CERTAIN IMPROVEMENTS ON LOCKS AND LATCHES WITH REGARD TO THE SECURITY OF THE SAME, AND THE CONSTRUCTION OF THE INTERIOR AND EXTERIOR PARTS THEREOF
Year: 1831

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
YOUNG, of Wolverhampton, in the County of Stafford, Locksmith, send
greeting.
WHEREAS His present most Excellent Majesty King William the
Fourth, by His Letters Patent under the Great Seal of Great Britain, bear-
ing date at Westminster, the Seventh day of July, in the second year of
His reign, did, for Himself, His Heirs and successors, give and grant unto
me, the said John Young, His especial licence, sole privilege and authority,
that I, the said John Young, my exors, admors, and assigns, or such others
as I, the said John Young, my exors, admors, or assigns, should at any
time agree with, and no others, from time to time and at all times during
the term of years therein mentioned, should and lawfully might make, use,
exercise, and vend, within England, Wales, and the Town of Berwick-upon-
Tweed, my Invention of "CERTAIN IMPROVEMENTS ON LOCKS AND LATCHES WITH
REGARD TO THE SECURITY OF THE SAME, AND THE CONSTRUCTION OF THE INTERIOR
AND EXTERIOR PARTS THEREOF;" in which said Letters Patent is contained a
proviso, that I, the said John Young, shall cause a particular description of
the nature of my said Invention, and in what manner the same is to be
performed, to be inrolled in His said Majesty's High Court of Chancery
within six calendar months next and immediately after the date of the said in
part recited Letters Patent, as in and by the same, reference being thereunto
had, will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
John Young, do hereby declare that the nature of my said Invention, and the
manner in which the same is to be performed, is particularly described and
ascertained by the following description thereof, reference being had to the
Drawing hereunto annexed, and to the figures and letters marked thereon
(that is to say):-
My improvements in Figures 1 and 2 (representing my fly guard lock) consist
of the fly guard lever and their springs, which I claim as my Invention. The
other parts of the lock are in the usual way.
Fig. 1 represents the guard in its proper place, as though going to be
unlocked by its own key. Other and full explanation is given by Fig. 2. The
guard is shewn out of its unlocking position, as though a false key had been
introduced. A, A, the bolt; B, the fly guard; C, its centre; D, the fly
guard lever to keep the guard in its proper position; E, its centre; F, its
spring; G, the fly guard spring (all on the bolt); H, three, four, or more
levers; I, the centre pin to the levers; K, the square pin on the bolt. Should
either of the levers be raised above its locking position by the introduction of
any, pick or faslse key it will lift up the fly lever, which will cause the guard to
fly out of the notch L at the end of the lever D, and take a cross position at
the end of the levers H. This shews the security of the fly guard; even its
own key will not unlock it till it is turned as though going to double lock it.
The fly guard and lever then move along with the bolt, which forces the arm
of the fly guard against the pin M (rivetted on the plate); the fly guard then
moves back into the notch L of its lever D, and it is then in a position to.
return into the grooves at the end of the levers H, and can be unlocked by its,
own key.
My improvements in Fig. 3 consist of the case or exterior part of a lock
cast in iron, instead of the case of the lock being cast open to receive the cap
or cover in the old way. My improvement consists of the cap or cover being
cast on leaving the back open to receive a wrought-iron plate. The staple A
for the bolt to run under is cast at the same time; without this staple the
bolt hole would so weaken the fore end of the lock as to render it liable to
break. If more than one bolt is wanted in the lock, cast more than one
staple, otherwise cast a bar across from B to C, which will form a staple all.
across. The holes to receive the works of the lock are cast in the cap or
cover. D, D, D, D, four rivets or pins to receive the wrought-iron plate.
This wrought-iron plate strengthens the whole of the cast iron.
My improvements in Fig. 4 consist of a secure drawback lock or latch..

page_text: A, A, the spring bolt; B, the follow with its spring; at the back is a knob-
and slide plate in the usual way; C, a circular plate with a projection D, and
its groove to admit the pin E on the spring bolt to be drawn back when
wanted; the circular plate has a drill pin for its centre. F, F, two pins, one
on the right and the other on the left side of the drill pin on the circular plate;
G, G, one, two, or more levers (if required) each side the drill pin; H, H,
the two centre pins belonging to the levers, which are kept in their proper
place by their spring I, I, extending from the round pin K each way to work
the levers G, G; by the introduction of its own double-bitted key, as seen at
Fig. 5, it expands the levers on each side the drill pin so that the pins F, F,
are at liberty to pass into the grooves of the levers G, G; the one bit of the
key then presses against the stop on the circular plate, as seen at A, Fig. 6;
the pins F, F, on the circular plate then move into the grooves of the levers
G, G, at the same time the projecting part of the circular plate presses against
the pin E, the spring bolt then moves back. The slide L is rised in the
usual way.
My improvements in Fig. 7 consist of a secure drawback lock or latch
varying from Fig. 4. A, A, the spring bolt; B, the follow with its spring.
At the back is a slide plate and knob in the usual way. C, a circular ring;
D, the centre pin belonging to the ring. The ring has a procection part E to
take the bolt back. F, the pin on the projection part; G, one, two, or more
levers; H, their centre pin; I, their spring. The key when introduced lifts
up the levers, then it presses against a stop in a part of the ring, as seen at
A, Fig. 8, and moves the pin F into the grooves of the levers to K, at the
same time the projection part of the ring E takes the bolt back, then by
turning the key the reverse way it will lift up the levers; it then bears against
the stop in the inside the ring, as seen at B, Fig. 8; it takes it forward at
the same time the pin J moves into the rack L of the levers, the projection
part of the ring E is then against M of the open space of the bolt, it is then
made fast. By the introduction of its own key it will bring the bolt back as
before. The slide N is used in the usual way.
My improvements in Fig. 9 consist of a pendulum latch well adapted for
door locks, door and shutter latches, &c. A, A, the long rod of the latch;
B, its centre pin; C, the cross part at the bottom of the rod, which is bevilled
off at D to cause the latch to go back when it strikes against its plate; E,
the part cranked at the top of the rod; H, the spring to keep the latch out
of the fore end; I, the follow; K, K, its two arms. Let the follow be turned
either way one of the arms bears against the crank part of the rod, and

page_text: brings the bevel D and catch into the fore end. This latch moving on a
centre adds very much to its wear, and easy, firm, and pleasant action.
In witness whereof, I, the said John Young, have hereunto set my
hand and seal, this Twenty-second day of December, One thousand
eight hundred and thirty-one.
ROBINS, Extra.
AND BE IT REMEMBERED, that on the Twenty-second day of December
in the year of our Lord 1831, the aforesaid John Young came before our
said Lord the King in His Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.
Inrolled the Seventh day of January, in the year of our Lord One