Modern electro plating The principles involved in depositing gold, silver, nickel, copper, brass and other metals, by means of batteries or dynamos; the preparation and management of plating baths, chemicals used, etc . or off in a lathe. It is a mistaken idea thatbrushes must bear hard on commutator. Only pressureenough to preserve good contact is required. The com-mutator, to be in perfect condition, should glaze overand show no appreciable wear. It may be kept so byskillful handling of the dynamo. When the commuta-tor once becomes glazed, it is an indication that thebrushes are in the right
Modern electro plating The principles involved in depositing gold, silver, nickel, copper, brass and other metals, by means of batteries or dynamos; the preparation and management of plating baths, chemicals used, etc . or off in a lathe. It is a mistaken idea thatbrushes must bear hard on commutator. Only pressureenough to preserve good contact is required. The com-mutator, to be in perfect condition, should glaze overand show no appreciable wear. It may be kept so byskillful handling of the dynamo. When the commuta-tor once becomes glazed, it is an indication that thebrushes are in the right position, and it will not requiresandpaper for months; simply use the oil and man should have charge of the dynamo and beheld responsible for it. Connections* The matter of battery connections hasbeen fully covered in the article on primary batteries 34 MODERN ELECTRO PLATING. and the method of connecting the battery and tank forsmall work will be fully understood by reference to , while the importance of the size of wire used forconductors, etc., is fully detailed in the table on page arrangement and size of connections for dynamosin larger shops, using a number of tanks, is, however,. Fig. 10. a very different matter. Here the plan is to use twolarge conducting bars running from the dynamo pastthe various tanks and to take the current from thesebars by means of wires or rods leading to the varioustanks. False economy is often practiced here and, asusual, it leads to trouble. One instance will be sufficientto explain what is meant. An electrotype foundry pur-chased a dynamo when starting in business, and, object-ing to the cost of solid copper bars of the size pre- MODERN ELECTRO PLATING. 35 scribed by the dynamo manufacturer, used large brasstubing instead. Everything went well until businessgrew so much as to completely fill the tank with work,when they found that they could not deposit the copperin the required time. Naturally they thought theynee
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectelectro, bookyear1897
