Smoothing Sidewalks by Machine 



AN outfit for roughing stone side- 

 /A walks has been perfected and 

 placed on the market by an 

 Illinois company. It consists of an air- 

 cooled air-compressor dri\en by a gas- 

 oline engine mounted on a light steel 

 truck. The com- 

 pressor is a \er- 

 tical, air-cooled, 

 oil-splash lubri- 

 cated machine 

 connected to the 

 engine by a coup- 

 ling. The com- 

 pressor valves are 



The Tool Is Fitted with a Case-Hardened 

 Steel Block with Sharpened Raised Points 



of thin flexible sheet-steel and cannot be 

 drawn into the cylinder. 



The tool is an ordinary plug drill fitted 

 with a case-hardened steel block with 

 sharpened raised points which do the 

 work. In chipping around cracks and 

 posts set into the sidewalk a trimming 

 tool is used. An unloading device 

 furnished with the compressor keeps the 

 air at the correct pressure for the most 

 efficient work. The block has a wire 

 handle which helps to guide the tool. 



The entire outfit is operated by one 

 man and the work is done expeditiously 

 and thoroughly. The truck is made 

 somewhat on the order of a boy's 

 express wagon except for the fact 

 that it is of steel. The machine is 

 equally adapted to use on stone or 

 cement walls or interiors whercN'er 

 roughing is required, the pressure being 

 uniform whatever the position or angle. 



The Outfit Consists of an Air-Compressor Driven by a Gasoline Engine. In Chipping 

 Around Cracks and Posts or Openingi Set in the Sidewalk a Trimming Tool Is Used 



42G 



