Electro-plating, with numerous engravings and diagrams
Electro-plating, with numerous engravings and diagrams by Paul Hasluck (what a great last name!) was originally published in 1905! If you’re into this kind of thing…electro-plating…then this will be a fascinating find and read for you.
Here’s a small excerpt to get us all excited about electro-plating.
First, the preface:
“This Handbook contains, in a form convenient for everyday use, a comprehensive digest of the
information on Electro-plating, scattered over more than twenty thousand columns of Work— one of the weekly journals it is my fortune to edit — and supplies concise information on the details of the subjects on which it treats.
In preparing for publication in book form the mass of relevant matter contained in the volumes of Work,
much had to be arranged anew. However, it may be mentioned that a number of articles by Mr. G. E.
Bonney have been incorporated in the text. Readers who may desire additional information
respecting special details of the matters dealt with in this Handbook, or instructions on kindred subjects, should address a question to Work, so that it may be answered in the columns of that journal.
P. N. HASLUCK.
La Belle Sauvage, London. 1905.
Here’s a bit from the inside of the book:
A Leclanche cell is charged by three-parts filling the outer jar with a strong solution of ordinary sal-ammoniac ; if the jar is more than
three-parts filled, the salts of the solution will creep up. In a few hours the cell will be ready for use. Should it not be convenient to wait,
pour through the little glass tubes in the seal some of the solution into the porous pot, and the cell will be in working order in a minute or so.
The chemical action that goes on during the working of the cell is this : The zinc, sal-ammoniac, and peroxide of manganese are changed into zinc chloride, water, and ammonia ; and the oxide of manganese is reduced to an oxide less rich in oxygen. Where a good, full current is wanted for short periods at intervals — such as for electric-bell work — a cell of this type is suitable ; it is of no use where continuous currents are needed — as in electro-plating — as it polarises quickly, recovering itself, however, equally rapidly. It has another advantage action does not go on inside the cell unless the circuit is closed and the cell is doing work ; therefore it can stand for months always ready charged without any fear of the zincs being eaten away ; moreover, it is not affected by changes of temperature, and it does not give off noxious fumes. The e.m.f. of the
Leclanche cell is 160 volts.
With regard to wet batteries in general, cells holding from 1 to 10 gallons each, and elements of a corresponding size, become a necessity when
large articles have to be plated, or when a great number of articles has to be plated at the same time. This necessity may be partly met by
employing a great number of small cells coupled in multiple arc, but small cells thus coupled up soon run down, because, being placed on short circuit, their charges of acid are soon used up. The best work is generally obtained when the elements of the battery present a slightly larger surface to the liquids within the battery than that of the anodes to the solution in the vat.”
If you made it this far you must be interested in electro-plating!