SUPPORT A DEPRESSION A CHAMBRES MULTIPLES, UTILISE POUR LA MISE EN FORME DE FEUILLES DE VERRE, AVEC DES MOYENS D'ISOLEMENT DES CHAMBRES A VIDE VOISINES

Multiple chamber vacuum holders for use in shaping sheets of glass or other heat-softenable material to complex shapes require a different level of vacuum in adjacent vacuum chambers. A porous fiber glass cover used with such vacuum holders provide passages for residual air in adjacent passages to t...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	ROBERT GEORGE FRANK ET JOHN JOSEPH EWING
Format:	Patent
Sprache:	fre
Schlagworte:	CHEMISTRY CONVEYING GLASS HANDLING THIN OR FILAMENTARY MATERIAL MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL PACKING PERFORMING OPERATIONS PNEUMATIC TUBE CONVEYORS SHOP CONVEYOR SYSTEMS STORING TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING TRANSPORTING
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