Wilson’s Carpentry and joinery / by John Wilson (1891)
Wilson, John · Manchester [England] : Percy Bros. · leaf 32
is a fraction above the springing line, so that the centre may beeasily got out when the wedges are slackened. For centres to ordinary brick arches, the wedges ihould be slackened assoon as the arch is finished, and then it allows the bricks in the arches to findtheir bearings. The arch should not… … The doors in this book are of the very commonest description, and infact it is only by a stretch of courtesy that the first receives the name. Fig. 1. Consists of two different parts, the vertical boards known asbattens, and the horizontal pieces known as backs or ledges. The boards aresometimes…
Carpentry · Joinery
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
