| 摘要 |
<p>A chain saw feed mechanism (22) includes an arm pivotally mounted to the chain saw (20) and carrying a dog (80) for pivotally engaging the workpiece at the kerf. Thrusting the chain saw (20) along the longitudinal axis of the guide bar (28) 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 (54) into lateral feed force needed for cutting the workpiece. The feed mechanism (22) is particularly useful in aggregate cutting applications, where the chain saw (20) is heavy and large cutting forces are needed to pass the saw through the aggregate. <IMAGE></p> |
