ause, the pressure in from each other, so that when the ball leaves the bar- producing rotation described below, a catapult form the barrel becomes greater than that necessary to pro- of pitcher does not seem to be at all impossible. rel it is touched in two spots and retarded by the pro- duce this… … but an effective plan, and ble, 'inc. tube may be the one at present adopt- straight or coiled. If coll- ed, is to dispense with ed, a slightly heavier the necessity of signals GUN FOS DELIVERING A CURVED BALL AS USED ON THE PRINCETON BALL GROUNDS. charge is needed. The rea- ) 1897 SCIENTIFIC…
Bicycle · Patents · Scientific American · Munn · Trade mark · Third rail · Motor car · Torpedo boat · Square feet · Narrow gage · Cast Iron · Horse power · Sprocket wheel
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