Improvements in Padlocks.
Year: 1892

page_text: Date of Application, 28th Oct., 1892-Accepted, 10th Dec., 1892
COMPLETE SPECIFICATION.
Improvements in 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 has reference to padlocks of that kind in which the bow shaped
or other shaped shackle (jointed at one end to the lock case) is thrown outwardly
by the act of turning the key in unlocking the padlock, and this invention consists
of the herein-described improved arrangement of mechanism whereby the shackle
is not only thrown out as aforesaid in unlocking the padlock but both ends of the
shackle are locked in the lock case when the padlock is locked, thus obtaining
increased security against forcing the shackle.
We will describe our invention by referring to the accompanying drawing on
which
Figs. 1, 2 and 3 each represent in part sectional elevation a padlock constructed
according to this invention; and Figs. 4, 5 6 and 7 shew parts of the same
separately.
The padlock is represented as locked in Fig. 1 and unlocked in Fig. 3 and
in Fig. 2 the parts are shewn in the positions which they occupy as the key is being
turned in unlocking the padlock.
The same letters of reference indicate the same or corresponding parts in all the
figures.
A is the shackle (which may be bow shaped as shewn or of other convenient
form) which is jointed near one end at a¹ to the padlock case B. This end of the
shackle has a short arm C projecting into the lock case and engaging with one end
of the slide or bolt D. The connection of the arm C with the bolt D is by preference
made as shewn, that is to say, a pin c (see Fig. 4) is formed on the arm C which
engages in a vertical slot in the slide or bolt D and there is also a side
projection d on the slide or bolt D. against which the arm C bears. The slide or
bolt D is suitably guided, as by projections on the lock case (one only of which can
be seen in Fig. 1 and marked b) taking into the horizontal slots d d in the slide D
so that the latter can be moved to or fro by the key being turned and engaging in
the notch . E and F are two levers jointed to the lock case by the pin g.
of these levers are constructed in the usual way to engage with the projection / on
the slide D and to lock the slide when in the position shewn by Fig. 1 and so as to
be lifted and release the slide by turning the key. One of these levers E has an
upwardly projecting arm e' which at its outer end e is shaped to engage with the
outer end of the shackle when that end of the shackle is closed into the padlock
case as shewn in Fig. 1. The end e' of the said arm and the end a² of the shackle A
may as will be readily understood be formed in various ways so as to engage
together but we prefer the hooked formation of these ends shewn upon our
drawing.
Both
When the key I is inserted in the key hole of the padlock and turned to unlock
the same the key first lifts the levers E and F as is usual in other lever locks so as
to release the slide or bolt D. This action of the lever E also causes its arm e¹
to turn far enough to disengage its upper end e from the end a of the shackle and
as the movement of the key is continued the key engages in the notch dand
moves the slide or bolt D side ways in the direction of the arrow in Fig. 2
thereby acting upon the arm C and throwing the shackle outwardly as in Fig. 3
17

page_text: where it is retained by the levers E and F springing down and engaging with the
projection on the slide D (see Fig. 3).
The padlock is by preference made self locking that is to say to lock the
padlock it is only necessary to press the shackle A downwardly with sufficient
pressure to cause the slide D in moving sideways to act upon the inclined
portions of the levers E and F respectively and lift the levers and ultimately
bring the slide D into the position shewn by Fig. 1 when the levers will engage
with the projection of the bolt D and the end e³ of the arm e¹ will engage with
the outer end a² of the shackle and thus secure the same.
It will be seen that when our improved padlock above described is locked as
shewn in Fig. 1 the shackle is very secure as it is held at one end by the slide D
and at the other end by the arm e¹.
It will be evident that the lever F may be dispensed with, but as is well known,
the lock will not then he so secure against picking; or to make the lock more
secure other levers like F may be added as in other lever locks.
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 padlocks of the kind herein referred to in which the shackle is thrown
outwardly by the act of turning the key when unlocking the padlock, the employ-
ment of means substantially as herein described for locking both ends of the
shackle in the lock case as herein set forth.
2. In a padlock and in combination the shackle A slide D and lever E all
constructed and arranged together for joint operation substantially as hereinbefore
set forth and shewn.
3. In a padlock, and in combination the shackle A slide D lever E and one or
more levers Fall constructed and arranged together for joint operation substantially
as hereinbefore set forth and shewn.
4. The combination of parts constituting the improved padlock arranged for
joint operation substantially as hereinbefore described and illustrated by the
accompanying drawings.
Dated this 27th day of October 1892.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.