Chambers DictionaryChamber's 20th Century Dictionaryπ
lacker See Lacquer
Military DictionaryMilitary Dictionary and Gazetteerπ₯
lacker A composition made use of for preserving iron cannon,
carriages, shot, etc. The following are the proportional parts of
compositions made use of for preserving iron cannon: (1) Pulverized
black lead, 12; red lead, 12; litharge, 5; lampblack, 5; linseed oil,
66. This composition is to be boiled gently about twenty minutes, during
which time it must be constantly stirred. (2) Ground umber, 3.75;
pulverized gum shellac, 3.75; ivory-black, 3.75; litharge, 3.75; linseed
oil, 78; spirits of turpentine, 7.25. The oil must be first boiled half
an hour; the mixture is then boiled twenty-four hours, poured off from
the sediment, and put in jugs, corked. (3) Coal-tar (of good quality), 2
gallons, and spirits of turpentine, 1 pint. In applying lacker, the
surface of the iron must be first cleaned with a scraper and a wire
brush, if necessary, and the lacker applied hot, in two thin coats, with
a paint-brush. It is better to do it in summer. Old lacker should be
removed with a scraper, or by scouring, and not by heating the guns or
balls, by which the metal is injured. About 5 gallons of lacker are
required for 100 field-guns and 1000 shot; about one quart for a
sea-coast gun. Before the lacker is applied every particle of rust is
removed from the gun, and the vent cleaned out.
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