Deeds of a great railway : $b A record of the enterprise and achievements of the London and North-Western Railway company during the Great WarDarroch, G. R. S. (George Richard Sutton)
History
Deeds of a great railway : $b A record of the enterprise and achievements of the London and North-Western Railway company during the Great War
Darroch, G. R. S. (George Richard Sutton)
London and North-Western Railway; World War, 1914-1918 -- Transportation
Having recourse once again to an engine-lathe, we attach a "form" (or
guide) plate to the slide-rest, to the profile of which the nose and
shell-body together are blended externally. As we are now nearing
completion, the next item on the programme is to see how we stand for
weight, and in the event of the shell being a trifle on the heavy
side, we either take a light cut off, reducing ever so slightly the
diameter, or else we shorten the base. There remain now the base-plate
and the copper band to complete the whole; the former is either
screwed or slipped with a plain circumference into a recess in the
base, riveted over with a compressed air riveter, and faced to the
required thickness; the latter is pressed hydraulically into a groove,
then turned and grooved to the required diameter. A kind of miniature
Turkish bath now awaits the long-suffering object of our commiseration,
in which it is steamed and cleaned, then placed nose downwards over a
tank. In this unenviable position a stream of varnish is generously
sprayed with a hand pump up its inside. Thereafter it reposes in an
adjacent chamber or stove until the varnish is thoroughly dried and
baked; whence emerging, a pneumatic tapping machine is waiting to
clear the varnish from the thread of its nose. It is then "boarded"
both in regard to weight and overall dimensions, and if passed "A1" by
the inspector proceeds into bond, where it remains until "called up,"
"reporting" at a filling factory, and in due course being "drafted
over-seas."
Prior to quitting the workshop's busy hum and reverting with our
mind's eye to the "battle's magnificently stern array," where we may
compare to further, if superficial, purpose the projectile and its
mathematically proportioned features with the somewhat violent form of
gymnastic exercise in which it is about to delight, a word or two in
reference to the evolution of the copper band may not be held amiss,
in view of the important _rôle_ it plays relatively to the shell as a
whole. The process by which these copper bands or discs were evolved
was unique, and inasmuch as it was possible to effect a considerable
economy by the evolution of three separate and distinct bands from one
original sheet or square of copper, Crewe became responsible not only
for the bands components of the 6-inch shell, on the manufacture of
which she was exclusively concentrating her endeavours, but was able
concurrently to produce for other firms further bands components of
both 8-inch and 4·5-inch projectiles.
Public-domain text, read in full here on John Shaqi.
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