| 摘要 |
<p>Title: "A STONE PICKER" A stone picker has a wheel-mounted tractordrawn frame 10 with a digging assembly of tines 33 for excavating stones as the machine advances, a rotary feeder assembly of flails 25 being driven to impel the stones onto an elevator 36 which discharges them into a bin 22 on the frame, the elevator 36 including a series of spaced parallel shaker bars 42 overlying transverse cleats 39 carried by driven endless chains 38 and with fingers 40 extending up between the shaker bars 42 to move the stones along the shaker bars 42 which are vibrated by the elevator cleats 39 on which they rest to dislodge from the stones adherent soil and small stone particles which fall to earth between the shaker bars 42.</p> |
