Adjustable guide slippers for matchplate molding machine

A matchplate molding machine having a box-like molding flask of generally rectangular cross-section and having guide and support rails located adjacent the corners of the flask, means for mounting said flask for sliding along said rails, said means comprising a pair of slippers located adjacent each of the eight corners of the flask with the slippers of each pair being located on opposite sides of the respective rail, there being a mounting shaft associated with each slipper and secured to said flask adjacent the corner thereof, said machine being characterized in that each of said slippers comprises a mounting block pivotally secured to the respective shaft, a pad having a flat bearing surface contacting said rail, and a pair of independently adjustable fasteners extending between said mounting block and said pad and securing said pad to said mounting block, said fasteners being adjustable in one direction to force said pad away from said mounting block and to press said bearing surface into contact with said rail, said fasteners being adjustable in the other direction to release said pad from said mounting block, the clearance between said mounting block and said rail being sufficiently great to enable said pad to be slipped from between said mounting block and said rail when said fasteners are released and without disturbing the position of said mounting block relative to said shaft and said flask.

A matchplate molding machine having a vertically movable drag flask platen of generally rectangular shape and having vertically extending guide rails located adjacent the four corners of the platen, means for mounting said platen for up and down movement on said rails, said means comprising a slipper located adjacent each of the four corners of the platen and on one side of the respective rail, a mounting shaft projecting from each corner of the platen and secured rigidly to the platen, said machine being characterized in that each of said slippers comprises a mounting block pivotally secured to the respective shaft, a pad having a flat bearing surface engageable with said rail, and a pair of independently adjustable fasteners extending between said mounting block and said pad and securing said pad to said mounting block, said fasteners being adjustable in one direction to force said pad away from said mounting block and to press said bearing surface into face-to-face contact with said rail, said fasteners being adjustable in the other direction to release said pad from said mounting block, the clearance between said mounting block and said rail being sufficiently great to enable said pad to be slipped from between said mounting block and said rail when said fasteners are released and without disturbing the position of said mounting block relative to said platen and said shaft.