Juice extractor with automatic pulp discharge

Claim 2

Juice extractor with automatic pulp discharge, comprising a housing, a cover for said housing, a motor driven screen basket rotatable about a vertical axis in said housing, a grating disc fixedly attached to the inner face of the bottom of said screen basket, means for introducing the material to be extracted into a filler pipe extending through said cover of said housing and downwardly into said screen basket, a plug extending through said filler pipe for urging the material to be extracted toward said grating disc, said material being grated and thrown against the inner surface of said screen basket, whereby the juice passes through the wall of said screen basket and the pulp is being moved against said inner surface of the screen basket to be dicharged at the upper edge of said screen basket and into pulp discharge means provided at the upper end of said housing, and pulp stripping means provided with stripper segments offset vertically with respect to each other and adapted to be brought selectively into and out of engagement with the inner surface of said screen basket for conveying the pulp thereon upwardly from one stripper segment to the next higher one.

Claim 3

Juice extractor according to claim 1, in which said pulp stripping means comprises two groups of stripper segments, and means for alternately moving said groups in and out of engagement with said inner surface of said screen basket.

Claim 4

Juice extractor according to claim 1, including means forming a vertical hinge axis arranged eccentrically in said screen basket and extending parallel to said filler pipe, means for attaching said pulp stripping means to said vertical hinge axis means, said stripping means comprising two angularly displaced groups of stripper segments, means on said plug adapted to engage said pulp stripping means for alternately adjusting said pulp stripping means to two different positions, in each one of which a different group of stripper segments is in engagement with said inner surface of said screen basket.

Claim 5

Juice extractor according to claim 1, including means forming a vertical hinge axis arranged eccentrically in said screen basket and extending parallel to said filler pipe, means for attaching said pulp stripping means to said vertical hinge axis means, said stripping means comprising two angularly displaced groups of stripper segments, means on said plug adapted to engage said pulp stripping means for alternately adjusting said pulp stripping means to two different positions, in each one of which a different group of stripper segments is in engagement with said inner surface of said screen basket, said means for alternately adjusting said pulp stripping means comprising a pin (30) on said stripping means extending into a longitudinal groove (17) of said plug, a swivel member (18) pivotally supported between its ends and angularly disposed in said groove, a spring (33) for urging said swivel member to an inclined position in which its ends engage opposite side walls of said groove, said pin, upon insertion of said plug, being engaged by one edge of said swivel member, adjusting the latter against the action of said spring so that said pin moves above the upper end of the swivel member and onto the other side thereof, and upon withdrawal of the plug moves plumoves along the swivel member and adjusts the same into the opposite direction, so as to cause the pin to adjust said pulp stripping means.

Claim 6

Juice extractor according to claim 1, in which said screen basket is provided with a cylindrical screen portion (24) whose lower edge merges into a conical screen portion (26) which latter changes into a horizontal non-perforated bottom wall (5), the inclination ( Alpha ) of said conical screen portion with reference to the plane of said bottom wall being so selected that the material thrown by the grating disc is deposited in the form of a ring on the lower portion of the cylindrical screen portion and from there is moved upwardly by the lowest stripper segments of said pulp stripping means.