The mechanic's tool book. With practical rules and suggestions for use of machinists, iron-workers and others (1868)
Harrison, William B · New York, D. Van Nostrand · leaf 166
ces this cut mustbe centrally drilled at the cutting end for the re- RULE AND HINGE JOINTS. 161 ception of a guide-pin which is to be inserted inthe hole, a, previously drilled (see Fig. 36), andought to nicely fill it, and it must be long enoughso that it can be inserted before the mill beginsto… … Fig. 36. The forming of the round, c, is the most difficultpart of the operation, and in large establishmentswhere many of these joints are made, as in bullet-molds in the gun-factories, it is usually done attwo cuts, each cut embracing one-half of the circle,and these cuts are made by means of the…
Machine-shop practice · Tools
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