The Preparation of Plantation RubberMorgan, Sidney
Science
The Preparation of Plantation Rubber
Morgan, Sidney
Rubber
In the successful working of a tank it is necessary, in order to obtain the
best results, to standardise all latex. This cannot be effected properly in
the tank itself, and hence it is the practice to dilute each lot of latex
to standard before it is run into the tank. In the ordinary way this would
entail a great deal of labour in handling the diluted latex. To obviate
this, the scheme outlined in the accompanying sketch has been suggested on
several occasions and in various quarters. Such a scheme or modification of
it has been put into successful practice on several estates. Although the
drawing was made some considerable time ago when estates were not then
prepared to go so far in this direction, subsequent modifications show only
minor differences which, while leaving the original principle intact,
testify to a fertility of resource in adapting the idea to existing
circumstances and buildings. The drawing is _in toto_ almost a replica of
the original installation now in successful use on the Kinrara Estate of
the Ledbury Rubber Company. On this company's Ledbury Estate likewise a
similar system is employed, except that the reception verandah is part of a
natural formation and needed no such direct raising. Several other estates
have now adopted the scheme, which has been proved to be of practical
value. The writers make no claim to originality in the idea, which might
have occurred to many independently on the introduction of coagulating
tanks.
[Illustration: RAISED VERANDAH FOR RECEPTION AND HANDLING OF LATEX.]
VERANDAH.--In reproducing the drawing it is believed that the sketch will
convey practically all the information required. It may be explained that
the coolies are allowed to enter only the outer part of the verandah. The
buckets are handed across the low wall into the care of factory coolies,
who strain the latex through gauze sieves into the latex cylinders.
LATEX RECEPTION VESSELS.--These cylinders may be similar to the tanks
commonly used for transport of latex from distant fields to the factory. An
80-gallon cylinder is easily mounted by its trunnions on a suitable iron
framework which is superimposed on a skeleton truck.
[Illustration: ANOTHER SET OF DILUTION TANKS ON RAISED VERANDAH.]
The latex is diluted down to standard in the cylinders, the truck is moved
opposite the compartment to be filled, and a light movable gutter is placed
beneath the vent of the outlet pipe. This pipe is fixed in the bottom of
the cylinder, and is provided with a large stop-cock which is operated by a
spanner key. The stop-cock should be of the simplest type, capable of being
taken apart and assembled in a minute or so. The orifices should be large
enough for a coolie to insert at least two or three fingers so as to
facilitate cleaning, and the pipe should have no right-angle bends.
Public-domain text, read in full here on John Shaqi.
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