US PATENT SUBCLASS 89 / 125
AUTOMATIC

Current as of: June, 1999
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89 /   HD   ORDNANCE

125AUTOMATIC {14}
126  DF  .~> Plural gun, barrel or bore {1}
128  DF  .~> Convertible gun operation (e.g., to nonautomatic)
129.01  DF  .~> Regulation of speed or rate of automatic fire {3}
132  DF  .~> Firing device operation or control (e.g., full automatic) {12}
155  DF  .~> Movable chamber type (e.g., revolver) {2}
158  DF  .~> Movable butt piece
159  DF  .~> Combined movable barrel and gas operated
160  DF  .~> Movable barrel (e.g., rotary) {4}
179  DF  .~> Gas piston-type lock actuator carried by breech block (e.g., firing pin)
180  DF  .~> Breech block lock (positive or impositive) {8}
191.01  DF  .~> Gas piston type {3}
194  DF  .~> Blow back breech block {2}
198  DF  .~> Buffers and brakes
199  DF  .~> Receiver closures and/or breech block return means

DEFINITION

Classification: 89/125

(under the class definition) Guns in which the forces developed by the explosion cause operation of the breechblock, firing mechanism and self-loading mechanism.

(1) Note. In order to cause classification in this or the indented subclasses, the firearm must be of the self-loading explosion-operated type, and all devices of this type and subcombinations thereof are placed in these subclasses with the exceptions noted in the notes of this subclass.

(2) Note. Explosion-operated means are the gas piston, barrels which move due to the explosion and operate the gun mechanism, breechblocks having features for blow-back, means operated by motion of the projectile, and breechblocks having springs or other means which will cause the breechblock to return to closed position.

(3) Note. This and the indented subclasses have both hand and shoulder firearms and the heavier firearms and mounted ordnance.

(4) Note. Appended to this subclass and to the indented subclasses are notes setting forth related subject matter classified in other classes and in other subclasses of this class with a more specific statement of the particular lines followed.

(5) Note. The term "automatic" as normally used in the patents of this art has two distinct meanings: (a) To indicate automatic gun operation, where the gun is entirely self-loading; and (b) to indicate automatic firing control, where the automatic gun is constructed to fire continuously while the trigger is held retracted, as long as the ammunition supply will permit.

SEE OR SEARCH THIS CLASS, SUBCLASS: 1.1, for conventional automatic ordnance combined with auxiliary means for placing the gun in condition to begin automatic fire (e.g., breechblock retracting means).

4.05+, for explosion-opened breech guns, i.e., guns having explosion-operated features as defined in (2) Note but of the

nonself-loading type. The line is disclosure. In all cases where the disclosure is not clear that the gun is of the nonself-loading type, classification is in subclasses 125+.

9+, for nonautomatic rapid-fire guns in which external mechanical means are employed to load, fire and reload the gun.

27.11+, for firing devices for nonautomatic ordnance.

33.01+, for conventional automatic ordnance claimed in combination with cartridge feeding devices.

37.01+, +, for conventional automatic guns claimed in combination with mount structures.

41.01+, for guns having explosion-operated means for changing the angle of fire (in any direction) and including for example explosion-operated traversing and plural barrels with explosion-operated means to cause the angles between the barrels to change.

45+, for loading apparatus for nonautomatic ordnance.

SEE OR SEARCH CLASS

42, Firearms,

16, for conventional automatic firearms of the rearward sliding-breechblock type combined with auxiliary devices for manually retracting the breechblock; subclasses 59+, for nonautomatic firearm revolvers; all "magazine" subclasses, for cartridge holders for or combined with conventional automatic firearms; subclasses 69.01+, for miscellaneous firing mechanisms for nonautomatic firearms. 60, Power Plants,

632+, for one shot explosion-actuated expansible chamber-type motors.