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Патент USA US2105752

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Jan. 18, 1938.
` H. F. MossBERG
REPEATING FIREARM
Filed Oct. l, 1935
3 Sheets-Sheet 3
Patented Jan. 18, 1938
2,105,752
UNITED STATESy
PATENT oEFlcE
2,105,752
REPEATING FIREARM
Harold F. Mossberg,.New Haven, Conn., assignor
to O. F. Mossberg- ¿t` Sons„ IncorporatedLNew
Haven, Conn., a' corporation of Connecticut
Application October 1,' 1935, serial No. 43,009'
«
5: Claims. (o1. ‘i2-_1n
`
invention vrelates to' improvements inA in theirapplication as the'pri'or art, will permit.`
repeatingñrearms, and more particularly'to im#
Referring to the drawings, the'barrel I0 has
provements'in cartridge-elevating mechanism to‘ a cartridge-chamber' II andthe rear end of `.the
successively bringthe cartridges into proper posi.: barrel I0 is connected to the receiver I2. Longi
5v, ti'on‘for'insertion inthe cartridge-'chamber'of a'V tudinally sli-dable inthe receiver I2 isa breech
' repeating firearm.
bolt I3` consisting of rear and forward parts
One object of' thisA invention is to provide I4 and I5 swiveled together in a well-known
an improved', positive-acting cartridge-elevating' manner, with their .line of'.sepa1‘ation indicated
mechanism for a'repeating firearm. ,
atl I6. The'vbolt-handle I7 is rigidly secured' to
' Another object of this invention is 'to provide'
10
..
the'.> rear part I4 of the breech-bolt, and the
an improved' positive-acting cartridge-elevating ñring pin I8’is" mounted' to slide inthe breech#
mechanism formed of simple elements readily bolt and to have itscocking-shoulder I9 engage
manufactured and> readily assembled to produce able with the seareshould'er 2@ of theV sear 2'I.
a durable efiicient construction at minimum cost.
i5.,
WithA the' aboveandy other objects in view, this
The sear is actuatable by the trigger _22. g
l
The forward part I5 of the breech-bolt at its
invention' includes 'all' improvements over'the extreme forward face, 23 is provided with a
prior' art which'are disclosed'vin this application. guide-and-retainer channel> 24 (Fig. 8) :formed
ln'the accompanying" drawings, in> which one . by two spaced-apart undercut grooves 2,5; and
wayof 'carrying 'out the invention isY shown for 26 >which form the lower part of the guide-and'
„o illustrative purposes:
Fig. l is a side'elevation of the rear portieriof Qa" repeating firearm with the stock omittedand
illl'i'stratirigv one embodiment of" the presentïn-l
ventionj
„_.7
retainer channel, and two springeextractorñrnl
gers 2l and 28 which respectively providefupper 20
channel portions 29 and .33."> The curved top'
wall 31> may serve as a Vlirnit-shkmlder toglimit
the upward travel of the' rim of a cartridge.' 'A
' Fig.v2.is"a bottom- plan view of Fig. 1;
tubular' magazine 32. secured ’adjacent the for
3' is la longitudinal central vertical section' wardend of the'gun (not shown) extendsrear~
u
of] the construction shown _in'Fig._l1_, wlththe
25
partsf’in' the positions they assume _when the
wardly and is provided 'with the curved 'portion
33. Owing to the length of the tubular magazine
the bolt at 'the startofits forward travel and the'
sprung down a suñicient distance to aid in feed
ing cartridges from the magazine in a manner 30
which is well known. A’bracket 34 is secured to
32', the'portion 33ijthereof is capable of _bein'gj'
f..
elevator about to> effect the lifting of the car
the receiver by screws ' 35,V 36, and 31.
tridee à»
screw 3l' extends through the hole 38' of the' leaf
spring"39 'and serves to'hold the latter clamped
.Y Y
Fig'. y51s a view similar toFig. >3, but. showing
the bolt about midway of its. forward traveland
the cartridge in line with the cartridge-chamber;
Fig. 6 is a transverse` vertical sectionalv view
onV line tij-6 of Fig. 3;
4@ Fig. 'Tis a transverse-vertical sectionalfviewA
on 1ine>1-1 of Fig.¿4;
~
Fig. 8 is a front elevation of the» forward end
of the» breech-bolt removed;
Fig.„9 is a horizontal sectional view on line
45„ 9-9-of«Fig.-8;
g
Y
Fig'.> 10. is a perspective view Vof the bracket
serving' to hold the pivot of the cartridge-ele
vator lever;
pig-11 is a perspective view of the cartridge- ~
50; elevator lever; and
.Flg'.~v12’is a perspective view of the'leaf-spring`
for acting on the- cartridge-,elevator lever.
