The carpenter's new guide: being a complete book of lines for carpentry and joinery. Treating fully on practical geometry, soffits, brick and plaster groins ... with a great variety of designs for roofs, trussed girders ... with many other things entirely new: the whole founded on true geometrical principles; the theory and practice well explained and fully exemplified on eighty-four copper-plates; including some observations and calculations on the strength of timber (1830)
Nicholson, Peter, 1765-1844 · Philadelphia, J. Grigg · leaf 72
in small rectan-gles : a curve being traced through the diagonals of each recte^ngle, will give a mould toset the jack ribs. How to fix the Jack Ribs. Bend your mould G from a, to the crown at e, in fig. .>^j that will give the edges ofyour boards; then fix a temporary piece of wood, level upon… … Mtu Pl^le 18.
Carpentry
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
