An Improved Detachable Coupling Link or Fastener for Key Chains and for other purposes.
Year: 1890

page_text: Date of Application, 7th May, 1890
Complete Specification Left, 7th Feb., 1891-Accepted, 14th Mar., 1891
PROVISIONAL SPECIFICATION.
An Improved Detachable Coupling Link or Fastener for Key Chains
and for other purposes.
1. LEOPOLD MYERS, of Charlotte Street, Birmingham, Warwickshire, Manu-
facturer, do hereby declare the nature of this invention to be as follows:-
This invention consists of the herein described improved detachable coupling link
or fastener for use more particularly in connecting together the ends of chains on
which keys are threaded, but the said link or fastener is applicable to other chains
and for other purposes where a detachable hook or fastener is required.
I will describe my invention as applied to connecting the end links of a key
chain. The said coupling link or fastener consists of two flat plates preferably of
an oblong shape jointed together like a pair of scissors so that they can either be
turned on their joint to lie across each other or turned parallel with each other.
One end of the chain is linked to one end of one of these plates, which I call the
hook plate, and the other end of this plate is formed as a hook to engage with the
link at the other end of the chain. The second plate, which I call the locking
plate, is made of such a length that when turned parallel with the hook plate it will
close the side entrance to the hook and thus lock the end or other link of the chain
in the hook. The plates are temporarily maintained in this position by any con-
venient fastening as by one plate having a small projection which snaps into a
corresponding recess in the other plate.
To unlock the said hooked end from the chain the locking plate has first to he
turned on its joint far enough to expose the entrance to the hook.
In a modification of this invention the locking plate is hooked at both ends
similarly to the first plate but in the opposite direction and the first plate is slotted
where it is permanently linked to the chain. When the plates are brought parallel
with each other the entrances to the hooks are closed by the adjacent plate. To
lock or unlock the coupling the links engaging with the hooks at each end of the
coupling have first to be moved opposite the entrances to their respective hooks
when the plates can be turned across on their joint to free the chain.
The coupling or fastener above described can be used for other purposes such as
to connect on to a fixed staple, bar or eye, similarly as above described for connecting
together the ends of a key chain.
Dated this 6th day of May 1890.
CHARLES BOSWORTHI KETLEY,
Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Detachable Coupling Link or Fastener for Key Chains
and for other purposes.
I. LEOPOLD MYERS, of Charlotte Street, Birmingham, Warwickshire, Manu-
facturer, 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 herein described improved detachable coupling link
or fastener for use more particularly in connecting together the ends of chains on
which keys are threaded, but the said link or fastener is applicable to other chains
and for other purposes where a detachable hook or fastener is required.
I will first describe my invention as applied to connecting the end links of a key
chain and refer to the accompanying drawing on which Fig. 1 is a front view,

page_text: Fig. 2 a back view, and Fig. 3 a longitudinal section, of the said improved coupling
link or fastener closed and connecting together the end of a chain; Fig. 4 she
the said fastener open: Fig. 5 is a front view and Fig. 6 a longitudinal section of
a modified form of the said fastener which is shown open by Fig. 7.
Referring firstly more particularly to Figs. 1 to fit will be seen that the sail
coupling link or fastener consists of two flat plates marked respectively A and B
preferally the oblong shape shewn jointed together at lik a pair of scissors
so that they can either be turn. d on their joint to lie across cach other (see Fig. 1)
or turned parallel with each other as in Figs. 1, 2 and 3. One end of the chain D
is linked to one end of the plate A which 1 call the hook plate. The other
end a² of this plate A is formed us a hook to engage with the link at the other end
of the chain D. The second plate which I call the locking plate, is made of
such a length that when turned parallel with the hook plute A Figs. 1, 2 and 3)
it will close the side ent canes a to the hook e and tim² lock the end link d therein.
The plate And Bar temporarily in intained in this position by any convenient
fastening us by one plate Blasinga an Il project on which sups into a corr. -
sponding recess in the other phit A. To ficilitate this the plate B is or may
he male from thin sheet steel.
To unlock the hooked under from the chain D) the locking plate 1 has first to
he turned on its juint • Tueno vgå to expose the entrance to the hook tse
Fig. 1).
"
In ...lification of the invention shown by Figs, 5, 6 end 7 the locking
plate Bis lonked at both ends to toularly to the plate Ab in the opposite
direction, and the plate A is slotted at of where it is permmently linked to th
chain D. When the plates A and B are brought parallel with each other, a
shown in Fig. 5 and 6, the entrance to the hook is closed by the plate Band
the entrance to the hooks le pre elo ed by the plate A. To look unlock i
coupling the links engaging with the hooks at each end of the complong have first
to be moved opposite the entrances to their resport've hooks as shown in Fig. 7
when the plates can be turned across on their joint to free the chain.
་་
The coupling or fastener above described can be used for other purposes such
to connect on to a fixed staple, Jar or eye, similarly as above described for connecting
together the ends of a key chain. In Figs. » amľ‍ 9 a fastener similar to that above
described and illustrated by Figs. 1. 2, 3 and 4 is represented in use with two ordinary
screw eyes E¹ E- for securing doors and for other like purposes, instead of an ordinary
book or a hasps.
Having now particularly described and ascertained the nature of my said inven
tion, and in what manner the same is to be performed, 1 declare that what I
claim is :-
Detachable compling links or fasteners constructed substantially as hereinbefore
described and illustrated by the accompanying drawing for the purposes set
forth.
Dated this 6th day of F'abruary 1891
CHARLES BOSWORTHI KETLEY,
Agent for the Applicant.