Ross - I don't know if your Norgetag has a filter in it or not, but you shouldn't worry about clogging the drain. MANY washers have been expelling lint down the drain for many decades, either like yours is now, or in a self-cleaned filter 'blob' all at once in the initial drain. Unless the drain is prone to clogs or already compromised, I don't think this is an issue.
As to the Admiralpool and recent top loaders, I am unaware of any that come equipped with filters now. WP seems to have eliminated them from their DD machines several years ago, the last used being those disks on the bottom of the baskets. Before someone goes lamenting about the disk filters, they did work, just not as efficiently as some other self cleaning designs. They were definitely the most cost effective to plumb for in the machine (none) and manufacture.
Maybe its just me, but I don't think clothes today make as much lint as they did some years back. It is either that or good detergent isn't causing as much? Neither of my dryers seem to get as much it the screens, and I don't see as much coming out of the washers either. I can leave the filter in my 1979 Kenmore 500 machine, with the manual bed of nails filter, for as many as five or six loads before it needs to be cleaned. Of course it depends what I'm washing, but that would never have happened when I was a kid.
Gordon