| 摘要 |
The invention relates to a heavy, mounted harrow having a hand operated jacking arrangement that can be used to move the harrow in a simple manner from an inoperative position to a range of operative positions. The harrow includes a frame having a plurality of ro ws of tines mounted thereon and depending therefrom; a support beam mounted above the frame and anchored thereto; a pair of drag arms secured distally to the support beam and which support the frame in its operative and inoperative positions; a connecting clamp which secures th e drag arms to a vehicle; and a jacking arrangement extending between one of the drag arms an d the connecting clamp to facilitate raising and lowering of the tines into an inoperative or a range of operative positions. Quick adjusting pins, secured through placement holes in the fram e, may also be provided to increase or decrease the angle of the tines when in use.
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