Word: glasse
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Dates: during 1930-1939
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...nine-ounce steel ball was dropped on a pane of the same glass from a height of 28 feet. The glass bulged and cracked but did not break. A young woman stood behind another pane while Chief Bender, famed oldtime pitcher, wound up and let fly a baseball at it. The glass stopped the ball...
Thus with great fanfare was launched a new flexible safety glass, billed as the best ever. Five companies cooperated in the research which produced it-Carbide & Carbon Chemicals Corp., E. I. du Pont de Nemours & Co., Monsanto Chemical, Libbey-Owens-Ford, Pittsburgh Plate Glass. Announced cost: $6,000.000. Federal Housing Administrator Stewart McDonald, an old motormaker (Moons) but a notably inexpert motorist, made a speech. A congratulatory telegram arrived from Franklin Roosevelt...
...Safety glass is a double sheet with a transparent filler or binding layer between. In the old glass the filler was cellulose acetate. In the new it is polyvinyl acetal resin, a synthetic plastic made from acetylene. In an automobile this flexible, yielding pane is something like a transparent, moistureproof, windproof curtain. It is expected to cut down the number and seriousness of highway injuries due to sudden stops...
...idea of shatterproof glass was born in 1903 when a French chemist, Edouard Benedictus, knocked a bottle containing dried collodion from a shelf. The bottle cracked but the fragments did not spatter. Benedictus concluded that they were held together by the collodion film. He got a patent in 1914 but the first shatterproof glass did not appear in automobiles until...
Cellulose nitrate was the first binder used; actinic rays in sunshine turned this disagreeably brown. Cellulose acetate as a binder and actinic-filtering glass stopped the discoloration. But the glass was hard and, though it did not fly into lacerating fragments, a human head striking it fared badly. Moreover, it became brittle in cold weather. The new glass is not only soft for safety but keeps its effectiveness at temperatures around zero...