Year: 1886

page_text: Date of Application, 8th Nov., 1886.
Complete Left, 3rd Aug., 1887.
Complete Accepted, 9th Sept., 1887.
DESEDU
L WILLIAM.NOBBS 01 666 On Kent Road, London, D.E., Gunmaker, do hereby
declare the nature of this invention to be as follows:-
This invention relates to an improvement upon a patent granted to me, and bearing
date March 2nd 1883, No. 1137, for improved means for working cartridge extractors
of break-down guns.
According to that invention, both cartridges of the double-barrelled gun were
simultaneously started on the opening of the gun, and received an impulse to fly out,
but the unfired cartridge was arrested by means of a retaining stop on the "break
off" or action."
By the present invention, the fired cartridge only receives the impulse to fly out,
and consequently the necessity for the retaining stop is removed.
The cartridge extractor is divided to allow of the extractor for each cartridge acting
independently, and the parts described in the above mentioned patent for operating
the extractor are duplicated.
The extractors are controlled in their movements by sears which slide in vertical
guides in the lump. A pin on the outer side of each sear enters a segment-shaped
slot in the "action," and into these slots project horizontal sliding bolts for drawing
the sears out of action when the gun is opened.
The bolts are each secured to the "action" by a screw pin passed through an
elongated hole formed in the bolt, and they are each connected to their respective
tumblers by a pin entering a segment-shaped slot in the head of the bolt.
In the act of opening the gun, the hammers are cocked as usual, and the bolts are
drawn back clear of the extractor sear pins. When, however, one or other of the

page_text: barrels is fired, the descending hammer will thrust forward its bolt, causing it to
enter the groove in which the pin of the sear plays, and overlie that pin. The result
of this will be, that in the act of opening the gun, the bolt will press upon the sear
pin, and thereby draw the sear clear of its extractor, which being now free to act,
will throw out the exploded cartridge. Meanwhile the unexploded cartridge will
have no tendency to fly out of the barrel, the bolt designed to act upon the sear of its
extractor being held back clear of the segment groove in the "action," in which the
sear pin now freely moves during the opening of the gun.
I, WILLIAM NOBBS of 666 Old Kent Road, London, S.E., Gunmaker, do hereby
declare the nature of this invention and in what manner the same is to be performed, 1
to be particularly described and ascertained in and by the following statement :-
This invention relates to an improvement upon a Patent granted to me and bearing
date March 2nd 1883, No. 1137, for "Improved means for working cartridge
extractors of break-down-guns."
According to that Invention, both cartridges of the double-barrelled gun were
simultaneously started on the opening of the gun, and received an impulse to fly out,
'but the unfired cartridge was arrested by means of a retaining stop on the "break off"
or "action."
By the present Invention the fired cartridge only receives the impulse to fly out,
and consequently the necessity for the retaining stop is removed.
The cartridge extractor is divided to allow of the extractor for each cartridge acting
independently, and the parts described in the above mentioned Patent for operating
the extractor are duplicated.
The manner of carrying out my Invention is clearly illustrated in the accompanying
drawing.
Fig. 1 is a side view partly in section of a double-barrelled break-down gun with
my improvements applied thereto, the near lock plate and its fittings being removed
to shew more clearly the construction of the parts for effecting the discharge of the
exploded cartridge from the barrel.
In this figure the hammer is in the cocked position.

