Year: 1886

page_text: Date of Application, 19th Nov., 1886
Complete Left, 15th Aug., 1887.
Complete Accepted, 7th Oct., 1887
We, JOHN ARTHUR YEADON, of 4 Albion Place, and ROBERT MIDDLETON, of
Sheepscar Foundry, Meanwood Road, both of Leeds, in the County of York, and
both Engineers, do hereby declare the nature of this invention to be as follows:-
This invention relates, mainly, to that class of chains which are generally built
up from separate castings, and has reference to improvements in arranging and
securing the hinge-pins by which the links are attached to one another; the hinges
being formed by entire eyes and not by hooks or open ends as is usual in this class
of chain.
The object of our invention is to enable a chain of a strong description to be simply
and inexpensively made and put together; and also easily taken apart when required.
As usual in this class of chain the taking from together can only be accomplished
when the adjacent links are bent back out of their ordinary working positions.
One way of making this chain is of square-cornered C shaped links, the open ends
of one link spanning across the solid end of the next; each end being suitably shaped
to form the eyes of the hinges. Through the holes in the eyes thus brought together
side by side it would be possible to thrust a round pin or stud. But such a hinge-
pin would of course easily work out. To prevent this, which is almost the essence of
the invention, we leave on each such hinge-pin a portion of a collar, or collars, either
round or square, much cut away;-in fact, so much cut away, that it will be better to
speak of the hinge-pin as having a projecting key. This key extends along that part
of the hinge-pin which when inserted will lie inside the solid eye of the link. In this
part of the link a corresponding keyway, or recess, is formed to receive the hinge-
pin and its projecting key.
It will be seen that if the corresponding keyway which must be made in one of the
holes of the open side eyes, in order to pass the key through into the central portion,
be made in the position taken by the links when they are bent backwards at right
angles, or thereabouts, and the hinge-pin be then and there put in-all the keyways
being in a line with one another-then, when the links are extended into working

page_text: position the pin will be prevented from working out by the fact that the key in the
central part of the link can find no keyway in its ordinary working range in the out-
side link. To take the chain from together each link has to be bent backwards into
a right-angled position, or thereabouts, until the keyways are again in line, when the
hinge-pin may be thrust out from the other side.
Several modifications in the hinge-pins and their keys, their positions and lengths,
may be made, but all require to bend backwards out of their working positions before
they can be detached.
We have described the key as a portion of a collar the remainder of which has been
cut away; bearing this in mind it is plainly seen that modifications may easily be
made; a simple one, by leaving these collar ends at the extremities of the pins or
studs and slotting out the eyes of certain loose side links so that they may be slipped
over them when bent backwards, say at right angles or thereabouts.
Any of the usual attachments for buckets and other such appendages can be
arranged on any of the links.
We prefer to arrange our chain so that the centre space of each link is left free for
the tooth of the driving wheel.
Dated this Eighteenth day of November 1886.
COMPLETE SPECIFICATION.
Improvements in Chain Belts for Elevating, Carrying, or Driving
Purposes.
We, JOHN ARTHUR YEADON, of 4 Albion Place, and ROBERT MIDDLETON, of
Sheepscar Foundry, Meanwood Road both of Leeds, in the County of York, and
both Engineers, 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 relates, mainly, to that class of chains which are generally built up
from separate castings, and has reference to improvements in arranging and securing
the hinge-pin by which the links are attached to one another; the hinges being
formed by entire eyes and not by hooks or open ends as is usual in this class
of chain.
The object of our invention is to enable a chain of a strong description to be simply

