AN IMPROVED MEANS OR APPARATUS FOR OBTAINING INCREASED SECURITY TO THE LOCKS OF DOORS, OR GATES, TO ROOMS, AND OTHER PLACES.
Year: 1873

page_text: LETTERS PATENT to Thomas Mansbridge, of Elm Lodge, Bray, in the
County of Berks, for the Invention of "AN IMPROVED MEANS OR
APPARATUS FOR OBTAINING INCREASED SECURITY TO THE LOCKS OF DOORS, OR
GATES, TO ROOMS, AND OTHER PLACES.
Sealed the 19th December 1873, and dated the 26th June 1873.
PROVISIONAL SPECIFICATION left by the said Thomas Mansbridge
at the Office of the Commissioners of Patents, with his Petition,
on the 26th June 1873.
I, THOMAS MANSBRIDGE, of Elm Lodge, Bray, in the County of Berks,
do hereby declare the nature of the said Invention for "AN IMPROVED
MEANS OR APPARATUS FOR OBTAINING INCREASED SECURITY TO THE LOCKS OF DOORS,
OR GATES, TO ROOMS, AND OTHER PLACES," to be as follows:-
My Invention has for its object the greater security from illicit
opening of doors, or gates, of rooms, and other places by the unlocking of
the locks thereof by the use of duplicate or other keys or means of
opening. For this purpose I employ a bar of steel or other suitable
metal having another shorter bar or plate formed with capability of

page_text: turning on a hinge or pin joint on such longer bar in one direction,
whilst it is prevented from turning beyond the desired extent by the end
or edge of the longer bar being turned over or formed to act as a stop.
This shorter arm is formed to lic in a recess or close to the longer bar in
order to their being passed through the keyhole of the door or gate
from the one side to the other, when the shorter bar is allowed to turn
to about a right angle to the longer bar, this longer bar being then
drawn partly back and a padlock or other fastening secured thereto by
being passed through a hole, or one of a series of holes formed in that
longer bar.
In some cases I employ more than one shorter bar to turn on a
longer bar upon being passed through a keyhole of a door or gate, and
thereby prevent the withdrawal of such longer bar from the opposite
side. The longer bar may be withdrawn on the padlock or other
retaining means being removed from the opposite side to that in which
it was inserted in the keyhole of the door or gate. By this means
greater security is obtained against the unlocking of doors or gates by
the use of duplicate or other keys, or means therefor particularly
applicable to the doors of rooms of hotels and other places.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Mansbridge in the Great Seal Patent
Office on the 24th December 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
MANSBRIDGE, of Elm Lodge, Bray, in the County of Berks, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of June, in the year of our
Lord One thousand eight hundred and seventy-three, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Thomas Mansbridge, Her special :
license that I, the said Thomas Mansbridge, my executors, administrators,
and assigns, or such others as I, the said Thomas Mansbridge, my
executors, administrators, and assigns, should at any time agree with, and
no others, from time to time and at all times thereafter during the term

page_text: therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED MEANS
OR APPARATUS FOR OBTAINING INCREASED SECURITY TO THE LOCKS OF DOORS, OR
GATES, TO ROOMS, AND OTHER PLACES," upon the condition (amongst others)
that I, the said Thomas Mansbridge, my executors or administrators,
by an instrument in writing under my, or their, or one of their hands
and seals, should particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Thomas Mansbridge, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say :-
My Invention has for its object the greater security from illicit
opening of doors, or gates, of rooms, and other places by the unlocking
of the locks thereof by the use of duplicate or other keys or means of
opening. For this purpose I employ a bar of brass, steel, or other
suitable metal having another shorter bar or plate formed with capability
of turning on a hinge or pin joint on such longer bar in one direction.
whilst it is prevented from turning beyond the desired extent by the end.
or edge of the longer bar being turned over or formed to act as a stop.
This shorter arm is formed to lie in a recess or close to the longer bar in
order to their being passed through the keyhole of the door or gate from
the one side to the other when the shorter bar is allowed to turn to
about a right angle to the longer bar, this longer bar being then drawn
partly back and a padlock or other fastening secured thereto by being.
passed through a hole, or one of a series of holes, formed in that. longer.
bar..
In some cases I employ more than one shorter bar to turn on a longer.
bar, upon being passed through a keyhole of a door or gate, and thereby
prevent the withdrawal of such longer bar from the opposite side.
The apparatus may be readily removed again from the keyhole on the
releasing therefrom of the padlock or other retaining means. By this

page_text: gates by the use of duplicate or other keys or means therefor particularly
applicable to the doors of rooms of hotels and other places.
But that the Invention may be better understood I will by the aid of
the accompanying Drawing proceed to describe means which I adopt in
carrying my Invention into effect.

page_text: Variations may be made in the form or construction of the apparatus,
and additional strength, when required, may be given to the part a³ by
forming it double there, and so that the shorter bar 6 may be capable of
moving freely on the pin c between these two parts or sides a³ of the
longer bar a.
In some cases also more than one shorter arm 6 may be employed, but
in all cases it is desirable that the depth or other form of the bar a be
such as to prevent it being turned in the keyhole.
Having thus described my Invention, and means which I adopt in
carrying the same into effect, I would have it understood that I do not
confine myself to the precise arrangements of parts, as shewn, as the
same may be varied without departing from the peculiar character of my
Invention, but what I do claim is, the arranging or combining parts
forming means or apparatus for use in obtaining increased security to
the locks of doors or gates, to rooms, and other places, substantially as
described.
In witness whereof, I, the said Thomas Mansbridge, have hereunto
set my hand and scal, this Twenty-fourth day of December, in
the year of our Lord One thousand eight hundred and seventy-
three.