The Wonder Book of Knowledge: The Marvels of Modern Industry and Invention, the Interesting Stories of Common Things, the Mysterious Processes of Nature Simply Explained
History
The Wonder Book of Knowledge: The Marvels of Modern Industry and Invention, the Interesting Stories of Common Things, the Mysterious Processes of Nature Simply Explained
Industrial arts -- History
The Evolution of a Spoon.
From the crude blank of nickel silver to the finished spoon, there are
over thirty distinct operations necessary, a few of the more important
stages being illustrated. When the spoon emerges from the plating
solution (see No. 8), it is perfectly white and looks as if it had been
treated with a heavy coat of enamel. It is then scratch-brushed,
burnished and, in some patterns, the handle is greyed. After this, the
spoon is buffed and finished.
Every operation is performed with the utmost care, and not until the
piece is actually finished can this vigilance be relaxed, as it is the
final processes that make the plating of pure silver an actual part of
the spoon and insure its wearing qualities.
_Striking and Bowling._--The pattern is then stamped on the handle and
the bowl is shaped.
_Trimming, etc._--After the pattern and the bowl have been struck, there
is usually a small burr left where the metal has oozed out between the
dies. This is removed by trimming. The trademark is then stamped on the
back of the handle.
_Polishing._--The goods are put through various operations of polishing
until they are brought to a high finish.
_Plating._--The articles to be plated are suspended in a frame in the
silver solution. This frame is connected with the negative pole of a
magneto-electro machine, while the silver is suspended in the solution
from bars and connected with the positive or opposite pole of the
machine, thereby forming a circuit for the electricity through the
solution.
[Illustration: 1. The blank. 2. Squeezed. 3. Blank rolled. 4. Spoon cut
from blank. 5. Design struck. 6. Bowl raised. 7. Trade-mark stamped. 8.
After plating. 9. The finished spoon.]
A patent automatic scale, designed to weigh the silver while depositing,
is balanced to the exact weight of silver to be deposited on the
article. The circuit is completed by turning a switch and the plating
begins.
As soon as the articles receive the proper weight of silver, the scale
beam rises, thus making a separate connection with the electro-magnet,
which springs the switch, breaking the electric current and stopping the
plating at the same instant, also ringing an alarm bell to notify the
workman that the articles have received the proper weight of silver.
_Quality._--Standard silver-plated spoons are made in two grades of
plate--triple and quintuple. The former, however, is the one generally
used and answers all ordinary requirements. The quintuple grade is
designed more particularly for hotels, restaurants, clubs and other
institutions where the wear is especially severe.
The Evolution of a Knife.
There are thirty-six stages in the evolution of a plain steel knife. At
one end of the journey we see the cylindrical bar of steel, black and
unlovely; at the other, the silver-plated knife, light, well-balanced
and heavily plated with pure silver. In the case of other than plain
knives, the work involves also the stamping of the pattern.
Public-domain text, read in full here on John Shaqi.
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