rawing rollers to the conductor. The
conductor of a finisher card is made in two widths, so that half the
width of the film enters one section and the other half enters the
other section. These two parallel sheets, split from one common sheet,
traverse the two conductors and are ultimately delivered as two
slivers about 6 inches above the point or plane in which the 10 or 12
slivers entered, and on to what is termed a "sliver plate." The two
slivers are then guided by horns projecting from the upper surface
of the sliver plate, made to travel at right angles to the direction
of delivery from the mouths of the conductors, and then united to
pass as a single sliver between a pair of delivery rollers on the
left of the feed and delivery side and finally into a sliver can.
In special types of finishing cards, an extra piece of
mechanism--termed a draw-head--is employed. The machine illustrated
in Fig. 15 is provided with this extra mechanism which is supported
by the small supplementary frame on the extreme right. This special
mechanism is termed a "Patent Push Bar Drawing Head," and the
function which it performs will be described shortly; in the
meantime it is sufficient to say that it is used only when the
slivers from the finisher card require extra or special treatment. A
very desirable condition in connection with the combination of a
finisher card and a draw-head is that the two distinct parts should
work in unison. In the machine under consideration, the feed and
delivery rollers of the card stop simultaneously with the stoppage
of the draw-head mechanism.
One of the chief aims in spinning is that of producing a uniform
thread; uniform not only in section, but in all other respects. A
so-called level thread refers, in general, to a uniform diameter,
but there are other equally, if not more, important phases connected
with the full sense of the word uniform.
It has already been stated that in the batching department various
qualities of jute are mixed as judiciously as possible in order to
obtain a satisfactory mixture. Fibres of different grades and marks
vary in strength, colour, cleanness, diameter, length and suppleness;
it is of the utmost importance that these fibres of diverse
qualities should be distributed as early as possible in the process
so as to facilitate the subsequent operations.
[Illustration: _By permission of Messrs. James F. Low & Co., Ltd. _
FIG. 16 WASTE TEAZER]
However skilfully th
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