A parking brake cable control assembly (Figure 2) has a cable run 10 extending from a parking brake lever to an adjuster yoke 13. The yoke 13 includes a housing 14 carrying, on rods 37, a bracket 38 connected to a core 11b of a subsequent cable run to one rear brake. An axially movable inner member 15 extends co-axially of the housing 14 and is crimped on to a conduit 10a of the cable run 10. A core of the cable run 10 passes through the inner member 15 and continues as a core 12b to the other rear brake. Collet members 18 biassed by a circumferential spring 22 are positioned in the housing 14 and are formed with 90 DEG triangular profile serrations 19, co-acting with serrations 17 on the inner member 15. A helical spring 23 acting between an abutment 24 on the conduit 10a and an end cap 26 seating on the housing 14 acts to induce tension in the cable run. Engagement of part frusto-conical faces on the collet members 18 with a frusto conical face on the housing 14 acts to urge the collet members into locking engagement with the inner member 15. Should the tension in the cores fall below a pre-determined value, the spring 23 acts through the end cap 26 to urge the collet members 18 out of engagement with the inner member 15 and thereby enable the inner member to ratchet axially out of the housing 14 until tension in the cores is restored. An axially movably release tube with a frusto-conical head co-acts with part frusto-conical faces on the collet members 18 and is actuable to displace the collet members 18 radially outwardly to permit compression of the spring 23 by urging the conduit 10a toward the housing 14. A clip 33 serves to hold the inner member 15 in the compressed positon during connection of the assembly on to an automobile and is released to place the assembly in service.
