MINE-ILLUMINATION DEVICE

A device for illuminating a tunnel of an underground mine being worked by an excavating machine comprises a lamp housing with a light-transmissive vaulted cover snap-fitted thereto and with a fluorescent tube horizontally disposed inside that cover, the housing being suspended by a resilient mountin...

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Bibliographische Detailangaben
1. Verfasser:	HAMACHER MARTIN
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING EARTH DRILLING FIXED CONSTRUCTIONS FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF GALLERIES HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO USESOR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS LARGE UNDERGROUND CHAMBERS LIGHTING MECHANICAL ENGINEERING MINING NON-PORTABLE LIGHTING DEVICES SHAFTS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF TUNNELS VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	A device for illuminating a tunnel of an underground mine being worked by an excavating machine comprises a lamp housing with a light-transmissive vaulted cover snap-fitted thereto and with a fluorescent tube horizontally disposed inside that cover, the housing being suspended by a resilient mounting from a horizontal flange of a wall member of the machine shielding it from the mine face. The cover penetrates the flange and raises the tube to a level at which its light radiates upward as well as horizontally toward and away from the mine face; a flared peripheral zone of the cover enables the housing to be repressed against the spring force of its mounting by an object passing across the flange so that the top of the housing lies flush with the flange surface.