OCR Text |
Show Rotate With Wheels". I The various switches are mounted so I that they do not rotate with the wheels j I with which they are associated; but il they are placed in a position so that II they wljl bo tjtrown to one or the otn- I er of their closed positions when the ' I tire is punctured or if the air suddenly ' I leaves It. This method of mounting I may be carried out In several different I forms. The one most convenient is I shown In the accompanying lllnstra- I tlon. I'opuhir Science .Monthly, I |