Hydraulically actuated apparatus

Claim 1

In a device having a die longitudinally split into segments, a support for the die and a ram for pressing an article to be shaped into a cavity in the die, means for sequentially hydraulically (1) moving the ram towards the die support while simultaneously actuating the die segments to form a die having a cavity therein and (2) pressing the article in the die cavity and shaping it to the configuration of the die cavity, and (3) hydraulically actuated means for lifting the ram from the shaped product while separating the die segments to release the resulting product from the die cavity.

Claim 6

A device comprising a. a frame having a pair of transversely spaced longitudinally extending support members each secured at one end to a top cross-bar and at the opposite end to a die base having a cavity therein adapted to support a die; b. an intermediate cross-bar slidably mounted on said support members and spaced longitudinally between the top cross-bar and base; c. a pair of lift bars, one spaced transversely outwardly from each support member and extending longitudinally alongside it with one end thereof between the two cross-bars; d. a cylinder having a cylindrical housing, a top and bottom disposed between the support members and between the two cross-bars; means for securing said cylinder to said lift bars; longitudinally spaced first and second pistons in said cylinder, a first piston rod attached at one end to said first piston and slidably extending through an opening in the top of the cylinder; said opening being sealed against loss of liquid under pressure; the first piston rod being attached at its other end to the top cross-bar; a second piston rod attached at one end to the second piston and extending outwardly through an opening in the base of the cylinder; said opening being sealed against loss of liquid under pressure; the second piston rod being attached at its opposite end to the upper side of the intermediate cross-bar; e. a pusher assembly affIxed to the underside of the intermediate cross-bar and slidable therewith; said pusher having a cavity in the base thereof adapted to receive a fitting to be installed on the open end of a hose or the like; f. a die lifting frame mounted on each lift bar disposed above the base; a pair of die halves adapted to fit together to provide a die cavity of the configuration to be imparted to a swaged coupling; means for securing one of the die halves in each frame in face to face relationship; g. means for directing the movement of the lift bars towards each other as they move longitudinally beyond the die base; h. means for introducing a liquid under pressure into the cylinder between the first and second pistons and for the simultaneous passage of liquid from above the first piston out of the cylinder whereby the cylinder moves to a position where its top bottoms on the first piston and the cylinder, lift bars, intermediate cross-bar and pusher move as a unit toward the die base bringing the die halves together and seating them in the cavity of the die base; i. means for continuing to introduce a liquid under pressure into the cylinder between the first and second pistons while the top of the cylinder is bottomed on the first piston and for simultaneous passage of liquid from the cylinder below the second piston with longitudinal movement of the second piston rod, intermediate cross-bar and pusher to an extended position, outside the cylinder; j. means for introducing fluid under pressure into the cylinder above the first piston and for simultaneous passage of liquid from between the first and second pistons and out of the cylinder whereby the cylinder moves longitudinally until its top is adjacent the top cross-bar and carries with it the intermediate cross-bar and pusher still in their extended position; and k. means for introducing liquid under pressure into the cylinder below the second piston and simultaneous passage of liquid out of the cylinder between the first and second pistons with longitudinal movement of the second piston towards the first piston and accompanying retraction of the piston rod, intermediate cross-bar and pusher and separation of the die halves.

Claim 7

A device comprising a. a frame having a pair of transversely spaced longitudinally extending support members each secured at one end to a top cross-bar and at the opposite end to a die base having a cavity therein adapted to support a die; b. an intermediate cross-bar slidably mounted on said support members and spaced longitudinally between the top cross-bar and base; c. a pair of lift bars, one spaced transversely outwardly from each support member and extending longitudinally alongside it with one end thereof between the two cross-bars; d. a cylinder having a cylindrical housing, a top and bottom disposed between the support members and between the two cross-bars; means for securing said cylinder to said lift bars; longitudinally spaced first and second pistons in said cylinder, a first piston rod attached at one end to said first piston and slidably extending through an opening in the top of the cylinder; said opening being sealed against loss of liquid under pressure; the first piston rod being attached at its other end to the top cross-bar; a second piston rod attached at one end to the second piston and extending outwardly through an opening in the base of the cylinder; said opening being sealed against loss of liquid under pressure; the second piston rod being attached at its opposite end to the upper side of the intermediate cross-bar; e. a pusher assembly affIxed to the underside of the intermediate cross-bar and slidable therewith; said pusher having a cavity in the base thereof adapted to receive a fitting to be installed on the open end of a hose or the like; f. a die lifting frame mounted on each lift bar disposed above the base; a pair of die halves adapted to fit together to provide a die cavity of the configuration to be imparted to a swaged coupling; means for securing one of the die halves in each frame in face to face relationship; g. means for directing the movement of the lift bars towards each other as they move longitudinally beyond the die base; h. means for introducing a liquid under pressure into the cylinder between the first and second pistons and for the simultaneous passage of liquid from above the first piston out of the cylinder whereby the cylinder moves to a position where its top bottoms on the first piston and the cylinder, lift bars, intermediate cross-bar and pusher move as a unit toward the die base bringing the die halves together and seating them in the cavity of the die base; i. means for continuing to introduce a liquid under pressure into the cylinder between the first and second pistons while the top of the cylinder is bottomed on the first piston and for simultaneous passage of liquid from the cylinder below the second piston with longitudinal movement of the second piston rod, intermediate cross-bar and pusher to an extended position, outside the cylinder; j. means for introducing fluid under pressure into the cylinder above the first piston and for simultaneous passage of liquid from between the first and second pistons and out of the cylinder whereby the cylinder moves longitudinally until its top is adjacent the top cross-bar and carries with it the intermediate cross-bar and pusher still in their extended position; and k. means for introducing liquid under pressure into the cylinder below the second piston and simultaneous passage of liquid out of the cylinder between the first and second pistons with longitudinal movement of the second piston towards the first piston and accompanying retraction of the piston rod, intermediate cross-bar and pusher and separation of the die halves.