A bi-directional advance gear (10) having a torque limiting radial friction clutch is disclosed. The friction clutch comprises an annualr member (26) having an inner and outer periphery and having gear teeth (24) defined by its outer periphery and radially inwardly projecting teeth (56) on its inner periphery. A flat web (32) substantially closes one face of the annular member to provide a shallow recess (34) bounded by the projecting teeth and defines an opening (36) concentric to the annular member. An inner member having a hub portion (4) is rotatably mounted in the opening and has a pinion gear (28) at one end. The other end of the hub has a plurality of radially extending rosette-shaped springs (58) contained in the recess. Each spring has a pair of radially extending leg portions joined by an arcuate portions (66) Each arcuate portion has a lobe (68) biased into engagement with the inwardly projecting teeth.