Show A braxl A novel machine called a whip hoisting dram has been invented in rhode island tor unloading lumber and other freight from vessels and is found to ba a great improvement on ordinary methods in the saving of time and labor the machine has three drnas which operate two derricks and a central line which runs to the hold of the vessel the power is furnished by an electric motor of ten horse power the capacity of the motor being volts and making 1600 revolutions to the minute A bait connects the motor with the bhart which operates the drums the power being transferred to the drums by what is called a paper friction each drum is operated by a lever and can be stopped in an instant the motor is a belt oiling machine a drop of oil falling on the bearings every thirty seconds when the lumber is drawn from the vessel a large book from the wharf derrick is attached and the sticks are transferred in the moat ready manner to any part of the yard new york sun |