Architectural schematics display technical structural details for secure entryways and windows within a prison cell in England 插畫檔

This technical architectural engraving presents specialized engineering diagrams detailing the precise structural reinforcement and security mechanisms of doors and barred windows configured for individual prison cells located in England. Dating from the early twentieth century, the plate features comprehensive cross-sections, elevation views, and structural profiles illustrating a heavily reinforced wooden door with thick iron framing, rivets, an integrated inspection peephole, and a secure lock assembly. The lower section provides detailed technical drawings of a wide, multi-paned window aperture equipped with protective grilles, mechanical opening levers, and deep masonry recesses, all meticulously rendered at an official administrative scale of 1:25 to document institutional standards of penal security and architectural design during this historical era.