As the pieces are thus detached from the bulk, they are laid on stools or tables, or in stalls or carts, according to the method by means of which the necessary amount of oil and water is to be added for the essential process of lubrication; this lubrication enables the fibre to work freely in the various machines.

CHAPTER VI.  BATCHING

Softening and Softening Machines.  Two distinct courses are followed in the preparation of the jute fibre after it leaves the bale opener, and before it is carded by the breaker card.  These courses are designated as—­

      1.  Hand Batching.
      2.  Machine Batching.

In the former process, which is not largely practised, the pieces of jute are neatly doubled, while imparting a slight twist, to facilitate subsequent handling, and laid in layers in large carts which can be wheeled from place to place; if this method is not convenient, the pieces are doubled similarly and deposited in large stalls such as those illustrated in Fig. 10.

On the completion of each layer, or sometimes two layers, the necessary measured amount of oil is evenly sprayed by hand over the pieces from cans provided with suitable perforated outlets—­usually long tubes.  After the oil has been added, water, from a similar sprayer attached by tubing to a water tap, is added until the attendant has applied what he or she considers is the proper quantity.  The ratio between a measured amount of oil and an unmeasured amount of water is thus somewhat varied, and for this reason the above method is not to be commended.  A conscientious worker can, however, with judgment, introduce satisfactory proportions which are, of course, supplied by the person in charge.  In Fig. 10, the tank on the right is where the oil is stored, while the oil can, and the spray-pipe and tube for water, are shown near the second post or partition on the right.

[ILLUSTRATION:  FIG. 10 HAND-BATCHING DEPARTMENT WITH UNPREPARED AND PREPARED FIBRE]

The first stall—­that next to the oil tank—­in Fig. 10 is filled with the prepared pieces, and the contents are allowed to remain there for some time, say 24 hours, in order that the material may be more or less uniformly lubricated or conditioned.  At the end of this time, the pieces are ready to be conveyed to and fed into the softening machines where the fibres undergo a further process of bending and crushing.

All softening machines for jute, or softeners as they are often called, are similar in construction, but the number of pairs of rollers varies according to circumstances and to the opinions of managers.  Thus, the softener illustrated in Fig. 11, which, in the form shown, is intended to treat jute from the above-mentioned stalls, is made with 47, 55, 63 or 71 pairs of rollers or any other number which, minus 1, is a measure of 8.  The sections are made in 8’s.  The illustration shows only 31 pairs.