Improvements in Single Trigger Double Barrel Guns.
Year: 1897

page_text: Date of Application, 4th Feb., 1897
Complete Specification Left, 4th Nov., 1897-Accepted, 11th Dec., 1897
Improvements in Single Trigger Double Barrel Guns.
THOMAS SOUTHGATE 6. Burton Crescent in the County of London Gun Maker do
hereby declare the nature of this invention to be as follows:-
My invention relates to Single Trigger Double Barrel Guns and provides a means
by which the accidental discharge of the second barrel when the first barrel is fired
is prevented.
In fitting any invention to a double barrel gun I employ a swinging bar pivoted
on the upper surface of the trigger blade with its front end extending to n
projection on the Tumbler of the right lock against which it is pressed by n
spring in such manner that when the gun is cocked the projection on the Tumbler
presses the front end of the swing bar to the left overcoming the spring, and the
back of the swing bar takes its position under the right sear tail. on the first barrel
being fired the projection on the right tumbler is removed and the spring which
actuates the swing bar is allowed to press the said bar over to the left sear tail.
But in order to prevent the said swing bar from engaging the left sear tail too
soon and causing the left barrel to be accidentally discharged I provide a Means by
which the said bar is diverted and directed upwards. A projection is left or fixed
on to the inner surface of the trigger Plate through which a hole is drilled in
a convenient position behind the back end of the swing bar, into which is pivoted
a rotating limb or wheel over which the back end of the swing bar has to pass. The
Baid rotating limb is sloped upwards from right to left. The return on the left
beeing about perpendicular, so that when the end of the swing bar passes 'over
the rotating limb or wheel from right to left the said swing bar is guided by the
sloped upper surface of the rotating limb upwards, previous to taking its place
under the left sear tail, hut when the said swing bar passes back again to the
right the swing har does not rise, but rotates the said limb or wheel by pressing
against its perpendicular side after the swing bar has returned. And rotated or
partly rotated the pivoted limb, the said pivoted limb is brought back to its
normal position by a spring, and the swing bar taking its place under the right
rear tail, the gun is agnin ready for firing
I do not claim the swing har, that is old, I only claim the Means by which it is
prevented from prematurely discharging the second barrel and without having three
Pulls to the trigger.
In the above the left may be substituted for the right where a shooter uses his
left barrel first.
London, February 4th 1897.

page_text: I, THOMAS SouruGATE, of No. 6 Burton Crescent, London, E.C., Gun Maker, do
hereby declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
1
statement:
My invention relates to single trigger double barrel guna, and provides means by
which the accidental discharge of the second barrel, when the first barrel is fired, is
prevented.
In order that my invention may be readily understood I will describe same with
reference to the accompanying drawings, whereon Fig. 1 shows an elevation of so
much of a single trigger double barrelled gun, as will be necessary for the purposes
of this description, the loft haud lock plate having been removed, and the right
hand tuinbler cocked. Fig. 2 is a plan view of the gun shewn at Fig. 1, and with left
hand lock plate in position. Fig. 3 is a perspective view of a part detached. Fig. 4
is a plan view of the lock mechanism where the right hand barrel has been fired.
Fig. 5 is a plan view similar to Fig. 4, but where the trigger has been released
preparatory to firing the left hand barrel, and Figs. 6, 7 and 8 are diagram views
showing relative positions of scars and other parts hereafter referred to.
Similar letters of reference refer to like parts in the several figures of the
drawings.
In the accompanying drawings A is the right hand barrel, A¹ the left hand barrel,
B. B the strikers, C C the right and left tumblers respectively, D D¹ the bridle
pieces, E Ethe.main springs, F' the safety lock, G is the trigger blade, G¹ the
trigger, and G2 the trigger plate; are the sears.
According to my invention I provide a bar J, capable of being rocked on a pivot J¹
upon the upper surface of the trigger blade G; the front end of the rock bar J,
extends to a projection K, upon the tumbler C, of the right hand lock, as shown at
Figa. 1 and 2, against which projection K, it is pressed (in the example shewn) by a
spring L, also carried upon the trigger blade G, and acting against the rock bar in
advance of the pivot J, so that when the gun is cocked the projection K on the
tumbler C prosses the front end of the rock bar J to the left, as at Fig. 2, overcoming
the spring, and causing the rear end of the rock bar J to take its position under
the tail of the right sear H.
'
On the first barrel A being fired the projection K on the right tumbler C is
removed, and the spring L which actuates the rock bar J is allowed to press the said
bar Jover to the tail of the left sear H¹.
In order howevor to prevent the said swing bar J from engaging the left sear tail
too soon, and thereby causing the left barrel A¹ to be accidentally discharged by the
involuntary pull common in all guns, I provide means by which the said bar is
diverted and directed upwards between the sear tails. To this end I provide
projections M formned or fixed on to the inner surface of the trigger plate G², through
which projections Ma hole is drilled in a convenient position behind the back end of
the swing, bar .J. In the holes formed in the projections M, is pivotted a rotating
limb or can wheel N, over which the back end of the swing bar J has to pass. The
rotating wheel or limb N is so fitted, being provided with a stop piece N' Fig. 2, that
it can only be rotated (when in the position Figs. 2 and 3), from left to right, and
the said limb N is sloped upwards on its periphery from right to left, the return on
the left being about perpendicular, so that when the back end of the rock bar J passeв
over the rotating limb or cam wheel N from right to left (looking forward of the gun),
the wheel N does not rotate and the said swing bar J is consequently guided by the
sloped upper surface of the rotating limb, upwards.

