Fire arm mechanism for a multi-barrel weapon with barrel selecto

Details Fire arm mechanism for a multi-barrel weapon with barrel selecto Fire arm mechanism for a multi-barrel weapon with barrel selecto

1982-06-30

1984-09-25

Jordan, Charles T.

Firearms

Breech loading

Upward-tilting breech

F41C 1900

Patent

active

044728999

DESCRIPTION:

BRIEF SUMMARY
In multi-barrel weapons, it is desirable that the shooter should be able to select the firing sequence for the different barrels. In hunting rifles, therefore, each barrel usually has a separate trigger. On the other hand, use has also been made of devices in which the trigger is common to all the barrels and shifting of the firing sequence is carried out by means of a barrel selector included in the mechanism. Thus, U.S. Pat. No. 3,537,203 discloses a fire arm with internal hammers for a respective firing pin, the shifting of the firing sequence being produced by lateral pivotment of an inner catch which locks one hammer while the other is fired. Similar mechanisms are shown in U.S. Pat. Nos. 3,444,640, 3,421,243, and 3,757,446. U.S. Pat. No. 3,786,588 discloses a barrel selector in which a barrel selector arm is displaceable parallel to its pivot axis, to be set in either of two positions depending on which barrel should be fired first. In U.S. Pat. No. 3,283,436 it has also been suggested that barrel selection should be effected by pivoting a link between the trigger and a push rod to each release catch. U.S. Pat. No. 1,131,499 discloses another method in which a special firing pin catch is used to arrest one firing pin while the other is fired when the trigger is pulled. A similar line of thought is described in DE-OS No. 2,311,402 in which a safety catch can be set in three positions in order that a connecting lug on it should either escape a pivot arm connected to the trigger or engage the release catch of either of the barrels. In U.S. Pat. No. 3,808,274, it has further been suggested to pivot the link of the trigger such that it is caused to act on either of two hammer release means. Finally, it has been suggested in U.S. Pat. No. 4,091,556 to utilize a stepped trigger linkage which is laterally shiftable and the steps of which determine the firing sequence, and which is used for transmitting the movement of the trigger to the respective release catch.
The fire arm mechanisms described above have in common the disadvantage of being of a complicated design and difficult to adjust.
The present invention sets out from a mechanism of a slightly different type, viz. a mechanism in which the firing means of the barrels can be arrested in the cocked state by means of associated pivotally mounted release catches each having an engagement surface for engaging a corresponding pressure surface on a firing push link which is pivotal about a pivot axis and thereby pivotally connected to the pivotally mounted trigger of the mechanism and which is common to the different firing means and yieldingly biase for pivoting in a direction for engaging the different release catches for successively releasing their associated firing means upon consecutive pulls of the trigger. A fire arm mechanism of this type is disclosed in Swedish patent application No. 7908132-9, but the mechanism described therein is not adjustable and so the firing sequence always takes place first in the lower barrel and then in the upper barrel.
The object of the present invention is to overcome the drawbacks inherent in the above-indicated adjustable mechanisms and to make the last-mentioned prior-art fire arm mechanism adjustable.
Thus, the invention provides a fire arm mechanism for a multi-barrel weapon with a barrel selector for selecting the firing sequence of the barrels on successive pulls of a trigger common to the barrels. The firing movement of the trigger is transmitted to the different release catches of the barrels by means of a firing push link pivotally mounted on the trigger and spring-loaded in a direction towards the release catches. In order to shift the firing sequence, the pivot axis of the firing push link is displaced transversely of its longitudinal axis with respect to the release catches, such that the firing push link, depending on its angular position, will either first engage the distal release catch with respect to the pivot axis or first engage the proximal release catch with respect to the pivot axis.
Thus, the inv

REFERENCES:
patent: 3131499 (1964-05-01), Arsenault
patent: 3283436 (1966-11-01), Bills
patent: 3421243 (1969-01-01), Browning
patent: 3444640 (1969-05-01), Simmons
patent: 3537203 (1970-11-01), Weatherby et al.
patent: 3757446 (1973-09-01), Vesamaa
patent: 3786588 (1974-01-01), Soana
patent: 3808724 (1974-05-01), Linde
patent: 4091556 (1978-05-01), Katsenes

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