Improvements in One-trigger Double-barrelled Breech-loading Guns.
Year: 1897

page_text: Date of Application, 19th June, 1897-Accepted, 31st July, 1897
COMPLETE SPECIFICATION.
Improvements in One-trigger Double-barrelled Breech-loading
Guns.
EDWINSON CHARLES GREEN Gun Maker, 87 High Street Cheltenham FREDERICK
GREEN Gun Maker, 87 High Street Cheltenham 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 One Trigger Double Barrelled Breech
Loading Guns, and has for its object a simple method for firing alternately both.
Barrels of Double Guns by the Aid of One Trigger; with devices for preventing
what is known as the involuntary discharge of the Second barrel when only one is
intended to be fired.
Also arrangements by which the user can alter the order of Firing from Right to.
Left or vice versa.
Also a method by which the "Pull off" of the Gun can be altered.
In a rectangular opening formed in the Trigger Blade we pivot on a Pin, a Movable
Limb, capable of a rocking motion from right to left, and vice versa, and so formed as
to be able to operate alternately both sears.
In the top of this Trigger Limb is drilled a conical hole, made to receive a
correspondingly shaped Peg.
To the front of the Trigger we also attach by the aid of a Pin, a flat Spring.
This Spring is provided with a Spur on each side, also with a Semi-circular or
inclined Head, together with a projecting Peg, made to engage in the Conical hole of
the Movable Pimb, which it is made to operate.
The projecting leg of the Safety Slide is fork-shaped, and to the usual Spring Stop
on its Bar we add an additional Stop, and by the aid of extra travel of the Safety Slide.
which is operated by the outside Push Thumbpiece coming in contact with the Spurs
of the Spring, throws the Movable Limb to the opposite side and so reverses the order
of firing, and enables the Shooter to fire whichever Barrel he chooses.
The Safety Slide is pushed back in the usual manner by any of the Customary
levers employed in operating the Breech Bolt used for securing the Barrels and Breech
of the Gun.
An important part of this invention is the Mechanism provided to prevent the sudden
or involuntary discharge of the Second Barrel.
This is prevented by either of the following intermediate Stops or Checks.
A Swinging Arm is mounted on a Pin, and through a Slot in the rear of the Guard;.
the lower end being kept in position by a Spring; the upward end is suitably shaped
and made to engage when the Gun is fired on a raised part of the Trigger Blade.
Upon firing the Gun the recoil forces the Finger against this movable Piece, the Toe
of which is carried over the Trigger Blade holding it down thereby acting as a
momentary Safety Stop.
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Secondly The Guard itself is mounted to have a sliding motion, and is kept in its
normal position by the aid of a Spring, and its Toe made at the moment of firing to
slide over the Trigger Blade by the Finger coming in contact with the back of the
Guard.

