The thread pitches on the screw rod (2) are equal.

The first output ramp (18) has a first screw pitch and the second output ramp (19) has a second screw pitch short of the first screw pitch.

A feed screw mechanism in which the thread pitch (B2) of a feed nut (55, 65) is set such that it is slightly larger than the thread pitch (A2) of a feed screw shaft (53, 63) at normal temperatures.

Consequently, at such low temperature, the thread pitch (B1) of the feed nut (55, 65) is generally equal to the thread pitch (Al) of the feed screw shaft (53, 63).

The feedstock transport mechanism may be an auger with a variable flighting pitch along its shaft.

A cap containing internal screw threads attaches to the external screw threads of the open bottom end, sealing the interior of the bottle.

The cutting head includes a screw thread (154).

These means consist of a screw thread (30) present on the cap (3) and engaging with the screw thread (51) on the neck (50).