Perfections in chuckles. (Machine-translation by Google Translate, not legally binding)

摘要

Perfections in chuck chucks, characterized in that they include a body part in which there are jaws slidably mounted in respective guides; a conical gear element, associated with a nut rotatably mounted on the body portion and having a threaded engagement with the jaws, said bevel gear being capable of receiving the teeth of a chuck key having an end pilot able to be received in holes formed radially in the body part, and mounting means arranged elsewhere to connect the chuck to a tool driving spindle, means being provided to produce a self-centering action between the body part and said other part when you are drilling. (Machine-translation by Google Translate, not legally binding)