This Is Bound Firmly
Round The Rim Of Each Chamber With Tie-Tie, And The Bag Of It At The
Top Is Gathered Up, And Bound To A Small Piece Of Stick, To Give A
Convenient Hand Hold.
The straight cylinder, terminating in the
nozzle, has two channels burnt in it which communicate with each of
the
Chambers respectively, and half-way up the cylinder, there are
burnt from the outside into the air passages, three series of holes,
one series on the upper surface, and a series at each side. This
ingenious arrangement gives a constant current of air up from the
nozzle when the bellows are worked by a man sitting behind them, and
rapidly and alternately pulling up the skin cover over one chamber,
while depressing the other. In order to make the affair firm it is
lashed to pieces of stick stuck in the ground in a suitable way so
as to keep the bellows at an angle with the nozzle directed towards
the fire. As wooden bellows like this if stuck into the fire would
soon be aflame, the nozzle is put into a cylinder made of clay.
This cylinder is made sufficiently large at the end, into which the
nozzle of the bellows goes, for the air to have full play round the
latter.
The Fan bellows only differ from those of the other iron-working
West Coast tribes in having the channels from the two chambers in
one piece of wood all the way.
Enter page number
PreviousNext
Page 342 of 705
Words from 94845 to 95095
of 194943
