Commercial bookbinding; a description of the processes and the various machines used (1910)
Stephen, Geo. A. (George Arthur), 1880-1934 · London, W.J. Stonhill and co. · leaf 35
of the sections)the machines sew with double thread, andwhen sewing all along as many threadsare used as there are to be stitches in eachsection. An examination of a machine-sewn book will show that each length ofthread in a given section is independent ofthe adjacent length, and that the… … Fig. 44. it is possible to feed sections of differenlthicknesses, without any adjustment onthe part of the operator, anil to ensure pro-per tension on the thread. when lour threads are used. In hand-sew-ing one continuous thread is used, as shownin diagram A ol Fig. 43. the threadgoing vertically…
Bookbinding
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