A - Human Necessities – 01 – C
Patent
A - Human Necessities
01
C
111/34, 64/21.1
A01C 7/20 (2006.01) A01C 7/12 (2006.01) B65G 65/48 (2006.01) F16D 1/06 (2006.01) F16H 55/12 (2006.01)
Patent
CA 1149235
ABSTRACT The invention relates to seed metering and particle dispensing wheels and to mechanism for mounting such wheels or other rotative elements to a shaft. The wheel has a C-shaped major part with a central opening for receiving the shaft, the free edges of the major part defining a slot ex- tending from the opening to the wheel periphery. A minor part is receivable in the slot to complete the wheel. The minor part at its inner end. and the shaft, are provided with cooperating surfaces which, when engaged, provide a drive connection between the shaft and the wheel. To remove a wheel from the shaft the minor part is withdrawn from the slot and the major part moved transversely of the shaft so that the shaft passes through the empty slot. Replacement or additional wheels can be assembled to the shaft using the reverse procedure. The major and minor parts can have cooperating detents thereon to lock them together, the locking force of which can be overcome if the wheel binds while the shaft tries to rotate, so that the driving engagement between the shaft and wheel is disrupted and little or no damage to the wheel results.
395203
Macrae & Co.
Morris Rod-Weeder Co. Ltd.
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