He drew simple diagrams, three of which, taken from Dalton's New System of Chemical Philosophy, part ii.
These relations are exhibited by the two following diagrams.
The geometrical diagrams were particularly vexing because I could not see the relation of the different parts to one another, even on the cushion.
Examples, completely worked out, of velocity and acceleration diagrams for the slider crank chain, the four-bar chain, and the mechanism of the Joy valve gear will be found in ch.
When the link forms part of a mechanism the respective accelerations of two points in the link can be determined by means of the velocity and acceleration diagrams described in 82, it being understood that the motion of one link in the mechanism is prescribed, for instance, in the steam-engines mechanism that the crank shall revolve uniformly.
