An apparatus for face-side machining of a profile element forming a negative mold for the branch of a channel in a shaft floor

Abstract From the Canadian patent

An apparatus is described for machining a face side of a profile element forming a , negative mold for a branch channel interlockingly connectable to a profile strand of a , main channel comprising a table (3) for receiving the profile element (1) and with , support (5) which is movable along a predetermined planar path for a curved heating , wire (4). The support (5) is movable along the axial progress of the profile strand. , The heating wire (4) has a progress corresponding to the contour of the profile strand , for the main channel. The support (5) is rotatable within the terms of a permanent , perpendicular orientation of the heating wire plane relative to the path.