| 1. | Black-lead pulverized | 12 lbs.
|
| | Red-lead | 12 lbs.
|
| | Litharge | 5 lbs.
|
| | Lampblack | 5 lbs.
|
| | Linseed Oil | 66 lbs.
|
Boil it gently about twenty minutes, during which
time it must be constantly stirred.
|
| 2. | Umber, ground | 3.75 lbs.
|
| | Gum-shellac, pulverized | 3.75 lbs.
|
| | Ivory, black | 3.75 lbs.
|
| | Litharge | 3.75 lbs.
|
| | Linseed oil | 78.00 lbs.
|
| | Spirits turpentine | 7.25 lbs.
|
The oil must be first boiled half an hour. The mixture
is then boiled twenty-four hours, poured of from the sediment, put in jugs
and corked.
|
| 3. | Coal Tar of good quality | 2 galls.
|
| | Spirits of turpentine | 1 pint.
|
The turpentine to be added in small quantities during
the application of the lacquer.
|
| 4. | Anti-corrosion | 40 lbs.
|
| | Grant's black, ground in oil | 4 lbs.
|
| | Red-lead, as a dryer | 3 lbs.
|
| | Linseed oil | 4 galls.
|
| | Spirits turpentine | 1 pint.
|
This mixture, when well stirred and incorporated, will
be fit for use; but, as by long keeping in this state it becomes hard, no more
should be mixed than may be required for immediate use.
|
Anti- Corrosion.
| Slag from iron foundries, pounded | 12 lbs.
|
| | Chalk | 12 lbs.
|
| | Soot, common | 1 lb.
|
In applying lacquer, the surface of the iron must be first
cleaned with a scraper and a wire brush, if necessary, and the lacquer applied
hot, in two thin coats, with a paint-brush. It is best done in summer.
|
Old lacquer should be removed with a scrapper, or by scouring, and not by
heating the guns or balls, by which the metal is injured.