B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
26/83
B23P 11/00 (2006.01) B21D 39/04 (2006.01) B21F 15/06 (2006.01) E04C 5/16 (2006.01)
Patent
CA 1059301
ABSTRACT Apparatus for fastening to adjacent substantially co- axially disposed reinforcing rod ends a sleeve of uniform external cross-section throughout its length and having internal cross-sectional dimensions to enable it to receive and embrace both rod ends, comprising at least two fluid pressure operated jack units each having a cylinder, a piston and a piston rod; latching means for releasably securing the jack cylinders together in parallel spaced relationship to one another around one of the reinforcing rods in a zone not occupied by the sleeve; at least two die segments, which collectively provide an axial bore at least part of which is dimensionally smaller in cross- section than the external cross-sectional dimension of the sleeve, loosely mounted on the free ends of the piston rods so as to be capable of limited rotational movement relative thereto in a longitudinal direction; die segment retaining means at the extremities of the piston rods; pusher means associated with the jack cylinders extending in a direction towards the die segments which engage one end of the sleeve and prevent it from moving axially relative to the rods; ring-shaped locking members for temporarily securing the die segments in operative relationship one to the other and which permit the aforesaid limited rotational movement thereof; and complementary formations on the die seg- ments for receiving the ring shaped locking members.
272976
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