Home › Cements And Uniting Bodies › Cement for Leather Belting

Cement for Leather Belting

over is next rectified with one third its weight Take of common glue and American isinglass, of water, once or oftener, until it is colorless; equal parts; place them in a glue-pot and add it is then highly volatile and of .680 specific water sufficient to just cover the whole. Let gravity. The product is then shaken up with it soak 10 hours, then bring the whole to a nitro-muriatic acid, or chlorine, in the proporboiling heat, and add pure tannin until the tion of pint of acid to each gallon of the whole becomes ropey or appears like the white liquid. This is the lightest fluid known, and of eggs. Apply it warm. Buff the grain off the leather where it is to be cemented; rub the joint surfaces solidly together, let it dry a few hours, and it is ready for use; and, if properly put together, it will not need riveting, as the cement is nearly of the same nature as the leather itself. We know of no cement better either for emery wheels or emery belts than the best glue. In an experience of fifteen years we never found anything superior. yet its vapor is the heaviest of gases. Mixed with alcohol, it dissolves all the resins, especially copal and India rubber, at the common temperature of the air; and it speedily evaporates, leaving them in a solid state. It mixes with the oils in all proportions; and has been used for making varnishes, and for liquefying oil paints, instead of turpentine. It is very volatile, and must be kept in close vessels. 2250: Cement for Uniting Sheet Gutta- Percha to Silk, &c. Gutta-percha, 40 pounds; caoutchouc, 3 pounds; shellac, 3 pounds; Canada balsam, or Venice turpentine, 14 pounds; liquid storax, 35 pounds; gum mastic, 4 pounds; oxide of lead, 1 pound. Mix as di-