초록 ▼

A chain saw feed mechanism includes an arm pivotally mounted to the chain saw and carrying a dog for pivotally engaging the workpiece at the kerf. Thrusting the chain saw along the longitudinal axis of the guide bar moves the guide bar along an arc concentric to the point of workpiece engagement and

A chain saw feed mechanism includes an arm pivotally mounted to the chain saw and carrying a dog for pivotally engaging the workpiece at the kerf. Thrusting the chain saw along the longitudinal axis of the guide bar moves the guide bar along an arc concentric to the point of workpiece engagement and thereby cuts laterally through the workpiece. Longitudinal thrusting force applied by the operator transfers via the lever arm into lateral feed force needed for cutting the workpiece. The feed mechanism is particularly useful in aggregate cutting applications, where the chain saw is heavy and large cutting forces are needed to pass the saw through the aggregate.

대표청구항 ▼

A device for cutting a workpiece, the device comprising: cutting means defining a line of cut whereby said cutting means cuts the workpiece in a direction along said line of cut in response to a feed force parallel to said line of cut; a body carrying said cutting means; feed means coupling said wor

A device for cutting a workpiece, the device comprising: cutting means defining a line of cut whereby said cutting means cuts the workpiece in a direction along said line of cut in response to a feed force parallel to said line of cut; a body carrying said cutting means; feed means coupling said workpiece and said body and adapted for response to an applied force transverse to said line of cut and toward said workpiece to produce said feed force and urge said cutting means into movement in said direction along said line of cut; and said feed means including a lever arm pivotally coupled to said body at one end and including a workpiece engaging portion at an opposite end, said workpiece engaging portion engaging said workpiece on a side of said body opposite the cutting direction and angularly projected from said coupling toward said workpiece whereby a force applied to the body toward the workpiece and transverse to the line of cut is translated into a pivotal action induced by the lever arm including a force vector to feed the cutting means in the cutting direction.