page_text: In diagram view Fig. 6 the wheel N is shewn as it would appear looking rearwards
of the gun, and the rock bar J is then under the tail of the sear H; upon the trigger
blade being raised and the right barrel fired, the tail of the rock bar J will then
be guided upwards to between the tails of the sears H H into the position shown at
Figs. 4 and 7. Upon the trigger being released after firing the right barrel, the tai
of the bar J is brought down and passes under the tail of the left sear H', into the
position shewn at Figs. 5 and 8, ready to fire the second barrel A' at the second and
next pull of the trigger.
When the bar J passes back again, on the opening of the gun to the right, into
the position shewn at Fig. 1, the bar J does not rise but rotates the said wheel or
limb N by pressing against its perpendicular side. After the bar J las returned and
in so doing has rotated or partly rotated the pivotted wheel N, the pivotted wheel N
is brought back to its normal position by a spring N, and the rock bar J
taking its place under the right sear tail, the gun, as at Fig. 2, is again ready
for firing.
In the above gun the left may be substituted for the right where a shooter uses
his left barrel first.
'
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that I am aware that
single trigger double barrelled guns are well known, and that many attempts have
been inade to effectually prevent the preinature or accidental discharge of the second
barrel, and I am further aware that broadly a swing or rock bar is not new and I
therefore do not lay claim to such, but what I claim is as follows
I. In single trigger double barrelled guns, a rock bar pivotted on the trigger blade,
rocked in one direction by the cocking of the tumbler, to come below say the right
sear, and noved, when free, towards below the left sear by a spring, in combination
with a cam wheel rotative in one direction only, and having an incline over
which the tail of the rock bar passes on firing the first barrel, whereby the rock
bar is directed upwards to between the sear tails, then descends with the release
of the trigger blade, passes beneath the scar tail for firing the second barrel,
while upon the re-cocking of the tumblers the tail of the rock bar acts on, and
partially rotates the cain wheel in passing over saine, the latter being returned by a
spring, substantially as set forth.
2. In single trigger double barrelled guns, the employment of a partially rotative
spring governed pivotted limb or cam wheel, substantially as and for the purposes
set forth.
4. The particular arrangement and combination of parts composing my improved
single trigger double barrelled gun, all substantially constructed and acting as and
for the purposes described with reference to the accompanying drawings.
Dated this 4th, day of November 1807.
Dated this 4th, day of November 1807.
BREWER & SON,
London & Leeds. Agents for the Applicant.