Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 314
Fig. 4. SUPPORTING HINGESwhich hold top of door to wall Fig. 5. CENTER HINGESwhich join the two sections of the door, andallow lower section thereof to lap in under tophalf when door is opened Fig. 6. GUIDE WHEELS AND SHOESAffixed to lower corners of lower half of door.When door is opened and…
Building materials
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