CERTAIN IMPROVED MACHINES, INSTRUMENTS, OR CONTRIVANCES, APPLICABLE TO DOORS AND WINDOW SHUTTERS, FOR PREVENTING THEM FROM BEING BROKEN OPEN, AND SUCH DOORS FROM BEING VIOLENTLY FORCED IN BY THE WIND OR OTHERWISE, PART OF WHICH MAY BE APPLIED TO OTHER USEFUL PURPOSES
Year: 1813

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
BULLOCK, of Newman Street, in the County of Middlesex, Locksmith and
Brassfounder, and JAMES BOAZ, of Glasgow, in Scotland, Engineer, send
greeting.
WHEREAS His most Excellent Majesty King George the Third did, by
His Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Fifteenth day of May,
in the fifty-third year of His reign, give and grant unto us, the said William
Bullock and James Boaz, our exors, admors, and assigns, His especial licence,
full power, sole privilege and authority, that we, the said William Bullock
and James Boaz, our exors, admors, and assigns, should and lawfully might,
during the term of years therein mentioned, make, use, exercise, and vend,
within England, Wales, and the Town of Berwick-upon-Tweed, our Invention"
of "CERTAIN IMPROVED MACHINES, INSTRUMENTS, OR CONTRIVANCES, APPLICABLE
TO DOORS AND WINDOW SHUTTERS, FOR PREVENTING THEM FROM BEING BROKEN
OPEN, AND SUCH DOORS FROM BEING VIOLENTLY FORCED IN BY THE WIND OR
OTHERWISE, PART OF WHICH MAY BE APPLIED TO OTHER USEFUL PURPOSES;" in
which said Letters Patent there is contained a proviso that if 'we, the said '

page_text: William Bullock and James Boaz, or one of us, shall not particularly describe
and ascertain the nature of our said Invention, and in what manner the
same is to be performed, by an instrument in writing under our hands and
seals, or under the hand and seal of one of us, and cause the same to
be inrolled in His Majesty's High Court of Chancery within two calendar
months next and immediately after the date of the said Letters Patent, that
then the said Letters Patent, and all liberties and advantages whatsoever
thereby granted, shall utterly cease, determine, and become void, as in
and by the same, relation being thereunto had, will more fully and at
large appear.
NOW KNOW YE, that in compliance with the said proviso, we, the said
William Bullock and James Boaz, do hereby declare that the nature of our
said Invention, and the manner in which the same is to be performed, are
particularly described and ascertained in manner following; that is to say:―
In the Drawing hereunto annexed, firstly, Fig. 1, Fig. 2, and Fig. 3
represent one of our said improved machines, instruments, or contrivances,
consisting of the supporter of a bell to be affixed to shutters, or folding doors,
or the like, and the same letters denote the same things in each Figure. In
the front plan or section Fig. 1, a, b, represents a flat plate fixed by two or
more binding screws to the inside face of the shutter, and having a joint or
hinge at 6; and 69 represents a supporting piece or lever for the bell e, and
moveable on the joint 6, and capable of being raised and put into the position
shewn in Figure 2; and from the piece 6 q proceeds the propf, g, moveable
upon the joint f, and serving to keep b, q, in the position Fig. 2 by bearing
upon the projecting. piece h, as is shewn. C is a stud, upon which the bell
spring d is fixed or attached, and carries the bell l. m, n, represents the
shutter or door, and i, k, represents the line at which the two shutters or doors,
or the door and doorpost, meet; and a, b, along with the several other pieces
:thereunto or therewith attached or connected, is fixed on one side of the said
line, and the projecting piece h on the other side, so that if the shutters or
doors or door be closed, and the whole contrivance placed, set, or adjusted as
shewn in Figure 2, and the said shutters, doors, or door, or any other of them,
be opened more or less by accident or violence, the prop f. o, will be
disengaged from its support N, and the lever b, q, will fall suddenly into the
position shewn in Figure 3, and the bell 7 will ring violently.
And, secondly, Figure 4 represents another of our said improved machines,
instruments, or contrivances, wherein a, b, is a lever, to which the bell
spring d, d, and bell are attached parallel to the face of a shutter or door, or
nearly so, of which i, k, shews the closing line or joint; and the said lever a, b,

