| 主权项 |
1. A furnace for shaping glass sheets for aircraft transparencies, the furnace comprising:
a preheat and cooling furnace defined as a first furnace, the first furnace comprising:
a first sidewall, an opposite second sidewall, a top wall, an opposite bottom wall, a first opening and an opposite second opening;a door for covering the first opening of the first furnace;a first plurality of spaced stub conveyor rolls mounted on the first sidewall and a second plurality of spaced stub conveyor rolls mounted on the second sidewall, wherein each of the first and second plurality of stub rolls has a conveying end and an opposite drive end with the conveying end of the first and the second plurality of stub rolls within the first furnace and the drive end of the first and the second plurality of stub rolls extending out through its respective one of the first and second sidewalls of the first furnace, wherein the conveying end of the first and second plurality of stub rolls defines a first path through the first furnace, the first path extending from a position spaced from the first opening of the first furnace to the second opening of the first furnace, and the drive end of the first and the second plurality of stub rolls powered by a drive system;a first heating system associated with the first furnace to heat and controllably cool the interior of the first furnace; a shaping furnace defined as a second furnace, the second furnace comprising:
a first sidewall, an opposite second sidewall, a top wall, an opposite bottom wall, an opening and a rear wall opposite to the opening of the second furnace, wherein the second opening of the first furnace and the opening of the second furnace are connected to one another;a third plurality of spaced stub conveyor rolls mounted on the first sidewall of the second furnace and a fourth plurality of spaced stub conveyor rolls mounted on the second sidewall of the second furnace, wherein each of the third and fourth plurality of stub rolls has a conveying end and an opposite drive end with the conveying end of the third and the fourth plurality of stub rolls within the second furnace and the drive end of the third and the fourth plurality of stub rolls extending out through its respective one of the first and second sidewalls of the second furnace, wherein the conveying end of the third and the fourth plurality of stub rolls defines a second path through the second furnace, the second path extending from the first path to the rear wall of the second furnace, and the drive end of the third and the fourth plurality of stub rolls powered by the drive system;a second heating system within the second furnace, wherein the second heating system comprises a gyrotron system to heat selected portions of the glass sheet; a U-shaped moveable conveyor comprising;
a first leg, an opposite second leg and a third leg joining ends of the first and the second legs to give the conveyor the U-shape, wherein the moveable conveyor has a top side and an opposite bottom side, the bottom side of the conveyor having wheels;a fifth plurality of stub rolls having a conveying end and an opposite mounting end with the mounting end of the fifth plurality of stub rolls rotatably mounted on the top side of the first leg of the U-shaped conveyor with the conveying end of the fifth plurality of stub rolls between the first and second legs of the moveable conveyor, and a sixth plurality of stub rolls a conveying end and an opposite mounting end with the mounting end of the sixth plurality of stub rolls rotatably mounted on the top side of the second leg of the U-shaped conveyor with the conveying end of the sixth plurality of stub rolls between the first and second legs of the moveable conveyor;wherein the moveable conveyor is sized for end of moveable conveyor having the third leg defined as the first end of the moveable conveyor to move into and out of the first opening of the first furnace such that with the first end of the moveable conveyor in the first opening of the first furnace the conveying end of the fifth plurality of stub rolls is aligned with the conveying end of the first plurality of stub rolls, and the conveying end of the sixth plurality of stub rolls is aligned with the conveying end of the second plurality of stub rolls to extend the first path from the first and second plurality of stub rolls to the first opening of the first furnace; a carriage having an extended first arm and an opposite extended second arm, wherein the extended first arm is supported on the conveying end of the first and the fifth plurality of stub rolls, and the extended second arm is supported on the conveying end of the second and the sixth plurality of stub rolls; wherein with the first end of the moveable conveyor in the first opening of the first furnace the carriage is moved along the fifth and sixth plurality of stub rolls of the moveable conveyor into the first opening of the first furnace and thereafter onto the first and second plurality of stub rolls by activating the drive system to rotate the drive end of the first and the second plurality of stub rolls in a first direction to move the carriage along the path away from the first opening of the first furnace toward the second furnace and with the first end of the moveable conveyor in the first opening of the first furnace, the carriage is moved along the first and second plurality of stub rolls toward the first opening of the first furnace and a from the second furnace, and thereafter onto the fifth and sixth plurality of stub rolls by activating the drive system to rotate the drive end of the first and the second plurality of stub rolls in a second direction opposite to the first direction to move the carriage along the first path toward the first opening of the first furnace and away from the second furnace. |
