US PATENT SUBCLASS 89 / 130
.~.~ By regulating time of return of breech block

Current as of: June, 1999
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89 /   HD   ORDNANCE

125  DF  AUTOMATIC {14}
129.01  DF  .~ Regulation of speed or rate of automatic fire {3}
130.~.~ By regulating time of return of breech block

DEFINITION

Classification: 89/130

Guns under subclasses 129.01+ wherein the return of the breech block is delayed for a predetermined time, (e.g., by a breech block sear controlled by a clock escapement or fluid check).

SEE OR SEARCH THIS CLASS, SUBCLASS:

143, for trigger control of breech mechanism in semi-automatic fire.