September 13, 1889.] 



SCIENCE 



175 



THE BRUSH ELECTRIC HOIST. 



A COMPACT combination of an electric motor with a winding- 

 drum, for hoisting purposes, is shown in the engraving on this 

 page. The motor, which is of the well-l<nown Brush malce, is of 



cess of the Brush Company's electric plant in the ChoUar mine, 

 which was illustrated and described in Science some months ago, 

 has resulted in attracting the attention of the company to the vast 

 field for the use of electric power in mining operations ; and this 

 electric hoist is an attempt to supply the demand that is already 



fifteen horse-power, and is mounted on the same base as the hoist- 

 ing-drum, which is of the Walker pattern. A gear pinion on the 

 armature shaft meshes with the large gear-wheel, which in turn 

 actuates the winding-drum by means of friction pulleys. The suc- 



being made in that direction. This company have contracted to 

 equip the copper mines of the Calumet & Hecla Company at Calu- 

 met, Mich., with five eighty horse-power electric motors and five 

 one hundred and thirty horse- power dynamos. 



