipedes
and in machinery of various kinds for transmitting rotary motion and power.
Our improved driving chain consists of pairs of side plates and hardened steel
or other rollers arranged alternately the said rollers being situated between the
side plates and serving to link the ends of the adjacent pairs of side plates together
by the ends of one or both of the side plates in each pair having projections formed
on the inner face or inner faces which fit in and engage with the eyes of the
rollers.
The two side plates forming each pair are connected together by a central cross
stud or pin which is or may be shouldered down and rivetted at the ends. Or
instead of the cross stud or pin a screw may be used as is necessary for connecting
the ends of the chain together. The catie cul of the adincent pairs of side
plates abut together so as to allow of the side plates turning as when the chain is
passing round the wheels. Or for the same purpose the ends of the links may be
rounded.
In a modification of this invention the said projections on the inner faces of the
side plates are dispensed with and instead thereof the two side plates in each pair
are at their ends connected together by two cross studs or pins which pass through
the rollers these studs or pins being shaped so as to fit and take a proper bearing
against the insides of the rollers.
In a further modification of this invention the said projections on the inner faces
of the side plates are retained but instead of the side plates being secured together
by a rivet or cross stud pin or screw passing through the side plates outside the
rollers as in the arrangement first hereindescribed, a rivet cross pin stud or screw
is arranged to pass through the centre of each roller the extreme ends of the side
plates being hollowed out to fit against the said rivets studs or screws.
Dated this 10th day of October 1895.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.
Certain Improvements in Driving Chains.
We PERRY & Co. LTD. of 36 Lancaster Street, in the City of Birmingham
Manufacturers of Steel Pens and Cycle Components, and FRED OLDFIELD of
36 Lancaster Street aforesaid Works Manager 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 consists of the bereindescribed improvements in driving chains of

page_text: the kind known as roller chains which are used in bicycles and other velocipedes
and in machinery of various kinds for transmitting rotary power and motion.
We now proceed to describe with reference to the accompanying drawings the
manner in which this invention is constructed and used.
Figures 1, 4 & 6. are plans of the links.
Figures 2, 3 & 5 are front views of the links.
Our improved driving chain consists of pairs of side plates a and hardened steel
or other rollers d arranged alternately the said rollers being situated between the
side plates and serving to link the ends of the adjacent pairs of side plates together
by the ends of one or both of the said plates in each pair having projections b
formed on the inner face or inner faces which fit in and engage with the eyes of
the rollers (Fig. 6).
The two side plates forming each pair are connected together by a central cross
stud or pin c. which is or may he shouldered down and rivetted at the end. Or
instead of the cross stud or in a screw may be used as is necessary for connecting
the ends of the chain together. The extreme ends of the adjacent pairs of side
plates but together (Fig. 2) so as to allow of the side plates furning as when the
chain is passing round the wheels. Or for the same purpose the ends of the links
may be rounded.
In a modification of this invention the said projections on the inner faces of the
side plates are dispensed with (Fig. 4) and instead thereof the side plates in
each pair are at their ends connected together by two cross stils or pins ( Fig. 3.)
which pass through the roller (Fig. 4) these studs or pins being shaped so as to fit
and take a proper bearing against the insides of the roliers.
In a further modification of this invention the said projections 4, on the inner
faces of the side plates are retained. The side plates are secured together either
hy a rivet or cross stud, pin or screw passing through the side plates outsile the
rollers as in the arrangement first hereindescribed or a rivet, cross pin, stud or
screw is arranged to pass through the centre of each roller Fig. the extreme
ends of the side plates being hollowed out to fit against the said rivets, stuls or
screws.
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. The combination of projections on the inner surface of the side plates with
the roller.
2. The combination of rivets in place of projections and the combination of one
rivet with projections.
3. The combination of joining the side plates by a central cross stud or pin in
conjunction with the projections rivets and rollers.
Dated this let day of August 1896.
TEKKINUMIT
COMPAN
TERRY
J. W. MILLIGAN,
Director and Secretary.
FRED OLDFIELD,
Works Manager.