CERTAIN IMPROVEMENTS IN THE CONSTRUCTION OF LOCKS FOR DOORS, AND OTHER PURPOSES
Year: 1825

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
YOUNG, of Wolverhampton, Cooper, send greeting.
WHEREAS His present most Excellent Majesty King George the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date
at Westminster, the Fourteenth day of May, in the sixth year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said
John Young, His especial licence, that I, the said John Young, my exors,
adiiors, and assigns, or such others as I, the said John Young, my exors,
adiñors, 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 expressed; should and
lawfully might make, use, exercise, and vend, within England, Wales, and the
Town of Berwick-upon-Tweed, my Invention of "CERTAIN IMPROVEMENTS IN
THE CONSTRUCTION OF LOCKS FOR DOORS, AND OTHER PURPOSES," in which said
Letters Patent there is contained a proviso, obliging me, the said John Young,
by an instrument in writing under my hand and seal, particularly to describe
and ascertain the nature of my said Invention, and in what manner the same
is to be performed, and to cause the same to be inrolled in His Majesty's High
Coart 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 performed, are particularly described and
ascertained in and by the Drawings hereunto annexed, and the following
description thereof (that is to say) :-
Fig. 4, over
pins on the
This lever is
For a stock lock. The stock being squared in the usual way, a circular
perforation is then made large enough to admit the upper cap or plate, and
hollowed underneath sufficient to admit the work to the lower plate L, P.
Figure 1 is attached in the usual way, the bolt spring or springs B, S, and
also a forked F, S, extending to the drill pin D, P, for the purpose of raising
a swivel, represented at S, Figure 2; this swivel has the drill pin for its centre
of motion, round which it freely turns, resting on the forked spring, and when
depressed by the key depresses the forked spring, and passes by the notch N
(Fig. 2) under a hook II, Fig. 1, placed on the lower plate L, P. There is
also a guide G for the bolt, and pieces for fixing the upper plate, as usual.
Figure 3 represents the swivel placed on the drill pin, and passed under the
hook H, which keeps it down until by using the key the swivel is so turned
that the notch N and hook H correspond; the swivel is then raised by the
forked spring. The bolt is racked on both sides, as shewn by B,
which is placed a lever or tumbler L, Fig. 5, having two square
under side rivetted into the lever, as shewn at No. 1 and 2.
placed over the bolt, having the bolt guide G, Fig. 1, for its centre of motion
in the customary way of placing levers. The bolt spring B, S, Fig. 1, may act
on the back of the lever as well as on the bolt, or more than one spring may
be used. Figure 6 shews the situation of the parts when locked, the lever
being removed; the notch N having allowed the swivel to rise, the pin P in
the swivel, Fig. 2, takes into a hole h in the bolt, Fig. 4, being an additional
security to the lever, which, when in its place and locked, would pass the pin
No. 1 of the lever into notch No. 1 of the bolt, and if forced too far back by a
false key or picklock, would pass the pin 2 into the notch 2, effectually pre-
venting the drawing of the bolt, thus possessing additional security to a Barron's
lock, produced by simplar means. The upper plate may be screwed down in
the way well known to locksmiths. The advantages of this lock consist in its
security, effected by simple means not likely to be deranged, and in its dura-
bility; from the peculiar manner of insertion in the stock, so little surface being
exposed, it promises to be particularly adapted for vaults, cellars, &c. The
principle of this my Invention may be adapted to all kinds of locks, and varied
in form; er by the use of one or more levers or springs, as, for instance, the

page_text: upper side of the swivel may work in the under side of the upper plate, thereby
giving the swivel a steadier action.
In witness whereof, I, the said John Young, have hereunto set my hand
and seal, this First day of November, in the year of our Lord One
thousand eight hundred and twenty-five.