Patent Working Drawings

Abstract

ALL who are engaged in the teaching of kinematics and of applied mechanics must often have it brought forcibly before them the difficulty that exists in making even comparatively simple mechanical motions intelligible to students by means of ordinary drawings and diagrams, while the more complex motions and combinations can hardly be treated of at all profitably without the aid of working models, which are very expensive, and take up a great deal of space. Again, inventors and the proprietors of patented mechanical inventions, are often at a loss to explain to unscientific or uninitiated persons the advantages of their systems, and costly working models have to be resorted to in order to avoid the mystification which ordinary mechanical drawings often produce in the minds of those not accustomed to them, or who are not versed in the principles of mechanics.

Patent Working Drawings.

By H. Batchelor T. C. Batchelor (London: Macmillan and Co.)