Smith later confirmed the incident, saying it happened just after a standard mid-final change of hand piece.
A sheep kicked the hand piece clear, the tooth on the comb broke and the shearer held the sheep while switching back to the original hand piece and shearing out the sheep before also changing the clogged cutter.
Smith shore the 20 sheep in 16min 28sec, with Kirkpatrick next in 16min 55sec, closing the gap to 0.55pts with the better quality points.
Smith said it was the first time he'd had a broken comb in more than 20 years of
competition shearing.
With the show's sheep dog trials held midweek, and won by stalwart trialist Sheena Martin and Stretch, the shearing was one of three major attractions for the show, equestrian events and the rodeo, which each had near record entries.
Despite the absence of the major amusement rides now bypassing many smaller shows, there was plenty of interest in other entertainment and competitions, and gate takings were also at near record levels, despite a low-cost $5 entry fee on Friday and the dropping of Saturday adult entry from $15 to $10, said A and P society president Ian Denton.