Abstract: A spool includes a plurality of plates having a body and a pair of legs defining a winding area for receiving rope, wire or similar material. Each plate further includes a slot in the body and a tab extending from the body. The tab of one plate is inserted through the slot of another plate to join the various plates. The plates can pivot about their tab and slot joints such that the spool may be collapsed by disengaging one of the tab and slot joints and pivoting the plates to a generally flat position. The tabs may be provided with features such as ears or tongues to prevent undesired separation of the plates.

Abstract: A spool for winding wire, rope or other materials includes a hub having a flange disposed on each end thereof. The flanges are deflected outwardly from the hub. Each flange contains a plurality of ribs that project from the interior surface of the flange so as to provide a constant width for winding the material on the hub.

Abstract: A tiller head for a soil tilling device including a shaft which carries a number of blades which rotate with the shaft, and a drive for causing rotation of the shaft. A housing surrounds the drive. At least one of the blades is mounted for oscillatory movement where its ends shift laterally relative to the shaft. A camming device is carried by the housing and protrudes into the plane of rotation of the blade. The blade contacts the cam upon rotation of the shaft to urge the ends of the blade sequentially under the housing, thus tilling the soil under the housing.