Year: 1886

page_text: I LUDWIG STACKFLETH of Berlin in the Kingdom of Prussia and German
Empire, Gentleman 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:-
This Invention relates to improvements in breech loading fire arms and obviates
the necessity for turning the chamber which exists in the numerous systems or
forms of breech loaders heretofore proposed or brought into use. The Invention
also provides a closing device acting on two sides and the general construction of
the arm is simplified by means of various improvements in different parts of the
mechanism as hereinafter explained.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several figures on the annexed sheet of drawings the same letters of reference
indicating corresponding parts in all the figures.
Figure 1 of the accompanying drawings represents a longitudinal section of the
mechanism of a breech loading rifle constructed according to this Invention and
figures 2 and 3 are respectively a side elevation and a plan of the same.
Figure 4 represents a transverse section taken along the line A-B figure 1 and
figure 5 a similar section along the line C-D figure 2.
Figures 6 and 7 represent respectively sections taken along the lines E. F
and G H figure 1.
Figure 8 is a detail showing in plan a safety device hereinafter described and
figures 9 and 10 show in longitudinal section and end elevation respectively a boss
or sleeve e which is placed on the chamber and provided with a cam surface or
inclined notch y acting on a projection k on a needle bolt has hereinafter
explained.
To the barrel 1 of the arm is screwed a case a which at its rear end forms a
collar 6 figures 1, 2, 3 and 6 for retaining and guiding a cylindrical chamber c and
acting as a stop to limit the backward motion of the breech block or obturator f
The front extremity of the chamber c which is of smaller diameter than the other
part is passed through a boss or sleeve e hereinbefore referred to provided with
13.

page_text: a handled and retained in position upon the chamber c by the breech block f
screwed upon the end of the said chamber A cartridge extractor g is provided on
the left hand side of the breech block.
The chamber c is provided with a slot o extending from its hinder end to the
back of the boss e in which slot travel two dents or projections i and k on the
needle bolth The projection i extends through the slot o into a corresponding
groove p formed in the case a.
The needle bolt h enclosed in the chamber c is provided with a prolongation or
stem surrounded by a helical spring which can be removed together with the
striker by unscrewing a screwed plug or stopper m in the end of the chamber-In
order to show when the lock is cooked the plug m is perforated with an orifice n
through which the aforesaid stem or prolongation on the needle bolt protrudes
when cocked as indicated in figure 3 The dent or projection on the bolt h is
capable of engaging with a catch s on a trigger bolt q The dent or projection k
is inclined or sloped away to the left on its front side (figure 9) and when the
breech is closed and the firing pin forward engages with a correspondingly inclined
recess or notch y in the boss or sleeve e
(
This sleeve also presents on the left hand side a tooth or projection 2
figures 10 and 5 which together with the extractor g travels in a longitudinal
groovej (figure 4) formed in the case a-The groovej communicates with a recess 3
figure 2 in the left hand side of the case a into which recess the projection 2 enters
when the breech is closed a corresponding recess being provided on the opposite or
right hand side of the case a for the reception of a shoulder 4 on the sleeve e
For throwing out the cartridge case a spring x underneath the case a (figure 1) is
employed having a claw or device which ejects the empty case-The chamber c
is prevented from becoming accidentally unscrewed from the breech block f by
means of the dent i which engages in the slot p and prevents the chamber from
turning.
:
The catch s on the trigger bolt q projects for a very short distance into the
groove p in the box a
The object of this arrangement is to prevent the excessive
resistance to the retraction of the chamber which would be caused if the catch
projected for a considerable distance-The trigger action consists of the bolt q
provided with a flanger and the catch s which projects into the groove p as
herein before described and which a helical spring in a cylinder z tends to press
upwards Within the trigger guard is placed a trigger levert pivoted on the bolt q
and provided with a safety catch w which is secured in two positions by means of
a spring vengaging with notches in a disc u figure 8.
Figures 1, and 4 show the parts in the positions which they occupy when the
breech is closed and the needle bolt disengaged from the catch.
The breech block f is jammed against the breech by depressing the handle d
whereby the projection 2 is caused to rise and engage with the recess 3 on one
side of the case a whilst the shoulder 4 engages with the recess 5 on the opposite
side of the said case pressure is thus applied on both the right and left hand side
of the breech block-By raising the handle d or turning the sleeve c to the left
the projection 2 is caused to quit the recess 3 and is brought opposite the groove j
whilst at the same time the shoulder 4 is freed from the recess 5 so that the
chamber c together with the breech block and sleeve e can be drawn back until
the latter comes in contact with the collar b Figure 2.
By means of the incline or cam y which acts upon the inclined or bevelled side
of the dent k the needle bolt is at the same time pushed back until its point h
is entirely within the front surface of the breech block-In case the breech is not
properly closed the cam surface or notch y also serves to prevent the advance of
the needle and premature explosion of the cartridge-This notch also prevents the
accidental displacement of the obturator or breech block on firing-When the
chamber is drawn back the two dents or projections on the needle bolt slide along
the alot over the catch 8,

page_text: The cartridge can then be introduced
When the chamber is subsequently pushed
forwards the dent i engages with the catchs which consequently holds back the
striker or needle bolt and compresses the spring l
The trigger is locked by turning the arm w of the safety device so as to cause
the said arm to pass under the trigger t and prevent the catch from moving The
trigger is released by turning the arm w about 90 degrees to the left and can then
be used for operating the bolt q.
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
First. In a brcech loader the box or case a provided with a collar b at its rear
end acting as a guide for the chamber c in combination with the grooves j and p
formed in the said case and with the right and left hand recesses 3 and 5 substan-
tially as herein before described and illustrated in the accompanying drawings.
Second. In a breech loader the chamber o guided in the case a in combination
with the slot o and the screwed plug m substantially as herein before described and
illustrated in the accompanying drawings.
Third. In a breech loader the needle bolt h guided in the chamber c and provided
with a dent or projection (i) sliding in the groove p in the case a as well as in the
slot o in the chamber c and with another dent or projection (k) engaging with the
inclined notch or cam surface y in the sleeve or boss e substantially as hereinbefore
described and illustrated in the accompanying drawings.
Fourth. In a breech loader the sleeve or boss e capable of turning upon the
chamber c and provided with a tooth or projection 2 working in the groove; the
said boss or sleeve being supported on both sides by engaging with the two notches
or recesses 3 and 5 in combination or not with the incline or cam y which pushes
back the needle bolt when the boss or sleeve is turned to open the breech
substantially as herein before described and illustrated in the accompanying
drawings.
Fifth. In a breech loader the breech block or obturator f screwed to the cham-
ber c substantially as hereinbefore described and illustrated in the accompanying
drawings.
Sixth. In a breech loader the screwed plug or stopper m for enabling the needle
bolt h and spring 1 to be readily and quickly taken out in combination with the
Lole n through which the stem of the needle bolt protrudes when the gun is
cocked substantially as hereinbefore described and illustrated in the accompanying
drawings.
Seventh. In a breech loader the trigger arrangement consisting of the bolt q
provided with the flanger and catch s and pressed upwards by a helical spring in
combination with the trigger lever substantially as herein before described and
illustrated in the accompanying drawings.
Eighth. In a breech loader or safety device consisting of a pivoted arm w which
engages with the underside of the trigger lever t in combination with the locking
disc and the locking spring engaging with the said disc substantially as herein-
before described and illustrated in the accompanying drawings.
Dated this 26th day of Tonu 100R