Improved Means for Securing the Keyholes of all kinds of Locks.
Year: 1893

page_text: Date of Application, 14th Oct., 1893
Complete Specification Left, 14th July, 1894-Accepted, 8th Sept., 1894
PROVISIONAL SPECIFICATION.
Improved Means for Securing the Keyholes of all kinds of Locks.
I, ANDREW CASHIN, of Shakespere Works, Willenhall, in the County of
Stafford, Lock Manufacturer, do hereby declare the nature of this invention to be
as follows:-
This invention consists of the hereindescribed improved means for securing the
key holes of all kinds of locks including padlocks and mortice locks.
According to this invention the keyhole of a lock or in an escutcheon is arranged
to be closed by a slide or flap which can be locked by a small auxiliary lock
provided with a key so that until this slide has been withdrawn or the flap raised
so as to open the keyhole of the principal lock neither the key nor any pickers can
be inserted in the lock. The said locking slide or the flap and the auxiliary lock
by which the slide or flap is locked or unlocked can be arranged in various ways
for instance a slide may be arranged in a slot or in the back of the escutcheon and
arranged to work on a joint pin either above or below or at one side of the keyhole
of the principal lock the said escutcheon also containing the small auxiliary lock
by which the slide is operated to open or close the main keyhole or to secure the
slide locked over the keyhole. Or instead of the slide being arranged to turn on a
joint pin it may be arranged to shoot to and fro to cover or expose the main key-
hole. Or when I employ a locking flap to cover the main keyhole such flap may
be hinged either above or below or at one side of the keyhole and be arranged
like a hasp at its outer end to enter a slot in the escutcheon case or lock case or
otherwise engage with the same and there be retained by the bolt of the auxiliary
lock. Or this locking flap may itself contain the auxiliary lock the bolt of which
will in this case be arranged to engage with a projection on the escutcheon or on
the lock case when the flap is locked over the keyhole. My invention is applicable
to all kinds of locks including padlocks and mortice locks and to escutcheons for
fixing to keyholes as for instance the keyholes for mortice locks in doors.
The key which unlocks the auxiliary lock may either be separate from the key
of the principal lock or and this is what I prefer the same key may be constructed
with two bits or sets of bits so as to unlock both the auxiliary and the principal
lock. The bit for operating the auxiliary lock may for instance be formed near to
the extreme end of the key near the bit for the principal lock and both these bits
may together operate the principal lock. Or the bit for operating the auxiliary
lock may project from the bow end of the key of the principal lock.
Dated this 13th day of October 1893.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improved Means for Securing the Keyholes of all kinds of Locks.
1, ANDREW CASHIN, of Shakespere Works, 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 consists of the hereindescribed improved means for securing the
key holes of all kinds of locks including padlocks and mortice locks; and escutcheons
for fixing to keyholes as for instance the keyholes for mortice locks in doors.
According to this invention the keyhole of a lock or in an escutcheon is arranged
to be closed by a slide or flap which can be locked by a small auxiliary lock

page_text: provided with a key so that until this slide has been withdrawn or the flap raised
so as to open the keyhole of the principal lock neither the key nor any pickers can
be inserted in the lock. The said locking slide or the flap and the auxiliary lock
by which the slide or flap is locked or unlocked can be arranged in various ways as
I will now describe by referring to the accompanying drawings on which
Fig. 1 is a front view and Fig. 2 is a side view of a keyhole escutcheon with my
invention applied in the form of a slide which is locked over the keyhole of the
principal lock; Fig. 3 is a front view of the same with the said slide unlocked and
Fig. 4 represents the same with the front part removed so as to shew the internal
locking mechanism of the slide ;
Figs. 5, 6 and 7 illustrate another arrangement of my invention in the form of a
flap which can be locked over the keyhole of the principal lock the said flap being
shewn locked in Fig. 5 and unlocked in Fig. 6, and in Fig. 7 the front of the flap is
removed so as to shew the internal locking mechanism;
Fig. 8 shews a further modification of my invention and
Figs. 9 and 10 shew how the key for the small auxiliary lock and the principal
lock may be combined together.
The same letters of reference indicate the same or corresponding parts in all the
figures of the drawings.
Referring firstly more particularly to Figs. 1, 2, 3 and 4 A is the escutcheon
made of a hollow box like form and containing the slide B which is arranged to
work on the joint pin C above the keyhole a of the principal lock this slide B
being adapted to turn outwardly as shewn in Figs. 3 and 4 through a side slot a² in
the escutcheon A. By an examination of Fig. 4 it will be seen that the upper
part as of the escutcheon A is formed as a small auxiliary lock by which the
slide B is operated and thrown outwardly as shewn in Figs. 3 and 4 so as to open
the main keyhole a¹ or closed into the escutcheon as shewn in Fig. 1 so as to close
the main keyhole and secure the slide B locked over the same. at is the keyhole
of the small auxiliary lock and the mechanism of this will be rendered clear by an
examination of Fig. 4 where it will be seen that the slide B has a hole through
which the pin and the bits of the key pass when inserted in the small keyhole a*
the pin of the key fitting in a hole a in the back of the escutcheon.
When the
key of the auxiliary lock is turned it raises the levers d and also turns the slide B
outwardly to its position shewn by Figs. 3 and 4. Similarly by turning the small
auxiliary key in the opposite direction the slide B is caused to resume its normal
position covering the keyhole a¹ as shewn in Fig. 1 and in this position the slide B
is locked by the levers & engaging with the projection 62 formed on the slide B as
will readily be understood. When the escutcheon is fixed in position the fixing
screws are hidden as one of these screws marked e is or may be permanently fixed to
the back of the escutcheon so that the escutcheon has to be turned round to screw this
screw e into the door and the other fixing screw passes through the small hole a³ at
the bottom of the escutcheon which is hidden by the lower part 3 of the slide B
when the latter is in its locked position shewn by Fig. 1.
It will be evident that instead of the slide B being arranged to turn on a joint
pin C above the main keyhole A' the slide B might be similarly arranged to turn
on a joint pin below or at one side of the main keyhole a'.
In the arrangement of my invention shewn by Figs. 5, 6 and 7 the keyhole a¹ of
the principal lock is secured by means of the locking flap F which is hinged to the
escutcheon A at f¹ some little distance above the main keyhole a' so that the
flap F will either turn outwardly as shewn in Fig. 6 to expose the main keyhole a¹ and
allow of the key being inserted therein or the flap F can be turned down as shewn
in Fig. 5 so as to cover the main keyhole a'. The flap F contains the auxiliary
lock which is operated by a small key inserted in the keyhole f in the front of the
same the bolt of this lock being arranged to be shot outwardly through a hole
in the bottom of the flap F when the auxiliary key is turned in one direction so as
to engage under the projection a' of the escutcheon A and thus secure the flap F
locked. By turning the key in the opposite direction the sliding bolt fis

