Two centuries of shipbuilding by the Scotts at Greenock
(201) Page 115
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The Platers' Shed. 97
Of the platers' shed, where the plates, angles, bulbs,
bars, etc., are machined, two views are given on Plates XLII.
and XLIIL, facing pages 96 and 98 respectively. It may be
said generally that the machines are designed to deal with
plates up to 50 ft. in length, and with angles up to 60 ft. in
length, and of corresponding sections. It follows that the
straightening and bending rolls, edge-planers, and punching
and shearing machines, are of great power. It is scarcely
necessary to make detailed references to all of the tools for
these and other purposes.
All the tools are electrically driven. The plate-flattening
rolls, which have 15 and 20 horse-power reversible motors,
take plates 8 ft. wide, and the rolls are from 21^ in. to 19 in.
in diameter. The bending rolls are driven by a 20 horse-
power motor. The plate-edge planers, shown to the left in
the view, Plate XLII., facing page 96, are operated by
16 horse-power motors, and the plate is held on the table by
means of hydraulic rams as well as screw-jacks. For drilling
and countersinking plates there are several modern tools,
each actuated by an independent electric motor. One of these
is a three-standard drill, to deal with plates of the largest
size. The spindles have a rise and fall of 10 in., and are
fitted with self-acting, as well as hand, feed, and with
the usual rack arrangement for the traverse of the head.
Several radial countersinking machines, with 11 -ft. jibs and
spindles 2^ in. in diameter, are driven by 10 horse-power
motors. There are many heavy punching and shearing
machines, nearly all of them having 42-in. gaps, so that
they can punch holes at any part of the widest plates.
As a rule, they are arranged to punch l|-in. holes through
lj-in. plates at the rate of thirty holes per minute. The
shears are of corresponding power.
For dealing with angles and bars there are several
interesting tools, in addition to shears and punches. Some
of the shears cut 8-in. by 4-in. angles, and are driven by
H
Of the platers' shed, where the plates, angles, bulbs,
bars, etc., are machined, two views are given on Plates XLII.
and XLIIL, facing pages 96 and 98 respectively. It may be
said generally that the machines are designed to deal with
plates up to 50 ft. in length, and with angles up to 60 ft. in
length, and of corresponding sections. It follows that the
straightening and bending rolls, edge-planers, and punching
and shearing machines, are of great power. It is scarcely
necessary to make detailed references to all of the tools for
these and other purposes.
All the tools are electrically driven. The plate-flattening
rolls, which have 15 and 20 horse-power reversible motors,
take plates 8 ft. wide, and the rolls are from 21^ in. to 19 in.
in diameter. The bending rolls are driven by a 20 horse-
power motor. The plate-edge planers, shown to the left in
the view, Plate XLII., facing page 96, are operated by
16 horse-power motors, and the plate is held on the table by
means of hydraulic rams as well as screw-jacks. For drilling
and countersinking plates there are several modern tools,
each actuated by an independent electric motor. One of these
is a three-standard drill, to deal with plates of the largest
size. The spindles have a rise and fall of 10 in., and are
fitted with self-acting, as well as hand, feed, and with
the usual rack arrangement for the traverse of the head.
Several radial countersinking machines, with 11 -ft. jibs and
spindles 2^ in. in diameter, are driven by 10 horse-power
motors. There are many heavy punching and shearing
machines, nearly all of them having 42-in. gaps, so that
they can punch holes at any part of the widest plates.
As a rule, they are arranged to punch l|-in. holes through
lj-in. plates at the rate of thirty holes per minute. The
shears are of corresponding power.
For dealing with angles and bars there are several
interesting tools, in addition to shears and punches. Some
of the shears cut 8-in. by 4-in. angles, and are driven by
H
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Images and transcriptions on this page, including medium image downloads, may be used under the Creative Commons Attribution 4.0 International Licence unless otherwise stated. 
| Histories of Scottish families > Two centuries of shipbuilding by the Scotts at Greenock > (201) Page 115 |
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| Permanent URL | https://digital.nls.uk/95738071 |
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| Description | Scotts' Shipbuilding & Engineering Company Ltd. London : Engineering, 1906. Partly reprinted from "Engineering". With plates, including portraits, and illustrations. |
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| Shelfmark | T.326.a |
| Additional NLS resources: | |
| Attribution and copyright: |
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More information
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| Description | A selection of almost 400 printed items relating to the history of Scottish families, mostly dating from the 19th and early 20th centuries. Includes memoirs, genealogies and clan histories, with a few produced by emigrant families. The earliest family history goes back to AD 916. |
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