Chiseling apparatus

Chiseling apparatus for use in a chimney comprising,

• an elongated positioning rod having a handle end and a free end, said rod having an axis,
• said free end being connected to a cylindrical housing coaxially aligned with the axis of the free end of said positioning rod,
• an air driven piston and cylinder combination being mechanically mounted within said housing,
• said piston being configured to reciprocate within said cylinder in response to air under pressure delivered to said cylinder,
• said cylinder including an air inlet opening located within said housing and a piston rod opening facing away from said free end of said positioning rod,
• a piston rod connected to said piston and extending through said piston rod opening in said cylinder and beyond said housing, a chisel connected to reciprocate with said piston and piston rod, said chisel including a chisel edge for impacting on surfaces within said chimney, said chisel edge being off-set from the axis of said housing,
• an opening through said housing, said housing opening circumscribing an air duct, said duct being connected in fluid communication both with a source of high pressure air and with said air inlet opening in said cylinder, said duct extending along said positioning rod within said chimney,
• said handle end of said positioning rod extending upwardly from said chimney, a valve in said duct intermediate said air source and said cylinder for opening and closing said duct to air flow, said valve being located near said handle end of said positioning rod.