Frankel Appliance (FR1).

Labial view of the Frankel appliance. The components include: -

Upper -
v Palatal wire 6 / 6 in 0.9mm S.S wire.
v Canine wires 3 / 3 in 0.9mm S.S wire.
v Labial Bow 2 / 2 in 0.9mm S.S wire.


Lower -
v Lip Pads and Joining wires in 0.9mm S.S wire.
v Hanger wires 5 / 5 in 0.9mm S.S wire.
v Lingual Pusher Springs 3 / 3 in 0.7mm S.S wire.

Buccal view of the Frankel appliance.  

Frankel appliance - lingual / palatal view.

Frankel appliance with upper model removed.

Frankel appliance with lower model removed.

Further reading: - Functional Appliances in Orthodontic Treatment (an atlas of clinical and laboratory construction) - Harry. S. Orton.  ISBN - 1-85097-012-2.