Improvements in Chains made of Links, whether Roller or Block Chains or other Chains of Kindred Nature used for Driving or otherwise.
Year: 1899

page_text: Date of Application, 13th Oct., 1899
in Laft 12th Luty 1000 contad 12th Nov
14611
PROVISIONAL SPECIFICATION.
Improvements in Chains made of Links, whether Roller or Block
Chains or other Chains of Kindred Nature used for Driving or
otherwise.
I, GEORGE EDWARD REES, of Harwood Vicarage, Bolton, Clerk in Holy Orders,
do hereby declare the nature of this invention to be as follows:-
Whereas, assuming a block chain to pass round a driving wheel and a driven
wheel set upon parallel horizontal axes, on the inner face of the chain there will
be concavity and on the outer face convexity-and whereas two adjacent side-
links need to have great freedom of play on the chain's concave,side, but scarcely.
need any freedom of play on the chain's convex side-and whereas it is desirable
to avoid the propagation of undulatory back-lash in S-like curves along the chain
and whereas each side-link may be fashioned in the crude form of a semicircle
or a segment of a circle, by the use of which form two adjacent side-links would
have free play on the concave side of the chain where their curved edges recede
from one another but (if on the convex side of the chain their edges correspond-
ing to the diameter or chord be placed in closest proximity) the chain would be
prevented from sensibly taking a double curvature however much jolted. Now, I
take one of the many patterns of side-link which may be developed from this
crude form without abandoning its peculiar advantages, and in particular I take
for example a side-link which has, viewed in elevation, on the concave side of
the chain one of the usual forms, and which has on the convex side of the
chain an approximately rectilinear outline very slightly rounded off or tapered
at each end (with the object of avoiding a sharp angle and of minimising there-
by friction or binding) two adjacent side-links being so placed that they will
have closest proximity (and practical contact when remote from both wheels) at
a point very slightly within the outer or convex face of the chain. In roller-
chains I adopt a similar device in regard to either the inner or the outer side-
links, according to the type of roller-chain involved. And in every form of
chain capable of its application I adopt the like device with the same object.
1
1011
Antahon
1000
COMPLETE SPECIFICATION.
Improvements in Chains made of Links, whether Roller or Block
Chains or other Chains of Kindred Nature used for Driving or
otherwise.
I, GEORGE EDWARD REES, of Harwood Vicarage, Bolton, Clerk in Holy Orders,
do hereby declare the nature of this invention and in what manner the same is
Improvements in Chains made of Links, whether Roller or Block
Chains or other Chains of Kindred Nature used for Driving or
otherwise.
I, GEORGE EDWARD REES, of Harwood Vicarage, Bolton, Clerk in Holy Orders,
do hereby declare the nature of this invention and in what manner the same is

page_text: to be performed, to be particularly described and ascertained in and by the
following statement:-
Whereas, assuming a block chain to pass round a driving wheel and a driven
wheel set upon parallel horizontal axes, on the inner face of the chain there
will be concavity and on the outer face convexity and whereas two adjacent
side-links need to have great freedom of play on the chain's concave side, but
scarcely need any freedom of play on the chain's convex side-and whereas it
is desirable to avoid the propagation of undulatory back-lash in S-like curves
along the chain-and whereas each side-link may be fashioned in the crude form
of a semi-circle or a segment of a circle by the use of which form two adjacent
side-links would have free play on the concave side of the chain where their
curved edges recede from one another but (if on the convex side of the chain their
edges corresponding to the diameter or chord be placed in closest proximity)
the chain would be prevented from sensibly taking a double curvature, however
much jolted:-
Now, I take one of the many patterns of side-link which may be developed
from this crude form without abandoning its peculiar advantages, and in par-
ticular I take for example a side-link which has viewed in elevation, on the
concave side of the chain one of the usual forms, and which has on the convex
side, of the chain an approximately rectilinear outline very slightly rounded off
or tapered at each end (with the object of avoiding a sharp angle and of mini-
mising thereby friction or binding) two adjacent side-links being so placed that
they will have closest proximity (and practical contact when remote from both
wheels) at a point very slightly within the outer or convex face of the chain.
In roller chains I adopt a similar device in regard to either the inner or the
outer side-links, according to the type of roller chain involved.
And in every
form of chain capable of its application I adopt the like device with the same
object.
In the drawing A B C D, E F G H are the adjacent parts of contiguous links
of a block chain. The links are so shaped that they can be bent freely so as to
approach each other towards C G, but owing to their shape they cannot be so bent
towards B F.
Thus the whole chain formed by similar links will tend to remain concave in
every part of it on its concave side, and convex, or at worst rectilinear, on its
convex side.
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:-
An improvement in the shape of the sidelinks of driving chains by giving them
closely adjusted and approximately square shoulders on the side remote from
the wheels the chains engage with, whereby such chains are prevented from
sensibly taking a curvature contrary to the normal curvature which is due to
engagement with the wheels on which they run.
Dotad 12th T..1.. 1000