The Bucyrus-Erie “Doubler” electric shovel doubled the dipper capacity of a standard shovel. The 150-B in this video featured a 13-cu.-yd. dipper when equipped with the Doubler. However, the Doubler never surpassed the prototype stage and was not considered a success because of its complicated bucket linkage system and high maintenance requirements.
This video was was compiled, narrated and produced by Keith Haddock for the Historical Construction Equipment Association.
