Multiple pistons swaging tool

Apparatus for swaging a ferrule onto the periphery of a cylindrical member comprising:

• a first piston mounted for reciprocation within a body;
• an anvil member cooperatively associated for movement with said first piston;
• a cylindrical recess in said anvil member for receiving the end of a cylindrical member and said anvil member including a camming mouth;
• a means carried by said body for connection thereto of a means for (a) aligning the cylindrical member with said recess and (b) limiting an axial movement of a ferrule received over the end of the cylindrical member and a coupling nut received over the ferrule wherein said means for aligning said cylindrical member and limiting axial movement of the ferrule and the coupling nut comprises a retaining cap slidably disposed in a T-shaped slot which is provided on said body;
• and,
• a pressure means connected in fluid communication with the interior of said body for driving said first piston toward the ferrule, said pressure means comprising a second piston.

Apparatus for pre-swaging to the outer surface of a cylindrical member the ferrules of fittings of the type including a threaded coupling nut having an internal opening and adapted to encircle the cylindrical member and an associated ferrule positioned on the cylindrical member, said apparatus comprising:

• a first means for engaging and positioning the end of a cylindrical member on which the fitting is connected;
• a camming means associated with said first means and sized to extend inwardly from the end of said member between the outer periphery of the member and the internal opening of the coupling nut;
• a second means for engaging said coupling nut, said second means comprising a retaining cap that is slidably disposed in a T-shaped slot such that the cap selectively encloses said coupling nut;
• and,
• a power means for producing a relative movement toward one another of said camming means and the coupling nut to cause a ferrule positioned therebetween to be swaged on the outer surface of said cylindrical member, said power means comprising:
• a first piston, and
• a second piston spaced from said first piston.

A swaging tool for swaging a ferrule onto an outer periphery of a cylindrical member, the tool comprising:

• a swaging anvil for swaging the ferrule onto the outer periphery of the cylindrical member;
• a frame for supporting and aligning said swaging anvil with the cylindrical member, wherein said swaging anvil can selectively move with respect to said frame;
• and,
• independently actuated signal means operably secured to one of said frame and said swaging anvil for indicating adequate swaging of the ferrule in response to a gauged relative movement between said frame and said swaging anvil, said signal means including:
• an articulated signal member comprising:
• a first arm,
• a second arm which is secured to one end of said first arm and is selectively pivotable thereabout,
• a means for urging said second arm to one end position in relation to said first arm,
• a latching means for securing said signal member in one end position, and
• a means for biasing said signal member to swing away from said one end position upon adequate swaging of said ferrule.

A device for swaging a ferrule onto the periphery of a cylindrical member comprising:

• a first piston mounted for reciprocation within a body;
• an anvil member drivingly connected to said first piston and having a recess in one end to receive an end of the cylindrical member;
• a camming means associated with said anvil member for camming a ferrule carried on the end of the cylindrical member into tight peripheral engagement therewith;
• a second piston mounted for reciprocation within said body in spaced relation to said first piston, wherein a movement of said second piston is necessary in order to move said first piston;
• and,
• a mechanical resilient means for urging said first and second pistons away from each other, said mechanical resilient means being located between said first and second pistons.