Neutralising action of locking control handle - employs rotating elements requiring alignment with coded position to establish control action

摘要

The action of a locking or adjusting control is neutralised without disconnection. This is performed by including a number of rotating elements which must be in a particular coded position before the action is re-established. A control cam (1) and a handle (2) are attached by a flexible segment (10) which supports a spring (11) which acts against a support (12) for the handle rivetted to the cam. Two protrusions (8) on the handle engage with openings (9) in the cam shoulder. A tubular collar (7) located between shoulders of the handle and cam has rotating elements (3, 4, 5, 6) able to rotate freely on it. These elements have grooves in which discs (13, 14, 15, 16) are positioned carrying index marks for setting up a code.