page_text: is moveable upon the center or pin f, in a plane nearly or quite parallel to the
said shutter or door; and the said pin f, being moveable by a spiral spring in
a spring carriage c, c, can be moved so as that the upper extremity 6 thereof
shall be brought down and confined beneath the projecting piece h, which is
fixed on the opposite side of the line i, k, so that if the shutters or doors or
door be closed, and the apparatus set as last mentioned, and any or either of
the same be then opened as before, the extremity 6 will fly up, and the bell
come into the position shewn in the Figure, and will ring violently. And,
further, if the extremity A or other part of the lever a, b, be connected with a
point or part m belonging to the wire of an alarm or distant bell, the same
may and will be discharged and made to ring or sound, in consequence of the
extremity 6 having been disengaged as aforesaid.
And, thirdly, Fig. 5 represents another of our said improved machines,
instruments, or contrivances, wherein b, d, denotes a door, and h the upper
part of the door head or frame, or motionless part above; and a, b, is a lever,
moveable through a small angle of descent by means of the joint a, and
connected by the jointed part 7 with the rod e, f, and this rod is fastened to the
lower and moveable part of a pair of bellows or air cylinder, fixed by the
upper part thereof at 9; and the use and purpose of the said lever a, b, are
that it affords a resistance to the sudden shutting of the door, while the
bellows or cylinder suffer compression by means of the rod e, f, which com-
pression causes of a great part of the included air to escape through. the
imperfections or imperfect joinings of the said instruments, or through a small
hole left or made for that purpose. And the said bellows or air cylinder, and
the levers or parts for performing the action, may be varied and placed in any
other convenient situation whereby the same effects may be produced, and par-.
ticularly as shewn in Figures 5 and 6 and 7*, where c, b, d, represents the
door, from which proceeds a pin K, which, during the shutting, acts against.
the inclined face m of a piece moveable on a, and acting on one leg of a
bended lever b, q, f, moveable on the center q, and causes the other end
press the bellows g.
to
And, fourthly, Figure 6 represents another of our said improved machines,
instruments, or contrivances, wherein a, b, is the spring bolt of a lock shooting
beyond the plate or frame at a; and c, d, is a jointed tail, which, being move-.
able upon a pin or center at c, and being jointed at d, does allow the bolt to
move backward and forward, but prevents its having any other motion, altho
the same is not confined by any sliding pieces or cocks, as heretofore used, but
is left to move freely and without restraint. h, i, k, is the back spring, and f, g,
is the follower, which is turned by an handle or piece upon its center at h, and

page_text: acts upon the jointed lever e, d; and the legs or branches e, f, e, g, are
made of different lengths, the leg or branch e, f, being in the same proportion
to the leg or branch e, g, as the distance of pressure c, f, upon the lever c, d,
is to the distance of pressure c, g, and by these means the said spring bolt a, b,
is made to move with great ease and facility, and with a pleasant, gentle,
and equal reaction against the hand, whichever way the said handle may be
turned or moved.
And, fifthly and lastly, another of our said improved machines, instruments,
or contrivances doth consist in a lock, of which the key is provided with more
bits, faces, or bearing or acting parts than one; and the said bits, faces, or
bearing or acting parts do, in the revolution of the said key, act upon certain
tumblers or levers, or revolving parts, which we do construct within the said
locks in connection with the plates or motionless parts thereof. And we do
also form, fashion, or make, upon the said tumblers, levers, or revolving parts,
certain studs or projections, which are by consequence moved along with the
same respectively. And we do also move the bolt or bolts of our said lock by
one or more of the said bits, faces, or bearing parts of our said key, or by
means of an intermediate wheel or rack moved by the key, and acting upon
the said bolt or bolts. And we do also fashion, form, or make, upon the face
or faces of the said bolt or bolts, intermediate wheel or rack, or any or either
of them, certain projections, grooves, channels, studs, or other pieces, in or
through which the said other studs or projections belonging to the said
tumblers, levers, or revolving parts shall be allowed to move with freedom
during the turning of the said key and motion of the said bolt or bolts, but of
all which the said motion would be obstructed if the several parts of the key
or of a false key were not very accurately adjusted to the lock, and which
adjustment could not be made without the most extreme and nearly insur-
mountable difficulty, unless the lock itself were in the first instance manufac-
tured and made to fit the key previously formed for that purpose. And in
some locks we do reverse this arrangement by connecting the said tumblers,
levers, or revolving parts with the said rack, bolt, or bolts, and do fashion,
form, or make the said projecting grooves, channels, studs, or other pieces, in
connection with or fixed to the plate or motionless part of the lock; but we
prefer the former mode of arrangement.
In witness whereof, we, the said William Bullock, have hereunto set
our hands and seals, this Fourteenth day of July, in the year of our
Lord One thousand eight hundred and thirteen.
W BULLOCK. (L.S.)

page_text: AND BE IT REMEMBERED, that on the Fourteenth day of July, in the
year of our Lord 1813, the aforesaid William Bullock came before our said
Lord the King in His Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stampt according to the
tenor of the Statute made for that purpose.
Inrolled the Fourteenth day of July, in the year of our Lord One
thousand eight hundred and thirteen.