page_text: :
Thirdly We mount on the Trigger Plate, in the rear of the Trigger Blade, a
Sliding Bolt with a Spring; the Bolt on firing the Gun is forced forward over the lower
edge of the Trigger Blade momentarily retarding the return of the Trigger. The
Bolt is returned by the Spring.
Fourthly: We inount on a Pin in a slot on the inside of the Trigger Plate, at the rear
of the Trigger, a Small Dog, which is kept in position by the Stud of a Spring engaging
in an inclined Notch formed on the side of the Dog. On the back end of the Trigger
Blade is formed.a pointed projection which upon pressing the Trigger momentarily
engages with the Dog, to which it imparts a rebounding motion and at the moment.
of discharge the Dog retards the return of the Trigger.
To lighten the 'pulls off' of the Locks we form a raised part on the Trigger Plate,
through which and the Trigger we drill three or more small Trigger pin holes; by
moving the Trigger pin to either of the back holes the "pull off" is thereby considerably
lightened.
The arrangements may be altered in detail, but generally we prefer the
following
Figure I. -Shows the Side Elevation of the Gun herein described, also Two bolts for
preventing the Involuntary discharge.
Figure II. The side and end view of the Trigger, also components parts.
Figure III. The Sears and Trigger in position for firing Right Sear first, and
another view of the Right sear fired and in position for firing the Left.
Figure IV. The working parts of two Methods for preventing the involuntary
discharge.
Figure V. The Trigger and Component parts, also two end views of the mechanism
according to our second arrangement.
Figure VI. The fork shaped Safety Slide with the additional Notch, also the
Side Safety Thumbpiece adapted to working the Safe and Selective Action as
described.
Figure VII. The Trigger and Plate with Holes, for altering the leverage of
Trigger.
Figure VIII. An end view of Guard showing Slot through which the Swinging Arm
described works.
Upon pressing the Lever A Fig. I, to open the Breech of the Gun, the Safety
Slide B is pressed back over two Safety Studs C formed on the Trigger Blade, also
against the right Spur D, Fig. II, of the pivotted Spring E, which thereby forces the
movable limb F under the right sear G Fig. III. The Safety Slide B, is forced to the
Notch H, and upon the Trigger I being pulled the Movable Limb F is brought in con-
tact with the Sear G thereby releasing the Tumbler and allowing it to fall for the
firing of the Gun in the ordinary manner.
The locks of the Gun are what is known as "false.gated" and are put into their
normal position after being fired, by the opening of the Gun. Upon releasing the
Trigger I, the movable Limb F, together with the pivotted Spring E, is forced over
by the inclined end of the Sear G under the left Sear J, and into position for firing
the left Barrel as Shown in Figure III, or, instead of the foregoing, we mount on the
Sear ends G¹ Fig. V Sockets K with inclined ends and kept in their normal position
by springs L.
To the Trigger I Fig. V we fit a swinging Bar M with a circular Head at one end
and a Spur or Projection on each side which is pivotted to the Trigger I with a pin.
The Safety Slide and the method employed to obtain the Selective Action is the same
as before described. Upon releasing the Safety Slde B' and pressing the Trigger I'
Fig.V, the projection on the Swinging Bar M, is brought into contact with the Socket K
of the Sear (, thereby releasing the Tumbler and allowing it to fall in the usual way.
Upon releasing the Trigger I' the "false-gating" of the right sear G' with the aid of its
Spring Socket K forces the Swinging Bar M over into position for firing the left lock
and its Socket K as shown in Fig. V.
To enable the Shooter to fire the Left Barrel first or vice versa, we construct our
Safety Slides B and B' so as to be capable of additional travel, than is usual with

page_text: ordinary Guns. Upon pressing the Thumbpiece with the Safety Slide B or B¹ home
to Notch N Fig. I, the leg of the Safety Slide B or B¹ is brought in contact with the
Spur O Fig. II. or O₁ Fig. V, thereby forcing it and the Movable Limb For the
Swinging Bar M under the Left Sear J Fig. III or G¹ Fig. V and in position to fire
the Left Barrel first followed by the Right.
The foregoing description refers to the ordinary Detachable side-lock pattern
Hammerless Guns, but our Invention is also applicable to the "boxed in Lock
pattern.
The Optional or Selective Method of firing can be operated either by the ordinary
Top Safety-Thumb-Slide, or hy one mounted on the side of the Head of the Gun as
shown by P in Fig. V.
Fig. VI P Shows the detached side Safety Thumbpiece, and the Slotted recess Q in
the Safety Leg into which the Cross arm of P is fitted. The Safety Slide is fitted
with the extra stop Notch N and is forced back into its Safe position in the usual
manner by the Top Lever. To "unsafe" it the Thumbpiece forces the Safety Slide
to Notch H when the Gun can be fired, but when it is required to fire the Left Barrel
first, the Safety Slide is forced by the Side Thumbpiece P, to Notch N making the
forked leg engage with the Spurs as before described.
To lighten the "pull off" of the locks we form a raised part on the Trigger
Plate W Fig. 7 through which we drill the pin holes X Fig. 7 by moving the
Trigger pin to either of the Back holes the leverage is altered and the "pull off" is
thereby considerably lightened.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is :-
1. The Combination of the Single Trigger mechanism constructed and operating
substantially as herein before described and illustrated in the accompanying
drawings.
2. The Combination and means described and illustrated in Figures 1 and 4 to prevent
the discharge of both Barrels by one pull of the Trigger.
3. The use and Combination of the Top or Side Push Safety Slides with their
various operating Limbs as herein described and illustrated to give the Selective Action.
Also upon opening the Gun Breech to put the various working parts in their normal
position for firing the Gun.
Doted this 16th day of Tuna 1907