1868 The complete Practical Distiller

39

CONTINUOUS DISTILLATION.

would be stopped in the ball r, and through

denser, for it

the tube s run out by t, while the vapours should take their direction to the condenser. I is a mechanism formed by a banded axis and two wheels with teeth ; it is moved by one man, who causes the pump k to play, and turns the shaft u Uy to the bottom of which two wings are fixed, for the purpose of continually agitating and preventing the matter from settling at the bottom of the condenser. K is a pump, which brings the matter from the jack back into the funnel hh oi the condenser. The still A is filled with water, (the first time the co- lumn and condenser are filled also with water;) the water in the still is brought to ebullition ; the steam passes through aa a into the inferior part of the column, ascends from case to case, passes through the rectifier into the condenser, where it abandons its caloric in favour of the water contained in the latter. When this condensed water arrives at the probe F, the pump k works without interruption. The matter proceeding out of the pump having sent the water out with which the condenser has been filled, ar- rives in the column through p p, where it is met by the steam, which causes it to boil ; it descends from case to case in a constant state of ebullition, and, arrived into the last case, it runs into G, and leaves through m. 'By open- ing cocks 7 and 8 of the condenser, the lowest products of distillation are sent back into the rectifier; there they are dephlegmcd, and return at a very high strength, which does not vary during the whole time of distillation. As MODE OF WORKING THIS APPARATUS.