CHAPTER XVII.
INKS.
RUBBER STAMP INK.
| Aniline blue soluble, 1 B | 3 | parts. |
| Distilled water | 10 | ” |
| Acetic acid | 10 | ” |
| Alcohol | 10 | ” |
| Glycerine | 70 | ” |
For other colors the following aniline colors may be substituted in proportions given:
| Methyl violet, 3 B (violet) | 3 | parts. |
| Diamond fuchsin I, (red) | 2 | ” |
| Methyl green yellowish | 4 | ” |
| Vesuvin, B (brown) | 5 | ” |
| Nigrosin, W (blue black) | 4 | ” |
For very bright red 3 parts of Eosin BBN. are used. In this case the acetic acid must be omitted. In all cases the colors should first be rubbed up with the water in a mortar, and the glycerine should be added gradually. These inks will answer for the hektograph.
Hektograph Ink.—Aniline color, 1 part; water, 7 parts; glycerine, 1 part. A little alcohol may be used with advantage to dissolve the aniline color. It can be expelled by heating if it proves objectionable.
Aniline Ink Vehicle.—Prof. E. B. Shuttleworth, of Toronto, Ont., suggests the use of castor oil in place of vaseline and other vehicles for typewriter ink. The aniline colors may first be dissolved in alcohol, and the solution may be added to the oil. They may also be dissolved directly in the oil in which most of them are soluble.
Indelible Stamping Inks.—I. Asphaltum, 1 part; oil of turpentine, 4 parts; dissolve and temper with printer’s ink. The ink may be omitted, and solid dry color added.
II. Sodium carbonate, 22 parts; glycerine, 85 parts; dissolve and rub up in a mortar with gum arabic, 20 parts. In a separate vessel dissolve silver nitrate, 11 parts; in officinal aqua ammonia, 20 parts. Mix the two solutions, and heat to the boiling point, 212° F. (100° C.). After it darkens, add Venice turpentine, 10 parts. After applying to the cloth, a hot iron should be applied, or it should be exposed to the sun.