. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. es and by-passes are fully illustrated anddescribed, as are also flange joints and their proper proportions, exhaust heads andseparators. One of the most valuable chapters is that on superheated steam andthe saving of steam by insulation with the various kinds of felt
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. es and by-passes are fully illustrated anddescribed, as are also flange joints and their proper proportions, exhaust heads andseparators. One of the most valuable chapters is that on superheated steam andthe saving of steam by insulation with the various kinds of felting and other mate-rials with comparison tables of the loss of heat in thermal units from naked and feltedsteam pipes. Contains 187 pages. Price $ STEEL STEEL: ITS SELECTION, ANNEALING, HARDENING AND TEMPERING. By E. R. Markham. This work was formerly known as The American Steel Worker, but on the pub-lication of the new, revised edition, the publishers deemed it advisable to change itstitle to a more suitable one. It is the standard work on Hardening, Tempering,and Annealing Steel of all kinds. This book tells how to select, and how to work, temper, harden, and anneal steel foreverything on earth. It doesnt tell how to temper one class of tools and tiien leave 28 JUST PUBLISHED 4th EDITION, REVISED AND ENLARdED STEEL. S T E E L ITS SELECTION, ANNEALING, HARDENINGAND TEMPERING By E. R. MARKHAM 168 Specially Prepared PoaAe Illustrations ^^M ragCS PRICE pHIS work was formally known as TJIE AMERICAN STEEI, WORKER but on the publicatioii-*- of the present edition, the publishers deemed it advisable to change the title to a morecomprehensive one, viz : Steel, Its Selection, Annealing, Hardening and Tempering. This book tells how to select and to know the steel best suited to variouspurposes: gives reasons for the different steels; how to heat in the making ofeverything in the way of toois made from steel; how to proceed In the making oftaps, reamers, flrlllc and milling cu
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