Benjamin, Charles Henry, 1856- [from old catalog], Hoffman, James David, 1868- [from old catalog] joint author · New York, H. Holt and company · leaf 140
, g are intended to hold the oil in place;oiling is sometimes effected by small rolls recessed into the lowerpiece and held against the platen by springs. The principal advantage of this form of way is its ability tohold oil and the great disadvantage, its faculty for catching chipsand dirt. Fig.…
Machine design
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