engine or truck, or other carriage, and diverging in opposite directions, and the pi- against the frame in the usual way. One side will always close by their own weight, being vot is at the eye ofthe spirals, the edges have of the frame is firm, the other side has a re- kept so by a loose collar… … are made to work in guide slots in the rods, to be light and yet carry a considerable quan- a hollow shaft which plays up and down on the springs, D D. The usual strip is set at the and pull upon them in the direct line of their tity of water. The powder is introduced driving shaft, as desired ;…
