Tobacco: Growing, Curing, & Manufacturing: A Handbook for Planters in All Parts of the World
Science
Tobacco: Growing, Curing, & Manufacturing: A Handbook for Planters in All Parts of the World
Tobacco; Tobacco industry
_Stripping and Sorting._—Quantities of leaf-tobacco are shipped in a
condition deprived of their stem and midrib, and are then known as
“stripts.” Those which are not received in this state, after having been
damped, are passed through the hands of workmen, who fold each leaf edge
to edge, and rip out the midrib by a deft twirl of the fingers,
classifying the two halves of each leaf, and ranging the sorts in
separate piles as smooth as possible. The value of the leaf greatly
depends upon the dexterity with which the stripping is done, as the
slightest tear deteriorates it. Stripts require sorting only. The
largest and strongest leaves are selected for cutting and spinning; the
best-shaped are reserved for the wrappers of cigars; broken and
defective pieces form fillers for cigars; and the ribs are ground to
make snuff. For the manufacture of “bird’s-eye” smoking-tobacco, the
leaves are used without being previously stripped.
[Illustration: FIG. 14.]
[Illustration: FIG. 15.]
[Illustration: FIG. 16.]
[Illustration: FIG. 17.]
_Cutting._—Cutting is the process by which the damped leaves, whether
stripped or not, are most extensively prepared for smoking in pipes and
cigarettes. The tobacco-cutter which is in general use in this country
is shown in Figs. 14 (side elevation), 15 (sectional elevation), 16
(front elevation), and 17 (plan). The main frames _a_ are united by
stretcher-bolts _b_; _d_ is a wooden-surface feeding-roller, on which
the tobacco is pressed and cut; _c_ are the upper compressing- and
feeding-rollers, mounted in _e_, carriage-plates extended backwards,
forming the sides of the feeding-trough, and hinged to the axle _m_; _f_
are levers; _g_, links by which the weight _w_ presses down the upper
rollers; _h_, a crank, and _i_, a connecting-link for working; _j_, the
cross-head to which the knife _k_ is fixed; _l_, side-levers or
radius-bars for guiding the knife, hinged on the eccentric ends of the
axle; _m_, an axle held in bearings at the back of the machine; on its
middle part, which is concentric with its own bearings, are hinged the
top roll carriage-plates _e_, whilst on its projecting ends, which are
slightly eccentric, the knife-levers _l_ are hinged; _n_ is a worm-wheel
segment; _o_, a worm; _p_, a hand-wheel for turning the eccentric
spindle _m_ through a part of a revolution in its bearings, for
adjusting the contact of the knife with the nose-plate _q_; _r_, a worm;
_s_, a worm-wheel; _t_, a worm-pinion for giving simultaneous movement
to all the rollers; _u_, a spindle, “universal jointed” at both ends,
for driving the upper rollers in positions varying with the thickness of
the feed; _v_, a saw-toothed ratchet-wheel, moved intermittently by a
catch _x_, link _y_, and stud-pin _z_, _v_ being changeable, and the
eccentricity of _z_ variable, for the purpose of regulating the fineness
of the cutting. Both ends of the knife move at the same speed, and its
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