Lanterns

Claim 1

IN A LUMINAIRE OF THE TAPE INTENDED TO BE MOUNTED HIGH ABOVE THE GROUND AND TO HAVE ITS LAMP EXCHANGED FROM THE GROUND BY MEANS OF A ROD-MOUNTED TOOL; THE COMBINATION OF: A. AN UPPER STATIONARY HOUSING IN THE FORM OF AN ELONGATED INVERTED TROUGH MOUNTED WITH ITS LONGITUDINAL AXIS AT A SUBSTANTIAL ANGLE FROM THE VERTICAL AND HAVING AN OPENING AT THE BOTTOM THEREOF; B. A LAMP HOLDER ASSEMBLY HAVING A PREDETERMINED CENTER OF GRAVITY AND INCLUDING A. A LAMP SOCKET MOUNTED IN THE ASSEMBLY RECEIVING THE BASE OF AN ELECTRIC LAMP, AND B. A CLOSURE EXTENDING IN OPPOSITE DIRECTIONS BEYOND SAID CENTER OF GRAVITY AND HAVING A PERIPHERY WITH A CONFIGURATION CORRESPONDING TO THAT OF SAID OPENING OF THE HOUSING; C. PIVOT MEANS MOUNTING SAID LAMP HOLDER ASSEMBLY ON SAID HOUSING AND DEFINING A PIVOTING AXIS FOR THE ASSEMBLY, WHICH PIVOTING AXIS EXTENDS TRANSVERSELY WITH RESPECT TO SAID LONGITUDINAL AXIS OF THE HOUSING AND IS DISPOSED INTERMEDIATE THE ENDS OF BOTH SAID HOUSING AND CLOSURE, SAID LAMP HOLDER ASSEMBLY BEING SWINGABLE RELATIVE TO SAID HOUSING ABOUT SAID PIVOTING AXIS BETWEEN A. A SWUNG-UP OPERATIVE POSITION IN WHICH SAID SOCKET AND LAMP ARE DISPOSED IN SAID HOUSING AND ARRANGED SUBSTANTIALLY PARALLEL TO SAID LONGITUDINAL AXIS OF THE LATTER WITH SAID PERIPHERY OF THE CLOSURE ENGAGING SAID HOUSING AROUND SAID OPENING AT THE BOTTOM THEREOF, AND IN WHICH SAID CENTER OF GRAVITY OF THE LAMP HOLDER ASSEMBLY IS LOCATED ABOVE SAID PIVOTING AXIS AND SUBSTANTIALLY CLOSE TO A VERTICAL PLANE PASSING THROUGH SAID PIVOTING AXIS, THEREBY TO AVOID ABRUPT UNINTENTIONAL DOWNWARD SWINGING OF SAID LAMP HOLDER ASSEMBLY FROM SAID OPERATIVE POSITION, AND B. A SWUNG-DOWN, LAMP EXCHANGE POSITION IN WHICH SAID PERIPHERY OF THE CLOSURE LIES SUBSTANTIALLY IN A VERTICAL PLANE AND IN WHICH THE LAMP IS SUSPENDED BELOW THE SOCKET SO AS TO BE EASILY EXCHANGEABLE FROM THE GROUND BY A ROD-MOUNTED TOOL, AND SAID CENTER OF GRAVITY OF THE LAMP HOLDER ASSEMBLY IS SPACED RADIALLY TO ONE SIDE OF SAID PIVOTING AXIS IN ORDER TO STABILIZE THE LAMP HOLDER ASSEMBLY IN SAID LAMP EXCHANGER POSITION; AND D. A TENSION SPRING CONNECTED, AT ITS OPPOSITE ENDS, TO POINTS ON SAID HOUSING AND LAMP HOLDER ASSEMBLY, RESPECTIVELY. A. THE OPERATIVE POSITION OF SAID LAMP HOLDER ASSEMBLY HAVING THE LINE OF FORCE OF SAID SPRING DISPOSED TO SAID ONE SIDE OF SAID PIVOT AXIS, THE LAMP EXCHANGE POSIRION HAVING THE LINE OF FORCE OF SAID SPRING DISPOSED TO THE OPPOSITE SIDE OF THE PIVOT AXIS, AND B. THE DISTANCE BETWEEN SAID POINTS OF CONNECTION OF THE SPRING INCREASING TO INCREASE THE TENSION OF SAID SPRING DURING SWINGING MOVEMENT OF SAID LAMP HOLDER ASSEMBLY FROM SAID OPERATIVE POSITION TO SAID LAMP EXCHANGE POSITION, WHEREBY SAID SPRING NORMALLY YIELDABLY MAINTAINS THE LAMP HOLDER ASSEMBLY IN SAID SWUNG-UP OPERTIVE POSITION AND FURTHER STABILIZES SAID ASSEMBLY IN SAID SWUNG-DOWN LAMP EXCHANGE POSITION WHEN SAID ASSEMBLY IS POSITIVELY DISPLACED TO THE LATTER POSITION.