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1971
Present day Glass
“A process whereby plate glass of higher high quality is built by floating it around a tub of molten tin is fast changing the traditional plate-glass process in the U.S. The float process, formulated in England about 10 yrs in the past by the glass-generating firm Pilkington Bros. and introduced into the U.S. by PPC Industries, does away with the mechanical grinding and polishing functions that will have to be performed in the conventional system. It is hence a substantially more affordable procedure. In the float method the glass as it leaves the melting furnace flows horizontally into the float bathtub, which is an rectangular tank much more than 100 feet very long and broad more than enough to carry a ribbon of glass of the widest conventional commercial dimension. The ribbon floats on molten tin, which has a beautifully flat floor.”
1921
Going the Masses
“In the Grand Central Terminal, in the coronary heart of New York City, a little something like 6 hundred passenger trains are dealt with every day. These trains ought to be assigned to the suitable tracks in the terminal with all the switching and signaling that these kinds of functions entail. And if the prolonged obsolete observe of making use of stand switches with unique switchmen ended up nonetheless in vogue, it would involve numerous hundred males continually on obligation to operate these stands. The current process of working the switches and crossovers and alerts from a central position, acknowledged as an interlocking station, has enabled all these operations around an in depth location to be controlled by a compact quantity of men headed by a ‘director,’ as shown in our illustration.”
1871
Earth: Reliable or Molten?
“Although the doctrine that the earth is a molten sphere, surrounded by a skinny crust of strong make a difference, was once practically universally taught by geologists, there have of late many years been brought forward numerous arguments to the contrary, which, seemingly, are much more in favor of its becoming a good, or practically good mass throughout. For instance, no matter if it is feasible for these types of a skinny crust to keep on being good, and not at the moment to grow to be melted up and absorbed into the a great deal increased mass of molten make a difference beneath it? In reality, it is obvious that no crust could even start to variety on the surface, unless the sphere by itself was at the moment basically giving off a lot more warmth to the surrounding ambiance than it could source from its far more central sections.”
Operating Like a Doggy
“French nails, suggests the Mechanics’ Journal, are made at Charleville, partly in massive factories by equipment, partly in a multitude of smaller factories, or rather atéliers, scattered about the densely populated villages. These villages, and particularly one of them, Neufmanil, are not only inhabited by men and women, but by an ouvrier [working] course of canines. The labor of these puppies, whose hours are as precisely controlled as those people of their human fellow laborers, is made up in furnishing motive ability to the bellows, which fan the furnaces of the atéliers. They get inside of a wheel and transform it, just like squirrels in a cage.”
Heard It by way of the Grapevine
“The drying of grapes, for creating raisins, is turning out to be a large sector in California, the really saccharated juice of the American grapes peculiarly fitting them for the goal.”
