| 摘要 |
<p>A sawing device mainly comprising a housing (1) with handles (2, 3), a motor arranged in said housing (1) and driving through a transmission with a starting clutch a sprocket for a saw chain (5) passed around a guide and a mechanism for putting said drive out of operation as quickly as possible in order to prevent injury of the user, wherein said mechanism comprises a plate member (13), pivotable about the axis (14) and provided with a relief rim (16) controlling a second clutch arranged between the sprocket and the starting clutch in the transmission, said plate member being retained against a bias force (19) by means of a safety pawl (27) actuable by a lever (25) in a position in which the clutch is in mesh.</p> |
