APPARATUS FOR CAUSING OSCILLATING MOTION OF A SAW BLADE， A SAW BLADE， AND A METHOD OF ATTACHING A SAW BLADE

Apparatus comprising: a rotatable drive shaft (12); one or more members (16a-d) mounted for oscillatory， pivoting motion; motion conversion means (17， 28a-d， 16a-d) for converting rotational motion of the drive shaft to the oscillatory， pivoting motion of the one or more members; means coupling the or each member and one or more saw blades (14a-f) so that the oscillatory motion of the one or more member causes oscillatory cutting action of the or each blade. There is also provided a saw blade， and a method of attaching a saw blade. Apparatus comprising: a rotatable drive shaft (12); one or more members (16a-d) mounted for oscillatory， pivoting motion; motion conversion means (17， 28a-d， 16a-d) for converting rotational motion of the drive shaft to the oscillatory， pivoting motion of the one or more members; means coupling the or each member and one or more saw blades (14a-f) so that the oscillatory motion of the one or more member causes oscillatory cutting action of the or each blade. There is also provided a saw blade， and a method of attaching a saw blade.