Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 281
Fig. 850.-SectionthroughCentre. 256 CARPENTRY AND JOINERY. together, and fixed with bolts and dog irons,as indicated in the sketches. Fig. 844 showsa centre braced so that it is only necessaryto be supported at each end, leaving a free wedges are used for raising or lowering thecentre slightly, so… … Fig. 852.—Section through Figs. 851 and 854. -Isometric View of Centre at Springing,showing Support Wedges, etc. the centre from the intrados by graduallyslackening the wedges. They also allow ofthe centre being taken down without undue
Carpentry · Joinery
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