Chain – staple – and horseshoe making – Chain making – Combined machines
Patent
1990-01-23
1992-03-03
Jones, David
Chain, staple, and horseshoe making
Chain making
Combined machines
59 16, 59 80, 59 83, B21L 700
Patent
active
050921207
ABSTRACT:
A machine for the formation of ornamental chains with cylindrical helix-shaped links, comprising: a first section (A) for handling each loose link up to the connection thereof with the corresponding link, of the chain being in the process of formation, which has been last connected, with a handled vertical shaft (12) carrying a horizontal guide support (15) for a slide (16) of a collet-holder unit horizontally sliding between an inoperative retracted position and two advanced positions for seizing a loose link from a link-forming machine and for positioning the loose link in connection position, respectively; with a collet (35) for the hold of the loose link, which is subjected to a helicoidal feeding motion along its longitudinal axis to carry out the connection with the corresponding last link of the chain in the process of formation; a second section (B) for blocking the last link but one of the chain in the process of formation, with a hollow vertical motorized axially sliding shaft (42) carrying a horizontal guide (43) for a slide (44) equipped with two separate clamps (45, 46) and suitably movable for separately positioning the clamps (45, 46) at the blocking position for the blocking of a corresponding link of the chain in the process of formation.
REFERENCES:
patent: 2617250 (1952-11-01), Kunzmann et al.
patent: 4903475 (1990-02-01), Bucefari et al.
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