Shot blasting machinery

A slot blasting machine comprising a blast cabinet having first and second opposed walls defining a width joined by third and fourth opposed walls defining a length which define a blasting space for receiving a workpiece to be blasted and, in adjacent and communicating relationship with the blasting space, a space for enclosing an abrasive throwing wheel for use in blasting a workpiece with in the blasting space with abrasive, the blasting cabinet including the blasting space and the wheel space having substantially constant cross-sectional dimension along the length and width of the blast cabinet, said wheel space defining the width of the cabinet to be only slightly larger than the width of the abrasive throwing wheel, the third and fourth opposed walls defining passage means through which a workpiece can be fed into and out of the blasting space, the abrasive throwing wheel disposed within the wheel space between said first and second walls comprising a single backplate disposed adjacent said first wall and having integral throwing blades surrounding an integral central vaned impellor, a driving motor mounted externally of said first wall and coupled directly to the backplate of the abrasive throwing wheel through said first wall to rotate the abrasive throwing wheel, a control cage fixedly mounting externally of said second wall which defines an opening through which the control cage projects to surround the vaned impellor of the rotatable abrasive throwing wheel, and abrasive feed delivery means also mounted externally of said second wall and communicating through said opening with the control cage inwardly of said second wall to deliver abrasive thereto and consequently to the vaned impellor of the rotatable abrasive throwing wheel.

A shot blasting machine comprising;

• a blast cabinet having first and second opposed walls defining a width joined by third and fourth opposed walls defining a width which define a blasting space for receiving a workpiece to be blasted and, in adjacent and communicating relationship with the blasting space, a space for enclosing an abrasive throwing wheel for use in blasting a workpiece within the blasting space with abrasive, the blasting cabinet including the blasting space and the wheel space having substantially constant cross-sectional dimension along the length and width of the blast cabinet, said wheel space defining the width of the cabinet to be only slightly larger than the width of the abrasive throwing wheel, a rotating table having an axis of rotation within the space and serving to support and move a workpiece within the blasting space, an openable casing fixed to said first and second walls to enclose the rotating table during a blasting operation, the abrasive throwing wheel disposed within the blasting space between said first and second walls comprising a single backplate disposed adjacent said first wall and having integral throwing blades surrounding an integral central vaned impellor, a driving motor mounted externally of said first wall and coupled directly to the backplate of the abrasive throwing wheel through said first wall to rotate the abrasive throwing wheel, a control cage fixedly mounted externally of said second wall which defines an opening through which the control cage projects to surround the vaned impellor of the rotatable abrasive throwing wheel, and abrasive feed delivery means also mounted externally of said second wall and communicating through said opening with the control cage inwardly of said second wall to deliver abrasive thereto and consequently to the vaned impellor of the rotatable abrasive throwing wheel.