CERTAIN IMPROVEMENTS IN LOCKS AND OTHER SPRING FASTENINGS FOR DOORS AND OTHER PLACES
Year: 1831

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
BARNARD, of Bristol, Builder, send greeting.
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Twenty-third day of May, in the first year of His reign, did,
for Himself, His heirs and successors, give and grant unto me, the said
George Barnard, His especial licence that I, the said George Barnard, my
exors, admors, and assigns, or such others as I, the said George Barnard,
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
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 LOCKS AND OTHER SPRING FASTENINGS FOR DOORS
AND OTHER PLACES;" in which said Letters Patent is contained a proviso,.
obliging me, the said George Barnard, 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 enrolled 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
George Barnard, do hereby declare the nature of my said Invention to consist
in the following improvements, that is to say :-
First, in having the handle which moves the spring catch fixed to a separate

page_text: lever or crank acting upon the arm which projects from the catch, but
distinct from it, by which means the said arm may always be of the same
length however thick the door is. Secondly, in placing the spring which acts
upon the catch at the front part of it, and fastened to the plate which is fixed
to the front edge of the door, by which position of the spring I am enabled to
use a much longer and consequently a much more pliant spring. And, lastly,
in a small plate of metal cast upon the key so as to get the exact impression
from it, and then brazed on to the. lock plate to form the keyhole, whereby
the pattern of the key is so exactly formed in the keyhole that it would be
very difficult afterwards to make any other key to fit the same hole, and
which is therefore a very great additional safeguard to the lock.
And in further compliance with said proviso, I,. the said George Barnard, 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 is to say :--
DESCRIPTION OF THE DRAWING.
Figure 1 is a sectional plan of one of my improved locks or spring fastenings
for doors; in this Figure I shall only describe my first improvement as the
others will be better explained by the other Figures; and it may be as well here
to observe that similar parts are denoted by similar letters in all the Figures.
A, A, A, is the spring catch; B is the arm projecting from the catch on one
side, which may always be of one length; C is the arm which projects from
the other side, and the length of which must always depend on the thickness
of the door; the part colored pink is a separate crank turning on the joint D,
and to which the handle E must be fixed; this crank must have a fork upon
it as shewn at F, which loosely bestrides the arm C below it. Now it will be
seen that the position of this fork on the crank will determine the length of
the arm C, while the end G of the crank may be extended to any length to
suit the thickness of the door. Figure 2 is the interior of one of my improved
spring fastenings, shewing all my improvements; the part colored pink is the
crank before described.
His my second improvement, namely, a long vertical spring acting against
the front part of the catch at I, and fastened to the bottom of the front
plate at J, the front of the door being of course cut away to allow of its
necessary action; K, which I do not claim as any part of my said Invention,
is a lock bolt with an ordinary spring L, which bolt is thrown by means of a
key into a part of the catch which I call the frame of the catch at M, thereby
fixing the catch and making a lock of it.
'

page_text: N is my third improvement, and consists of a piece of metal cast upon the key
itself, in the first instance, so as to get the exact form of it, and then brazed over
an aperture made in the lock plate so as to form the keyhole. In this Figure
the catch is shown out and locked; the bolt or section, which in the Drawing is
marked with the letter K, is now improved, and is guided and acts wholly on
a centre, and is my Invention, and is placed underneath the Drawing, and is
marked thus, K the second; this makes the fourth and last improvement,
Figure 3 is a similar view of the interior of the lock with the catch drawn in,
and of course therefore unlocked; Figure 4 is a view of the other side of
the lock, and Figure 5 is the key.
Now whereas I claim as my Invention the improvements herein-before
described, and such my Invention being to the best of my knowledge
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 of 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 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 George Barnard, have hereunto set
my hand and seal, this Twelfth day of November, in the year of
our Lord Oue thousand eight hundred and thirty-one.