close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2108130

код для вставки
Feb. 15,1938.
2,108,130
as. LEWIS
EXTRACTOR MECHANISM FOR BREAKDOWN FIREARMS
Filed Feb. '7', 1935
5539 Z745 Z542 6@5305?
33
4
z
,
00
m
w.
5152/63
2 Sheets-Sheet 1
Feb. 15, 1938.
2,108,130
G, s, LEw|s
EXTRACIOR MECHANISM FOR BREAKDOWN FIREARMS
Filed Feb. 7. 1955
i
0
2 Sheets-Sheet 2
2,108,130
Patented Feb. 15, 1938
UNITE
T alt FFEQE
STATES
2,108,130
EXTRACTOR MECHANISM FOR BREAK
DOWN FIREARMS
George S. Lewis, New Haven, Conn, assignor to
Winchester Repeating Arms Company, New
' Haven, Conn, a corporation of Maryland
Application February '7, 1935, Serial No. 5,417
6 Claims. (CI. 42?46)
This invention relates to an improvement in
extractor mechanism for breakdown ?rearms,
that is to say, cartridge-extractor mechanism for
that class of ?rearms in which a barrel-unit and
a butt-unit are hinged together for relative piv
otal movement.
One of the objects of the present invention is
to provide a superior extractor mechanism for
?rearms of the class referred to and characterized
10
by reliability and effectiveness.
A further object is to provide a superior ex
tractor mechanism for breakdown ?rearms which
will positively lcosen and retract tight-?tting
cartridges from the cartridge-chamber of the ex
tractor.
Another object is to provide a breakdown ?re
arm with superior extractor means which will
normally also discharge the function of an ejector.
A still further object is to produce, at a low
cost for manufacture, a superior extractor mech
anism for ?rearms of the class referred to which
is both spring-actuated and positively actuated.
With the above and other objects in view, as
will appear to those skilled in the art from the
13 5 following, considered in conjunction with the ac
companying drawings and appended claims, the
present invention includes. all features disclosed
therein which are novel over the prior art.
In the accompanying drawings:
35)
Fig. 1 is a broken View in side elevation of a
breakdown shotgun embodying the present in
vention;
Fig. 2 is a broken view thereof partly in side
elevation and partly in vertical longitudinal sec
tion;
Lil)
Fig. 3 is a view corresponding to Fig. 2 but
showing the barrel-unit swung partway down
wardly toward its full breakdown position with
reference to the butt-unit;
Fig. 4 is a similar view, but showing the barrel
unit moved into its. full breakdown position;
Fig. 5 is a corresponding view showing the ac
tion of the extractor mechanism in positively re
tracting a tight-?tting cartridge;
Fig. 6 is a transverse sectional View taken on
the line ii-ii of Fig. 2;
'
Fig. '7 is a broken view in side elevation of the
rear portion of the barrel;
Fig. 8 is a perspective view of the extractor
plunger; and
shotguns. The rear unit of the ?rearm may, for
convenience of description, be designated as the
?butt-unit? and comprises in the main a frame
26 and a buttstock 2|. The complementary front
unit of the ?rearm, designated for convenience
of description as the ?barrel-unit,? comprises in
the main a barrel 22 and a forestock 23 secured
to the under side of the said barrel.
The frame 26 is formed with an upwardly-op
ening recess or pocket 2t receiving a barrelcoupling lug 25 forming a rigid feature of and
depending from the under side of the barrel 22
adjacent the rear end of the latter. The forward
edge of the said lug 25 is formed with a trans
verse forwardly-opening notch 25 (Fig. 7) receiving a fulcrum-pin 27 extending transversely
through the forward end of the frame 20 and
forming a ?xed feature thereof. The forward
end of the frame it is shaped to form a cylin
drically-contoured bearing-surface 28 having its
central axis coinciding with the central axis of
the fulcrum-pin before referred to.
Conforming in curvature to and normally en
gaging with the bearing-surface 28 of the frame
5
1o
1.)
30
28 is a forestock-shoe, generally designated by
the numeral 2% and forming a ?xed feature of
the forestock 23, before referred to. The barrel
coupling lug 25 is bifurcated in any suitable man
ner to provide a downwardly-opening slot or re
cess 35.3 extending longitudinally completely there- so
through from one end to the other thereof.
