Nut-cracking machine

TL;DR: In this paper, a cracking machine with first and second opposed cracking plates with pivot means for suspending one of the plates from a pivot axis substantially parallel to and spaced from the pivot axis of the other suspended plate, the suspended plates being interconnected at the bottom of each plate by a link mechanism having a release.

TL;DR: In this paper, a means (16) having projections (18) pushes unhulled nuts between the surface of the means having projections and a surface of a means having channels (28), the channels being wider than the pistachio nuts to be hulled.

TL;DR: In this article, the authors proposed a hinge for hinged securing a first end of an arm adjacent to the base of the base, whereby the arm is pivotally movable on the hinge relative to the hinge between a closed position in which the convex surface is received and nested in the radius of a concave surface recess and the concave and convex surfaces are substantially parallel along their respective arcs.