Toolmakers' aprons, factory shades and other inflammable materials may be rendered absolutely fireproof by being treated with the following solution: To ½ pound tungstate of soda add 2 quarts of water, or enough to entirely dissolve it, and bottle up tightly. This stock solution is to be added to sufficient water required to soak the article in the proportion of one-fifth the above solution to the required water. After being soaked, hang the article up to dry. Fireproofing factory shades at windows near gas jets or the cloth aprons worn when working over a fire in hardening and tempering tools, etc., will often save bad fires or serious accidents.
E. W. Norton.
To waterproof leather and leave it soft and pliable, apply a mixture of 4 parts castor oil and 1 part raw india rubber, by weight. Heat the oil to 250 degrees P., then add the rubber, cut into small pieces. Gradually stir until the rubber is completely dissolved and then pour into a suitable vessel and let cool. If used on dark leather add sufficient printer's ink to give the dark color. E. W. Norton.
To waterproof tool bags or cases made of duck or other cloth, either of the following formulas may be used:
Use ½ pound of alum and 2 ounces of saltpeter dissolved in 1 quart of water. Immerse the article to be waterproofed in this mixture for 40 minutes, and boil hard; then rinse in cold hard water, hang up and let dry thoroughly before using.
Melt ½ pound of paraffine wax and mix in 1 quart of gasoline. Immerse the article in this and wring out and spread out to dry. In a short time it is ready to use. ______E. W. Norton.
To protect the woodwork around or near a forge apply three coats of 3 parts alum and 1 part copperas, dissolved in water. Apply hot, and only allow sufficient time between applications for the preparation to saturate the wood. Follow this with a fourth coat composed of solution of copperas made to the consistency of paint by mixing with fireclay. This treatment will not only render the wood fireproof but will preserve it for many times its ordinary life.
Another fireproofing mixture for the same purpose is composed of 3 parts ground wood ashes and 1 part boiled linseed oil. This is applied with a brush.
Still another fireproofing treatment consists of three applications of a hot solution of phosphate of ammonia. The last two treatments require renewing at least once a year. B. W. Norton.