Abstract: In contrast to the conventional air brush, an air brush in the invention has a function in which even a beginner can easily perform an operation for pulling an operating rod little by little while the operating rod is slightly pushed and pulled at an initial stage of the drawing of a line requiring a technique and an experience. The operating rod arranged in an air brush main body forms a slanting face therein projected on the front face of this operating rod while the slanting face is inclined from below to above, and this slanting face abuts on the front side edge of a notch port of the air brush main body. An air valve is opened every small amount and a needle is simultaneously retreated every small amount in a range in which the slanting face of the operating rod and the front side edge of the notch port come in contact with each other and are slid at the initial stage of an operation for pushing and moving the operating rod.

Abstract: A control mechanism is provided for use in a gas-operated spraying apparatus such as an airbrush having a needle located axially of a nozzle, the needle being retractable in the nozzle to dispense a medium, for example, paint to be sprayed. The control mechanism includes a manually actuated operating member supported by a pivotal linkage and movable in a first manner to retract the needle, the pivotal linkage causing the needle to be retracted initially at a reduced rate.