Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 151
146 JOINTS, AND JOINING TIMBERS. JOINT, PATENT EXPANSION. Figs. 2432 and 2433 represent a patent expausion-iomt, patentedby Z. R. DoNHAM, of New York, March 20, 1847. … JOINTS, AND JOmHSTG TIMBERS. As timber cannot always be obtained of sufficient lengthfor tie-beams, or bridges, it is necessary to unite two or more pieces together by their ends, which iscalled scarfing, and is differently performed by carpenters. The most common means is lapping, orhalving, or,…
Mechanical engineering · Mechanics · Engineering
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