ForsideBøgerPocketbook of Useful Form…and Mechanical Engineers

Pocketbook of Useful Formulæ and Memoranda
for Civil and Mechanical Engineers

Forfatter: Guilford L. Molesworth

Sider: 744

UDK: 600 (093)

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Side af 764 Forrige Næste
 ____________ =sb» _________________________ 428 Molesworth’s pocket-book Workshop Recipes—continued. Dubbing. 2 lbs. black resin. 1 lb. tallow. 1 gallon train oil. Cement for Cloth or Leather. 16 gutta-percha cut small j 4 india-rubber „ I 2 pitch „ > melted together and well mixed. 1 shellac „ I 2 linseed oil „ J 12 of amber. 12 of turpentine. 2 of resin. 2 of asphaltum. 6 of drying oil. 8 ounces of shellac. Ikon Lacquer. f 3 lbs. of asphaltum. or < i lb. of shellac. I 1 gallon of turpentine. Brass Lacquer. 2 ounces of sanclarach. 3 ounces of annatto. 4 8 ounces of shellac. J ounce of dragon’s (1 gallon of spirits of wine, blood resin. 1 gallon of spirits of wine. The article to be lacquered should be heated slightly, and the lacquer should be applied by means of a soft camel’s»hair brush. Whiting. Chalk reduced to a fine powder by levigation. Staining Wood. Mahogany colour .. Burnt sienna ground in vinegar. __ Walnut „ .. Dissolve in hot water 1 of soda with H vandyke brown and |th bichro- mate of potash. Red stain_________Dissolve dragon’s blood in spirits of wine. Black stain .. .. Dissolve permanganate of potash in water. French Polish. 3 ounces of shellac dissolved cold in a pint of spirits of wine; if desired, it may be darkened with “ dragon’s blood.