| 摘要 |
A blade drive clutch and brake for a lawn mower including an engine having a drive shaft extending downwardly therefrom and which has a drive sheave thereon. A clutch arm is movably mounted below and rearwardly of the engine drive shaft sheave and supports a vertically disposed, rotatable jackshaft thereon. An upper sheave is mounted on the upper end of the jackshaft and is connected to the engine drive shaft sheave by an upper belt. A lower sheave is mounted on the lower end of the jackshaft and has a drive belt extending therearound which is connected to the sheaves on the cutting blades located in the mower deck. A lever is connected to the clutch arm for moving the clutch arm between engaged and disengaged positions. When the clutch arm is in its disengaged position, the blade drive belt pulls the clutch arm and jackshaft forwardly so that the upper belt is in a non-driving position. When the clutch arm is moved to its engaged position, the upper belt is placed in a driving condition so that the cutting blades will be rotated. A brake drum is mounted on the lower end of the jackshaft and is moved into frictional engagement with a stationary brake band when the clutch arm is moved to its disengaged position so that the rotation of the cutting blades will be slowed.
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