=998. Kneading mill,= with spiral vanes.
=999. Pug mill,= with radial spiral paddles revolving inside a conical
case.
=1000. Pug mill,= with spiral paddles.
=1001. Pan mixer.= A cylindrical case or pan with a set of arms
revolving with the central shaft.
=1002. Egg beater or mixing machine.= Two sets of open radial frames
revolve in opposite directions, the frames being shaped to pass through
each other, and are driven by mitre gear driving a shaft and sleeve.
=1003. Diagonal mixing barrel,= with revolving and fixed vanes.
=1004. Conical mixing barrel= of similar construction.
=1005. Diagonal mixing pan,= used for confectionery, &c.
[Illustration: 986.-1005.]
=1006. Mixer,= with two pairs of arms running in opposite directions.
See Cross section.
=1007. A modification of the last;= the centres of the arms being above
one another so that the arms pass each other in revolving.
=1008. Horizontal table mixing machine.= The stuff works its way from
the centre to the edge of the table by centrifugal force.
See also No. 60. Anderson’s patent employs this plan to continuously
distribute purifying material through water with which the revolving
drum is charged.
See Section 13. Crushing, grinding, &c.