A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
97/84
A01B 3/00 (2006.01) A01B 23/02 (2006.01)
Patent
CA 1179542
ABSTRACT Arrangement in harrows comprising a generally ho- rizontal framework (2) adapted to be propelled on a prefe- rably variable level above ground. The framework includes parallel frame rods (3) of polygonal cross-section and carries substantially resilient tines (4) which are adapted in a per se known manner to engage the soil by breaking or digging, the tines (4) are disengagebly attachable to the polygonal frame rods (3) of the framework in arbitrary positions along said rods by a tightenable fastening means provided with a clamping bow (5). The fastening means (5) is so designed that in tightened position it can take at least two different, fixable angular positions (6, 7, 8) about the axis of the polygonal frame rod (3) because the fastening means (5) in each angular position (6, 7; 8) has at least two guide portions (6'-6'', 7'-7'', 8'-8''), which coact with two of the corners (3', 3'') of the polygonal frame rod (3). The insertion portion (9) of the tine is complementarily adapted to the fastening means (5) and by being clamped by means of a clamping bow (20) embracing the frame rod (3) it is pressed in the direction of the frame rod (3) so that the tine (4) cannot turn about the axis of the frame rod.
395277
Stark Karl G.c.
Bereskin & Parr
Stark Karl G.c.
LandOfFree
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