Glamorgan 's David Lloyd produced a first - class best of 64 not out at Northampton .
Rory Kleinveldt 's fifth five - wicket haul of the season put the hosts on top on a second rain - interrupted day .
Glamorgan 's David Lloyd produced a first - class best of 64 not out at Northampton but Rory Kleinveldt 's fifth five - wicket haul of the season put the hosts on top on a second rain - interrupted day .