Patent ID: 8714081

Claim:
A safety device for a press comprising: a head for applying force; a single fixed pressure source; a low force pressure driven actuator for said head in communication with said single fixed pressure source, said low force pressure driven actuator comprising an axially moveable low force drive rod connected to said head, and said low force actuator converting pressure supplied by said single fixed pressure source into axial mechanical force applied to said head via said low force drive rod; a high force pressure driven actuator for said head in communication with said single fixed pressure source, said high force pressure driven actuator comprising an axially moveable high force drive rod connected to said head, and said high force actuator converting pressure supplied by said single fixed pressure source into axial mechanical force applied to said head via said high force drive rod; wherein said low force drive rod and said high force drive rod comprise separate elements moveable independently of one another; wherein the operation of said head is limited to only with said low force actuator until said head is in a safe position, and when said head is determined to be in a safe position said high force actuator's use is permitted.