Abstract: A portable separable grass and bush cutter including a multisection elongated main pipe, a power source provided at one end of the main pipe, a cutting means provided on the other end of the main pipe, a multisection main shaft housed within the main pipe for transmitting power from the power source to the cutting means and a means for coupling together the section of the multisection main pipe and for coupling together the sections of the multisection main shaft.

Abstract: A brake device for use in a portable bush cutter having a construction in which the driving force of the engine is transmitted through a centrifugal clutch assembly to the drive shaft sheathed in the elongated main pipe, then changed in direction by a bevel gear means and further transmitted to the rotary blade. Said brake device is installed at a location between either the drive shaft or the rotary blade shaft and the centrifugal clutch assembly. This brake device comprises a brake drum and a brake shoe or brake band and is operated simultaneously with the engine throttle valve by a lever secured to the handle grip, so as to apply the brakes to the rotary blade without stopping the engine.