IMPROVEMENTS IN THE CONSTRUCTION OF Locks
Year: 1842

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPH
Rock, Junior, of Birmingham, in the County of Warwick, Factor, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Twenty-ninth day of December, in the sixth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Joseph Rock, Her especial licence, full power, sole privilege and authority,
that I, the said Joseph Rock, my exors, adññors, and assigns, or such others
as I, the said Joseph Rock, my exors, adñññors, 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 "IMPROVEMENTS IN THE CONSTRUCTION OF Locks;" in which
said Letters Patent is contained a proviso that I, the said Joseph Rock,
shall cause a particular description of the nature of my said Invention, and
in what manner the same is to be performed, to be inrolled in Her said
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.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Joseph Rock, do hereby declare that the nature of my said Invention, and the
manner in which the same is to be performed, are fully described and ascer
tained in and by the following statement thereof, reference being had to the

page_text: Drawing hereunto annexed, and to the figures and letters marked thereon
(that is to say)-
My Invention relates,-
First, to a mode of applying friction rollers to the tumblers of tumbler
locks.
Secondly, my Invention relates to applying friction rollers to the sliding
bolts of back spring locks, so as to facilitate their movements in the act of
locking or unlocking.
Thirdly, my Invention relates to the application of a connecting link or
crank to ease the friction in locking or unlocking; and,
Fourthly, my Invention relates to a mode of applying a stop to a sliding
bolt of a lock.
And in order that my Invention may be most fully understood, and readilly
carried into effect, I will proceed to describe the Drawings hereunto annexed.
DESCRIPTION OF THE DRAWING.
Figure 1 shows the interior of a lock constructed according to the first part
of my Invention, and consists of applying a friction roller to the tumbler, which
moves on an axis carried by the framing, or attached to the interior of the
lock. The nature of the parts of the interior of the lock is clearly shown in
the Drawing, and, with the exception of the mode of applying a friction roller
to the tumbler, the parts are of an ordinary construction, and the arrangement
forms no part of my Invention. And I would state, that the mode of applying a
friction roller to the tumbler is not confined in its application to the particular
arrangement of parts shewn in Figure 1. a is the sliding bolt, which is moved
by the key. is a lever tumbler, moving on an axis at c, carried by the framing
or interior of the lock. The lever tumbler is constantly pressed on by the spring
d, as is shewn. e is a friction roller, turning on an axis affixed to or inserted
in the lever tumbler. f is a stop to prevent the lever tumbler falling too low.
The friction roller is first acted on by the key, before the key comes to act on
the bolt a, and the key cannot act on the bolt a till the roller e is lifted up
and turned by the key, but, owing to the roller e being on an axis, the lifting of
the lever tumbler will be performed with ease.
Figure 2 shows the boit a separate.
Figure 3 shows a side and edge view of the lever tumbler band roller e.
I will now describe the second part of my Invention, which consists of a
mode of applying a friction roller for the sliding bolt to move on, such friction
roller assisting the action of the bolt in locking and unlocking. Figure 4
shows a plan and interior view of a lock; Figure 5 shows an edge view of the

page_text: lock; and Figure 6 shows an interior and an edge view of the case, without
the bolt. is the bolt, with a spring h affixed thereto. i is a friction roller;
moving on air axis affixed to the frame cheek or case of the lock, as is shown.
In the under part of the bolt are formed two curved recesses j, k, and the
key acts on the inclined surface so as to lift or throw the bolt g, and cause it
to rise over the friction roller, and in such manner as to cause one of the curved
recesses to pass away from the roller i, and to bring the other curved recess
over the roller.
In carrying out the second part of my Invention, the friction roller may be
applied to the bolt, and have fixed recesses j, k, as will be understood by
examining the lock shewn at Figures 7, 8, and 9, where the parts are marked
with the same letters of reference as are used in the lock just described; the
only difference being, that the roller is applied to the bolt 9. and the
recesses j, k, are affixed to the case check or frame of the lock, as is shown;
and it is not absolutely necessary that the recesses should be used, as the roller
may be caused to rise and fall over a check stop or bar, as will be understood
on examining the padlock, Figure 10, the bolt of the padlock being shown
separately at Figure 11.
The various Figures of the Drawing show particular constructions of locks
with this second part of my Invention applied thereto; and the arrangements
of the locks, when separate from my improvements, are not new, and conse-
quently form no part of my Invention. And I do not confine myself to the
use of the particular arrangements of locks shewn, as the same may be varied
when applying this second part of my Invention thereto.
I will now describe the third part of my Invention, which is shewn at
Figure 12, applied to that class of lock where the hasp passes through from
the front of the lock; but this part of my Invention is equally applicable
to other arrangements or descriptions of locks, having a similar sliding bolt,
which is lifted by the key when moving the bolt to lock or unlock the same.
Figure 12 shows the interior of the lock. 7 is the sliding bolt, with its spring m
at the end of the bolt; the link n is attached by a pin joint at o, the other end
of the link moving on a pin or axis p. By this arrangement the action of
locking or unlocking is facilitated.
I will now describe the fourth part of my Invention, which relates to a mode
of applying a stop to a sliding bolt, in order to prevent the sliding bolt being
moved back until the stop is raised up. The parts of the lock are arranged
according to one of the modifications of the second part of my Invention.
Figure 13 shows the interior of a lock suitable for a drawer. g is pin affixed
on the bolt, and is a stop which moves on an axis at s or any other suitable

page_text: part of the lock, such stop falling by its own weight on to the pin, there being
a recess or slit in the stop for receiving the pin, as is shown; or the pin may
be put on the under side of the stop, and move in a groove in the bolt.
This part of my Invention is also applicable to other arrangements of locks.
Having thus described the nature of my Invention, and the best means I am
acquainted with for performing the same, I would wish it to be understood that
I do not claim any of the parts separately. But what I claim is,-
First, the mode of applying rollers e to the tumblers of locks, as above
described in respect to Figures 1, 2, and 3.
Secondly, I claim the mode of applying rollers i to locks, whereby the sliding
bolts, when lifted, are facilitated in their being lifted, as described in respect to
Figures 4, 5, 6, 7, 8, 9, 10, and 11.
Thirdly, I claim the mode of applying the connecting link n, as described in
respect to Figure 12; and,
Fourthly, I claim the mode of constructing locks by applying a stop r, as
described in respect to Figure 13.
In witness whereof, I, the said Joseph Rock, have hereunto set my
hand and seal, this Twenty-third day of June, in the year of our Lord
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