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
In the rush and hurry of modern life, we are inclined to go back to the
days of barbarism, when real home life was unknown. Instead of all
members of the family gathering about the breakfast table when the meal
is ready, they come straggling in one by one. This made it very
difficult for the housewife to serve the breakfast hot, and particularly
the toast, which is a favorite dish of our breakfast table. The
necessary steps back and forth from the breakfast room to the kitchen to
prepare hot, crunchy toast made this portion of breakfast-getting a not
agreeable feature. The thought, taken up by electrical engineers,
brought out an electric toaster, rectangular in shape, with handsome
frame, nickel supports and wire heating element. This was indeed very
efficient and could be used also as a small stove. This type of toaster
was followed a little later by an upright toaster (Fig. 8). The heating
element is of the radiant type, made of flat resistance wire wound on
mica and placed in a vertical position between the two bread racks. When
the current is switched on, the heating element becomes red and the
bread is inserted under the gravity-operated bread clamps on each side.
The bread clamp is simply raised at the edge of the slice of bread, and
holds the bread firmly in place. This appliance toasts bread evenly,
rapidly, and costs very little to operate. The flat top can be used for
keeping a plate warm for the toast.
[Illustration: FIG. 8.--ELECTRIC UPRIGHT TOASTER]
Electric Coffee Percolator.
Lovers of good coffee want it served hot, but boiling spoils coffee. The
modern electric percolator, which can be operated on the dining table,
has solved coffee-making problems. The particular style of percolator
shown in Fig. 9 has no valves or floats or traps that continually get
out of order and that make the cleaning of a percolator so disagreeable.
This valveless percolator is very easily cleaned and requires no brush.
The heating element of this type percolator is in the bottom of the pot
in the center of the water space, and is of the immersion type,
protruding up from the center of the bottom of the pot. The heating
element is made of flat ribbon resistance wire wound on mica, then bent
into the form of a cylinder to fit into the German silver shell. A
screw-operated spreader in the center presses the heating element
tightly against the entire surface of the shell and insures rapid
conduction of the heat from the element to the water. A study of the
illustration showing the inside of the percolator (Fig. 10) will make
clear to you the method of operation. With this style of electric
percolator, percolation begins within thirty seconds after the water has
been placed in the pot and the current turned on, and delicious coffee,
clear as amber, is ready to pour in ten minutes.
[Illustration: FIG. 9.--ELECTRIC NICKEL VALVELESS PERCOLATOR]
Public-domain text, read in full here on John Shaqi.
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