Certain Improvements in Chain Padlocks.
Year: 1896

page_text: Date of Application, 25th Feb., 1896-Accepted. 18th Apr., 1896
COMPLETE SPECIFICATION.
Certain Improvements in Chain Padlocks.
We, DAVID WAINE and ISAAC WAINE, trading together as John Waine
& Sons, of Britannia Works, Willenhall, Staffordshire, Lock Manufacturers, 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 hereindescribed improvements in chain padlocks.
According to this invention we construct and arrange the parts of a chain
padlock in a more simple manner than heretofore which enables us to produce a
reliable self-locking chain padlock at a low cost.
We will describe this invention by referring to the accompanying drawing on
which
Fig. 1 is a front view and Fig. 2 is a side view of a chain padlock constructed
according to this invention with a portion of the front plate of the lock broken
away in Fig. 1 so as to shew how the shoot or bōlt engages with the chain;
Fig. 3 shews the padlock part without the chain and with the front plate removed
and with the bolt in its locked position;
Fig. 4 shews the same parts as Fig. 3 with the bolt in its unlocked position and
there held by the key;
Fig. 5 is a view of the inner side of the front plate;
Fig. 6 shews the lock case separately;
Fig. 7 is a plan of the lock case and front plate together and
Fig. 8 is a separate view of the bolt of the said padlock.
The same letters of reference indicate the same parts in all the figures.
A is the lock case B is the front plate of the same which is fixed thereto by the
rivets al a² a³. C is the chain jointed at one end to the lock case at el made of
oblong shaped sheet metal links each of which is threaded through the preceding
link and folded over the next link to be threaded thereto, like a chandelier chain,
the extreme end of the chain being made with a tongue e which with the chain is
adapted to pass through the opening at in the lock case so that the shoot or bolt D
will engage with the links of the chain as shewn in Fig. 1. The construction of
the chain C is well known and formis no part of this invention.
According to this invention we provide in the lock case a spring bolt D which is
arranged for backward and forward movement by being slotted at d to fit on the
pin a formed in the lock case A and by also taking into the slot a which is formed
in the partition a' of the lock case. The shoot or bolt D is moved forward to
engage with the chain C by means of the spring E in the lock case A which acts
upon the arm or pin d of the bolt D as shewn in Fig. 3. The bolt D has a down-
wardly projecting horn piece d3 which is acted upon by the key F when the same
is inserted in the key hole and turned in the direction to unlock the lock.
To lock the chain padlock above described the end of the chain C has to be
inserted through the upper end of the hole a' of the lock case A and pulled thereby
acting on the fore end d' of the bolt D (which is rounded or inclined above and
flat underneath) and forcing the bolt backwardly which by the spring E is moved
forward again and engages with any of the links of the chain C as the latter is
pulled through the hole a*.
To unlock the bolt the key F has to be inserted in the key hole and turned so
hat the key will act upon the arm d³ of the bolt D thereby forcing the bolt

page_text: backwardly as shewn in Fig. 4 and allowing of the chain C being pulled out of the
hole a in the padlock casing. The bolt A is maintained in this position so long
as the key remains in the position shewn by Fig. 4 and in order to prevent the key
from being turned too far the lock casing A is made with a projection as with
which the bit of the key F comes into contact when the key is turned to withdraw
the bolt D as shewn in Fig. 4.
On the inner face of the top plate D we make a projecting rib b1 to form a
portion of the partition a' and keep the bolt D in position in the slot or groove a³.
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. In a chain padlock the combination of the lock casing, the chain jointed at
one end to the lock casing and adapted to be threaded through a hole in the same,
and the spring shoot or bolt D adapted to engage with the chain and made with
the side arm d³ for the key to act upon when unlocking the lock, the whole forming
a chain padlock substantially as hereinbefore described and illustrated by the
accompanying drawing.
2. The combination and arrangement of parts forming the improved chain
padlock herein before described and illustrated by the accompanying drawing.
Dated this 20th day of February 1896.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.