| 摘要 |
Clamp for key cutting machines, of the type comprising a pair of jaws (6, 10) mounted on a single pin (2) fixed to the machine structure and associated with a knob (22) screwable on a threaded portion of said pin (2) and acting in the sense of causing said jaws to forcedly approach each other, against the elastic reaction of a spring (14) tending to repel them, and to retain a key positioned between them, characterised by comprising a friction type overload clutch (18, 20, 30) interposed between said knob (22) and said pin (2). |
