Popular science monthly . Reverse the opera glasses andwalk on the line if you can (171 Popular Science Monthly. There are no exposed levers or flywheelsand the motor is enclosed in a casing A Tiny Portable Hoisting Engine ofDual Power ADliMIMTIVK Init powerful hoist-ing engine that handles loads of onethousantl ixunids or less o\er distances ofsc\eral hundretl feet has been de-signed recent!>. It is ojicrateteither by steam or by com-pressed air. This little iioist, saidto be the smallest prac-tical one of its kind,has the additional fea-ture of safety, ha\ingno exposed levers orflxAvheels
Popular science monthly . Reverse the opera glasses andwalk on the line if you can (171 Popular Science Monthly. There are no exposed levers or flywheelsand the motor is enclosed in a casing A Tiny Portable Hoisting Engine ofDual Power ADliMIMTIVK Init powerful hoist-ing engine that handles loads of onethousantl ixunids or less o\er distances ofsc\eral hundretl feet has been de-signed recent!>. It is ojicrateteither by steam or by com-pressed air. This little iioist, saidto be the smallest prac-tical one of its kind,has the additional fea-ture of safety, ha\ingno exposed levers orflxAvheels. 11 is design-ed for rough ser\ice,particularK- for use inmines and is portable, and canbe mounted almostanywhere— clampedto a pipe (jr cokinni orbolted to the wall. Both for safet\- andmotor is contained inbrake is a band-l\pe operated by a worm—a screw with a long pilch—to constrictit, so as to give greater holding power. Why the Rain Follows the Thunderand Lightning WHY does a hea\y downpour ofrain often follow a clap oftiiunder? Xot, as is popularly be-lie\ed, because the thunder jos
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
