IMPROVEMENTS IN PADLOCKS
Year: 1875

page_text: LETTERS PATENT to Henry Judson Raymond and Aurelio Migotti,
both of 96, Regent Street, in the County of Middlesex, for the
Invention of "IMPROVEMENTS IN PADLOCKS."
Scaled the 16th October 1875, and dated the 1st May 1875.
PROVISIONAL SPECIFICATION left by the said Henry Judson
Raymond and Aurelio Migotti at the Office of the Commissioners
of Patents, with his Petition, on the 1st May 1875.
WC, HENRY JUDSON RAYMOND and AURELIO MIGOTTI, both of 96,
Regent Street, in the County of Middlesex, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN PADLOCKS," to be as
follows:-
:-
This Invention has for its object improvements in padlocks. For this
purpose we construct a padlock with an outer tubular case of cast metal,
by preference of malleable cast iron or bronze. The tubular case is of
an oval section on the exterior. The bottom of the case is closed by a
thick plate retained by the lower part of the case being closed inwards

page_text: on to it. The top of the case is closed, with the exception of two
circular holes, one at either extremity of the oval, which pass downwards
to the bottom of the case. The staple or hasp is separate from the case,
and its two limbs or arms pass into the case through these holes.
In the central portion of the interior of the case are inserted a number
of discs, cach having portions of its circumference cut away. The discs
are placed one below the other, and every alternate disc is prevented
from turning by small projections upon it entering recesses in the sides
of the case, the other discs are free to be turned by the key, so as either
to cause portions of their circumference to enter notches in the limbs of
the staple, and so retain the staple and prevent it from being withdrawn,
or to bring the parts of their circumference which are cut away opposite
to the limbs of the staple, and so disengage the discs from the staple
and allow the staple to be drawn away from the case.
The several discs are kept concentric with one another by the sides
of the case; and all the discs are pressed towards one another by a spring
interposed between the bottom of the case and the lowest disc. Each
disc has also a portion cut away from it at the centre for the key to pass
through and act upon it. The key is inserted through a hole in the
centre of the bottom of the case, and from the top of the case a pin
extends downwards and forms a pivot for the key to turn upon. When
the key has been inserted into the lock and turned a quarter turn pro-
jections upon it act upon those of the discs which are free to turn and
move them into a position to set the staple free, as above described. By
turning the key a quarter turn in the opposite direction the lock may be
again locked and the key withdrawn.
Both sides of the key are made with similar projections standing out
from it, so that it may be inserted either way into the keyhole.
filed by the said Henry Judson Raymond and Aurelio Migotti in 30
the Great Seal Patent Office on the 30th October 1875.
A
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, HENRY
JUDSON RAYMOND and AURELIO MIGOTTI, both of 96, Regent Street, in
the County of Middlesex, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of May, in the year of our
Lord One thousand eight hundred and seventy-five, in the thirty-eighth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto us, the said Henry Judson Raymond and Aurelio Migotti,
Her special license that we, the said Henry Judson Raymond and
Aurelio Migotti, our executors, administrators, and assigns, or such
others as we, the said Henry Judson Raymond and Aurelio Migotti, our
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 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 "IMPROVEMENTS
IN PADLOCKS," upon the condition (amongst others) that we, the said
Henry Judson Raymond and Aurelio Migotti, our executors or admini-
strators, by an instrument in writing under our or their hands and.
seals, or under the hand and seal of one of us or them, should par-
ticularly 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 Aurelio Migotti, on behalf of myself
and the said Henry Judson Raymond, 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 :-
This Invention has for its object improvements in padlocks. For this
purpose we construct a padlock with an outer tubular case of cast metal,
The tubular case is of
by preference of malleable cast iron or bronze.
an oval section on the exterior. The bottom of the case is closed by a
thick plate retained by the lower part of the case being closed inwards
on to it. The top of the case is closed, with the exception of two
circular holes, one at either extremity of the oval, which pass downwards
to the bottom of the case. The staple or hasp is separate from the case,
and its two limbs or arms pass into the case through these holes.
In the central portion of the interior of the case are inserted a number
of discs, each having portions of its circumference cut away. The discs

page_text: are placed one below the other, and every alternate disc is prevented
from turning by small projections upon it entering recesses'in the sides
of the case; the other discs are free to be turned by the key, so as either
to cause portions of their circumference to enter notches in the limbs of
the staple, and to retain the staple and prevent it from being withdrawn,
or to bring the parts of their circumference which are cut away opposite
to the limbs of the staple, and so disengage the discs from the staple and
allow the staple to be drawn away from the case.
The several discs are kept concentric with one another by the sides
of the case, and all the discs are pressed towards one another by a spring
interposed between the bottom of the case and the lowest disc. Each
disc has also a portion cut away from it at the centre for the key to pass
through and act upon it. The key is inserted through a hole in the
centre of the bottom of the case, and from the top of the case a pin
extends downwards and forms a pivot for the key to turn upon. When
the key has been inserted into the lock and turned a quarter turn
projections upon it act upon those of the discs which are free to turn
and move them into a position to set the staple free, as above described.
By turning the key a quarter turn in the opposite direction the lock
may be again locked and the key withdrawn..
Both sides of the key are made with similar projections standing out
from it, so that it may be inserted either way into the keyhole.
•
The Drawings show a padlock of the above construction.
a is the outer case; 6 the bottom plate; c is the staple; d arc the
discs; d¹ are the small projections upon every alternate disc to prevent
them from turning; d² are slots cut in the centre of each disc for the
key to pass through; d³ are curved recesses formed in the edge of cach
disc. The recesses d³ in the fixed discs allow the limbs of the staple to
pass freely. When the recesses d³ in the moveable discs coincide with
them the staple can be withdrawn from the lock case; if however a
partial turn is given to the moveable discs the discs enter the grooves
in the staple and secure it. The slots in the several moveable discs are
at varying angles with respect to the recesses d³, so that the projections
upon the key have to be formed at varying angles, as indicated by the
dotted lines in the end view of the key. When the lock is locked the
slots in all the discs are brought to coincide with one another, so that
the key may be withdrawn; e is a spring to press the several discs

page_text: upwards and keep them together; f is a pin to form a pivot for the key
to turn on.
In the Drawings the padlock is shewn to be locked, to unlock the
lock the key is inserted into the keyhole and a quarter turn is given to
it. This brings the moveable discs into the required position, as above
explained, and all further movement of the key is arrested by projections
on the stem of the key then coming into contact with the slots in the
fixed discs.
We claim the construction of padlocks substantially as herein-before
described.
In witness whereof, I, the said Aurelio Migotti, have hereunto set
my hand and scal, this Twenty-eighth day of October, in the
year of our Lord One thousand eight hundred and seventy-
five.