IMPROVEMENTS IN GUN LOCKS
Year: 1865

page_text: LETTERŠ PÅTENT to Daniel Arnold, of Bridge Street, in the Town and
'County of the Town of Cork, Merchant Tailor, for the Invention of
"IMPROVEMENTS IN GUN LOCKS."
Sealed the 19th September 1865, and dated the 24th March 1865.
Sealed the 19th September 1865, and dated the 24th March 1865.
PROVISIONAL SPECIFICATION left by the said Daniel Arnold at the Office
of the Commissioners of Patents, with his Petition, on the 24th March
:1865.
...DANIEL ARNOLD, of Bridge Street, in the Town and County of the Town
of Cork, Merchant Tailor, do hereby declare the nature of the said Invention
for. "IMPROVEMENTS IN GUR LOCKS," to be as follows:
חיי
My, improvements in gun locks. have for object to fix the hammer either
when down on the nipple at half-cock, or it may be in other position, in
such manner that it cannot be moved without first applying the finger to the
trigger, to release it. For this purpose I either form an angular point on the
tumbler which takes into a notch in the sear such that, it holds the tumbler,
and consequently the hammer fixedly, and so that the hammer cannot be
raised or lowered without first detaching the sear from the tumbler, or the
position of the holding parts may be reversed, that is to say, the part formed

page_text: on the sear and the notch or holding part in the tumbler, it may be further
so arranged that the tumbler and hammer will become fixed either in the
down position or in the elevated position, that is to say, at half-cock, or in
other position required. By this arrangement there is no liability to acci-
dental discharge of the gun if the lock be kept at either of the fixed positions!
indicated.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Daniel Arnold in the Great Seal Patent Office on the
23rd September 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, DANIEL
ARNOLD, of Bridge Street, in the Town and County of the Town of Cork,
Merchant Tailor, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date. the Twenty-fourth day of March, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-eighth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Daniel Arnold, Her special licence that I, the said Daniel
Arnold, my executors, administrators, and assigns, or such others as I, the
said Daniel Arnold, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands; and Isle of Man, an Invention for "IM-
PROVEMENTS IN GUN Locks," upon the condition (amongst others) that I, the
said Daniel Arnold, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should particu-
Jarly describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed in the
Great Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Daniel Arnold, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, reference being had to the Sheet of Drawings hereunto annexed,
and to the letters and figures marked thereon (that is to say):
---
My improvements in gun locks have for object to fix the hammer either

page_text: time in order to disengage the nib i from the V notch 7; thus if the gün
be carried at half-cock it is not liable to accidental discharge by any partial
raising of the hammer while being trailed or in passing through hedges.
Figs. 2, 3, and 4 represent another arrangement for securing the lock and
hammer somewhat as before described, but in this case the gun lock is
arranged to be fixed with the hammer down, and also while at full-cock.
The tumbler and searc, are the same as at Fig. 1, with the exception of
the V notch 7, and the angular point of nib i, which are dispensed with.
Fig. 2 represents the lock with the parts as holding the hammer in the down
position; Fig. 3 shows the hammer at full-cock, in which position it is fixed
as will be herein-after explained; while Fig. 4 represents a plan of Figs. 2
and 3. In this arrangement the hammer is held in the down position as
before described by the nib i forming a catch for the part of the tumbler,
and as represented in Fig. 2. The hammer is so held till released by pulling
the trigger, which alone permits the hammer to be cocked. To secure the
hammer at full-cock I fit on the plate m of the lock two small levers p, t,
mounted on fixed fulcra t, t, these levers are jointed together at s, the pin
being fixed in the one and fitted to a slot hole in the other as seen, which
permits their free play on their axes; a spring u pressés constantly on the
joint pin at s, so that the levers p, r, have a constant tendency to assume
their dotted positions seen at Fig. 4. The extreme ends of each of the
levers have cranked ends (parts turned at right angles) which pass through
the lock plate m, the one being a part on which the fingers of the left hand
are pressed while holding the gun in position for discharging, the other, x,
forming a bolt which shoots through the plate m in front of the hammer arm
when it is at full cock, which prevents the hammer falling or the gun being
discharged until the part v be pressed with the fingers of the hand grasping
the gun while in the act of firing; with the hammer at any other position
the bolt is behind the hammer stem or arm, and although pressed outwards
by the spring u, does not interfere with the action of the hammer until it.is
at full cock, immediately on arriving at which the opening in m for the
passage of x is uncovered, when it is shot outwards and retains the hammer
until it is released as described. The dotted lines of the hammer arm and
bolt in Fig. 4 show the different positions of those parts when the hammer
is held or released thereby.
Having described the nature of my Invention, and the manner of performing
the same, I declare that what I claim as my Invention to be protected by the
herein before in part recited Letters Patent is, the arrangement and combi-
nation of parts hercin-before described and represented in the Drawing

page_text: annexed for locking or securing the lock or hammer of a gun for the better
*prevention of accidental discharge.
In witness whereof, I, the said Daniel Arnold, have hereunto set my
hand and seal, this Twentieth day of September, in the year of our
Lord One thousand eight hundred and sixty-five.