IMPROVEMENTS IN THE CONSTRUCTION OF Locks AND LATCHES, APPLICABLE FOR DOORS AND OTHER PURPOSES
Year: 1841

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JESSE
SMITH, of Wolverhampton, in the County of Stafford, Lockmaker, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Ninth day of November, in the fifth year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said Jesse
Smith, Her especial licence, full power, sole privilege and authority, that I, the
said Jesse Smith, my executors, administrators, and assigns, and such others as
I, the said Jesse Smith, 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 mentioned, should and lawfully might make, use,
exercise, and vend, within England and Wales and the Town of Berwick-
upon-Tweed, my Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF Locks
AND LATCHES, APPLICABLE FOR DOORS AND OTHER PURPOSES;" in which said
Letters Patent is contained a proviso, obliging me, the said Jesse Smith, 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 Her 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, 1, the said
Jesse Smith, do hereby declare that the nature of my said Invention, and the
manner in which the same is to be performed, are particularly described and
ascertained in and by the following description thereof, reference being had
to the Drawings hereunto annexed, and to the letters and figures marked
thereon (that is to say):-
My Improvements in the Construction of Locks and Latches, applicable for
Doors and other Purposes, consist in certain novel parts adapted to work the
spring bolt of a lock in the accompanying Drawing. Fig. 1 represents
one example of the improvement adapted to a mortice lock, with the
improved parts shewn in their proper situations when quiescent. Fig. 2
represents the novel parts detached. The lock bolt of the ordinary
construction is shewn at a, and b is the private bolt as commonly applied;
the spring bolt is shewn at c, on which the improved parts are intended to
act for the purpose of drawing back the spring bolt by means of an ordinary
handle, knob, or other suitable contrivance. A double-armed lever d, d,
forms part of the piece, called the follow, which works in sockets in the plates
of the lock in the ordinary way; one arm of this lever, d, d, acts against the
crank lever e, hanging upon a pin set in the lock plate at f, and the other arm
of the lever against a pin or stud set is the hinder part of the spring bolt c.
The lower end of the pendant crank lever e, is connected by a joint pin to the
spring bolt at g, and the upper end of this pendant crank lever is acted upon by a
spring h. On turning the follow, by means of a handle or knob, the upper
arm of the follow lever d will rise, and force the pendant crank lever e, into
the position shewn in Fig. 3; the lower arm of the levere having by that
means drawn the spring bolt back so as to allow the door to open. When the
knob or handle of the follow is released, the force of the spring h, acting on
the upper armn of the crank lever e, will bring it and the bolt c again into the
projected and quiescent situation shewn at Fig. 1. The above is one mode
of drawing the spring bolt c back, but if the follow is turned in the reverse
direction, the lower arm of the follow lever d, bearing against a pin i, set
in the hinder part of the spring bolt, will also draw the spring bolt back.
Though I have in the Drawing attached hereto shewn these Improvements
only in connection with a mortice lock, yet I do not intend to confine myself to
that or any other particular construction of locks to which the same contrivance
may be applicable; and therefore particularly desire it to be understood, that
the peculiar features of novelty which I claim under the above in part recited
Letters Patent, are the pendant crank lever, connected in any convenient way

page_text: to the spring bolt, when acted upon by the lever attached to the follow, as above
described, however they may be varied in their forms or positions, if applied to
the same purpose.
In witness whereof, I, the said Jesse Smith, have hereunto set my
hand and seal, this Seventh day of May, in the year of our Lord
One thousand eight hundred and forty-two.
JESSE (L.s.) SMITH.
AND BE IT REMEMBERED, that on the same Seventh day of May, in the
year above-mentioned, the aforesaid Jesse Smith came before our Lady the
Queen in Her Chancery, and acknowledged the Specification aforesaid, and all
and every thing therein contained, in form above written. And also the
Specification aforesaid was stamped according to the tenor of the Statute in
that case made and provided.
Inrolled the Ninth day of May, in the year above written.