. When the upper cross-bar of the bicycle frame, so that the rider may readily set in action either the pump on the mer. The road is first covered with a layer of coarse tar- front wheel or that on the rear wheel, or both, as de- mac to a depth of about 24% inches in thickness, though sired. The… … traffic. A final thin layer of slag dust AN AUTOMATIC BICYCLE PUMP. ened to the spokes just above the pump is then carefully spread over the sur- cylinder is an inclined metal plate face, completely filling any minute interstices in the side walls of the hood, and thus pass on over the trig- which,…
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