page_text: Fig. 2 is an inverted plan view of the breech end, of the barrels.
Fig. 3 is a partial plan view of the "action."
Fig. 4 is a longitudinal section of the same, shewing the hammer in its fired
position, and shewing also the connection of the hammer with a sliding bolt designed
to release a plunger which imparts the requisite impulse to the cartridge extractor for
discharging the exploded cartridge from the gun.
Fig. 5 is a cross section taken in the line X-X of figs. 3 and 4.
Fig. 6 is an elevation of the breech end of the barrels, shewing them fitted with a
divided extractor.
In these views, A is the "action," B the barrels ; C is the fore end, and D one of
the lock plates carrying the hammer E.-F F' are the extractors, which, although
moving together at the commencement of their motion, are made capable of
independent action.
The extractors F F are controlled in their movement by sears G G³, one of which
is shewn detached at Fig. 7. These scars slide in vertical guides in the lump below
the barrels (see figs. 1 and 2), and enter notches in the rods of their respective
extractors. A pin on the outer side of each scar enters one or other of the segment
shaped slots Ha' formed in the "action," and into these slots also project horizontal
sliding bolts 1 I' for drawing the sears clear of the extractor rods when the gun is
opened.
The bolts II' slide in guides formed in the sides of the locking bolt of the gun, and
are each secured to the "action" by a screw pin passed through an elongated hole
formed in the bolt head. The connection of these sliding bolts with their respective
hammers is effected by a pin projecting from the hammer tail, and entering a slot in
the head of the bolt. The form of this slot is peculiar, the object being to make the
pin of the hammer effective as a propeller of the sliding bolt at the commencement of
the fall of the hammer, and to allow the hammer to complete its descent without the
sliding bolt receiving any further motion. For this purpose, the slot is segment-shaped
for the greater portion of its length, the curve being struck from the centre of motion
of the hammer, and its upper end is inclined from the hammer to present an inclined
surface for the haminer pin to act on. When, therefore, the hammer is cocked by the
act of opening the gun, the pin of the hammer will rise up the curved portion of the
slot in the bolt head, without disturbing its position, and not until the sliding bolt has
performed its office, will the hammer pin draw back the bolt to its quiescent position.
It will be understood that in the act of opening the gun, the hammers are cocked
as usual, and the bolts II' are drawn back clear of the projecting pins of the
sears GG. At the same time the cartridges are started in their barrels, and the
power is obtained, through the compression of the coiled springs, for effecting their
discharge. The means for effecting this I will now explain.
K is a divided plunger fitted in a case K', which is free to slide, for a limited
distance, in guides formed to receive it on the fore end C. Within this case, a pair
of coiled springs K' is placed in rear of the divided plunger, and so arranged that
cach shall act independently on its respective half of the plunger rod.
The fore end C is also fitted with two bell crank levers L L', the lower ends of
which terininate at different levels. The lever L extends up through a slot in the
case, and engages with the divided plunger, while the other lever L' engages only
with the case K. These bell crank levers are each acted upon by a lip in the joint of
the action when the gun is being opened, the lever L, by reason of its extending
down below the lever L', being the first to be acted on. As this lever is tipped,
will thrust back the divided plunger, causing it to start the cartridge extractors.
Immediately following this movement, the bell crank lever L' will cause the case K¹
to follow the movement of the plunger, and thereby compress the coiled springs
.contained in the case, and lying in rear of the divided plunger. By this means, a
propelling power will be obtained sufficient for discharging one or both of the
cartridges from the gun when the extracting mechanism is permitted to act.
On firing one or other of the barrels B, the descending hammer will thrust forward
its bolt I or I', as the case may be, causing it to enter the groove H or H¹ in which

page_text: the pins of the sears G G¹ play, and overlie the pin of that sear which controls the
extractor of the exploded cartridge. The result of this will be that in the act of
opening the gun, the bolt I or I will press upon the sear pin, and thereby cause
the sear to be drawn clear of its extractor, which being now free to act, will, by
the impulse of its compressed spring, transmitted through the plunger, throw out the
exploded cartridge. Meanwhile the unexploded cartridge will have no tendency to
fly out of the barrel, the bolt designed to act upon the rear of its extractor being held
back clear of the segment groove in the "action," in which the sear pin now freely
noves during the opening of the gun. If, however, both cartridges have been fired
previously to the opening of the gun, both extractor mechanisms will act simultaneously
so soon as the barrels are dropped and the extractor. rods are released from their
detaining sears.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I declare that what I claim is :-
The mechanism above described with reference to the accompanying drawing for
retaining and releasing the extractors of double barrelled guns, and allowing them to
act singly or together in the manner and for the purpose above set forth.
ST....1007