The jag parking brake uses a cable that has the outer sheath pressed against the first brake lever with the inner cable then passing through the first brake lever and attached to the second lever.
When the handbrake/parking brake lever is pulled the inner cable pulls the second lever inwards towards the pinion diff housing/ propshaft. The outer cable sheaf, acting under the tension caused by the shortening of the inner cable, simultaneously pushes the first brake lever inwards also towards the propshaft/pinion housing.
The outer cable sheath is fixed at the handbrake lever.
The handbrake on these cars was only ever "for show" as they never really worked properly. I would have to be a pretty dire "emergency" for me to consider using it to actually stop the car......
Cheers,
Tony
