Improvements in Double Barrel Guns.
Year: 1897

page_text: Date of Application, 30th June, 1897
Complete Specification Left, 30th Mar., 1898-Accepted, 30th Apr., 1898
PROVIDIUNAL SPECIFICATIVA.
Improvements in Double Barrel Guns.
We, JOSEPH DUKES THOMPSON, of 36, Upper Highgate Street, Birmingham, Gun
Finisher, and WALTER THOMPSON, of 86, Lozells Street, Birmingham, Gun Finisher,
both in the County of Warwick, do hereby declare the nature of this invention
to be as follows:
This invention relates to improvements in double barrel guns and refers more
particularly to such guns having one trigger and our object is primarily to provide.
improved means whereby by choice either one of the two barrels may be fired by
the direct vertical action of the trigger upon the sear levers, or in some cases the
trigger may thus act directly upon intermediate sear lifters, also we provide means
in combination with our improved trigger action whereby simultaneous double
firing is prevented.
In carrying out our invention we provide upon the underside of the trigger plate
a pivotted trigger carrier, which is pivotted at a forward point to the trigger plate
or other adjacent fixed' part, in such a manner that the rear end-to which
the finger trigger is attached-rises and falls practically in or near a vertical line. The
carrier at its rear end is gapped to receive the operating part of the trigger. The
trigger consists of a front curved finger portion, and a rear upward operating arm
which latter may pass up to or through the trigger plate, so that its upper end may
exert a direct vertical lifting action upon the underside of the sear levers or their
intermediate lifters. In its normal position the upper part of the trigger lies
against, or is sunken flush with, the curved formation of the carrier, in which case
the operating arms lie rearward, so that if the finger pull of the trigger be exerted
in an upward direction the carrier and trigger is raised as a whole and in so doing
the projecting operating arm raises one of the sears, or one of the intermediate
lifters as the case inay be. If however the finger pressure be applied below the carrier,
the pivotted trigger is first inoved with a part rotating motion in which the
arm is moved forward a given distance, when by the continued pull of the finger the
carrier is again vertically raised therewith, and the arm in its altered position now
raises the other sear, or its intermediate lifter. A spring is employed to bring back
the finger trigger into its normal position, and a similar spring action is used upon
the carrier. The disposition of the rear end of the two.sear levers is readily effected
by making one a little longer than the other, and providing at the end of each
an inwardly projecting limb which overhangs the positions assumed by the afore-
'said operating arm. Where intermediate sear lifters are used, downward projections
from such may protrude through the trigger plate so as to be operated upon as
before described by the operating arm; or if preferred the arm may pass through
holes in the trigger plate so as to act upon the underside of the lifters.
provide that between the forward and rear lifting points in each case, there shall
We further

page_text: be a fixed stop, so that the arm in its upward movement must positively pass to
the one or the other side thereof, and so discharge the one or the other barrel singly.
Dated this 29th day of June 1897.
CHARLES T. POWELL,
Applicant's Agent.
Improvements in Double Barrel Guns.
We, JOSEPH DUKES Thompson, of 36, Upper Highgate Street, Birmingham, Gun
Finisher, and WALTER THOMPSON, of 86, Lozells. Street, Birmingham, Gun Finisher,
both in the County of Warwick, 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 statement:-
This invention relates to improvements in double barrel guns operated by one
trigger, and our object is primarily to provide improved means whereby at choice
either of the two barrels may be fired by the direct vertical action of the trigger
upon the sear levers or their substitutional equivalents; also to provide means
whereby unintentional double firing is prevented.
$
In order to the more clearly explain the nature of this our invention, we have
appended hereunto and illustrative sheet of drawings, upon which are figures and
numbers of reference, similar numbers referring throughout the several views to the
same thing or part..
1.
Fig. 1, is a side view. showing this our invention; when at rest.
Fig. 2, shows the mechanism as when the right barrel is fired.
Fig. 3, shows the changed" position of mechanism as ready for firing the left
barrel.
Figs. 4 and 5, show detail side and plan views of the trigger.
Figs. Gand-7, show detail end and side views of the trigger pull.
Fig. 8, is a plan view showing the relative position of the two sear levers.
Figs. 9 and 10, are detached side and plan views showing the can stop device
for preventing unintentional firing.
Fig. 1, is a view further explaining the cam stop device..
We have only shown those parts of a gun which are necessary to explain this our
invention.
14, is the action body to which is secured' in the ordinary manner the butt and
also the barrels, and upon which are carried the various firing mechanism.
15, is the trigger plate, to which the trigger blade 16, is pivoted as usual at 17.
The rear part of this trigger blade is gapped to receive the trigger pull 18, which
is pivoted at 19. The upper part of this pull is formed into an arm: 20, whose
point 21, may be brought at will into position beneath either of the sear
levers 22, 23. In a state of rest tho said arm is held beneath the lever 22, by
means of spring 24, but by a pulling pressure upon the pull 18, below the pivot-19-
as indicated for instance by arrow 25-the point 21, is moved forward to the
position beneath the lever 23. 22, is the sear lever for firing right hand barrel,
and 23, is the scar lover for firing the left hand barrel.
Now it will be seen that if the trigger be pulled in the direction of the arrow 26,
the lever, 22 is raised, as shown in Fig. 2, and the right hand barrel is fired; but
if instead of this the trigger is pulled in the direction of arrow 25, the point 21, is
first thrown forward beneath the lever 23, and then the latter is raised, and thereby
the left hand barrel is fired, so that a choice niny be readily made of which barrel
sliall be fired,
..

page_text: Again. Upon the upper side of the trigger plate 15, is provided the camlike
piece 27, which acts in concert with camlike piece 28, upon the side of the arm 20,
in such a manner that upon the upward movement of the trigger the point 21, shall
be compelled to take a position beneath one or the other of the levers 22 or 23,
(see Fig. 11).
Having now particularly described and ascertained the nature of this our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
"
1. In double barrel guns the combination with the trigger blade 16, of the
pivoted trigger pull 18, having arm 20, whose point 21, may be selectively made
to raise sear levers 22, 23, all substantially as set forth and for the purposes specified!
2. In double barrel guns, the combination with the trigger 16, pull 18, having
arm 20, and cam piece 28, of the fixed cam piece. 27, substantially as set forth and
shown, and for the purposes specified.
Dated this 29th day of March 1898.
CHARLES T. POWELL,
Applicants Agent, 12, Cherry Street, Birmingham,