page_text: and inexpensively made and put together; and also easily taken apart when required.
As usual in this class of chain the taking from together can only be accomplished
when the adjacent links are bent back out of their ordinary working positions.
In order to fully describe our invention we have annexed two sheets of drawings,
in which, as far as possible, the same letters refer to the same parts or their equivalents
in all the figures. Fig. 1. is a plan of part of a chain. Fig. 2. is a side elevation of
the same, and Fig. 3. is section through the solid end of the link.
One way of making this chain is of square-cornered C shaped links, the open
ends A A. of one link spanning across the solid end B. of the next; each end being
suitably shaped to form the eyes of the hinges. Through the holes in the eyes thus
brought together side by side it would be possible to thrust a round pin or stud. But
such a hinge-pin would of course easily work out. To prevent this, which is almost
the essence of the invention, we leave on each such hinge-pin C, a portion of a collar,
or collars, either round or square; much cut away;-in fact, so much cut away, that
it will be better to speak of the hinge-pin as having a projecting key. This key,
see D D D. on the detached views of CCC. extends along that part of the hinge-pin
which when inserted will lie inside the solid eye B of the link. In this part of the
link a corresponding keyway or recess D' is formed to receive the hinge-pin and its
projecting key as shown.
It will be seen that if the corresponding keyway-which must be made in one of
the holes of the open side eyes-see E. in order to pass the key through into the
central portion-be made in the links when they are bent backwards at right angles,
or thereabouts, and the hinge-pin be then and there put in-all the keyways being in
true line with one another then, when the links are extended into working position
the pin will be prevented from working out by the fact that the key in the central
part of the link can find no keyway in its ordinary working range in the outside link.
To take the chain from together each link has to be bent backwards into a right
angled position or thereabouts, until the keyways are again in line, when the hinge-
pin may be thrust out from the other side.
Several modifications in the hinge-pins and their keys, their positions and lengths,
may be made, but all require to bend backwards out of their working positions before
they can be detached.
In the three pins C. shown in plan, a different arrangement of key is drawn in each
case; the short key or feather X-with one keyway, E. only-in one side link, is the
arrangement to which we attach most importance-as being the easiest to make
and fit.
We have described the key as a portion of a collar the remainder of which has been
cut away bearing this in mind it is plainly seen that modifications may easily be
made; a simple one by leaving these collar ends at the extremities of the pins or studds
and slotting out the eyes of certain loose side links so that they may be slipped over
them when bent backwards, say at right angles or thereabouts, as shown in
Figs. 4, 5, 6, & 7. In Fig. 4. which is a sectional plan of the joint-C is the pin,
D, D, are the keys or feathers at its extremity (see also the section in Fig. 5.)
A and A¹ are detachable side links having the necessary slotted holes-see their
side elevation Figs. 6 and 7, for permitting them to pass over the feathered end D D.
When these links are put into position a projection a on A keeps the proper ends of
the links up against the pin C.
Another modification-not drawn-could be made of this last link by casting two
adjacent pins C.C. (together with their adjacent side links A A on both sides-see
Fig. 4.) in one solid piece. Each alternate casting would then be connected by loose
links one on each side-similar to those at A'-Fig. 4.
Another arrangement is shown by Figs. 8, 9, 10, 11, & 12-here Fig. 8. shows the
pin separated from its chain link, Fig. 9. an end view, & Fig. 10. is a section at
the centre. Fig. 11. is a link in plan, & Fig. 12. the same in elevation.
Another arrangement of the feathers and keyways is shown in Fig. 12 which is
a sectional side elevation of the same link (Fig. 12.) with the position of the feathers
altered. Fig. 8 is part of a corresponding pin.

page_text: Another modification of this last is shown in plan in Fig. 13. where two pins and
their adjacent side links are cast together and the loose side pieces are fitted over the
stud ends which project beyond the link thus formed. Fig. 14. is a side elevation of
the double link and Figs. 15. & 16. are respectively single detachable side links which
slip over the stud ends-the keys D. entering the keyways E-and locking when
straightened.
Any of the usual attachments for buckets and other such appendages can be
arranged on any of the links. We prefer to arrange our chain so that the centre
space of each link is left free for the tooth of the driving wheel.
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 mode of attaching links of a chain-belt to one another by hinge-pins having
one short key or feather D-and one keyway E, only, in the adjacent link-end A,
substantially as described herein, and shown on the drawing at X-Fig. 1, with the
object and for the purpose set forth.
2. The mode of attaching links of a chain-belt to one another by keys or feathers
left on the end of the hinge pins, substantially as described herein, and as shown in
Figs. 4, 5, 6, and 7, with the object and for the purpose set forth.
3. The arrangement described in claim 2 when modified to suit the case of links
having two adjacent pins cast together, substantially as described herein, with tho
object and for the purpose set forth.
4. The mode of attaching links of a chain-belt to one another by keys or feathers
left in the eyes of the links, which fit into corresponding locking grooves in the pins
whether made as shown in Figs. 8, 9, 10, 11, and 12, or fitted with the modified form
of pin as in Figs. 124, 84, substantially as described herein, with the object & for the
purpose set forth.
5. The arrangement described in claim 4. modified to suit the case of links having
two adjacent pins cast together, substantially as described, and shown in Figs. 13, 14, 15,
& 16, with the object & for the purpose set forth.
DAL: L
L A1007
ROBT. MIDDLETON.
JNO. A. YEADON.