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(11) | EP 0 290 897 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Device for controlling the selectors in a four-feed circular knitting machine for socks and stockings |
(57) The device comprises a ring cam (2) arranged around the needle cylinder at the lower
ends of the selectors (4) and having an upper profile with rises (8) defining an ascending
section (9) upstream of each machine feed and a descending section (10) downstream
of each feed, according to the rotational direction of the needle cylinder with respect
to the ring cam (2). Located upstream of each ascending section (9) is an extraction
cam (12), which acts on the selectors (4) to extract their heels (4a) from the grooves
of the needle cylinder so as to be selected by the selection levers (14). The extraction
cam (12) is positioned so as to cause commencement of the exit of the heels (4a) from
the relative grooves before the end of the descending section (10) of the ring cam
(2) which has a recess (16) on its inner side to permit commencement of the extraction
of the heels (4a). |