George R. Chatburn, Highways and Highway Transportation
“ The Amos log loader is described as an efficient loading machine in which a friction drive takes power directly from the drive shaft of the motor truck and by means of a worm gear transmits it to a long winding shaft, or small diameter drum, which extends the length of the truck bed, being mounted parallel to it just under the bed. Loading chains are attached to this drum either at the ends or middle as the driver wishes. The movement is regulated by means of a lever just over the truck step. ”
