| 摘要 |
1529458 Doors THOMAS BENNETT Ltd 28 Nov 1975 48962/75 Heading E1J A door assembly comprises panels with guides (22, 24) running in track means (12), the means including a single track 26 branching into two further tracks 28, 30, and a switching device 32 located at the junction of the tracks. The switch is pivoted at 34 and is biassed by spring 42 into one of two alternative positions. During opening of the door a leading guide on a panel is directed by switch arm 38 towards one storage track 30. The guide engages dove-tail arm 40 and deflects the switch into its alternative position. The trailing guide on the panel is then directed by arm 38 into the other storage track 28.
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