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What Color Chip Are You?
Poker paraphernalia at last have at
tained the dignity of office appliances.
A Michigan manager, desirous of hav­
ing a graphic illustration of conditions
in bis office constantly before him, has
placed a card table at his elbow on whi( h
the floor plan is drawn. In position to
correspond with the desks of his subor­
dinates, he places poker chips upon the
table, each inscribed with a name. His
department managers are represented
by blue chips, the lesser executives by
reds, and the underlings by white
chips, When an employe is absent
for a day, his chip is lifted.
SCIENCE, MECHANICS, INVENTION 685
ROUGHING CONCRETE WALKS
A new outfit tor roughing concrete sidewalks has been tried out with success in Illinois, where it is operated with far
greater speed and economy than former hand tools. The machine makes use of a small air compressor, driven by a gas
engine and air cooled. The compressor is mounted on a truck with steel wheels and is so small and light that it can be
wheeled about by one man, and is convenient for a job that requires occasional shifting of the apparatus. Connected
with this by an air hose, is a small pneumatic drill carrying a case-hardened steel block with sixteen sharpened, raised
points. One man can handle the tool and attend to the engine and compressor, and he can do in an hour the amount of
work that would require a day for six men with the ordinary tools employed for roughing