Year: 1890

page_text: Date of Application, 10th Mar., 1890
Complete Specification Left, 10th Dec., 1890-Accepted, 7th Mar., 1891

page_text: is provided at its rear side with a stop or cam, , which pushes (when the case i
is inserted into the magazine casing e) from above towards the tappet or cam k
(Fig. 9), and presses the cartridge magazine holder inwards.
When the cam of the cartridge magazine has passed the key-shaped cam k of
the bolt, the latter moves outwards, owing to the action of the spiral-spring ;
and the under-side k of the cam 2 prevents the cam of the cartridge magazine
from being lifted. (See Fig. 1.)
V. THE SAFETY-STOP.
The objects of this part of the mechanism are as follows:-
1. To stop the cylinder lock when opened.
2. To stop the trigger a when the locking cylinder is closed.
3. To stop the firing pin.
The stop mechanism consists of the following parts. A plate (being eccentrically
slotted) is turned by means of a thumb piece about the bolt l', (Fig. 3), on the rear
part of the casing. This plate has on its circumference three notches, into which
a spring engages in order to stop the plate in any desired position. In order
to lock the trigger a, into the eccentric slot of the plate slides a stop pin 1
(fixed by means of shoulder and nut ) which pin passes also through a suitable
opening of the casing.
28
When the plate 2 is turned as indicated in Figs.
and 3, the stop pin is
pushed forward (owing to the eccentric slot ) till its fore end bears against the
recess a (Fig. 1) of the trigger, so that the latter is stopped.
In the reversed position, the stem passes the thin edge of the trigger.
The whole space in which are situated. the locking device and the trigger may
be covered by a suitable plate.
The plate has on its upper end a tooth--which either engages in a recess b
(Figs. 2 and 4), of the locking-cylinder, or into a recess in the firing pin in order
to stop the same.
Dated this 10th day of March 1890.
PHILLIPS & LEIGH,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Repeating Small Arms.
I, JOSEF LAUMANN, of Vienna, No. VII, Kaiserstrasse, No. 80, in the Empire
of Austria, Gunmaker, 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 :-
My invention relates to improvements in repeating small arms, and its special
object is to increase the number of shots which can be fired per minute.
In order that the invention, and the means by which it is to be carried into
practical effect, may be thoroughly understood, I will now describe them in detail,
referring in so doing to the accompanying drawing which is to be taken as part of
this Specification and read therewith."
Fig. 1 is a sectional longitudinal elevation of a pistol constructed according to
my invention. It is taken on the line A-B of Fig. 2, and illustrates the firing
position.
Fig. 2 is a rear end elevation of Fig. 1.
Fig. 3 is a sectional longitudinal elevation. It illustrates the position of the
mechanism immediately after the breech bolt (called a cylinder in the Provisional
Specification) has been drawn back, and the case of the cartridge, shewn in Fig. 1
in the barrel, extracted and ejected.
Fig. 4 is a rear elevation of the trigger.
Fi in transvores coation talon on the tion C D9

page_text: Fig. 8 is a rear elevation of a cartridge magazine.
Fig. 9 is a plan of Fig. 8.
I. THE CARTRIDGE MAGAZINE.
further
G is the improved magazine. 9, 9 are two slots formed in each side of the
magazine, and h, h are corrugations in those portions of both sides of the magazine
which lie between the slots. These corrugations are, respectively, opposite to each
other, so that each pair provides a seat for one cartridge i; and each seat
endowed with the necessary resilience by the presence of the said slots in their
defined position. The figures shew a magazine as made to hold five cartridges.
(Fig. 5) is a stud adapted, by engaging the side of the magazine, to guide it into
the magazine chamber described in the next paragraph.
II. THE FEEDING MECHANISM.
I is the magazine chamber. It is open at the top, as shewn in Fig. 3, so
that the magazine can be pushed downwards into it, and also at the bottom,
at, to allow of the emptied magazine dropping out. K is the feeding or
lifting lever. It is pivotted at k. is its automatically actuating spring. The
latter is shewn as an ordinary spiral one within an extension of the magazine
chamber. The nose of the feeding lever is always tending to force the
cartridges upwards out of their respective seats. is a subsidiary lever pivotted
to the nose; and, a spring provided for the purpose of automatically
keeping the nose of the said subsidiary lever always pressing against the
underside of the bullet of the bottom cartridge, so that all the cartridges, and
especially the top one may be returned into an inclined, as distinguished from a
horizontal, position, after the breech bolt has passed forwards over the magazine,
The object of keeping them in the inclined position is to facilitate their entry into
the barrel.
III. THE MAGAZINE DETAINING MECHANISM.
Inasmuch as the cartridges have a hold upon their magazine through their
seats, and are themselves constantly under the lifting influence of the feeding
levers K and ³, a special detaining mechanism is provided for the
purpose of
preventing the magazine from being lifted, and for holding it down in its place
in the chamber. L is a stop upon the back of the magazine. As the latter is
pushed into the chamber 1, the stop slides down a groove l, and, being tapered,
pushes past an automatic detent which forthwith engages the said stop by
returning above it. The detent is formed upon a bolt 12. This latter is
under the control of a spring 13; and is, besides, continued outwards through
the side of the chamber, terminating there in a stud or push, so that pressure
upon the latter will free the charged magazine if ever it be required to take
it out of the chamber, i.e., in other words, if it be desired to unload the
weapon.
IV. THE TRIGGER AND BREECH BOLT MECHANISM.
M is the trigger. m is its pivot; and m², its spring. A suitable shoulder m²
is provided to enable the spring to hold the trigger in either of its extreme
positions. N is the breech bolt. Its function is to push the cartridges, one by
one, into the barrel. n is a locking bar pivotted at n' to the side of the
breech bolt, and is adapted to be engaged by the trigger, by a stud n² which
enters a slot n in the top of the former. n' is a notch in the under side of
the standing breech into which the nose of the bar n is pulled by the trigger.
When the trigger is pulled, the breech bolt is moved forward, and engaging
behind the top of the rim, pushes the top cartridge forward into the barrel.

