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    • 41. 发明授权
    • Grass trimmer
    • 草修剪器
    • US4077190A
    • 1978-03-07
    • US679884
    • 1976-04-26
    • Edmond W. Crites
    • Edmond W. Crites
    • A01D34/416A01D34/52A01D34/535A01D35/24
    • A01D34/4166A01D34/52A01D34/535
    • There is disclosed a memorial marker trimmer including a horizontal rotary drum mounted from a supporting vehicle and rotated about a horizontal axis. Mounted at equidistance about the periphery of the drum are four axially extending rows of leather thongs forming whips about eleven inches long and a quarter-inch square in cross section. Consequently, when the rotor is driven at high r.p.m.'s, the thongs will whip radially outwardly in vertical planes with the free extremities thereof engaging the grass to be trimmed during their downward sweep and breaking the top portions of the individual grass blades from the stalks thereof, as well as mulching the cuttings and sweeping clean obstacles over which the drum is passed.
    • 公开了一种纪念标记修剪器,其包括从支撑车辆安装并围绕水平轴线旋转的水平旋转鼓。 围绕滚筒的周边等距安装的是四条轴向延伸的皮革皮条,形成大约十一英寸长的四分之一英寸的横截面。 因此,当转子以高转速驱动时,该皮带将在垂直平面中径向向外旋转,其自由端在其向下扫掠期间接合草被修剪,并将单个草叶的顶部部分与茎部分断开 以及覆盖切割物和扫过滚筒通过的清洁障碍物。
    • 43. 发明授权
    • Balanced cutting assembly for a mower
    • 平衡切割机组
    • US3606748A
    • 1971-09-21
    • US3606748D
    • 1969-09-08
    • MOTT CORP
    • MIDDLESWORTH TOMMY A
    • A01D34/535A01D55/22
    • A01D34/535
    • THIS CLOSURE DEALS WITH A STATICALLY AND DYNAMICALLY BALANCED CUTTING ASSEMBLY FOR USE IN A MOVER. THE ASSEMBLY INCLUDES A ROTATABLE SHAFT, A PLURALITY OF RADIALLY EXTENDING CUTTING BLADE SUPPORTS SECURED TO SAID SHAFT, AND ONE OR MORE CUTTING BLADES ATTACHED TO EACH OF SAID SUPPORTS. THE SUPPORTS ARE ANGULARLY AND CIRCUMFERENTIALLY SPACED IN A PREDTERMINED PATTERN ALONG A CENTRAL SECTION OF THE SHAFT SO THAT UPON ROTATION OF THE SHAFT, THE BLADES CUT A SWATH WHICH IS SUBSTANTIALLY CONTINOUS OVER THE LENGTH OF THE CENTRAL SECTION. TO BALANCE THE ASSEMBLY, THERE IS SECURED TO EACH END SECTION OF THE SHAFT AT LEAST ONE BALANCE BLADE SUPPORT, AND ONE OR MORE BALANCE BLADES ARE FASTENED TO EACH BALANCE BLADE SUPPORT. THE BALANCE BLADES AND SUPPORTS THEREFOR ARE SUBSTANTIALLY IDENTICAL WITH THE FIRST MENTIONED SUPPORTS AND BLADES, AND THEY ARE AXIALLY AND ANGULARLY LOCATED RELATIVE TO THE PATTERN SUCH THAT THEY STATICALLY AND DYNAMICALLY BALANCE THE ASSEMBLY.