COPYRIGHT

THIS 62 PAGE BOOKLET CONTAINES OVER 100 PHOTOS AND INCLUDES SEVERAL PAGES OF PATENTS / APPLICATIONS. ALL INCLUSIVE IS A HISTORY, CLASSIFICATION OF VARIOUS PATTERNS AND GENERAL SPECIFICATIONS.

THE AUTHOR

KIJIRO NAMBU

NAMBU MACHINE PISTOLS

THE AUTHOR

KIJIRO NAMBU

NAMBU MACHINE PISTOLS

ARTICLES

AIR CRAFT WEAPONS

From some 230 BIBLIOGRAPHICAL REFERENCES,

this literary work is composed of

542 PAGES with

686 ILLUSTRATIONS, including patent drawings and descriptions.

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THIS 62 PAGE BOOKLET CONTAINES OVER 100 PHOTOS AND INCLUDES SEVERAL PAGES OF PATENTS / APPLICATIONS. ALL INCLUSIVE IS A HISTORY, CLASSIFICATION OF VARIOUS PATTERNS AND GENERAL SPECIFICATIONS.

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--- DEFINITIONS ---
BIPOD - BREECHBLOCK

BIPOD
A two legged support of usual attachment to gun barrel and used as an accuracy tool for long range targets and/or steadiness in sustained firing.

BLOWBACK ACTION
An automatic weapon which functions through the reloading cycle from use of discharge gas pressures acting directly on the fired cartridge and against the bolt retracting assembly for movement.

BLOW FORWARD ACTION
With the bolt in stationary position, the barrel moves forward from expanding gases to open the action and eject the expended cartridge case. As the barrel returns to battery, a live cartridge is loaded into the breech and ready for discharge.

BOLT [BREECH]
This term refers to the part in most automatic weapons which supports the cartridge case for injection, discharge and extraction from the barrel chamber. Containing the firing pin it moves horizontally to assist other moves in the functioning cycle. Sometimes referred to as a breech bolt it may be confused with the description of the term Breech Block.

BOLT LOCK [VERTICLE]
Also see ROTARY BOLT LOCKING.

The part of the firing mechanism located in the receiver, which holds the bolt in place and prevents movement during the moment of cartridge ignition. The lock positioned in slots in the receiver travels vertically and is controlled by motion of the gas actuator assembly. It is a feature of the Japanese Type 96 and Type 99 series of automatic weapons. Its end function is similar in results to the rotating type of locking system as found in the Lewis Machine Guns design.

BOLT LOCKING LUG[S]
Projections on the front or rear of bolt that cam into corresponding grooves in the barrel extension or frame to lock the bolt in battery position ready for cartridge discharge. The purpose is to hold the bolt in a steadfast and locked position during high gas pressures from cartridge discharge.

BREECH
The rear end of the barrel chamber where cartridge is inserted.

BREECHBLOCK
Similar to a bolt in function it supports the cartridge case in movement and may travel in any direction by pivoting or sliding perpendicular to the barrel bore axis. The most commonly known weapon utilizing the breech block system is the Vickers/Maxim family of automatic weapons.