Variable reduction ratio winch for hardening boat rope is driven by primary lever driven by secondary lever rotating around spindle and supporting roller running in groove in secondary lever

摘要

The winch (T) is driven by a primary lever (1) driven by a secondary lever (6) rotating around a spindle (7) with a fixed position (8) and supporting a roller (11) located at the end (5) of the primary lever. The secondary lever comprises a groove (12) inside which the roller runs. The specific shape (10) of the groove enables the support force of the secondary lever on the roller to be always exerted perpendicularly to the primary lever. This enables a variable amplification of the torque exerted on the winch spindle (3) independently of the angle formed by the levers. The roller remains captive in the groove enabling a reversible movement in order to harden the rope by successive actions on the secondary lever by means of the crank (14).