Worm gearing . Frontspiece. A Fifteenth Century Worm Gear from an Etching by Albrecht Diirer, WORM GEAHING BYHUGH KERR THOMAS M. 1. MECH. M. A. B. M. E., M. Z. A. E. Second EditionRevised and Enlarged McGRAW-HILL BOOK COMPANY, WEST 39TH STREET. NEW YORK LONDON: HILL PUBLISHING CO., Ltd. d & 8 BOUVERIE ST., B. C. 1916 5 COPYKIGHT, 1913, 1916, BY THe McGraw-Hill Book Company, Inc. THK MAPI,li: PHESS Y O H K PA PREFACE TO SECOND EDITION A second edition of this book having been called for, theopportunity is afforded for making corrections of a fewtypographical errors, which appeared i
Worm gearing . Frontspiece. A Fifteenth Century Worm Gear from an Etching by Albrecht Diirer, WORM GEAHING BYHUGH KERR THOMAS M. 1. MECH. M. A. B. M. E., M. Z. A. E. Second EditionRevised and Enlarged McGRAW-HILL BOOK COMPANY, WEST 39TH STREET. NEW YORK LONDON: HILL PUBLISHING CO., Ltd. d & 8 BOUVERIE ST., B. C. 1916 5 COPYKIGHT, 1913, 1916, BY THe McGraw-Hill Book Company, Inc. THK MAPI,li: PHESS Y O H K PA PREFACE TO SECOND EDITION A second edition of this book having been called for, theopportunity is afforded for making corrections of a fewtypographical errors, which appeared in the first of Chapter IX has been rewritten, and three shortappendices added to bring the text abreast of the writersmost recent investigations. It is hoped that the value ofthe book is thereby considerably enhanced. H. K. T. PREFACE TO FIRST EDITION In the following work an attempt has been made, it isbelieved for the first time, to deal exhaustively with a httleunderstood branch of applied mcu31924004653261
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