Abstract: A lawn debris collection box is mounted, by a slide member, for movement along upwardly and rearwardly inclined guide rods. The box is also mounted so as to pivot upwardly and rearwardly about a connection with the slide member. Also mounted to the slide member for upward and rearward pivotal motion is a pair of drive arms which each have a lost motion connection with the box. A latch arm operative for releasably retaining a hinged lid of the box in a closed position is pivotally connected to the drive arms along with a pair of lift actuators which drive and latch arms to first release the lid, to raise the box until the slide members engage stops at the upper ends of the guide rods and to thus pivot the box to a dump position.

Abstract: In a V-belt drive having a rotating pulley and an annular flange formed about the pulley axis and extending axially from a side of the pulley; a plurality of vanes extending from the radial outer surface of the flange; a plurality of air passages extending through the flange with each passage having an axis directed radially outwardly and toward the plane of said pulley, said passages being close to but in trailing relation to a vane.

Abstract: A centrifugal clutch includes a drive shaft to which a first sheave half is fixed and on which a second sheave half is axially shiftably mounted. The second sheave half forms part of a housing including a cover which is secured to an annular rim of the second sheave half by fasteners which also serve to serve to hold a plurality of equiangularly spaced ramp or cam elements against respective seats provided on support ribs forming an integral part of the second sheave half.

Abstract: A variable speed drive clutch of the type including a drive shaft, a driven or output shaft, a drive sheave on the drive shaft, a driven sheave on the driven shaft, and a drive belt for drivably interconnecting the drive sheave to the driven sheave. The drive sheave includes a fixed half and an axially slideable half. The slideable half defines a housing in which a support or spider for supporting flyweights is mounted. The flyweights move radially outward and inwardly, from a given radius at any given instant, in response to increasing and decreasing rotating speeds, respectively, of the drive shaft. Cam rollers associated with the flyweights ride on cam surfaces on the slideable sheave half and cause the slideable sheave half to move axially away from the fixed sheave half, when the flyweights move radially inwardly, and towards the fixed sheave half when the flyweights move radially outwardly.