The hot air which is radiated dries the dots, and from thence the fabric
is taken up by other rollers or by any other method. The steam roller,
R", carries at one of its extremities a ratchet wheel whose teeth vary
in number according to the greater or less rapidity with which the tulle
is unrolled. It is actuated by a lever which receives its motion from
the eccentric, K.

[Illustration: IMPROVED MACHINE FOR DOTTING TULLAND OTHER LIGHT
FABRICS.]

In the table, T, there is a rectangular receptacle, _t_, containing
rasped or powdered velvet for the purpose of forming a reverse of the
dot. This powder attaches itself to the gum and imitates on the wrong
side of the fabric a dot similar to that on the upper or right side. The
velvet is wound upon the roller, _r_, and from thence passes under the
guiding roller, _r'_, the punches, and the second roller, _r"_. These
two latter rollers are solidly connected by a straight-edge fixed at the
extremity of the lever, L, whose other end is in continuous correlation
with the eccentric, M, which controls the lateral displacements;
while the eccentric, O, actuates, by means of the screw, Q, and the
ratchet-wheel, S, the longitudinal advance of the velvet. The eccentric,
M, is fixed upon an axle, A', which carries a wheel, U, having teeth
inclined with respect to its axis, and which derives its motion from the
Archimedean screw, N, fixed at one of the extremities of the cam-shaft,
A.

We have stated above that the maximum daily hand production of tulle
dotted in quincunxes of 0.04 of an inch is about one yard. At the rate
of 30 revolutions per minute, and for the same article as that just