GB325547A - Self-sealing doors for coke ovens - Google Patents

Abstract

325,547. Jackson, L. Mellersh-, (coppers Co.). Nov. 21, 1928. Coke ovens.-A coke oven door automatically locked in position or unlocked, during its positioning or removal by a door extracting mechanism, is so arranged that it may be placed in position secured to the battery structure, and the seal adjusted and latched by a simple movement of the door extracting mechanism, the lifting movement of this mechanism being sufficient to release the sealing means prior to removal of the door. The door itself comprises a lining 26 enclosed in a frame 24 having a peripheral flange 27 which engages with a shoulder 64 on the wall casting 63. The door has two pairs of pivotally mounted arms 28 which engage angle bars 29 on the brickstays 15 and carry sealing means comprising an asbestos rope 33 mounted on channel irons 34 connected across the door by bridging members 35, 38 each mounted on a guide pin 37. Bars 40, to actuate the bridging members 35, are suspended by pivotally mounted arms 41 connected to a cross bar 42 and have annular members 43 surrounding a flange 44 of the member 35. The bars 40 are rigidly connected by plates 48. Latching mechanism comprises a vertically movable member 49 actuated by a spring 50 to engage the corresponding plate 48, Fig. 10, and is contained in a casting 52 secured to the frame 24 by bolts 53. A levelling door 56 closes by gravity and is retained by a latch 58. To place a door in position the arms 21 of the door extracting apparatus engage the latching mechanism, Fig. 10, and the arms 28 are raised so as to be out of alignment with the angle irons 29. The apparatus is then moved towards the opening into which the door is placed with the flange 27 against the shoulder 64. The arms 21 are now lowered so that the arms 28 engage the angle irons. The apparatus is then advanced, arms 21 pushing against the plates 48 compressing springs 45 and forcing the frame 34 and the rope 33 into the wedge-shaped recess round the door. The latches 49 will be pushed down by the spring 50 in front of the plates 48 and retain the sealing mechanism in place. The door extracting apparatus may now be moved back. To prevent damage to the sealing means or the spring controlling it, a shoulder on each of the plates 48 engages a shoulder on the door frame when the sealing means is pushed far enough home. To remove a door the operations above described take place in the reverse order.