y
r In'- the description and claims, the various
parts are identifled byA speciñc names for con
‘553 venience, but theyv are> intended to be> as generic
The
in place with the integral,~ bent, positioning-lug 35
dû' thereof located between the oppositeside
members` ilv and ‘42" ofthe' bracket 34.' Pivotèd'
to the bracket at 43y is a cartridge-elevator lever
44 having a projection 45. Integrally for-med with
the bracket 34 is'an- ejector 46 having, an ejector 40
nose 41 vadapted to travel' inthe slot 48l of. the
breech-bolt portion I5. The bracket 34` has
the parts 4I, 42', and 46`a11 'formed as oneintegral
member.
A
'
Y
When the breech-boltis in the closed position
shown in Figi 3, the lower surface’râQ of the for-Y
ward'end of thev breech-'bolt presses the portion
5Il'of the tubular magazine 32to spring the latter
down somewhat; kwhich permits the follower 5I
which is pressed by a spring (not shown) to force
the rim 52 of a cartridgeßâ'past the limit-shoul
der 54", andas the breach-bolt moves rearwardly`
from'its closed position shownin Fig. 3, the car 657
2,105,752
2
tridge 53 is pushed rearwardly by the follower 5I
and rocks around toward horizontal position.
As the surface 139 of the breech-bolt passes
along the sloping surfaces 55 of the flexible tube
32, the latter is permitted to spring upwardly and
force the rim 52 of the cartridge 53 up into the
lower portion of the rim guide-and-retainer chan
nel 24 and also close 01T passage of the next fol
lowing cartridge, so that the latter will be stopped
10 by the limit-shoulder 54. Continued movement of
the breech-bolt to the rear now pulls the rim 52
and the cartridge 53 toward the rear to approxi
mately the position shown in Fig. 4, at the same
time extracting any fired shell by means of the
15 extractor-fingers 2l, 28 and ejecting it by the
ejector-nose 4l, that may have been in the car
tridge-chamber. The cartridge 53 in its rear
ward movement engages the upper end 55 of the
cartridge-elevator lever 44 and swings the latter
20 rearwardly until the projection 45 passes to the
right of the line of thrust of spring 39 through
the pivot 43, whereupon the action of the spring
39 against the projection ¿l5 swings the lever 44
downwardly to almost the position shown in Fig.
25 4.
Further movement of the cartridge 53 rear
ward forces the lever fully to the position shown
30
35
40
45
in Fig. 4 with the spring 39 pressing against the
portion 51 and tending to swing the lever 44
upwardly and forwardly, and holding the same
in engagement with the rim 52 and shell-body
of the cartridge 53.
As the breech-bolt is moved forwardly toward
the closed position, the rim 52 of the cartridge
53 presses against the rear edge of the portion
56 of the cartridge-elevator lever G4, thus com
pelling the lever lié tc swing upwardly and for
wardly about its pivot 53, thus forcing the rim
52 of the cartridge 53 to slide upwardly in the rim
guide-and-retainer channel 24 until the cartridge
is properly positioned, as shown in Fig. 5, for
entry into the cartridge-chamber.
The above-described sequence of operations
takes place repeatedly during the repeated firing
and actuation of the breech-bolt of the firearm.
While the upturn-and-pullback type of repeat
ing ñrearm has been used to illustrate the inven
tion in the drawings, the invention can also be
employed on other types of repeating firearms
employing a breech-bolt, such as pump-action
50 and automatic repeating firearms.
'I'he invention may be carried out in other
specific ways than that herein set forth without
departing from the spirit and essential character
istics of the invention, and the present embodi
55 ment is therefore to be considered in al1 respects
as illustrative and not restrictive, and all changes
coming within the meaning and equivalency range
of the appended claims are intended to be em
braced therein.
