| 摘要 |
Herein disclosed is a manual floor sweeper including a casing, a pair of front and a pair of rear wheels and a pair of roll brush brooms juxtaposed longitudinally in parallel with each other in a manner to rotate inwardly in response to the rotation of the wheels so as to sweep up the dust on the floor into the hollow space of the casing. Two substantially enclosed housings are juxtaposed to each other at the both sides of the casing. Each of two gear trains is accommodated in each of the housings and includes a pair of drive gears, a pair of brush actuating gears, and a pair of coactive gears. A selective means is interposed between the drive gears and the brush actuating gears for selectively effecting power transmission between them, so that, in accordance with the forward and backward movements of the floor sweeper, the drive power from the drive gears, which are located at a front position with respect to the direction of advance of the floor sweeper, may be transmitted to the adjacent brush actuating gears by way of the selective means and further to the brush actuating gears of the far side by way of the coactive gears, thus allowing the drive gears in the rear position to rotate idly.
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