LATHE DESIGN, CONSTRUCTION, AND OPERATION, WITH PRACTICAL EXAMPLES OF LATHE WORK. By Oscar E. Perrigo.

A new revised edition, and the only complete American work on the subject, written by a man who knows not only how work ought to be done, but who also knows how to do it, and how to convey this knowledge to others. It is strictly up-to-date in its descriptions and illustrations. Lathe history and the relations of the lathe to manufacturing are given: also a description of the various devices for feeds and thread cutting mechanisms from early efforts in this direction to the present time. Lathe design is thoroughly discussed, including back gearing, driving cones, thread-cutting gears, and all the essential elements of the modern lathe. The classification of lathes is taken up, giving the essential differences of the several types of lathes including, as is usually understood, engine lathes, bench lathes, speed lathes, forge lathes, gap lathes, pulley lathes, forming lathes, multiple-spindle lathes, rapid-reduction lathes, precision lathes, turret lathes, special lathes, electrically-driven lathes, etc. In addition to the complete exposition on construction and design, much practical matter on lathe installation, care and operation has been incorporated in the enlarged 1915 edition. All kinds of lathe attachments for drilling, milling, etc., are described and complete instructions are given to enable the novice machinist to grasp the art of lathe operation as well as the principles involved in design. A number of difficult machining operations are described at length and illustrated. The new edition has nearly 500 pages and 350 illustrations. Price............$2.50

WHAT IS SAID OF THIS BOOK:

" This is a lathe book from beginning to end. and is just the kind of a book which one delights to consult, - a masterly treatment of the subject in hand." - Engineering News, " This work will be of exceptional interest to anyone who is interested in lathe practice, as one very seldom sees such a complete treatise on a subject as this is on the lathe."- Canadian Machinery.

TURNING AND BORING TAPERS. By Fred H. Colvin.

There are two ways to turn tapers; the right way and one other. This treatise has to do with the right way; it tells you how to start the work properly, how to set the lathe, what tools to use and how to use them, and forty and one other little things that you should know. Fourth edition............25 cents