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XXVIII.—A New Graphic Analysis of the Kinematics of Mechanisms

Published online by Cambridge University Press:  06 July 2012

Robert H. Smith
Robert H. Smith
Affiliation:
Mason College, Birmingham.
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Extract

A mechanism may be defined as a combination of plates, bars, or flexible members jointed together, so that, while the parts may move relatively to each other, the relative positions of all the different parts are determinate for each given possible relative position of any two parts.

It follows immediately that the simultaneous relative displacements, velocities, and accelerations of velocity of all parts are also strictly determinate.

This determination, by accurate graphic means, forms the subject of this paper. In it those mechanisms alone are considered that are composed of rigid members, the motions of whose parts are all continually parallel to one plane, the constancy of the plane being defined relatively to one of the members of the mechanism itself.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 32 , Issue 3 , February 1886 , pp. 507 - 517
Copyright
Copyright © Royal Society of Edinburgh 1886

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References

page 509 note * In an abstract of this paper written for the engineering journals, the late Professor Fleeming Jenkin very expressively called abcd the “image” of ABCD. In the acceleration diagram another “image” a′b′c′d′ appears.

page 511 note * The acceleration “image” of a bar moving without rotation reduces to a point. The velocity “image” of a bar moving without rotation reduces to a point.