The disclosure relates to a firearm with a hammer mechanism.
This type of firearm is known under the name Sauer 303. It also contains a housing, a barrel fastened to the housing, a bolt assembly for closure of a cartridge chamber provided in the barrel and a hammer mechanism to activate a firing pin arranged in the bolt assembly. The hammer mechanism in this known gas-operated firearm consists of a hammer mounted to rotate on a trigger housing, which acts directly on the firing pin arranged in the bolt assembly.
A firearm of the type just mentioned with an alternative hammer mechanism is disclosed. Expedient modifications and advantageous embodiments are also disclosed.
In an embodiment, the hammer mechanism in the firearm according to the disclosure has a hammer strut arranged between the firing pin and a cocking piece offset parallel to the firing pin. A connection can be made via this hammer strut between the cocking piece arranged in the housing behind a magazine shaft and the firing pin arranged in the bolt assembly.
The hammer strut expediently runs above and along a downwardly open magazine shaft arranged in the housing and in a particularly advantageous embodiment can be guided to move in a longitudinal groove on the inside of a rear part of the barrel parallel to the center line of the barrel.
In a preferred embodiment, the hammer strut has a front crosspiece and a rear crosspiece for connection to the firing pin and the cocking piece. The crosspieces expediently protrude inward for contact with the cocking piece and activation of the offset firing pin.
A cocking element cooperating with the firing pin and operable by the hammer strut can be arranged on the bolt assembly to activate the firing pin in another advantageous embodiment. The cocking element can be designed in the form of a lever and attached with one end to the rear end of the bolt assembly to pivot about a pin offset laterally relative to the longitudinal axis of the bolt assembly and perpendicular to the longitudinal axis. The other end of the lever-like cocking element can be designed as a free end protruding laterally relative to the bolt assembly for contact with the hammer strut.
The cocking element in another advantageous embodiment can be arranged to pivot in a transverse groove on the rear end of the bolt assembly and designed in the form of a wedge with an oblique surface facing the firing pin.
The cocking element can be expediently arranged to rotate on a breech lock mount insertable into the housing around a transverse pin between a rear starting position and a front firing position. The cocking piece is acted upon by a cocking spring, which is stretched between the cocking piece and a cocking lever movable by means of a cocking slide between a rear uncocked position and a front cocked position. The cocking spring is therefore only tensioned when the locking lever is moved into a cocked position via the cocking slide.
Additional details and advantages of the disclosure are apparent from the following description of a preferred embodiment example with reference to the drawing. In the drawing:
A partial longitudinal section of a gas-operated firearm is depicted in
The bolt-operating device 5 has a carrier 10 guided to move on the guide rod 4 and two push rods 11 fastened to carrier 10. Each rear free end of the two push rods 11, viewed in the direction of firing, contains a ramp-like control cam (not shown here), via which the bolt 6, provided with lateral protrusions 12 and depicted in
It follows from
Two radially protruding retaining pins 19 are provided on the rear part 16 of barrel 2 lying on housing 1 for fastening of barrel 2 to housing 1. The retaining pins 19 provided with external threads can be radially inserted into the rear part of barrel 2 or directly molded onto the barrel 2. The retaining pins 19 are designed for engagement in two holes 20 arranged next to each other in a protruding support part 21 of housing 1. The barrel 2 can be fastened to housing 1 via the two retaining pins 20 with the freely protruding front part 17 through two nuts 22 accessible from the bottom of housing 1. The rear end of the front shaft 3 is also fastened to the support part 21 of lock housing 1. A downward protruding gas-discharge block 23 is provided in the middle area of the barrel 2 on front part 17.
As follows from
A chamber 28 provided in barrel 2 is closed off downward by the bolt 6 depicted in cross section in
A firearm lock with a cocking piece 37 movable between a rear initial position and a front triggering position for activation of the firing pin 29 arranged in bolt 6 via a hammer strut 38 and the lever-like cocking element 33 on bolt 6 is shown in
The cocking piece 37 is mounted to rotate on a lock carrier 41 insertable into housing 1 around a cross pin 42. A slide stop 43 is also arranged on the lock carrier 41, via which the cocking element 37 can be held in the rear initial position or released via a trigger not shown here for firing of a shot. A locking lever 44 is also linked on the lock carrier 41 to pivot about another cross pin 45 between a rear uncocked position and a front cocked position. A cocking spring 46 is stretched between the locking lever 44 and the cocking piece 37. Displacement of the locking lever 44 between the rear uncocked position and the front cocked position occurs through a cocking slide 47, which contains a lower part 48 connected to the locking lever 44 and an upper part 49 connected to it. The slide-like upper part 49 operable by the thumb of a shooter is guided according to
It is apparent in
The breech lock is shown in an unlocked position in
Only when the cocking slide 47 is pushed upward into the upper off-safe position depicted in
When a shot is fired, some of the powder gases are guided into gas cylinder 24 through the gas-discharge hole 25 of barrel 2. The pressure piston 26 is forced rearward, viewed in the direction of firing, by the gas pressure taken off in gas cylinder 24. The bolt-operating device 5 with the carrier 10 and the two push rods 11 is then also pushed rearward against the force of recoil spring 7. The bolt 6 can be moved downwards by the backward movement of the two push rods 11, so that the locking block 13 is unlocked on barrel 2 and the bolt 6 can open the chamber rearwards in barrel 2. During backward movement of the bolt 6, the empty cartridge is ejected via the ejection opening 18 and the breech lock is locked. A new cartridge can then be brought to the level of the chamber via the magazine spring of a magazine (not shown here). The bolt 6 is forced forward by the recoil spring 7 via the bolt-operating device 5 with the carrier 10 and the two push rods 11 and the new cartridge forced into the chamber. The bolt 6 goes back to the locked position and the bolt is closed via the control cam on the push rods 12.
1 Housing
2 Barrel
3 Front shaft
4 Guide rod
5 Bolt-operating device
6 Bolt
7 Main spring
8 External threads
9 Threaded sleeve
10 Carrier
11 Push rods
12 Protrusions
13 Locking block
14 Locking groove
15 Bolt handle
16 Rear part of barrel
17 Front part of barrel
18 Ejection opening
19 Retaining pin
20 Holes
21 Support part
22 Nuts
23 Gas-discharge block
24 Gas cylinder
25 Gas-discharge hole
26 Pressure piston
27 Piston rod
28 Chamber
29 Firing pin
30 Firing pin spring
31 Front end of firing pin
32 Rear end of firing pin
33 Transverse groove
34 Cocking element
35 Pin
36 Free end of cocking piece
37 Cocking piece
38 Hammer strut
39 Front crosspiece
40 Rear crosspiece
41 Lock carrier
42 Cross pin
43 Slide stop
44 Locking lever
45 Cross pin
46 Cocking spring
47 Cocking slide
48 Lower part
49 Upper part
50 Recess
51 End part
52 Longitudinal groove
53 Magazine shaft
54 Oblique surface
Number | Date | Country | Kind |
---|---|---|---|
20 2015 106 525.6 | Dec 2015 | DE | national |