High vacuum tight rotary valve

Claim 1

A HIGH-VACUUM-TIGHT VALVE FOR AN AUTOMATIC MACHINE THAT PRODUCES ELECTRIC LAMPS NY FORMING AND EVACUATING AND GAS FILLING THE LAMPS, COMPRISING A STATIONARY PLATE HAVING A PLURLAITY OF APERTURES THEREIN, A ROTATABLE PLATE HAVING A PLURALITY OF CONDUITS AND COMMUNICATING CHAMBERS THEREIN, A SEALING VALVE BETWEEN THE STATIONARY PLATE AND THE ROTATABLE PLATE INCLUDING A GROOVE-SHAPED ANNULAR TRACK IN SAID STATIONARY PLATE, TWO ANNULAR PACKING RINGS RECEIVED IN THE GROOVE-SPAPED ANNULAR TRACK WITHOUT RADIAL CLEARANCE, ONE SAID RING BEING AGAINST THE BOTTOM OF SAID TRACK AND BEING MADE OF SOFT RUBBER OR THE LIKE AND THE OTHER SAID RING BEING DISPOSED TOWARD THE OUTSIDE OF TH TRACK AND BEING AT LEAST SEMI-RIGID AND HAVING ANTI-FRICTION AND SELF-LUBRICATING PROPERTIES, A PLURALITY OF SMALL RIGID PIPES IN SAID APERTURES OF SAID STATIONARY PLATE, SAID PIPES FORCING SAID RINGS PERIPHERALLY TIGHT IN THE TRACK AND KEEPING THEM STATIONARY, SAID PIPES EXTENDING INTO THE TRACK AND PASSING PERPENDICULARLY THROUGH THE TWO PACKING RINGS, SAID PIPES AND THE WALLS OF THE TRACK SERVING TO KEEP SAID RINGS IN PLACE AND TO PREVENT RADIAL EXPANSION OF THE RINGS DURING HEAVY PRESSURE APPLIED BETWEEN SAID PLATES AND INSURING A GAS-TIGHT SEAL BETWEEN SAID STATIONARY PLATE AND SAID CONDUITS AND SAID CHAMBERS OF SAID ROTATABLE PLATE.