This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 edition. Excerpt: ...to a composition formed in the following way: Pure and finely divided copper, such as that obtained by the reduction of sulphate of copper with zinc clippings, 20 to 36 parts, according to the degree of hardness desired in the cement, dissolved in a sufficient quantity of sulphuric acid to make a thick ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 edition. Excerpt: ...to a composition formed in the following way: Pure and finely divided copper, such as that obtained by the reduction of sulphate of copper with zinc clippings, 20 to 36 parts, according to the degree of hardness desired in the cement, dissolved in a sufficient quantity of sulphuric acid to make a thick paste; with this is incorporated by trituration in a mortar, mercury, 70 parts. The mass is soft, but hardens at tne end ol some hours. For use it is heated to 212 F. (100 0.)j and powdered in an iron mortar heated to 302 F. (150 C.); it then assumes the consistency of wax and is harder in proportion, as it contains more copper. Tiles to Iron Use a gutta percha cement, made by melting together in an iron pan 2 parts of common pitch and 1 part of gutta percha. Stir them well together until thoroughly incorporated and then pour the liquid into cold water. When cold it is black, solid and elastic, but it softens with heat, and at 100 F. is a thin fluid. Also try bedding in plaster of paris. Tin to Wood Melt in a thick-walled iron vessel 1 part of yellow wax, stir in 2 parts ot gutta percha chips to complete dissolution and dissolve therein 2 parts of shellac and 0.1 part of boiled linseed oil. After the mass has cooled off pour it upon a somewhat moistened metal or stone plate; next knead and shape into bars. Dry well the wooden or tin parts to be cemented and apply evenly the melted cement on the wood and tin. Press the articles together moderately and allow them to remain for 24 hours. To mart the tin by scouring with emery is advantageous. The process should not be conducted in too cool a place. METALS TO LEATHER, CLOTH, WOOD, ETC. Cloth to Metal 1.--Cloth can be cemented to polished iron shafts by first painting the shafts with a coat of...
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Add this copy of Scientific American Handy Book of Facts and Formulae to cart. $20.57, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Scientific American Handy Book of Facts and Formulae to cart. $30.01, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Scientific American Handy Book of Facts and Formulae to cart. $51.40, new condition, Sold by Booksplease rated 3.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2022 by Legare Street Press.
