Barrows, F. W. (Frank Wilson), b. 1853 · New York, N.W. Henley Pub. Co. · leaf 118
e and the six arms as in Fig. 32, and it isready for the moulder. Each of the arms will have holesdrilled as at h, i, j. After making one or two castings from this, one for asolid pattern, two for a split-pattern, the six arms are tobe cut off to the centre of first hole from the end /, Fig.… … Fig. 32. Thus we may go on cutting off the arms as shown by linesi, j, k, Fig. 29, and making a great many spiders from thisone set of arms.Now, let us illustrate the working. Suppose we wish to 118 PATTERNMAKING. make a set of six-arm patterns, each diameter to have threesizes or grades of arms,…
Patternmaking
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