At the rear end of its bore 3|, the barrel 22 is
formed with a coaxial cartridge-chamber 32 con
nected by a notch-like vertical passage 33 with
the recess 38 and terminating at its. rear end in? 3;
an annular cartridge-rim seat 34. Normally po
sitioned in the passage 33, between the cartridge
chamber 32 and the recess 3!], is an extractor-arm
35 upstanding from the rear end of a plate-like
extractor 36 mounted for reciprocation in the upper portion of the said recess 36 of the barrel
.r;
coupling lug 25. The extractor 35, just referred
to, is formed with a forwardly-facing spring-seat
37, a rearwardly-facing latch~shoulder 38 and a
rearwardly-facing stop-shoulder 3.9.
The upper 4,;
rear corner of the extractor-arm 35 of the extrac
tor 36 is notched as at if) to- conform the said arm
to the shape of the barrel adjacent the cartridge
rim seat 34 and resulting in the formation of an
upstanding extractor-?nger ?1!.
50
sen for illustration includes. two major units
Also located in the recess 35 of the barrel-cou
pling lug 25 is a plate-like latch 42 mounted for
pivotal movement upon a in 43 extending trans
pivoted for swinging movement with respect to
versely through the side walls of the said lug. The
each other in the general manner of breakdown
forward edge'of the latch 42, just referred to, is=?"55
Fig. 9 is a similar View of the extractor-latch.
The particular breakdown firearm herein cho
2
2,108,130
formed with a notch 44 receiving the rear por
tion of the fulcrum-pin 21 when the latch is in
its normal position, and resulting? in the provi?
sion of a forwardly-extending actuating-?nger
45 engageable on occasion with a sloping actu
ating-abutment 66 forming part of the forward
wall of the pocket Ed in the frame 20.
The latch � above described in part is also
formed with an upwardly-projecting latch-nose
10 41, with a rearwardly-facing sloping thrust-sur
face or shoulder 48 merging in its upper end into
a rearwardly-facing spring-seat �. Positioned
in the upper portion of the recess 30 is a helical
actuating-spring 5G bearing at its rear end
against the spring-seat 3? of the extractor 36, and
at its forward end against the spring-seat 49 of
the latch 42 and exerting a constant effort to
slide the said extractor 36 rearwardly and to
swing the latch 42 in a counter-clockwise direc
tion as viewed in the drawings.
The lower rear portion of the recess 38 of the
lug 25 is closed by a guide-plate 5!, which is se~
cured in place by pins 52?52 extending trans~
versely through both the said guide-plate 5i and
the said lug 25. The guide-plate 5!, in addi
tion to serving as a bottom-bearing for the extrac
tor 36, also serves to limit the rearward movement
thereof by being formed with a forwardly-facing
stop-shoulder 53 engageable on occasion by the
30 stop-shoulder 39 of the said extractor. After
ating-?nger 45 of the said latch will engage with
the actuating-abutment 46 of the frame 20, with
the effect, as the movement of the barrel-unit
continues, of swinging the said latch in a clock
wise direction relative to the barrel-unit and ulti
mately disengaging the said latch-nose 47 from
the latch-shoulder 38. The described disengage
ment of the latch-nose will permit the extractor
35 to be snapped rearwardly by the actuating
spring 52%, with the eifect, under normal condi 10
tions, of ?ipping the cartridge 6!] rearwardly over
the standing-breech 55 and completely out of the
cartridge-chamber 32 of the barrel 22. The rear
ward travel of the extractor as just described will
be checked or limited by the engagement of its
stop-shoulder 39 with the stop-shoulder 53 of the
guide-plate 5!.
The extractor thus, in addition to functioning
as an extractor, also serves as an ejector by ?ip
ping the cartridges clear of the gun, as described.
It will be understood that by the time the latch
nose �'l is disengaged from the latch-shoulder
38, the rear end of the barrel-unit will have
swung upwardly to a degree suflicient to enable
the cartridge 65! to be snapped rearwardly over
the standing-breech 55 and without striking the
same.
The parts will now have assumed the positions
in which they are shown in Fig. 4, save that the
cartridge is shown at the instant before its com 3O
being released in a manner as will hereinafter ap
plete ejection.
pear, the extractor 36 is retired forwarc?y against
the urge of the actuating-spring 50, to align its
notch 40 with the cartridge-rim seat 36, by the en
gagement of the sloping rear edge 54 of the ex
tractor with the upstanding face 55 of the frame
20, which constitutes the standing-breech of the
?rearm.
