Free took control of New Home at some point, and quickly after that all machines mfg under the "New Home" name were the same as Free, and very different than the older style New Home machines. They take different shuttles, needles and attachments too. Free made machines have a much wider throat plate and take the same shuttle as Singer.
As to what the top tension for Free machines looks like, Free didn't actually make any top tension machines - except those under the New Royal design. That one is a totally different machine, looks nothing like the other Free (or New Home ) and takes different attachments needles and shuttle. Looks way more like a Davis machine except the belt is toward the machine side of the flywheel. Davis has the belt on the outside of the flywheel.