Firearms – With adjustable head space – By reaming
Patent
1983-02-07
1985-05-07
Jordan, Charles T.
Firearms
With adjustable head space
By reaming
F41C 2700, F41C 2118
Patent
active
045149216
ABSTRACT:
A firearm, such as a pump action shotgun, includes a barrel connected by a magazine cap to a receiver. A fore end assembly is connected to the receiver and includes a magazine tube positioned below the barrel. A tubular recoil buffer surrounds the magazine tube, and a slide bar arrangement extending from the recoil buffer connects the recoil buffer to the receiver. A cup-shaped fore end is adapted to receive the recoil buffer and is preferably fabricated of a light weight material, such as aluminum or plastic. The fore end has an internal shoulder, and a compression spring is positioned in the fore end in surrounding relation with the recoil buffer. The coil spring has opposite end portions and one end portion abuts the fore end shoulder and the opposite end abuts a spanner nut. The spanner nut is threadedly connected to the end of the recoil buffer. The spanner nut is advanced to a predetermined position on the recoil buffer to apply a preselected degree of compression to the coil spring where the coil spring is compressed between the fore end and the spanner nut. With this arrangement, the fore end receives a biasing force from the coil spring. The shooter's hand supports the fore end to thereby exert an inertia force on the fore end maintaining the fore end normally stationary. When the firearm is discharged, the rearward or recoil force generated by the firearm is transmitted to the shooter's hand and is dampened by the inertia force of the fore end which moves forwardly to compress the coil spring and thereby absorb the recoil shock to the extent that the impact transmitted to the shooter's shoulder is negligible.
REFERENCES:
patent: 2679192 (1954-05-01), Seeley et al.
patent: 3115063 (1963-12-01), Browning
patent: 3580132 (1971-05-01), Vartanian
patent: 3650060 (1972-03-01), Schubert
patent: 3683534 (1972-08-01), Davis
patent: 4088057 (1978-05-01), Nasypany
patent: 4156979 (1979-06-01), Katsenes
patent: 4164825 (1979-08-01), Hutchison
Adams John M.
Jordan Charles T.
Price, Jr,. Stanley J.
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