作者: Nathaniel Howard Lieb , Joseph Alexander Lieb
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摘要: A vacuum forming apparatus to allow a tray containing sheet, be molded into prescribed shape, moved manually in very rapid manner rearward diagonal upward direction from horizontally positioned table that is at one level horizontal engagement with heating element higher level, When this latter position the retained by magnet until sheet heated moldable condition. The then withdrawn without harm an operator's fingers while being rapidly forward downward away tables In formed shape. To accomplish movement of parallel linkages are employed each pivotally connected rear central portion end and post its other end.