CERTAIN IMPROVEMENTS;ON OR ADDITIONS TO LOCKS AND KEYS
Year: 1829

page_text: TO, ALL TO WHOM THESE PRESENTS: SHALL COME, I, ANDREW
GOTTLIEB, of: Jubilee Place, Mile End Road, in the County of Middlesex,
Locksmith, send, greeting.
WHEREAS His present Majesty, King. George the Fourth, by His Letters
Patent under the Great Seal of Great Britain, bearing date at Westminster,
the First day of June, in the tenth year of His reign, did, for Himself, His
heirs and successors, give and grant unto me, the said: Andrew Gottlieb, His
especial: licence, that I, the said Andrew Gottlieb, my executors, administrators,
and assigns, or such others as I, the said Andrew Gottlieb, my executors,
administrators, 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;ON OR ADDITIONS TO LOCKS AND KEYS;" in which said Letters
Patent; is, contained a proviso, obliging me, the said Andrew Gottlieb, 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 said
Majesty's High Court of Chancery, within six calendar. months next and
immediately after the date of the said recited Letters Patent, as in and by
the same, reference being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Andrew Gottlieb, do hereby declare the nature of my said Invention to consist

page_text: in the application of and securing a piece of paper or other the like fragile
suitable material as a label over the key-hole of locks, in such manner as to
prevent the possibility of a key or any instrument being introduced through
the key-hole into the interior of the lock for the purpose of unlocking it
without detection. And in further compliance with the said proviso, I, the-said
Andrew Gottlieb, do hereby describe the manner in which my said Invention
is to be performed by the following description thereof, reference being had
to the Drawing annexed, and to the figures and letters marked thereon (that
Figure 1 is a front view of my said Invention, and represents a shallow
oblong square box or metal chamber with two key-holes, corresponding with
that of the lock to which it is, to be applied, cut one in the front plate or
cover, and the other in the back of the box. 6, e, e, are three screws in the
back of the box to screw it fast over the key-hole of the lock; these screws in
some cases will screw directly into the lock, as, for instance, when.it.is applied
to a padlock, and in others into the wood outside of the lock, as in the case of
a door lock, where my metal chamber or box will be, screwed through the
-wood-of-the-door-into-the-lock exactly-over-the key-hole. His a tumbler,
acted upon by the spring G, turning on-the pivot J, and provided with a
boss F, which is acted upon by a stub on the shank of the key, herein-after
explained. The tumbler H takes into a spring catch i, i, which holds the
..cover of the box down, until by turning the key the stub on its shank acting
against the, boss F pushes the tumbler out of the catch, and the spring r
throws up the cover, which turns on a hinge at S, and to which, of course, the
spring and catch i, i, are attached. The parts F, G, H, J,.may be con-
sidered as the internal works of the box, and are covered over by a thin plate;
having also a key-hole cut in it, which thin plate is screwed. down. by the
screws 9, 9, 9; upon three pieces of metal rising from the back of the box.to
support it. On this thin-plate I place a piece of paper cut to the width of the
plate, and extending in length as far as the dotted lines L, which represent a
small ledge for preventing the paper from slipping down and interfering with
the free action of the spring catch. Now, when-this piece of paper is laid over.
the thin plate, the cover shut down upon it, and the box screwed over the key-
hole of any lock, it is evident that no key or other instrument could be-
introduced into the lock for the purpose of unlocking it without perforating the
paper, which would cause the attempt at once to be detected; and it should.
be observed, that these papers may be cut from a cheque. book. made to a

page_text: proper size for the purpose, with counterparts, and be left in the book, and
may be written upon in any way to give additional security according to the
service which the locks are destined to perform.
Figure 2 is a section of the box from A to B in Figure 1, the pieces which
support the thin plate being omitted to avoid confusing the Drawing. This
Figure represents the lid shut down upon the piece of paper, which I call the
label, denoted by the red line D. is the catch of the lid, which secures it
down by means of the tumbler F, which takes into it, and which is acted upon
by the spring at its back, the flexure of which spring causes the tumbler to
move back when the catch i is pressed against it, and to return on the hold of
the catch when pressed beyond it. P, P, are two out of four small pins or
points rivetted into the cover of the box, and shutting into small sockets cut
to receive them in the thin plate on which the paper lies; and their object
is, by piercing the paper at those points to hold it firmly, and prevent the
possibility of pushing it on one side, or removing it for the purpose of
opening the lock without detection.
Figure 3 is a transverse section of the box from C to D in Figure 1; B is
the lid shut down; i is the catch of lid B, secured under the tumbler, F; G, the
steel spring at the back of tumbler; L is the hold of the catch; P, P, are
the four pins to prevent the removal of the label D; N is the thin plate which
covers the works; T is one of the pieces of metal on which the plate N is
secured; Qis a brass dropper over the key-hole of lid B.
Figure 4 shews one of my improved keys, with the addition of a stub or
piece of metal at V placed on the shank of the key, so as to act between the
back of the box O and the thin plate N when the key is in the lock. The
stub V is made of sufficient length when the key is turned round to touch
the tumbler F, and to force it off the hold of the catch L, thereby releasing
the lid B, which the spring M, Figure 2, immediately causes to fly up.
Figure 5 is a view of the box with the lid open, and a paper in it.
Now, whereas many variations may be made in the mechanical means by
which I hold the piece of paper over the key-hole of the lock for the purpose
aforesaid, and combining the principles herein-before described; but I claim
as my Invention the (application by such and the like mechanical means as are
herein-before described) of a piece of paper or other the like fragile material
over the key-hole of a lock, in such manner that it cannot be removed, nor
can a key or other instrument be introduced into the lock through the key-
hole for the purpose of opening it without detection, while at the same time
it does not prevent the lock being opened with its proper key when required;
and such my Invention, being to the best of my knowledge and belief

page_text: entirely new, and never before used within that part of. His said Majesty's
United Kingdom of Great Britain and Ireland-called England, His-said
Dominion called Wales, or Town of Berwick-upon-Tweed, I do hereby
declare this. to be my Specification of the same, and that I do verily
believe that this my said Specification, doth comply in all respects-fully and
without reserve or disguise with, the proviso in the said herein-before in part
recited.Letters. Patent contained; wherefore I do hereby claim to maintain
exclusive right.and privilege to my said Invention.
In witness whereof,. I; the said 'Andrew Gottlieb, have hereunto-set, my
hand and seal,this Twenty-eighth day of November, in the year of
oursLord One thousand eight hundred and twenty-nine.
ANDREW (L.B.) GOTTLIEB.
AND BE IT REMEMBERED, that on the Twenty-eighth day of November,
in the year of our Lord' 1829, the aforesaid Andrew Gottlieb 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..
ai A
Inrolled the Twenty-eighth day of November, in the year of our Lord
One thousand eight hundred and twenty-nine.