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 70
cranks. 34. Diagrammatic representation of screw-gearto operate three worm-wheels in the same direc-tion, for chucks, &c. The method of working isobvious. 36. A mutilated screw for eliding into a nuthaving corresponding parts of the thread cutaway, to be fixed by a pari ial turn. It is used… … ) ( ) U 38. A method of doubling the length of strokeof a piston-rod or the throw of a crank A pinionrevolving on a spindle attached to the connecting-rod is in gear with the fixed lower rack and alsowith the upper rack, which is carried by a guidc-rod above and i» free to move backward andforward.…
Inventions
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