The Cultivation and Manufacture of TeaMoney, Edward
Science
The Cultivation and Manufacture of Tea
Money, Edward
Tea
Though the signatures differ, I conceive Mr. C. B. Fergus, C.E., wrote
the second as well as the first. He has evidently pondered the matter
well. Let others do so too, and I foretell that the day is not far
distant when _flat_ Tea gardens will, in a great measure, be cultivated
by steam or animal power. When this is so, even 8 annas (say 10_d._)
per lb. for our Tea all round should pay us well.
_Tea Manufacturing Machinery._
The processes in Tea manufacture, as generally practised in India
to-day, are--
1. Plucking.
2. Withering.
3. Sorting green leaf in a measure, and separation of Pekoe Tips.
4. Rolling.
5. Fermenting.
6. Drying or firing.
7. Sorting.
8. Final heating before packing.
No. 3 is not always done, the others invariably.
I will consider the machines invented for each process, in the order of
the said processes.
_Plucking._--No machine has ever been invented for this, and I do not
think any is possible.
_Withering._--In any but continued wet weather no artificial means are
necessary. The leaf, spread thinly and exposed to the action of the
air below and around (former attained by any kind of mesh), withers
perfectly.[96] In continued wet weather artificial means are sometimes
required. The various Dryers in use (see further on) are sometimes
supposed to furnish the means, but their use necessitates much labour,
nor is the result satisfactory. A good withering machine (it must be
on a large scale) might, I think, be easily invented; there is none at
present. Why do none of the inventors of other Tea machinery try to
succeed in this?
_Sorting Green Leaf._--This is sometimes attempted in a rough way by
the use of sieves of different meshes. To separate the fine from the
coarse leaf, and in some cases to eliminate the Pekoe tips, is the
object. A machine by John Greig and Co., of Edinburgh, professes to do
the latter. I have never seen it, but I doubt any machine abstracting
the Pekoe tips alone. A machine which would, however, separate the fine
from the coarse leaf previous to rolling is, I think, quite feasible,
and it would conduce much to good Tea. This, again, is an opening for
inventors.
_Rolling._--This is perhaps the most important of all processes in Tea
manufacture. The object of it is to break the cells in the Tea and
liberate the sap (fermentation could not take place otherwise), and
further to give a tight roll or twist to the leaf. Formerly this was
always done by hand (it is so done in China, I believe, to this day),
but the process was lengthy, expensive and dirty. I might perhaps add
inefficient, for doubtless machine-rolled Tea is better done (better in
appearance, better in liquor) than hand-rolled.
I will now consider--
_Tea Rolling Machines._
The inventors are Jackson, Kinmond, Haworth, Lyle, Greig and Thompson.
There may be others, but I have not heard of them.
Public-domain text, read in full here on John Shaqi.
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