The Pictorial handbook of London : comprising its antiquities, architecture, arts, manufacture, trade, social, literary, and scientific institutions, exhibitions, and galleries of art : together with some account of the principal suburbs and most attractive localities ; illustrated with two hundred and five engravings on wood, by Branston, Jewitt, and others and a new and complete map, engraved by Lowry . hown infigure 8, to allowmore room for thebricklayers in put-ting in the brick-work. The lower partof the bottom boxwas secured by awrought-iron stay orframing, f and g, andthe upper part of
The Pictorial handbook of London : comprising its antiquities, architecture, arts, manufacture, trade, social, literary, and scientific institutions, exhibitions, and galleries of art : together with some account of the principal suburbs and most attractive localities ; illustrated with two hundred and five engravings on wood, by Branston, Jewitt, and others and a new and complete map, engraved by Lowry . hown infigure 8, to allowmore room for thebricklayers in put-ting in the brick-work. The lower partof the bottom boxwas secured by awrought-iron stay orframing, f and g, andthe upper part of thetop box by two similarframings of wroughtiron, h and i. Eachframe was supportedupon two long jack-screws, k k, which,from the duty theyhad to perform, weretermed legs; the lowerextremities of thesejacks rested uponstrong wrought-ironplates l l, termedshoes, whose objectwas to distribute theweight of the frames,together with thepressure of the su-perincumbent earth,over a larger surfaceor base ; beneaththese shoes a flooringof elm planks, 3 thickness, was laid,upon which the brick-work of the tunnelwas built, after theground beneath themhad been compressedby the weight of theshield passing over them. The leg was attached to the shoe by a species ofankle-joint e, resembling in principle the method adopted for mountingmariners compasses, which allowed the shoe to adjust itself readily to any. 838 LONDON.
Size: 1046px × 2389px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, bookidpictorialhan, bookyear1854
