Importance

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Abstract

A screw feeder is provided having a lower screw shaft and an upper drive shaft which are detachably connected to each other. The drive shaft includes an outer tubular member, with an inner, generally solid, connecting member positioned within the drive shaft. The lower end of the tubular member of the drive shaft includes a generally tapered recess which is adapted to mate with a lower end of the connecting rod positioned therein. The lower end of the connecting rod has a plurality of generally axially arranged slits which make the lower rod end flexible, with the lower end having a generally frustoconical outer surface. The upper end of the screw shaft is adapted to be attached to the lower end of the drive shaft by at least one annular member which engages one of the shafts. The annular member has two inwardly protruding pins, with the lower end of the drive shaft having a portion with two generally L-shaped opposed recesses which are adapted to engage the pins. An upper end of the screw shaft has a throughbore which is adapted to be aligned with two opposed holes in the annular member, in order to attach the annular member to the top of the screw shaft by inserting a truncated frustoconical pin therein.

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First Claim