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Inks for Stamp Pads

1. – The composition consists preferably of 1 part gelatin, 1 part water, 6 parts glycerine; and 6 parts coloring
matter. A suitable black color can be made from the following materials: one part gelatin glue, 3 parts lampblack,
aniline black, or a suitable quantity of logwood extract, 10 parts of glycerine, 1 part absolute alcohol, 2 parts water,
1 part Venetian soap, 1/5 part salicylic acid. For red, blue, or violet: one part gelatin glue, 2 parts aniline of
desired color, 1 part absolute alcohol, 10 parts glycerine, 1 part Venetian soap, and 1/5 part salicylic acid.

The following are additional recipes used for this purpose:

2. – Mix and dissolve 2 to 4 drachms aniline violet, 15 ounces alcohol, 15 ounces glycerine. The solution is poured on the
cushion and rubbed in with a brush. The general method of preparing the pad s to swell the gelatin with cold water, then
boil and add the glycerine, etc.

3. – Mix well 16 pounds of hot linseed oil, 3 ounces of powdered indigo, or a like quantity of Berlin blue, and 8 pounds
of lampblack. For ordinary sign-stamping an ink with out the indigo might be used. By substituting ultramarine or
Prussian blue for the lampblack, a blue “ink” or paint would result.