Improvements in Cartridge-expellers for Breech-loading Fire-arms.
Year: 1888

page_text: COMPLETE SPECIFICATION.
Improvements in Cartridge-expellers for Breech-loading Fire-arms.
1, PAUL MAUSER of Oberndorf, on the Neckar, in the Kingdom of Württemberg
and Empire of Germany, 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 :-
The object of the invention is a peculiarly constructed cartridge expeller or ejector
for breech-loading fire-arms of that class known as bolt guns; these guns may be
single loaders, guns with temporary magazine, or guns with permanent magazine,
commonly called, repeaters. In the drawing accompanying this specification, the
latter is represented as applied to a single loading "Mauser" gun, as an example,
but it is also applicable to "Mauser" guns with temporary magazines and to repeaters,
and to bolt guns of other systems. The modifications necessary in these different
cases require no inventive power but can be made by any gun smith using only
professional skill.
In the accompanying drawing:
:-
Figure 1 represents partly a horizontal longitudinal section and partly a plan view
of the breech case, belt and expeller or ejector.
.. Figures 2 and 3 are cross sections on the lines v. w. and x. y. respectively.
Figures 4 and 5 show variations of the construction of the stop.
case c.
The expeller or ejector consists of a bar a having on its front end a projection e
The bar a
into which is screwed the ejector pin d provided with a coiled spring s.
extends from the bolt head along the bolt nearly back to the end of the breech
The projection e on the inside of the bar a is partly bored out from the front
to receive the coiled springs and the ejector pin d, which latter is screwed into the
material of the projection e at the bottom or end of the bore. The projection e is
placed in a groove milled into the bolt head in such way that it can move forward
about to an inch. Through ibe material of the head f left standing in front

page_text: and rear of the said groove, small holes are drilled, which receive the ends of the
ejector pin d, the front end of which, the spring s pressing back the projection e,
is flush with the bottom of the recess, in the face of the bolt head f, receiving the
bottom of the cartridge shell, as these conditions of parts are represented in Figure 1.
The great advantages of this construction of the projection e are, that the spring s
cannot set by being pressed together too much, the front end of the wall of the bore
abutting against the material of the bolt head in front of its groove and preventing
a further compression of the spring s. The latter is guided very well and centrally
by the bore of the projection e whereby it works even and uniform.
After the gun is fired and when the breech is opened, the claw g of the extractor pulls
the empty cartridge shell out of the barrel and drags it back as the bolt k is drawn
back, until the ejector pin d is stopped short a little distance before the end of the
stroke of the bolt A.. As the bolt, in the next moment, finishes its stroke, the bolt
head f slides back along the arrested ejector pin d, compressing the springs, and
the claw g pulls the cartridge shell further back, the bottom of which abuts against the
now protruding ejector pin d, whereby the said shell is thrown round the claw 9 and
ejected or expelled effectually.
The stopping or arresting of the ejector pin d is produced in the following way.
The bar a is provided upon its side face with a groove a', which is limited at the front
end of the bar a by the shoulder a³, and at the back end by a similar shoulder. Into
this groove a protrudes, through the wall of the case c, a stop b, the peculiar con-
struction of which may be modified. The bar a slides for the greater part of the
stroke of the bolt k along this stop b, but at the proper moment, the shoulder a² abuts
against the stop band is stopped or arrested, whereby the ejector pin d also is
stopped, while the bolt & goes back a little further, finishing its stroke. The length
of the groove a¹ therefore, must be slightly less than the length of the stroke of the
bolt plus (+), the extent of the stop b.
As mentioned above, the peculiar construction of the stop b may be modified. In
Figure 1 the stop 6 is part of one arm 61 of a lever mounted on a pin 63, the
other arm of which lever is cup shaped and actuated by a coiled spring placed
below the same: The lever is placed in a suitable recess in the outside of the breech
case and the stop works through a slot provided in the case. This construction has
also the advantage that the bolt k can be removed entirely out of the breech' case.
For this purpose the lever end 63 is pressed down by a finger, which causes the
stop to be drawn back far enough to allow the shoulder a² to pass the stop b.
In re-inserting the bolt the latter forces back the stop b, the back corner of which
is rounded, until the shoulder a has passed it, when the stop 6 snaps automatically
into its normal position in the groove a¹.
b
b
By dispensing with this last mentioned advantage, simpler constructions. of the
stop may be made use of. In figure 4 the end 6 of a screw screwed through the
wall of the breech 'casé c, so that the head 61 rests upon its outside, protrudes into
the groove a¹ and serves the same purpose as the stop in Figure 1.
In figure 5 is represented another modification. A flat piece furnished with a
stud or projection 6, protruding through a hole in the wall of the. breech case c, into
the
groove a¹ is screwed to the outside of the breech case 'c by a headed screw. g.
The screw hole of the piece b' is oblong, as well as that of the case c, through which
the stop b passes, for the purpose to adjust the proper position of the stop b.
It must be remarked here that in regard to the front portion of the bar à a simpli-
fication can be effected by leaving out the bore of the projection e and using only the
solid bottom of it, so that the spring s is guided only by the pin d. But this con-
struction cannot be recommended as it allows the springs to be injured accidentally
by compressing it too much during the insertion of the expeller or ejector. into the
groove of the bolt head f.
The expeller or ejector described in the foregoing specification does not abut hard
against the stop b, but soft, which increases the duration of all parts. It can be used
in single-loaders as well as in repeaters and in guns with detachable magazines, the
ejector pin d enduring a long stroke, so that the empty shell is ejected prior to a new

page_text: cartridge falling down out of the detachable magazine or rising up from a detachable,
or stationary magazine.
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 :-
In breech-loading fire-arms, a cartridge shell expeller or ejector consisting of a
grooved bar a with a shoulder a' and a projection e (bored out partially or solid) into
which is screwed the ejector pin d, and a spring s, in combination with the bolt k,
bolt head and a stop constructed, according to Figure 1, as part of a spring
lever 1, 62, 63, or, according to Figure 4, as a stationary screw b, b¹, or, according to
Figure 5, as a stud b of the adjustable plate 61 substantially as shown and described
and for the purposes set forth.
PAUL MAUSER..
By Harris & Mills,
23, Southampton Buildings,
Agents.