U.S. patent number 3,757,446 [Application Number 05/124,248] was granted by the patent office on 1973-09-11 for firing mechanism for hunting fire arm with two barrels.
This patent grant is currently assigned to Valment Oy. Invention is credited to Erkki Vesamaa.
United States Patent |
3,757,446 |
Vesamaa |
September 11, 1973 |
**Please see images for:
( Certificate of Correction ) ** |
FIRING MECHANISM FOR HUNTING FIRE ARM WITH TWO BARRELS
Abstract
A firing mechanism for a hunting gun having two barrels includes
a change-over device connected with the trigger, so that the user
can select which of the two barrels shall be fired first. A
laterally movable pendulum prevents double firing. It is connected
with a change-over stud which can move it laterally and which is
located inside the trigger. A change-over lever is carried by the
same shaft as the trigger. A single spring presses the catch of the
pendulum and the catch of the change-over lever against each other
to return the trigger into its starting position and move the
pendulum for release of the other sear.
Inventors: |
Vesamaa; Erkki (Jyvaskyla,
SF) |
Assignee: |
Valment Oy (Helsinki,
SF)
|
Family
ID: |
22413705 |
Appl.
No.: |
05/124,248 |
Filed: |
March 15, 1971 |
Current U.S.
Class: |
42/42.01 |
Current CPC
Class: |
F41A
19/21 (20130101) |
Current International
Class: |
F41A
19/21 (20060101); F41A 19/00 (20060101); F41c
019/00 () |
Field of
Search: |
;42/42R |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Borchelt; Benjamin A.
Assistant Examiner: Jordan; C. T.
Claims
I claim:
1. In a firing mechanism for a hunting arm having two barrels, a
sear and a trigger, a change-over device for selecting which barrel
shall be fired first, comprising a pendulum having a catch, a
change-over stud carrying said pendulum, said change-over stud
being located inside the trigger and displacing said pendulum
laterally, a change-over lever having a catch, said lever being
located inside the trigger, a single shaft carrying the trigger and
said change-over lever, and a single spring urging the catch of the
pendulum and the catch of said change-over lever against each
other, whereby said spring ensures the lateral position of the
pendulum, returns the trigger from the firing position into the
starting position and moves the pendulum after its firing motion
into an anterior position for release of a sear.
Description
The present invention concerns a firing mechanism for a hunting
fire arm with two barrels. The mechanism comprises a trigger, into
which a change-over device has been fitted by means of which the
barrel of the two-barreled fire arm can be selected which shall be
fired first. The change-over device is composed of a pendulum,
preventing double firing, which is laterally displaceable by the
aid of a change-over stud fitted in connection with the trigger.
The pendulum has been journalled on the change-over stud and it has
furthermore a catch, which in association with a catch of the
change-over lever determines the lateral position of the pendulum.
The change-over lever and trigger have been journalled on a common
shaft, in connection with which a spring common to the trigger and
to the change-over mechanism has been arranged.
In equivalent firing mechanisms belonging to prior art the trigger
and change-over lever have been journalled on a separate shaft
outside the trigger. Thereby separate springs have been required
both for returning the trigger from the firing position to the
starting position and for the pendulum and change-over lever.
The aim of the invention is to combine the trigger and the
change-over device with its pendulum so that in the entire
mechanism ony one spring is needed, in order to achieve a firing
mechanism which is simple, reliable in operation and requires
little space.
The invention is mainly characterized in that the pendulum
preventing double firing and releasing the firing sear has been
carried on the change-over stud, placed in the trigger, which
displaces it laterally and by means of which that barrel is
selected which shall be fired first. Furthermore, the invention is
characterized in that the trigger and the change-over lever placed
inside the same are carried on the same shaft, so that one and the
same spring by pressing the catch of the pendulum and the catch of
the change-over lever against each other ensures the lateral
position of the pendulum and returns the trigger from the firing
position to the starting position, and returns the pendulum after
the firing motion into its anterior position for release of the
other sear.
The invention is described in greater detail in the following with
reference to the embodiment example presented in the attached
drawing, however, without any prejudice as regards the scope of the
invention.
FIG. 1 shows the firing mechanism in cocked position and ready for
firing so that the change-over stud has been pushed to the right as
seen from behind the fire arm and whereby thus the hammer on the
right side may be first released.
FIG. 2 shows the situation of FIG. 1, immediately after firing.
FIG. 3 shows the situation of the preceding figures, a short moment
after firing, when the trigger has been allowed to return to its
starting position and the pendulum has swung into its rear
position, thereby preventing double firing.
FIG. 4 shows the section along line IV -- IV in FIG. 3.
FIG. 5 shows the same section as FIG. 4, with the change-over
device in the opposite position.
When the firing mechanism is in the action position of FIG. 1, the
spring 3 urges the catch 2 of the change-over lever 1 against the
catch 5 of the pendulum 4 journalled in a groove provided in the
change-over stud 6. Therefore the spring 3 also urges the trigger 9
into its starting position by the action of the change-over lever 1
and the catches 2 and 5 and the change-over stud 6. In the same
situation the spring 3 also urges the pendulum 4 into its anterior
position, whereby the triggering step 10 rests against the end of
the sear 8 and the mechanism is primed for firing.
As can be seen from the foregoing, the spring 3 takes care of three
different tasks, which previously have been managed by means of
separate springs. This has been achieved by carrying the
change-over lever and trigger on the same shaft and by placing the
change-over device with its spring inside the flange.
When the trigger 9 is pulled backwardly, the triggering step 10
raises the end of the sear 8, and the respective hammer is
released. In FIG. 2 this situation has been shown, in which the
spring 3 has been compressed, urging the trigger towards its
starting position. In FIG. 3 the pendulum 4 is in its rear
position, owing to recoil and releasing of the trigger 9. The
pendulum 4 is returned to its anterior position also by the spring
3, by the use of the catch 2 of change-over lever 1 and the catch 5
of the pendulum, whereby the other sear can now be released by
action of another step beside the triggering step 10.
The operation of the change-over device is apparent in greater
detail from FIGS. 4 and 5. As has been said, the pendulum 4 is
carried in a groove made in the change-over stud, which has been
placed inside the trigger. The catch 2 of the change-over lever
inside the trigger cannot move laterally, whereas the pendulum and
its integral catch 5 can be displaced sidewise by pressing the
change-over stud 6. When the change-over stud 6 is pushed from the
position of FIG. 4 to the left into that of FIG. 5, the change-over
catch 2 yields elastically upward against the force of the spring 3
and the catch of the pendulum can move over to the other side of
the change-over catch 2; this stable position is maintained by the
spring 3. The pendulum 4, which is laterally bound to the
change-over stud, has then moved under the left sear, as viewed
from behind, and it is now possible to release first the left and
only then the right sear.
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