Show IMPROVED 0 HIGHWAYS sos S o 4 S GATHER UP STONES IN ROAD machine drawn by two horses drags series of Chain iii which pick up obstructions where large and small pebbles pebbled are collected loosely in the gravel of a road they are usually scattered in such ell a way v that it would be an irksome jub job to collect them by hand A now new stone gathering machine Is drown by one or two tw horses bors A series e of chains drugged dra g ed loosely along the roud road sink into the hie small depressions depre and gradually scrape together the pebbles or stones the obstructions fire are then drawn into a pocket WAG chains form a heavy net that sweeps the roads for stones from which they are deposited dePoI ted at intervals in piles at the side of tile the road A pile of a hundred or more stones stone represents the work of only a few minutes when gathered by this machine how much time would 1 it 1 represent expressed in terms of inan energy one hundred stones spread over an area of square feet in a plot 20 feet square places one stone in every tour four square feet A man inan working at average speed could pick up these stones and pile them at the side of the road in 10 or 15 minutes but the machine with its dragging chains will do the work in a moment popular science monthly |