Galvanoplastic Manipulations: A Practical Guide for the Gold and Silver Electroplater and the Galvanoplastic Operator ... Based Largely on the "Manipulations Hydroplastiques" of Alfred Roseleur |
From inside the book
Results 1-5 of 90
Page 27
... proportion of copper predomi- nates , is the same . It comprises six operations : - 1. Cleansing by fire or by alkalies . 2. Dipping . 3. Dipping in old aqua fortis . 4. Dipping in fresh aqua fortis . 5. Dipping in mixed acids for a ...
... proportion of copper predomi- nates , is the same . It comprises six operations : - 1. Cleansing by fire or by alkalies . 2. Dipping . 3. Dipping in old aqua fortis . 4. Dipping in fresh aqua fortis . 5. Dipping in mixed acids for a ...
Page 29
... proportion of acid must be used . The articles cleansed by alkalies must be washed before being plunged into the dipping bath , or pickle , as it is sometimes called ; and we cannot insist too much on the necessity of thoroughly and ...
... proportion of acid must be used . The articles cleansed by alkalies must be washed before being plunged into the dipping bath , or pickle , as it is sometimes called ; and we cannot insist too much on the necessity of thoroughly and ...
Page 33
... in the above bath acts as a reducing agent . The carbon and hydrogen which it contains deoxidize a small proportion of the nitric acid , transforming it into nitrous acid , which , uniting with the chlorine of 3 CLEANSING . 33.
... in the above bath acts as a reducing agent . The carbon and hydrogen which it contains deoxidize a small proportion of the nitric acid , transforming it into nitrous acid , which , uniting with the chlorine of 3 CLEANSING . 33.
Page 38
... proportions are also added . In this manner a perpetual and cheap whitening bath is prepared . Some operators heat this ... proportion of nitric acid is double that of sulphuric acid . The copper articles may remain from five to twenty ...
... proportions are also added . In this manner a perpetual and cheap whitening bath is prepared . Some operators heat this ... proportion of nitric acid is double that of sulphuric acid . The copper articles may remain from five to twenty ...
Page 40
... proportion of mercury salt above indicated will be modified with the size of the pieces and the nature of the alloy . For instance , less mercury will be needed for light pieces of jewelry which need a very thin deposit . On the other ...
... proportion of mercury salt above indicated will be modified with the size of the pieces and the nature of the alloy . For instance , less mercury will be needed for light pieces of jewelry which need a very thin deposit . On the other ...
Contents
361 | |
375 | |
383 | |
391 | |
398 | |
412 | |
423 | |
429 | |
75 | |
77 | |
81 | |
90 | |
97 | |
103 | |
109 | |
114 | |
123 | |
130 | |
135 | |
140 | |
150 | |
155 | |
162 | |
168 | |
174 | |
180 | |
184 | |
200 | |
218 | |
226 | |
236 | |
237 | |
243 | |
244 | |
251 | |
259 | |
265 | |
267 | |
270 | |
274 | |
280 | |
287 | |
293 | |
295 | |
298 | |
301 | |
307 | |
315 | |
323 | |
326 | |
329 | |
335 | |
341 | |
348 | |
350 | |
353 | |
433 | |
439 | |
440 | |
446 | |
447 | |
453 | |
455 | |
459 | |
460 | |
466 | |
472 | |
478 | |
479 | |
484 | |
488 | |
490 | |
497 | |
503 | |
509 | |
519 | |
530 | |
539 | |
546 | |
552 | |
558 | |
564 | |
570 | |
571 | |
577 | |
583 | |
589 | |
595 | |
601 | |
607 | |
612 | |
616 | |
618 | |
622 | |
625 | |
626 | |
633 | |
640 | |
642 | |
645 | |
650 | |
654 | |
Common terms and phrases
added adherent alkaline alloys amalgam ammonia ammonium anode aqua fortis aqua regia battery become bisulphite boiling bright bronze brush burnished carbonate cast-iron CHAPTER chloride of gold cleansed coating cold color common salt copper or brass cream of tartar cyanide of potassium dead lustre described diluted dipping dissolved distilled water electric current electro electro-deposits electro-gilding Electro-Metallurgy employed filtered fire-gilding formula galvanic galvanoplastic gilders gilding bath glass gutta percha heat hydrochloric acid iron liquid mercury metal method mixture mould nickel nitrate nitrate of silver nitric acid objects obtained operation ormolu ounces oxide pieces plate platinum porcelain powder precipitate preferable prepared proportion pure pyrophosphate quantity rapidly removed require rinsed Roseleur sal-ammoniac scratch-brushed shade silvering bath simple immersion small articles soda sodium solution steel stirring stoneware sufficient sulphate of copper sulphuric acid surface thickness thin tion varnish vessel washed wire zinc
Popular passages
Page 643 - Encyclopaedia of Chemistry, Practical and Theoretical : Embracing its application to the Arts, Metallurgy, Mineralogy, Geology, Medicine and Pharmacy. By JAMES C. BOOTH, Melter and Refiner in the United States Mint, Professor of Applied Chemistry in the Franklin Institute, etc., assisted by CAMPBELL MORFIT, author of " Chemical Manipulations,
Page 640 - 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. Armengaud the younger, and Amoroux, Civil Engineers.
Page 639 - MECHANICS- WORKSHOP: A treatise containing plain and concise directions for the manipulation of Wood and Metals, including Casting, Forging, Brazing, Soldering and Carpentry. By the author of the
Page 655 - THE PRACTICAL BRASS AND IRON FOUNDER'S •" GUIDE. A Concise Treatise on Brass Founding, Moulding, the Metals and their Alloys, etc.; to which are added Recent Improvements in the Manufacture of Iron, Steel by the Bessemer Process, etc.
Page 641 - Long-Span Railway Bridges, comprising Investigations of the Comparative Theoretical and Practical Advantages of the various adopted or proposed Type Systems of Construction, with numerous Formulae and Tables giving the weight of Iron or Steel required in Bridges from 300 feet to the limiting Spans ; to which are added similar Investigations and Tables relating to Short-span Railway Bridges.
Page 656 - Underground Pumping Machinery. MINE DRAINAGE ; being a Complete and Practical Treatise on Direct-Acting Underground Steam Pumping Machinery, with a Description of a large number of the best known Engines, their General Utility and the Special Sphere of their Action, the Mode of their Application, and their merits compared with other forms of Pumping Machinery. By STEPHEN MICHELL.
Page 657 - FORMULAE for finding the Discharge of Water from Orifices, Notches, Weirs, Pipes, and Rivers. With New Formulae, Tables, and General Information on Rain-fall, Catchment-Basins, Drainage, Sewerage, Water Supply for Towns and Mill Power. By JOHN NEVILLE, Civil Engineer, MRIA Third Edition, carefully revised, with considerable Additions.
Page 641 - BAYLES.— House Drainage and Water Service : In Cities, Villages and Rural Neighborhoods. With Incidental Con. sideration of Certain Causes Affecting the Healthfulness of Dwellings. By JAMES C. BAYLES, Editor of " The Iron Age " and
Page 658 - Chemical Analysis. THE COMMERCIAL HANDBOOK of CHEMICAL ANALYSIS ; or Practical Instructions for the determination of the Intrinsic or Commercial Value of Substances used in Manufactures, in Trades, and in the Arts. By A. NORMANDY, Author of " Practical Introduction to Rose's Chemistry," and Editor of Rose's " Treatise on Chemical Analysis.
Page 5 - Question, and on Internal Improvements, principally delivered in the House of Representatives of the United States. By ANDREW STEWART, late MC from Pennsylvania. With a Portrait, and a Biographical Sketch.