How to succeed as an inventor; showing the wonderful possibilites in the field of invention; the dangers to be avoided; the inventions needed; how to perfect and develop new ideas to the money making stage (1909)
Smith, Goodwin Brooke, 1870- [from old catalog] · Philadelphia, Inventors and investors corporation · leaf 69
19. Transmission of two speeds by means of belt**The two outer pulleys on the lower shaft are loose,the two inner fast. With the belts arranged a*shown, the speed of the lower shaft is slower ihtjfewhen both are traversed to the right. 68 How to Succeed as an Inventor
Inventions
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