ALLOYS German Silver for Castings, &c. Lead 3 parts; nickel 20: zine 20; copper 60 Genuine German Silver. Copper 404 parts: nickel 31: zinė 251; iron 21 - Mix Gilding Metal Copper 4 parts: brass 1: tin 1 Fuse together. Another. Copper 14 parts; zine 6; tin 4. To Separate Gold from Gilt Copper or Silver. Take a solution of borax in water, apply to the gilt surface, and sprinkle over it some finely powdered sulphur; make the article red hot, and quench it in water then scrape off the gold, and recover it by means of lead. Gold in Grains. Gold 3 parts; silver 1. stream, from a moderate height, ate by pouring it in a smail cold water; then dissolve the silver with nitric acid, and wash well in pure water; next heat the grains, to give them a proper lustre. Common Gold Spanish copper 16 parts: silver I: gold 2. Melt together. Tin 2 parts: lead 3 bismuth 5. Melt. This alloy melts at 197° Pewter 1 Tin 109 parts; antimony 17. Mix T 2. Zinc 1 part; copper 3. lead 8; tin 60 Melt the copper, then add the rest. 3. Fine. Tin 50 parts. antimony 4; bismuth I; copper 1. Mix, as before. 4. French. Lead 9 parts: tin 41. Mix. Keller's Medal Alloy Tin 9 parts; copper 89: zine:2.35 As Gun Metal. Brass 100 parts; spelter 13; tin 6 Miz Copper 9 parts; tin 1 1. Brass 2 parts; copper 3. 2 Copper 5 parts: zine 1 Another Inst Pinchbeck Melt under charcoal dust. Melt the copper, then add the zine Take grain tin. melt it in an iron vessel, and stir it, while cooling, until it becomes a powder; then sift it. Tin in Grains. Take Cornish grain tin, melt it, and pour it into a wooden box, well rubbed on the inside with whiting or chalk; close the cover, and continue shaking it violently until the tin is reduced to powder; then wash it in clean water, and dry it immediately. Mosaic Gold or Molu Take copper and zine, equal parts. Melt at the lowest temperature that will fuse the former; then mix by stirring, and add more zine, until the fused alloy becomes perfectly white; lastly, pour it into moulds. The proportion of zine to the copper is from 50 to 55 per cent., exclusive of what is lost by the heat employed. Hard White Metal. Tin 1 part; spelter 3; brass 20. Mix. Turners Brass. Brass 98 parts; lead 2. Mix.・ Titania, or Britannia Metal. 1. Plate brass 2 parts; tin 2, bismuth 2; antimony 2; copper 1; arsenic 1. Mix, and add this alloy, at discretion, to melted tin. 2. Spanish. Of Spanish Titania metal there are two kinds. The first is made thus: Antimony 4 parts; tin 2; arsenic 1. The second is made in the following manner: Scrap iron 1 part; antimony 2; nitre a little. Melt, and harden one pound of tin with 2 oz of this composition. A little arsenic improves the color of this alloy. Tutenag. Tin 2 parts; bismuth 1. Fuse. Ring Gold. Spanish copper 6 parts; silver 3; gold 5; Mix. Prince Rupert's Metal. Copper 2 parts; melt, and add zine 1 part. Another. Lead 20 parts; bismuth 12; antimony 1. Fuse. Yellow Dipping Metal. Copper 19 parts; spelter 6. Mix. A Metal that resembles Silver. Tinoz.; copper 1 lb. This alloy will make a pale bell metal that will roll and ring very near to sterling silver. Silver Dust. Take silver, dissolve it in nitric acid, and precipitate it with slips of bright copper; wash the powder in spirits, and dry it. Imitation Platina. Pale brass 8 parts; spelter 5. Mix. Dessaussy's Steel. Copper 100 parts; tin 14. This alloy may be hardened and sharpened in a similar way to steelkomsV Stereotype Metal, S Lead 18 parts; antimony 4 parts; bismuth 2 parts. Melt. Lead 16 parts; antimony 3 parts; tin 5 parts; copper 2 parts. Lead 20 parts; tin 8; antimony 1. Speculum Metal. Copper 43 parts; tin 20. Mixondro han the fused to cavs Another. Copper 7 parts; melt, and add zinc 3 parts, tin 4. Zinc and copper, equal parts. Mix. To make Iron resemble Gold. Take of linseed oil 3 oz tartar 2 oz.; yolk of eggs, boiled hard and beaten, 2 oz.; aloes oz.; saffron 5 grains; turmeric 2 grains. Boil together in an earthen vessel, and with it wash the iron, and it will look like gold, Should there not be linseed oil enough more be added. may be Queen's Metal. on Lead 1 part; bismuth 1; antimony 1 tin 9. Mix and S Another. Tin 9 parts; bismuth 1; lead 2; antimony 1. Mix by melting. el Another hot at, Tin 1000 parts; regulus of antimony 80; bismuth 10; copper 40. Melt the copper, then expertly add the rest, and mix well together.. Purified Quicksilver. 263186 Quicksilver 1 part; iron filings 1, Distil in an iron retort, into a vessel containing water. Bronze Metals. For medals, and small castings-copper 95 parts; tin 4. Another Kelly's Copper 91 parts; zine 6; tin 2 lead 1. 001 mongol Blanched Copper." nbanerade Copper 8 parts; arsenic party torgad song & dium Manheim Goldian paling $1 baad Copper 3 parts; zinc 1. Melt separately, then suddenly mix them, and stir well sveo u phi pedraj & y romi an paling di beol Red Tombac. Copper 11 parts; zinc 2. Mix. FURNITURE PASTE. 1. Melt 1 pound of beeswax with pint of linseed oil, and add § oz. alkanet root; keep it at a moderate heat till sufficiently colored, then remove from the fire, add pint of oil of turpentine, strain through muslin; and put it into small gallipots to cool,) 2. Scrape 4 oz of wax, and put it into a pipkin with as much oil of turpentine as will cover it, and 1 oz of powdered or ite with a gentle heat, and stir in sufficient Indian red to oil 3. Equal weights of beeswax, spirit of turpentine, and linseed BRONZE POWDER, The best methods of preparing these powders are probably kept secret. The following are some of the published recipes: 1. Gold leaf, or alloys of gold, reduced to powder by grinding them with sulphate of potash, or with honey, and washing away the extraneous matter with hot water, and drying the metallic powder. 2. Dutch metal, and other similar alloys, treated in the same way. 3. Verdigris 4 oz; tutty 2 oz ; sublimate 1 dr.; borax 1 dr.; nitre 1 dr. Mix them into a paste with oil, and fuse the mixture in a crucible. This has failed in some hands, perhaps from the being factitious. vrendica lo culign tutty 1:1 4. Mix together 100 parts ts of sulphate of copper, and 50 of crystallized carbonate of soda; apply heat till they unite. Powder the mass, when cold, and add 15 parts of copper filings; mix well, and keep it at a white heat for twenty minutes. Wash and dry the product BALLS FOR SCOURING BREECHES BALLS, CLOTHES 1. Bathbriek 4 parts; pipeelay 8; pumice 1; softsoap 1; ochre, umber, or other color, to bring it to the desired shade, q. s.; ox-gall to form a paste. Make it into balls, and dry them. 2. Pipeclay 4 oz.; fuller's-earthoz; whiting oz; white pepper oz ox-gall sufficient to form it into a pasto de recco), 3. Pipeclay 3 oz.; white pepper 1 dr.; starch 1 dr, orris powder 14 dr. It may be kept in powder, or formed into balls, as above. |