The rear edge of the barrel-coupling lug 25,
When the barrel-unit is again swung so as to
restore the two units to the positions in which
they are shown in Figs. 1 and 2, the rear edge
54% of the extractor will engage with the standing
breech 55 and be retired forwardly thereby
against the urge of the actuating-spring 50. Sim
ilarly, the closing of the ?rearm will cause the
actuating-?nger � of the latch 42 to move away
from the actuating-abutment � of the frame and
thus permit the actuating-spring to also swing the
40 as well as a portion of the guide-plate 5i car
ried thereby, is cut away to form a notch 56
adapted to receive the locking-nose 5?? of a re
tractable barrel-locking member 58 mounted in
the frame 23 to the rear of the standing-breech
55 thereof. When the barrel-unit is in its closed
position, as illustrated in Figs. 1 and 2, the nose
said latch in a counter-clockwise direction, as
required to re-interpose its nose 43-7 in the path of
the latch-shoulder 38 of the said extractor, pre
paratory to another ?ring and subsequent open
into the notch 56, serves to releasably lock the two
units in the position shown, in readiness for ?ring
ing of the ?rearm.
In the event that the cartridge, such as 60, is
so ?rmly held in the cartridge-chamber 32 of
the barrel 22 as not to respond to the urge of the
the arm.
actuating~spring 50 when the gun is broken down I
After the gun has been fired, the barrel-locking
member 58 is retired in any approved manner,
such, for instance, as by a swinging-lever 59, to
thus permit the barrel-unit to be swung with re?
spect to the butt-unit around the fulcrum-pin 2';
from the position in which it is shown in Figs. 1
and 2 toward its full breakdown position shown in
Fig. 4. If the cartridge 65} in the cartridge-cham~
in the normal manner, the engagement of the
actuating-?nger 45 of the latch 42 with the ac
tuating-abutment d6 of the frame will cause the
thrust-surface or shoulder :38 of the said latch to
engage the rear edge of the extractor 36 and
positively move the same rearwardly and effec
tively break the hold or grip of the cartridge 60
upon the wall of the cartridge-chamber 32. Us
ually, once this grip has been broken in the
manner described, the actuating-spring 5!] will 60
possess sufficient power to then drive the said
extractor rearwardly until the latch-shoulder 38
of the extractor engages with the latch-nose 4'!
of the latch 52. In the continued swinging move
ment of the barrel-unit and after the rear end
of the latter has been elevated su?iciently to in~
sure a clear rearward path for the cartridge be?
5'! of the said barrel-locking member 58, by entry
her 32 of the barrel 22 lies in the said chamber in a
normal and relatively-readily-displaceable man
ner, the initial downward swinging movement of
the barrel-unit with respect to the butt-unit will
permit the actuating-spring 58 to move the ex
tractor 38 rearwardly and correspondingly move
65 the cartridge Elli, as indicated in Fig. 3 of the draw
ings. This movement of the extractor 313 and of
the cartridge Gil as just described will continue
under the urge of the actuating-spring 53 until
the latch-shoulder 33 of the said extractor 36
70 moves into engagement with the latch-nose ill? of
the latch 42 (Fig. 3).
At about the time that the extractor 36 has
moved rearwardly sufficiently to engage its latch
shoulder 38 with the nose Ill? of the latch 42, as
75 just above described, the forward face of the actu
ing ejected, the latch-nose til will be disengaged
from the latch-shoulder 33 of the ejector and
permit the actuating-spring 59 to assert itself to
snap the said extractor rearwardly until its stop
shoulder 39 engages the stop-shoulder 53 of the
guide-plate 5!, thus ?ipping the cartridge com
pletely out of the cartridge-chamber 32 and clear
of the ?rearm.
75
3
2,108,180
From the foregoing, it will be seen that in a
simple and effective manner the extraction of a
cartridge from the ?rearm is e?ected positively
in the event that the spring-means is not sul?
ciently strong for the task. It will be further
noted that by the ingenious arrangement of the
parts, the actuating-spring 5|] is caused to dis
charge the double function of moving both the
extractor 35 and the latch 42.
The invention may be carried out in other spe
10
ci?c ways than those herein set forth Without
departing from the vspirit and essential charac
teristics of the invention, and the present embodi
ments are, therefore, to be considered in all re~
15 spects as illustrative and not restrictive, and all
changes coming within the meaning and equiv
alency range of the appended claims are intended
to be embraced therein.
20
I claim:
1. In a breakdown ?rearm, the combination
with a butt-unit and a complementary barrel
unit having a cartridge-chamber; transversely
extending pivot-means pivoting the said barrel
providing anti-rotational guide-means; a plate
like reciprocating cartridge-extractor mounted
in the longitudinal slot of the said depending
lug and held against rotation by the parallel side
walls thereof; a plate-like latch also mounted in
the longitudinal slot of the said lug and having
a thrust-surface engageable with the said plate
like extractor to positively move the same and
also having a detent releasably engageable with
the extractor; a spring acting to urge the said
extractor into its cartridge-extracting position
and at the same time acting to urge the detent
of the said latch into position for engagement
with the said extractor; and means coacting
with the said latch upon the breakdown of the
said ?rearm and moving the said latch in a di
rection to engage its thrust-surface with the said
extractor and to disengage its detent therefrom.
