This is a nonplanar mechanism. Imagine the four bar linkage on the surface of a sphere with all the rotary axes intersecting at the center of the sphere. In this model (similar to C1), the linkage can be demounted and each of the four links can be fixed using the pedestal H2. In this way Reuleaux wanted the instructor to demonstrate four inversions of the linkage. The making of the four circular shaped links is a remarkable feat of 19th century machining. Reuleaux called this linkage a 'conic quadic crank chain'. He describes in his book Kinematics of Machinery, 24 variations of conic crank chains. (F. Moon, 2001)
Publisher:
Cornell University Library
Relation:
F. Reuleaux, Kinematics of Machinery, 1876, p. 327, Art. 75.
Reproducton ID:
C3
Copyright:
Jon Reis Photography grants Cornell University Libraries and the Cornell College of Engineering the rights to display copyrighted images of the Reuleux collection of kinetic machines on the Cornell University and National Science Digital Library web sites and for unlimited use in Cornell University Library publications for education purposes only. Rights for all other uses such as editorial, advertising, web use and display by third parties not affiliated with Cornell University are reserved by the photographer.