page_text: .
V. THE FIRING MECHANISM.
This is illustrated in detail in Fig. 6. O is the firing pin, and 0, its
actuating spring. When the breech bolt is pulled forward, the projection o¹ is
engaged by the automatic detent o connected to the firing lever o, so that the
spring will be compressed. There is a projection on the front of the
firing lever, and a corresponding slot p in the trigger-eye, so that when the latter
is pulled over, the finger contacts with the firing lever and causes it to dis-
engage the detent of from the projection o¹. p is the returning spring of the
firing lever. 2 is a groove in the side of the breech bolt to clear the stud h..
p is the extractor. It is a spring bar on the side of the breech bolt, and its
nose engages behind the rim ou the back of the cartridge. The breech bolt is
retracted by a forward push against the trigger-eye, and the empty cartridge
case extracted simultaneously from the barrel; and ejected sidewise at the
opening in the top of the magazine chamber.
(a). To lock the breech bolt back, i.e.—when it is in the position illustrated in
Fig. 3.
(b). To lock the trigger when the breech bolt has been pushed forward, i.e. :-
when it is in-the-position illustrated in Fig. 1.
(c). To lock the firing pin.
It should be noted that the safety mechanism is shewn as disengaged from trigger,
-breech-bolt and firing pin-in-Figs. 1; 2-and-3:
notch
Qis a bolt, and its operative end adapted to engage in either the front
or the back notch of the trigger, according to the position of the
latter for the purpose of safely locking it in either of its terminal positions.
The bolt projects through a slot q' in the back of the pistol, and enters a slot q'
in the plate S which has its axis on the pin s. The plate S is turned by a
thumb bit s'. The axis of the bolt Q is therefore that of the plate S, so that
when the latter is turned from the position illustrated (say) in Fig. 2, the end
will be turned up before or behind the trigger, according to the then position
of the latter. It is to be noted that the slot is concentric, and the slot q³
eccentric, with respect to the axis s. is a tooth which, when the plate S is
turned, passes through the slot in the breech bolt into a second slot s' in the
firing pin, or into the latter only, behind the breech bolt, according to which
position it is desired to lock the firing mechanism in.
t, t' are notches in the periphery of the plate S, into which a detaining spring u
engages to prevent, it being accidentally moved out of either of its operative
positions.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I déclare that what I
claim is
1. A cartridge magazine having slotted sides and cartridge seats, as set forth.
2. The combination with the cartridge magazine of a stop upon the external
surface thereof, and an automatic detent adapted to engage with the said stop and to
detain the magazine in the chamber against the action of the feeding lever, as set
forth.
3. The combination with a cartridge feeding mechanism as hereinbefore described
and claimed, of a stop on the magazine, and an automatic detent adapted to engage
therewith and also to be disengaged therefrom by pressure upon an external con-
tinuation of said detent, as set forth.
4. The combination of trigger, locking bar pivotted upon the breech bolt and

page_text: connected with the trigger by a slot and stud device, and notch in the standing breech
in which notch the said locking bar is engaged by the trigger when the latter is
pulled, and from which it is disengaged when the trigger is pushed.
5. The combination of the firing mechanism as the same is herein before described
with the trigger and breech bolt mechanism, as set forth.
6. The combination of the safety mechanism for locking the trigger and firing pin
in either of their extreme positions as hereinbefore described and illustrated.
Dated this 10th day of December 1890.
PHILLIPS & LEIGH,
22, Southampton Buildings, Chancery Lane, W.C., Agents for the Applicant.