The Practical Metal-workers' Assistant: ...: With the Application of the Art of Electro-metallurgy to Manufacturing Processes: ... |
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Page 17
... applied to gold and silver in ages when the principles of chemical science were un- . known , has nevertheless a positive chemical significance . Modern discovery has added platinum to the list ; and they all agree in the property of ...
... applied to gold and silver in ages when the principles of chemical science were un- . known , has nevertheless a positive chemical significance . Modern discovery has added platinum to the list ; and they all agree in the property of ...
Page 25
... applied it could not have been used at all . Contemplate the prices of cast- iron which constitute the blocks of which Southwark Bridge is built , and imagine the circumference of blocks having the same form , weight , and dimensions ...
... applied it could not have been used at all . Contemplate the prices of cast- iron which constitute the blocks of which Southwark Bridge is built , and imagine the circumference of blocks having the same form , weight , and dimensions ...
Page 29
... applied are found in the condition of native alloy - i . e . one naturally existing or an alloy results as the consequence of an intermediate metallurgic process . The native state of gold with silver , and of platinum with rhodium ...
... applied are found in the condition of native alloy - i . e . one naturally existing or an alloy results as the consequence of an intermediate metallurgic process . The native state of gold with silver , and of platinum with rhodium ...
Page 33
... applied in the assay- ing process , by leading it into a glass tube which contains the ore specimen in a proper form already heated . A gentle current of gas is passed over the ore until no more is burned by it , which is manifested by ...
... applied in the assay- ing process , by leading it into a glass tube which contains the ore specimen in a proper form already heated . A gentle current of gas is passed over the ore until no more is burned by it , which is manifested by ...
Page 40
... applied metallurgy . We have thus limited the metallurgist to the agency of fire ; and we have assumed , as is most usual , that the object of furnace- heat shall be to reduce the material to the condition of fluidity . We might ...
... applied metallurgy . We have thus limited the metallurgist to the agency of fire ; and we have assumed , as is most usual , that the object of furnace- heat shall be to reduce the material to the condition of fluidity . We might ...
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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
Popular passages
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.