!['The views and opinions of Brigadier General John Jacob, CB. Aide-decamp to the Queen; Aide-de-camp to the Governor General of India, &c. &c. &c.; late commanding in chief the British forces in Persia; at present commanding the Sind Irregular Horse, and Political Superintendent of the North-West frontier of Sind.' [‎236] (267/481)](https://iiif.qdl.qa/iiif/images/81055/vdc_100023512204.0x000001/8023.d.37._0267.jp2/full/!1200,1200/0/default.jpg "'The views and opinions of Brigadier General John Jacob, CB. Aide-decamp to the Queen; Aide-de-camp to the Governor General of India, &c. &c. &c.; late commanding in chief the British forces in Persia; at present commanding the Sind Irregular Horse, and Political Superintendent of the North-West frontier of Sind.' [‎236] (267/481)")
'The views and opinions of Brigadier General John Jacob, CB. Aide-decamp to the Queen; Aide-de-camp to the Governor General of India, &c. &c. &c.; late commanding in chief the British forces in Persia; at present commanding the Sind Irregular Horse, and Political Superintendent of the North-West frontier of Sind.' [236] (267/481)
The record is made up of 1 volume (446 pages). It was created in 1858. It was written in English. The original is part of the British Library: Printed Collections.
Transcription
This transcription is created automatically. It may contain errors.
236
of rifling adopted in them is the very worst possible. It is
only the two-grooved rijie in disguise. (See Fig. g.)
Let the shoulders of the grooves of a two-grooved rifle be
removed, as shown by the dotted line in the sketch, and
you have the Lancaster rifle.
But by the removal of these shoulders, the friction, if
the twist be considerable, becomes enormous: the ball
and the bore are not quite round, but nearly so ; wherefore,
as the ball is compelled to follow the twist of the bore, it
acts like a " cam," and endeavours to burst the gun; or
the dotted part in the sketch becomes a very acute wedge,
which the spiral motion causes to be driven with great
force into the bore as the ball is driven out.
The heat developed by the friction must be very great,
and the tendency of the gun to burst, or the shell to crush,
also very great.
It would be far better than this to use a four-grooved
rifle, with projections on the ball, even of iron, with a
greased leather patch.
One more remark appears requisite.
The twist I now use, and which I find best, is one turn
in thirty inches, or, better still, four-fifths of a turn in the
length of the barrel.
This I find to maintain the spiral motion of the ball
quite up to the last, in the long ranges attained by my
rifles ; and a rapid spiral motion is necessary to preserve
the light end of the ball truly foremost throughout its long
flight; which it is perfectly successful in doing.
The grooves should he full deep, and of breadth equal to
that of the lands; the bands on the balls or shells being
made to correspond so as to fit the grooves nicely, but quite
easily, with a greased patch round them. It may be well
to observe that thin cotton cloth, well washed to free it
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The views and opinions of Brigadier General John Jacob, CB. Aide-decamp to the Queen; Aide-de-camp to the Governor General of India, &c. &c. &c.; late commanding in chief the British forces in Persia; at present commanding the Sind Irregular Horse, and Political Superintendent of the North-West frontier Region of British India bordering Afghanistan. of Sind.
Collected and Edited by Captain Lewis Pelly, author of 'Our North-West Frontier Region of British India bordering Afghanistan. '.
Publication details: Bombay, Smith, Taylor and Co. 1858.
Physical description: 8º.
- Extent and format
- 1 volume (446 pages)
- Arrangement
This volume contains a table of contents giving chapter headings and page references. Each chapter heading is followed by a detailed breakdown of the contents of that chapter. There is an alphabetic index at the back of the volume.
- Physical characteristics
Dimensions: 224mm x 145mm.
- Written in
- English in Latin script View the complete information for this record
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'The views and opinions of Brigadier General John Jacob, CB. Aide-decamp to the Queen; Aide-de-camp to the Governor General of India, &c. &c. &c.; late commanding in chief the British forces in Persia; at present commanding the Sind Irregular Horse, and Political Superintendent of the North-West frontier of Sind.' [236] (267/481), British Library: Printed Collections, 8023.d.37., in Qatar Digital Library <https://www.qdl.qa/archive/81055/vdc_100024086603.0x000044> [accessed 15 November 2024]
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- Reference
- 8023.d.37.
- Title
- 'The views and opinions of Brigadier General John Jacob, CB. Aide-decamp to the Queen; Aide-de-camp to the Governor General of India, &c. &c. &c.; late commanding in chief the British forces in Persia; at present commanding the Sind Irregular Horse, and Political Superintendent of the North-West frontier of Sind.'
- Pages
- front, back, spine, edge, head, tail, front-i, i-r:i-v, 1:6, 6a:6b, 7:20, 1:258, 260:446, ii-r:iii-v, back-i
- Author
- Jacob, John
- Usage terms
- Public Domain