Improvements in Extractors and Ejectors for Fire-arms.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in Extractors and Ejectors for Fire-arms.
I, KAREL KRNKA, of Vinohrady, Prague, Bohemia, in the Empire of Austria,
do hereby declare the nature of my said 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 my invention is to manufacture improved appliances for extracting
and ejecting the fired cartridge cases from breech-loading fire-arms.
And in order that my said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings, in which similar
letters and figures of reference indicate corresponding parts.
Fig. 1 is an end view of the improved head fitted to the breech-bolt a.
Fig. 2 is an elevation, showing the left hand side of Fig. 1.
Fig. 3 is an elevation of the right hand side of Fig. 1.
Fig. 4 is a horizontal section showing the lower half of the appliance at the
moment of firing.
Fig. 5 is a horizontal section, showing the firing bolt c drawn back, and the
cartridge d being ejected.
Fig. 6 shows a modification of the extractor-ejector, slightly differing from that
shown in Figs. 4 and 5.
Fig. 7 is a section of a portion of the breech chamber, showing the horizontal
guide slots.
Fig. 8 shows the underside of the upper half of the head.
Fig. 9 illustrates the extractor-ejector shown in Fig. 6 in detail.
a is a portion of the breech-bolt. bare the studs upon the same. The extractor-
ejector is fitted between the two parts of the head of the locking bolt. The head
of the locking bolt is capable of being partially rotated upon its axis, the head
being held in the breech bolt by means of studs e e, working in an annular groove
in the breech-bolt a. The head is formed in two parts, being the upper half
the lower half. Between these two parts the extractor-ejector is held.
and
One form of construction of the extractor-ejector is shown in Figs. 4 and 5,
made in two parts, and in Figs. 6 and 9 another form is shown, made in one piece.
Referring to Figs. 6 and 9, 1 is the sliding barrel. 2 is a hole bored through the
barrel, transversely, to receive the end of the firing bolt c. 3 is a square stud,
attached to the extractor arm 5, the stud 3 being held between the flanges f¹ and gl
(Figs. 1, 2 and 3) of the head. The end 4 of the extractor-ejector is held between
the flanges and 2 (Figs. 1, 2 and 3) of the head. 6 is the ejector arm.
Referring to Figs. 4 and 5, the extractor arm 5 is formed in one with the
cylinder 8, and the ejector arm 6 is attached to a cylinder 9, loosely fitted upon 8.
Referring to Figs. 4, 5, 6, 8, and 9: 7 is a spiral spring fitted in the bore
of the barrel. This spring presses against the side ƒ³ (Fig. 8) of the flanges f'
and g¹.
The hole 2 is of sufficient size to admit the part marked c¹ of the firing bolt c, as
shown in Figs. 4 and 6.
2
Referring to Fig. 7, ww are the guides for the flanges f¹ ƒ' g¹ g², extending the
whole length of the breech chamber, and xa are similar guides for the studs b b of
the breech bolt a. is a shorter slot for receiving the end 4 of the ejector. This
slot terminates at u (Fig. 5).
The operation is as follows:-
On firing the arm, the reduced portion c¹ of the bolt c, enters the hole 2 in the
extractor cylinder, as shown in Figs. 4 and 6. On the withdrawal of the bolt c to

page_text: the position shown in Fig. 5, the extractor arm 5 carries the cartridge d backwards,
until the cylinder reaches the incline at the end of the slot c. The pin c, being
of smaller diameter than c¹, allows the extractor-cylinder to be pressed towards the
left by the incline u. The ejector arm 6 then presses the cartridge outwards, as
shown in Fig. 5, whereby the cartridge is ejected.
It is important that the extractor arm 5 should retain its grip of the cartridge
after firing; this is effected by the position of the bolt end in the hole 2. On
further withdrawal of the bolt, in the usual manner, the cartridge is freed, as above
described.
On reloading the spring 7 returns the extractor-ejector to its normal position, as
shown in Figs. 4 and 6.
The construction of the extractor-ejector, as shown in Figs. 6 and 9, is suitable
for repeating rifles, in which single cartridges are not introduced by hand.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is :-
1. The combination with breech-bolts of breech-loading fire-arms, of an improved
head, formed in two parts, and attached to the breech-bolt by studs e, travelling in
an annular groove formed in the bore of the breech-bolt a, substantially as herein
before described & illustrated by the drawings.
2. Tlic combination with breech-bolts as aforesaid, of an improved head formed
in two parts, attached to the breech-bolt by studs travelling in an annular groove
as aforesaid; such improved head being constructed to receive an extractor-ejector
consisting of a sliding-bolt formed in two parts, fitted with a spring 7, a guide stud 3,
an extractor-arm 5, an ejector-arm 6 attached to a cylinder 9, severally operating
substantially as herein before described and illustrated by the drawings.
3. The modified form of the extractor-ejector, substantially as herein before
described and illustrated by Figs. 6 and 9 of the drawings.
4. The improvements in extractors and ejectors for fire-arins substantially as
herein before described and illustrated by the drawings.
Dated 28th November 1891.
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent for Applicant.