Apparatus for winding armatures of electric machines

For use in apparatus for winding the armature of an electric machine, said armature having a slotted core and commutator mounted on a common shaft, said commutator having commutator bars and risers provided with slots, respectively,

• apparatus comprising a supporting frame, means on said frame for supporting an armature in winding position, lead-connecting mechanism carried by said frame adjacent to said supporting means in juxtaposition to the commutator for locating two coil leads in two riser slots, respectively,
• said lead-connecting mechanism including a coil lead guide device having two lead-aligning sections laterally spaced a distance corresponding to the spacing between two adjacent slots in the commutator riser, said lead-aligning sections being disposed radially opposite said riser with said sections in alignment with two adjacent riser slots, means for locating the two end leads of a coil wound on said core in said lead-aligning sections, respectively, two lead-inserting devices for independent selective movement into and out of said two riser slots for inserting said coil leads into said slots, respectively,
• a framework on said frame which carries said locating means,
• said locating means including a hook element carried by said framework for reciprocation in a direction parallel to the axis of said armature between first and second positions, said first position being between said lead-aligning sections, said hook element in its first position having opposite sides which define with said lead-aligning sections two lead-guiding channels in radial alignment with two adjacent riser slots, and said second position being spaced from said first position and adjacent to the armature core.

For use in apparatus for winding the armature of an electric machine, said armature having a slotted core and commutator mounted on a common shaft, said commutator having commutator bars and risers provided with slots, respectively,

• apparatus comprising a supporting frame, means on said frame for supporting an armature in winding position, lead-connecting mechanism carried by said frame adjacent to said supporting means in juxtaposition to the commutator for locating two coil leads in two riser slots, respectively,
• said lead-connecting mechanism including a coil lead guide device having two lead-aligning sections laterally spaced a distance corresponding to the spacing between two adjacent slots in the commutator riser, said lead-aligning sections being disposed radially opposite said riser with said sections in alignment with two adjacent riser slots, means for locating the two end leads of a coil wound on said core in said lead-aligning sections, respectively, two elongated flat lead-inserting blades for independent selective movement into and out of said riser slots for inserting said coil leads into said slots,
• said mechanism including a hook element reciprocable between first and second positions, said first position being between said lead-aligning sections and said second position being adjacent to said core, said hook element in its first position having opposite flat sides which define with said lead-aligning sections two lead-guiding channels in radial alignment with two adjacent riser slots, the inner ends of said blades having transverse lead cut-off edges, said hook element having a bight adapted to retain a U-shaped coil lead portion disposed within said two channels, respectively, movement of said blades from outer to inner positions causing said cut-off edges to cut off said leads on opposite sides of said hook element leaving as waste only the bight portion of said U-shaped coil lead portion,
• said cut-off edges moving past said hook element during lead cut off.