An improved cable pulling eye including breakaway protection. The cable pulling eye includes a main body having a female end and a second body with a male end which may be inserted together. The bodies are held together by a breakaway pin passing through the male shaft and the walls of the second body. The pin includes spaced annular grooves as weak points where breakage is limited and will occur.

A guide vane protecting device for use in a hydraulic turbine. The device has a braking system having a first and a second braking members by which an initial braking power is imparted to a first control member interposed therebetween. The braking system further has a translational sliding mechanism which permits the translational sliding movement of the first braking member onto the first control member so so to cause a uniform increase of the braking force exerted by the braking members on the first control member, when a weakened pin incorporated in the protecting device is broken by an extraordinary force caused by, for example, jamming of foreign matter between adjacent guide vanes.

A load limited connector that is calibrated to fail at a predetermined approximate tensile load. The connector includes a main body, within which a pin chamber is received, and a secondary body having a shaft that is releasably secured within the pin chamber. At least one breakaway pin, positioned in a pin passageway passing through the pin chamber and into the main body, secures the pin chamber within the main body. When the connector is subjected to tensile loading that exceeds the yielding point of the breakaway pin, failure of the pin occurs resulting in separation of the main body from the secondary body. A pair of torsion pins extend through the pin chamber into the main body to prevent rotation of the pin chamber relative to the main body.