It was the beginning of these automatics, you've seen these photos on the, on the television where these welders come down and they go in like this, well these was  the beginning of that sort of thing because it was worked  with a motor and a cam which er er the cam went round and it'd lift the arm up and when it was went past the, the knuckle it'd drop down  and the speed you   them out or the speed you sent them out  how fast the arm would go up and down, and that was stitch welding.