Improvements in Chain Padlocks.
Year: 1894

page_text: Date of Application, 6th Apr., 1894-Accepted, 12th May, 1894
Improvements in Chain Padlocks.
I, ENOCH JONES, of 24 Doctor's Piece, Willenhall in the County of Stafford,
Lock Manufacturer, 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 to chain padlocks constructed with an arm which carries a
stud, the stud being caused to lock the chain by being passed through a link thereof
and against an abutment of the lock case as the arm is moved inwards, that is to
say, to locks constructed with an arm substantially in the manner described and
claimed in my Patent Specification No. 4789 of 1886; and has for its object to
increase the security of such locks by preventing the arm from being forced
outwards by means of an instrument inserted between the link with which the stud
engages and the head of the arm.
The above object is effected, according to this invention, by carrying a guard
over the top of the arm which is flush, or approximately so, with the inner face of
the top or head of the arm when the arm is in its inward or locked position.
Figures 1 and 2 of the drawings herewith illustrate, in front elevation, with the
front plate removed, a chain padlock fitted with an arm in the manner described,
the internal mechanism, other than the arm, being omitted for the sake of
simplicity; and
Figure 3 is an edge view of the lock looking in the direction of the arrow.
In Figure 1 the arm is in its outward or unlocked position, and in Figure 2 it is
shewn in its closed or locked position with the stud carried thereby engaging with
a chain link. Except for the link shewn by Figure 2 the chain is omitted from the
drawings, for convenience of illustration.
A is the arm pivoted at a within the lock case B, and b is the stud which engages
with a link h to lock the chain. A guard c (shewn for distinctness as in section,
Figures 1 and 2) is fixed at its ends to the front and back plates of the lock case,
preferably by forming rivets on its ends which pass through holes formed therefor
in the plates. This guard is formed, preferably, as a broad bar or plate, as shewn,
and passes immediately over the top or head C of the arm A, and its inner edge is
flusb, or approximately so, with the inner face of the head of the arm, when the
arm is closed in as shewn by Figure 2. For the sake of neatness of appearance,
the guard c is, preferably, of the breadth of the head C so that when the arm is
closed in the back of the head is flush with the outer edge of the guard. It is
preferred not to increase the depth of the lock case to allow for the position of the
guard, but to lessen or entirely do away with the portion of the head which is
shewn in the drawing accompanying my said former Specification as projecting
above the stud b, and thus to leave room above the head for the guard.
The guarde securely prevents the arm from being forced outwards by means of
an instrument inserted between the link h and the head C of the bolt.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a chain padlock fitted with an arm carrying a stud which engages, as the
arm is moved inwards, with the link of a chain to lock the chain, substantially in
the manner described, the employment of a guard over the head of the arm,
substantially as and for the purpose described and shewn.

page_text: 2. The guard c substantially as described and shewn by the drawings herewith,
for the purpose set forth.
נ.ב
11004
STEPHEN
WATKINS,
Wolverhampton, Agent for the Applicant.