The Practical Metal-workers' Assistant: ...: With the Application of the Art of Electro-metallurgy to Manufacturing Processes: ... |
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Results 1-5 of 27
Page 14
... medals . 607 609 Oxidizing silver ..... 609 Protection of silver surface ..... 609 Coating of iron with copper ..... 574 Cleaning of silver ............... . 610 Cyanide of potassium ..... 575 Cyanide of copper ...... 577 Peculiarities ...
... medals . 607 609 Oxidizing silver ..... 609 Protection of silver surface ..... 609 Coating of iron with copper ..... 574 Cleaning of silver ............... . 610 Cyanide of potassium ..... 575 Cyanide of copper ...... 577 Peculiarities ...
Page 181
... medals , by the clichée process . metals should be repeatedly melted and poured into drops until they are well mixed . 1 bismuth , and 2 tin , make an alloy found to be the most suitable for rose - engine and eccentric - turned patterns ...
... medals , by the clichée process . metals should be repeatedly melted and poured into drops until they are well mixed . 1 bismuth , and 2 tin , make an alloy found to be the most suitable for rose - engine and eccentric - turned patterns ...
Page 182
... medals are called bronze . The further addition of tin leads to bell metal , and speculum metal , which are named after their respective uses ; and when the proportion of copper is exceedingly small the alloy constitutes one kind of ...
... medals are called bronze . The further addition of tin leads to bell metal , and speculum metal , which are named after their respective uses ; and when the proportion of copper is exceedingly small the alloy constitutes one kind of ...
Page 187
... medals , or 8 to 15 per cent . tin , with the addition of 2 parts in each 100 of zine , to improve the color . The modern so - called bronze medals of our Mint are of pure copper , and are afterwards bronzed superficially . 11⁄2 oz ...
... medals , or 8 to 15 per cent . tin , with the addition of 2 parts in each 100 of zine , to improve the color . The modern so - called bronze medals of our Mint are of pure copper , and are afterwards bronzed superficially . 11⁄2 oz ...
Page 316
... medals are entirely due to that of the dies from which they are struck , the chasing process being as it were a minute subdivision of the action of the die itself . THE PRINCIPLES AND PRACTICE OF FLATTENING THIN PLATES OF METALS WITH ...
... medals are entirely due to that of the dies from which they are struck , the chasing process being as it were a minute subdivision of the action of the die itself . THE PRINCIPLES AND PRACTICE OF FLATTENING THIN PLATES OF METALS WITH ...
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Common terms and phrases
acid alloy angle annealing antimony anvil applied battery Bismuth blows bolt brass carbon cast cast-iron centre charcoal chemical coating color cooling copper crucible cutter cyanide of potassium cylinder deposit diameter dissolved drill ductile edge electrotype employed Engineer fire forging furnace fusible gold grooves hammer hardened heat HENRY CAREY holes Idem inch iron lathe lead length less malleable mandrel manner manufacture medal melted metal metallurgy method mode mould nearly nitric acid operation ordinary oxide piece placed plaster of Paris plate platinum portion pound poured practice proportion punch quantity red heat removed rivets rollers round sal-ammoniac sand screw shears sheet side silver slide soft solder solution sometimes specific gravity speculum metal square steel sulphate sulphuric sulphuric acid surface swage temperature thick thin thread tion tool tube vessel welding wheels whilst wire wrought-iron zinc
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Page 685 - Practical Draughtsman's Book of Industrial Design, and Machinist's and Engineer's Drawing Companion: Forming a Complete Course of Mechanical Engineering and Architectural Drawing. From the French of M. Armengaud the elder, Prof, of Design in the Conservatoire of Arts and Industry, Paris, and MM.