Improvements in Closing Devices for Keyholes of Locks.
Year: 1889

page_text: עעע בעטרי
Improvements in Closing Devices for Keyholes of Locks.
A cominunication from Dr. FRIEDRICH EICHE, of Dresden, in the Empire of Germany,
Dentist.
I, ALFRED JULIUS BOULT, of 323 High Holborn, in the County of Middlesex, M.I.M.E.
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:-
The present invention relates to closing devices for keyholes of locks of all sizes and
construction.
This device consists as will be seen from the accompanying drawings of the body a
which serves to cover the keyhole, the tube screwed into the said body, the sleeve c
passed over the tube band provided with a projection for filling the keyhole, and the
part d screwed into the tube 6 and the back end of which is formed with one or more
openings for the reception of a removable projection e.
To introduce the apparatus into the keyhole to be closed, the part & must be turned
so that the projection e projects downwards. The back end of this part & fills the
inner end of the keyhole and the sleeve c the outer end.
To fasten the device in the keyhole, the part d is turned until the projection e abuts
firmly against the case A of the lock. The part d is turned by means of a pin or key f
the end of which is formed with projections or recesses fitting recesses or projections
formed on the front end of the part d. The key f is then withdrawn.
The novelty and the value of the present invention consist in the fact that the
sleeve c for filling the keyhole, the part d and the projection e can be removed at
will and replaced by others so as to fit a lock of any size and construction.
The sleeve c is manufactured in different sizes which are supplied with each
apparatus, it is passed over the tube from behind and enters a recess formed in the
body a to prevent any lateral displacement.
The part d is also removable and is constructed thinner or thicker, solid or hollow
according to the construction of the lock, but its head 9 and its screw threaded part
always fit the key fand the inner screw thread of the tube b.
The projection e is introduced in one of the openings formed in the part d, three
being shown in the accompanying drawings, according to the thickness of the lock.
By means of the adjustable part d a small difference can always be compensated so
that only a few turns of the screw are necessary to lock the device in the keyhole.
In consequence of this arrangement the above described apparatus can be used with
locks of all sizes or construction on doors, cupboards, boxes and the like.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
A closing device for keyholes of locks comprising a removable sleeve, such as c
in combination with a screw part d into which is introduced a removable projection e
which is pressed forcibly against the case of the lock by the said screw part d being
turned by means of a key f; this arrangement being for the purpose of adapting the
said device to be used with locks of all sizes and construction, the whole constructed
and operating substantially in the manner and for the purpose described and illustrated
in the accompanying drawings.