page_text: withdrawn into the lock case so as to allow of the flap F being opened. By an
examination of Fig. 7 which shews the flap F with its front part removed the
internal locking mechanism of the bolt f³ will readily be understood and it will be
seen to consist of levers d arranged to be operated by the key and engage with a
projection f* formed on the bolt f³. It will be evident that instead of the flap F
being hinged to the escutcheon above the keyhole a¹ the flap F might be
similarly hinged to the escutcheon below the keyhole a¹ or at one side of the
Fixing screws pass through the holes a⁰ which are hidden by the flap F
same.
when locked down.
In the arrangement of my invention shewn by Fig. 8 the locking flap F does not
contain the locking mechanism but the locking mechanism is contained in the lower
hollow part as of the escutcheon A the flap being made like a hasp at its onter
end so that when the flap F is turned down into its locked position this hasp
like end of the flap F will enter the slot a³ in the lock case a³ and there be
retained by the bolt of the auxiliary lock engaging in the hole ƒ of the end ƒ³ of
the flap F.
On my drawings I have illustrated my invention as applied to escutcheons for
locks but it will readily be understood that my invention can be similarly applied
and fixed to the locks themselves either by fixing the escutcheons as described to
the fronts of the lock cases or by making the slide B or flap F hinged or jointed
directly to the front of the lock case itself.
The key which fits in the small keyhole a or 2 to unlock or lock the auxiliary
lock may either be separate from the key of the principal lock or the same key
may as shewn for instance by Figs. 9 and 10 be constructed with two bits or sets
of bits so as to unlock both the auxiliary and the principal lock. The bit g for
operating the auxiliary lock may for instance as shewn by Fig. 9 be formed near
the extreme end of the key near the bit for the principal lock and both these
bits g and may together operate the principal lock. Or as shewn by Fig. 10 the
bit g for operating the auxiliary may project from the bow end of the key of the
principal lock.
The accompanying drawings illustrate what I consider to be the best methods of
carrying out my invention but it is to be understood that my invention is not
limited to the precise arrangements shewn as it will be evident that these may be
modified without departing from the nature of my invention.
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. The combination with a keyhole escutcheon, of a slide adapted to open or
close the keyhole, and a small auxiliary lock formed in the escutcheon and
arranged to lock the slide to secure the keyhole, all substantially as described.
2. The combination with a keyhole escutcheon, of a flap hinged thereto and
adapted to open or close the keyhole, and a small auxiliary lock formed in the flap
or in the escutcheon and arranged to lock the flap to secure the keyhole, all
substantially as described.
3. The combination with a lock case, of a slide adapted to open or close the
keyhole of the lock, and a small auxiliary lock formed in the escutcheon and
arranged to lock the slide to secure the keyhole, all substantially as described.
4. The combination with a lock case, of a flap hinged thereto and adapted to
open or close the keyhole of the lock, and a small auxiliary lock formed in the flap
or in the escutcheon and arranged to lock the flap to secure the keyhole, all
substantially as described.
Dated thin 12th d... of L. 100
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.