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Bishop, J. Leander (John Leander), 1820-1868 / A history of American manufactures from 1608 to 1860 : exhibiting the origin and growth of the principal mechanic arts and manufactures, from the earliest colonial period to the adoption of the Constitution ; and comprising annals of the industry of the United States in machinery, manufactures and useful arts, with a notice of the important inventions, tariffs, and the results of each decennial census
Volume 3 (1868)

The great iron works of the United States,   pp. 475-495

Page 487

peculiarity, and the rifling is another. The thickness, length, and posi-
tion of the wrought-iron band, and thickness-of the cast-iron are also
arranged by a regular rule.
In 1866, was also made the Parrott twenty-pounder Rifle, and
before April, 1861, the thirty-pounder Gun and the Parrott projectile,
first and exclusively used for this Gun, as well as for all the larger
calibres afterward made, and subsequently adopted for the ten and
twenty pounder Guns.
This projectile is cylindrical, with a flat base, and rounded but
pointed end. It is made to " take" the grooves by the expansion of a
brass ring cast upon the projectile near the- base. The ring being so
disposed as to be " flush" with the sides and bottom of the projectile,
no irregularity whatever is presented, and the projectile can be entered
with perfect freedom into the Gun. For the larger calibres, the Par-
rott projectiles appear to be peculiarly well suited, and have performed
well up to six hundred pounds in weight from a Gun of twelve inch
Before April, 1861, Mr. Parrott had made the ten, twenty, and
thirty-pounder Guns. This he had done without any order from the
Government, and entirely according to his own views of the principles
to be followed in Rifled Ordnance. At the commencement of the late
Rebellion all those he had on hand were taken by the Ordnance De-
partment, and to their performance alone is he indebted for the press-
ing orders which flowed in, and the very large number supplied in
Late in 1861, Mr. Parrott made the one-hundred-pounder, and early
in 1862 the eight inch or two-hundred-pounder Gun.   These Guns
were in each case made and offered for trial without any order, and
the large calls for them were the result of the impression made by the
Guns themselves. Both were mounted in the batteries at Yorktown,
and their powers, as there exhibited, were highly commended. An
interesting account of them was given by the Prince de Joinville, an
eye-witness, showing that they were in advance of any other attempt
at making heavy Rifled Cannon.
In pursuance of the same course of action, Mr. Parrott made, in 1862,
a ten-inch or three-hundred-pounder Hifle. This was only tried in
service at Charleston; the first one was unfortunately disabled by the
bursting of a shell, which carried off about three feet from the end of
the Gun. It was, however, used to a considerable extent after the
accident; while another Gun of the same kind was fired twelve hun-
dred rounds, and then only failed from the same cause as the first.
The Parrott Guns continued to be largely used in the War, both in

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