Feeding wood chipping

A chopping apparatus comprising:

• a rotatable wheel or disk carrying a plurality of cutters;
• a pair of traction rollers for engaging a log and feeding the same at an oblique angle towards a cutter disk for obtaining a chopping and chipping of the log;
• a pair of motors respectively for operating said rollers in a forward and in reverse mode;
• control means for operating said motors respectively in the forward and reverse mode whereby the reverse mode is alternatingly interspersed in between sequential forward motion cycles to bridge a period of time in between sequential engagements of the log by the cutters;
• said control means including a feed-braking unit provided for the forward mode, the feed braking unit being connected when energized to operate said motors in the forward mode;
• and
• speed drop responsive means and manual means connected for deenergizing the feed braking unit thereby triggering a timing means, said timing means being connected and operating for causing the motors to run in the reverse for a specified period of time inherent in the timing means.