I claim:
l. A repeating iirearm including: a receiver;
a barrel at the forward end of said receiver and
having a cartridge-chamber; a breech-bolt hav
ing cartridge-guide-and-retainer means and mov
65 able in the receiver to closed and retracted posi
tions; means for locating a cartridge below the
60
axis of the cartridge-chamber and with its head
adjacent the cartridge-guide-and-retainer means
of said breech-bolt when the breech-bolt is in
70 retracted position; and a cartridge-elevator lever
pivoted below and forward of the head of such a
positioned cartridge when the breech-bolt is in
retracted position, with said lever extending up
ward and rearward from said pivot and in en
75 _ gagement with such a positioned cartridge, said
pivoted lever being so constructed as to be forced
by direct positive engagement of the cartridge
therewith, to swing the lever upward and for
ward and raise the cartridge along said cartridge
guide-and-retainer means into proper position for Ul
insertion in the cartridge-chamber when said
breech-bolt is moved from retracted to closed
position.
2. A repeating firearm including: a receiver;
a barrel at the forward end of said receiver and
having a cartridge-chamber; a breech-bolt hav
ing cartridge-guide-and-retainer means and
movable in the receiver to closed and retracted
positions; means for locating a cartridge below
the axis of the cartridge-chamber and with its
head adjacent the cartridge-guide-and-retainer
means of said breech-bolt when the breech-bolt
is in retracted position; a cartridge-elevator lever
pivoted below and forward of the head of such a
positioned cartridge when the breech-bolt is in 20
retracted position, with said lever extending up
ward and rearward from said pivot and in en
gagement with such a positioned cartridge, said
pivoted lever being so constructed as to be forced
by direct positive engagement of the cartridge 25
therewith, to swing the lever'upward and forward
and raise such a positioned cartridge along said
cartridge-guide-and-retainer means into proper
position for insertion in the cartridge-chamber
when said breech-bolt is moved from retracted to 30
closed position; and a spring to urge said lever
upward and forward to engage such a positioned.
cartridge.
3. A repeating firearm including: a receiver; a
barrel at the forward end of said receiver and 35
having a cartridge-chamber; a breech-bolt hav
ing cartridge-guide-and-retainer means and mov
able in the receiver to closed and retracted posi
tions; means for locating a cartridge below the
axis of the cartridge-chamber and with its head 40
adjacent the cartridge-guide-and-retainer means
of said breech-bolt when the breech-bolt is in re
tracted position; and a cartridge-elevator lever
pivoted below and forward of the head of such
a positioned cartridge when the breech-bolt is in
retracted position, with said lever extending up
ward and rearward from said pivot and in en
gagement with the rim and shell-body of such a
positioned cartridge, said pivoted lever being so
constructed as to be forced by direct positive en
gagement of the cartridge therewith, to swing
the lever upward and forward and raise the car
tridge along said cartridge-guide-and-retainer
means into proper position for insertion in the
cartridge-chamber when said breech-bolt is
moved from retracted to closed position.
4. A repeating firearm including: a receiver;
a barrel at the forward end of said receiver and
having a cartridge-chamber; a breech-bolt hav
ing an upwardly-extending cartridge-guide-and
60
retainer channel and movable inthe receiver to
closed and retracted positions; means for locat
ing a cartridge below the axis of the cartridge
chamber and with its head in the lower portion
of said cartridge-guide-and-retainer channel 65
when the breech-bolt is in retracted position; and
a cartridge-elevator lever pivoted below and for
ward of the head of such a positioned cartridge
when the breech-bolt is in retracted position,
with said lever extending upward and rearward 70
from said pivot and in engagement with such a
positioned cartridge, said pivoted lever being so
constructed as to be forced by direct positive en
gagement of the cartridge therewith, to swing
the lever upward and forward and Araise the car- 75
2,105,752
tridge along said channel into proper position for
insertion in the cartridge-chamber when said
breech-bolt is moved from retracted to closed
position.
5. A repeating firearm including: a receiver; a
barrel at the forward end of said receiver and
having a cartridge-chamber; a breech-bolt hav
ing an upwardly extending cartridge~guíde-andretainer channel and movable in the receiver to
10 closed and retracted positions; means for locat
ing a cartridge below the axis of the cartridge
chamber and with its head in the lower portion
of said cartridge-guide-and-retainer channel
when the breech-bolt is in retracted position; and
Y 3
a cartridge-elevator lever pivoted below and for
ward of the head of such a positioned cartridge
when the breech-bolt is in retracted position, with
said lever extending upward and rearward from
said pivot and in engagement with the rim and 6
shell-body of such a positioned cartridge, the part
of said lever engaging the cartridge being shaped
to be forced by direct engagement of the car
tridge therewith, to swing the lever upward and
forward and raise the cartridge along said chan 10
nel into» proper position for insertion in the car
tridge-chamber when said breech-bolt is moved
from retracted to closed position.
HAROLD F. MOSSBERG.
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