Improvements in the Extractor Mechanism of Drop Down Small Arms.
Year: 1890

page_text: Date of Application, 5th Aug., 1890
Complete Specification Left, 5th May, 1891-Accepted, 4th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in the Extractor Mechanism of Drop Down Small
Arms.
I, RICHARD TRULOCK of 13, Parliament Street Dublin, Ireland, Gun
Manufacturer do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the extracting mechanism of drop
down small arms, whereby the case of the discharged cartridge can be readily and
completely ejected on the raising, or opening of the breech, and furthermore
whereby an individual spent cartridge case (where double barrels are used) may be
ejected without disturbing the unexploded cartridge in the second barrel.
In carrying out my invention I employ the ordinary mechanism for starting the
cartridge case, whereby the same is simply pushed a short distance on the raising
of the breech, and its complete removal effected by hand.
In carrying out my invention I use two movable, cams oscillating on one
transverse spindle fixed in the knuckle, or breast of the fore-end; and also two
suitable scars oscillating on same spindle.
in
These cams act upon, and push back two strikers, or cocks pivoted on a secend
transverse spindle, into what is known as a "bent" whereupon the scars engage
said strikers, or cocks and maintain same in a fixed position until the cartridge is
discharged.
Double main springs secured to the knuckle press against the strikers, or cocks
which upon being released by the removal of the sears, (caused by the opening of
the breech) strike the aforesaid cams which in turn act upon the ejector and drive
out the empty cartridge.
C
2000
J. K. FAHIE & SON,
9, Westland Row, Dublin, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in the Extractor Mechanism of Drop Down Small
Arms.
I, RICHARD TRULOCK of 13 Parliament Street, Dublin, Ireland, Gun
Manufacturer, 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 the extracting mechanism of drop
down small arms, whereby the case of the discharged cartridge can be readily and
completely ejected on the raising, or opening of the breech, and furthermore
whereby an individual spent cartridge case (where double barrels are used) may
be ejected without disturbing the unexploded cartridge in the second barrel.
In carrying out my invention I employ the ordinary mechanism for starting the
cartridge case, whereby the same is simply pushed a short distance on the raising
of the breech, and its complete removal effected by hand.
In my invention I use two movable cams oscillating on one transverse spindle
fixed in the knuckle, and also two suitable scars oscillating on same spindle.
These cains act upon, and push back two strikers, pivoted on a second transverse
spindle, into what is known as a "bent," whereupon the sears engage in said strikers
until the cartridge is discharged.
Double main springs secured to the knuckle act upon the strikers, which latter

page_text: upon being released by the removal of the scars (caused by the opening of the
breech) strike the aforesaid cams, which in turn act upon the ejector and drive out
the empty cartridge.
In order that my said invention may be more readily understood, I will describe
the accompanying drawings.
Fig. 1, is a longitudinal section showing my improved ejector mechanism, and
the stock mechanism for actuating same in position before discharge of cartridge:
Fig. 2, is a similar view showing breech open and position of mechanism after
ejection of cartridge;
Fig. 3, is a view of under side of knuckle and ejector mechanism;
Fig. 4, shows the face of same;
Fig. 5, and 6, show in detail side and front views of the ejector sears;
Fig. 7, detail view of cam, and
Fig. 8, detail view of striker;
Fig. 9, is a similar view to Fig. 1, showing an alternative spring arrangement;
and
Fig. 10, is an edge view of cocking lever..
The action of my invention may be briefly described thus.
The starting of the cartridge case is accomplished by mechanism of well known
construction, and need not be here described.
Its complete ejection from the barrel is as follows:-
The cocking lever a, is capable of movement in a longitudinal direction, effected
by a projection a', sliding in an inclined recess a in the stock.
In the position shown in Fig. 1, the hammer has fallen bearing down the tail of
the cocking lever, and thrusting same forward to a position in which it is ready to
engage the ejector mechanism on the opening of the breech Fig. 2. The free end
of the cocking lever upon entering the slot b, in the face of the knuckle engages
the nose of the scar by means of a projection a³, tilting the sear upwards, and
releasing the striker d, which being acted upon by the spring d', strikes the cam e,
which in turu strikes the ejector rod f, and drives out the empty cartridge case.
In closing the breech the action of the mechanism is the reverse of that just
described.
The ejector in being pressed home forces back the cam e, which drives the
striker into the "bent," the sear meantime being brought into position by a small
coil spring arranged underneath, and engages the striker until the action is
repeated.
Returning to the cocking lever it must be understood that the ejector mechanism
herein described will not be actuated until the hammer falls. In the movement of
opening the breech, the fore end of the cocking lever is pressed down in the usual
way, causing its tail to rise in the inclined recess, and throw back the hammer to
cock, while at the same time the lever moves inwards, or backwards in the stock,
thus freeing the projection on its end from contact with the ejector mechanism.
The barrels may therefore be raised any number of times without ejecting the
unexploded cartridge, but when the gun is fired the hammer pressing down the tail
of tlie lever establishes communication with the ejector scars in the manner
described.
The invention is equally applicable to single and double barrel "drop down"
guns, in the latter case all the parts are duplicated so that the mechanism for each
barrel will act independently, and consequently if only one cartridge is exploded
the case of same will be ejected without disturbing the unexploded cartridge.
Instead of the main spring d' above described I may use a coil spring as shown
¡n Fig. 10.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is.
First. In drop down guns, the improved means for effecting the reciprocating

page_text: motion of the cocking lever, namely the projection a', sliding in the inclined
recess a³, and acted upon by the hammer so as to throw said lever into and out of
range with the ejector mechanism, substantially in the manner herein described and
set forth.
Second. In drop down guns the combination of parts constituting the ejector
mechanism namely the sear c, the cam e, the striker d, for the purpose of ejecting
the cartridge, from the barrels, by the action of opening the breech, all arranged,
and operating substantially in the manner herein specified and set forth.
Dated this 4th day of May 1891.
J. K. FAHIE & SON,
9, Westland Row, Dublin, Agents for Applicant,
J. K. FAHIE & SON,
9, Westland Row, Dublin, Agents for Applicant,