4. In a breakdown ?rearm, the combination
with a butt-unit; of a complementary barrel
unit having a cartridge-chamber and pivoted to
the said butt-unit; a lug depending from the said
barrel-unit and formed with a downwardly?open
25 tridge-extractor for extracting cartridges from
ing longitudinal slot; a reciprocable cartridge
extractor having a vertically-offsetting spring
the cartridge-chamber of the said barrel~unit;
spring-means urging the said reciprocable car
tridge-extractor into its cartridge-extracting po
abutment and mounted in the slot of the said de
pending lug; a pivotal latch also mounted in the
slot of the said lug and having a spring-abut
sition; a pivotal latch having a thrust-shoulder
ment and a thrust-surface engageable with the
extending upwardly in a position rearwardly of
the said pivot-means engageable with the said
said reciprocable extractor to positively move the _
unit to the said butt-unit; of a reciprocable car
reciprocable extractor to positively move the same
and also having a detent rigid with respect to
the said thrust-shoulder and releasably engaged
35 with the extractor to restrain the movement of
the same under the urge of the said spring
means; and means coacting with the said pivotal
latch upon the breakdown of the ?rearm and
swinging the said pivotal latch in a direction to
engage its thrust-shoulder with the said extrac
tor and to disengage its detent therefrom.
2. In a breakdown ?rearm, the combination
with a butt-unit; of a complementary barrel
unit having a cartridge-chamber and pivoted to
45 the said butt-unit; a lug depending from the said
barrel-unit and formed with a downwardly-open
ing longitudinal slot having parallel side-walls
providing anti-rotational guide-means; a recip
rocating cartridge-extractor of polygonal form
same and also having a detent releasably engage
able with the reciprocable extractor; a spring also
positioned in the said slot and bearing at one
end against the offsetting spring-abutment of
the said reciprocable extractor and at its oppo
site end against the spring-abutment of the said
latch; and means coacting with the said pivotal
latch upon the breakdown of the said ?rearm
and moving the said latch in a direction to en
gage its thrust-surface with the said reciprocable
extractor and to disengage its detent therefrom.
5. In a breakdown ?rearm, the combination
with a butt-unit and a complementary barrel
unit having a cartridge-chamber and pivoted to
the said butt-unit; of a cartridge-extractor for 45
extracting cartridges from the cartridge-cham
ber of the said barrel-unit; a unitary latch formed
of plate-metal and having a thrust-shoulder en
gageable with the said extractor to positively
50 in cross section mounted in the slot of the said
move the same and also having a rigid upwardly
depending-lug and held against rotation by the
parallel side-walls thereof; spring-means also
the extractor; and a spring acting to urge the
mounted in the slot of the said lug and urging the
said extractor into its'cartridge-extracting posi
said cartridge-extractor into its cartridge-ex
tion and at the same time acting to urge the de
tent of the said latch into position for engage 55
ment with the said extractor.
6. In a breakdown ?rearm, the combination
with a butt-unit and a complementary barrel
55 tracting position; a latch housed Within the slot
of the said lug and having a thrust-shoulder en
gageable with the said cartridge-extractor to
positively move the same and also having a detent
releasably engageable with the extractor; and
60 means coacting with the said latch upon the
breakdown of the ?rearm and moving the said
extending detent-lock releasably engageable with
50
unit having a cartridge-chamber and pivoted to
the said butt-unit; of a lug depending from the
said barrel-unit and formed with a downwardly
latch in a direction to engage its thrust-shoulder
opening longitudinal slot; a cartridge-extractor
with the said cartridge-extractor and to disen
gage its detent therefrom.
3. In a breakdown ?rearm, the combination
65
with a butt-unit; of a complementary barrel
unit having a cartridge-chamber and pivoted to
the said butt-unit; a lug depending from the said
barrel-unit and formed with a downwardly-open
70 ing longitudinal slot having parallel side-walls
of polygonal form in cross section and movable
in the longitudinal slot of the said depending lug
and of such proportions as to be introducible 65
into the said longitudinal slot through the open
lower end thereof; and a guide-plate installed
in the downwardly-opening longitudinal slot in
the said lug at a point below the said extractor.
GEORGE S. LEWIS.
70
Документ
Категория
Без категории
Просмотров
0
Размер файла
678 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа