The rollers (6), fitted on the generator,
support a ring (7) carrying radial pins (8) projecting outwards, one pin
for each bucket. The ring can travel round on the rollers. Superposed on
the ring is a tray (9) closed at the bottom except for an aperture
beneath the throat (11), on which is mounted an inclined striker (12),
which strikes the projecting tongues (1_a_) of the lids of the
buckets in turn. There is fixed to the sides of the generator a funnel
(13) with open bottom (13_a_) to direct the carbide, on to the
rocking grid (14) which is farther below the funnel than appears from the
figure. Gas passing up behind the funnel escapes through a duct (15) to
the gasholder. The ring (7) is rotated through the action of the weight
(16) suspended by the chain or rope (17) which passes round the shaft
(18), which is supported by the bracket (19) and has a handle for winding
up. An escapement, with upper limb (20_a_) and lower limb
(20_b_), is pivotally centred at (21) in the bracket (19) and
normally restrains the turning of the shaft by the weight. There is a
fixed spindle (24) supported on the bracket (23)--which is fixed to the
tank or one of the guide-rods--having centred on it a curved bar or
quadrant (25) running loose on the spindle (24) and having a crank arm
(26) to which is connected one end of a rod (27) which, at the other end,
is connected to the arm (28) of the escapement.
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