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Show New Type of Power Shovel. It hns long been recognized that, to meet certain conditions, a gasoline-driven gasoline-driven power shovel would have advantages ad-vantages over machines using other forms of power. Many attempts have been made, patterned mostly after the steam shovel, to adapt gasoline power to this type of machine, but all of them have been open to criticism. Now, however, a new type of gasoline power shovel, described in iVpular Mechnnlcs, has been placed oil the market which Is a radical depart ore from the accepted designs. In this machine, which has successfully passed Its preliminary trials, nil power pow-er is supplied from one slow-speed gasoline engine, and there are no motors, mo-tors, engines or clutches on the boom. The dipper can be put through any motions possible with the steam shovel, shov-el, even to the shaking of the dipper to free it of sticky material. The boom may be raised or lowered in the usual manner, while the swing Is controlled con-trolled by a separate clutch. The shovel Is mounted on tractor treads and Is sHf-propelled. |