US3024634A - Abating sinker for circular knitting machines - Google Patents

Abating sinker for circular knitting machines Download PDF

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Publication number
US3024634A
US3024634A US75616A US7561660A US3024634A US 3024634 A US3024634 A US 3024634A US 75616 A US75616 A US 75616A US 7561660 A US7561660 A US 7561660A US 3024634 A US3024634 A US 3024634A
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Prior art keywords
sinker
beak
abating
sinkers
needle
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Expired - Lifetime
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US75616A
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English (en)
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Tenconi Riccardo
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Individual
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Individual
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/06—Sinkers

Definitions

  • the present invention relates to circular knitting machines and more particularly is directed to an improved type of abating sinker for circular machines for the manufacture of stockings and socks.
  • the main members of those machines which cooperate for the formation of the loops are the needles and the sinkers.
  • Generally tongued needles are used which are arranged in the longitudinal slits of the needle-cylinder while the sinkers constituted by shaped steel plaques are arranged in as many radial slits of the sinker-ring rigid with the needle-cylinder.
  • the needles are controlled by the cams of the cam-assembly to effect rising and descending movements
  • the sinkers are controlled to effect radial movements synchronized with the movements of the needles.
  • sinkers which have different shapes; all of them generally have a beak. a throat formed by that beak and, in front of the throat, the abating plane.
  • the present invention provides a sinker that eliminates the above mentioned inconvenience and permits attainment of the main object of forming uniform and calibrated loop heads without having to modify the remaining control members already existing in the circular knitting machines and without having to resort to any supplemental members.
  • an abating sinker which, in addition to its normal beak, has a second or supplemental beak disposed at a short distance before the normal beak.
  • the normal beak of the sinker embodying the invention is active only during forming of the first course and functions to prevent the needle from dragging the formed loop head upwards.
  • the needle works in the usual way, that is to say, in front of the normal beak.
  • the supplemental beak is active and the needle works behind said supplemental beak which has the function of calibrating accurately the length of each loop head that is formed.
  • FIG. 1 is a side elevational view of a sinker of conventional type
  • FIG. 2 is a side elevational view of a sinker according to the invention.
  • FIGS. 39 diagrammatically illustrate the successive stages of formation of the loops beginning with the initial looping; and FIG. 10 is a developed sectional view taken along the line X-X on FIG. 9, and showing the cooperative relationship of several needles and sinkers.
  • the conventional type of sinker P illustrated in FIG. 1 is a generally blade-like or laminar member which comprises a beak 1, a throat 2, the abating plane 3, the nose 4, the body 5, the heel 6 and an abutment 7 for the spring (not shown) that surrounds all of the sinkers in the sinker-ring.
  • the needle that has gripped the thread 12 descends (FIG. 4) and simultaneously the sinker moves radially outward sufliciently so that the thread is made to rest between the two beaks 1 and 8 of the sinker. Then the needle rises again (FIG. 5) and the beak 1 retains the thread 12 in throat 2 thus preventing the upward movement of the thread as happens with the normal sinkers.
  • the invention achieves the desired uniformity in the loop heads in an extremely simple manner and does not require anything but the replacement in the existing knitting machine of conventional sinkers by sinkers having two beaks. All of the remaining control parts and parts actuating the needles and sinkers in the circular knitting machine have not been referred to in detail in the present description because the same are known to those skilled in the art, and need not be varied from those in common knitting machines.
  • the adoption of the sinker according to the present invention does not affect the possibility of varying at will the length of the loop heads, which variation is obtained, as is well-known, by displacing the needle-cylinder upwards or downwards.
  • the greater the upward displacement of the cylinder the greater will be the length of the loop heads that are formed.
  • the cam for controlling the sinkers should be simultaneously displaced radially inward to permit the sinkers to be moved a greater distance radially outward during the calibrating stage (see FIGS. 7 to 9).
  • the cam for controlling the sinkers upon displacement of the needle-cylinder downward, there will have to be eifected a corresponding radially outward displacement of the cam for controlling the sinkers.
  • the members that effect such displacements of the sinker-controlling cam in accordance with the displacement of the cylinder may be very simple, for instance levers or the like, and it is believed unnecessary to describe a particular embodiment thereof.
  • An abating sinker for circular knitting machines particularly adapted for the manufacture of hosiery; said sinker comprising a laminar body having a first beak defining a first throat and an abating plane, and a second beak at a short distance from said first beak and defining a second throat.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US75616A 1959-12-16 1960-12-13 Abating sinker for circular knitting machines Expired - Lifetime US3024634A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2099359 1959-12-16

Publications (1)

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US3024634A true US3024634A (en) 1962-03-13

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US75616A Expired - Lifetime US3024634A (en) 1959-12-16 1960-12-13 Abating sinker for circular knitting machines

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US (1) US3024634A (da)
BE (1) BE598166A (da)
ES (1) ES263091A1 (da)
GB (1) GB939319A (da)
NL (1) NL258138A (da)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1959833A (en) * 1930-10-10 1934-05-22 Karl Lieberknecht Gmbh Knitting machine and method of operating thereof
US2126797A (en) * 1936-01-15 1938-08-16 Max C Miller Knitting machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1959833A (en) * 1930-10-10 1934-05-22 Karl Lieberknecht Gmbh Knitting machine and method of operating thereof
US2126797A (en) * 1936-01-15 1938-08-16 Max C Miller Knitting machine

Also Published As

Publication number Publication date
GB939319A (en) 1963-10-09
ES263091A1 (es) 1961-04-16
NL258138A (da)
BE598166A (fr) 1961-03-31

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