US2074089A - Jacquard covering and tuck pattern device for flat hosiery frames - Google Patents

Description

March 16, 1937. A. LOIMANN JACQUARD COVERING AND TUCK' PATTERN DEVICE FOR FLAT HOSIERY FRAMES Filed May 15, 1954 Patented Mar. 16, 1937 PATIENT. OFFICE JACQUARD COVERING TUCK PATTEB DEVICE FOR FLAT HOSIERY FRAMES \Anton Loimann, Chemnitz, Germany 7 Application May 15, 1934, Serial No. 725,781 In Germany June 8, "1933 2" Claims. (01. 66- 98) Thisinvention relates to a jacquard covering and tuck pattern device for flat hosiery frames, in which auxiliary sinkers, vertically adjustable according to pattern, are provided within range 5 of the-knocking over bits.

To avoid the defects of covering "or. tuck pattern devices and to impart to the vertically adjustable auxiliary members a reliable drive during their forward motion in'the direction towards the frame or covering needles Without being forced to niove the guide bed of the auxiliary members, disposed relatively far below the sinker bar, that. the bed canbe stationary, .though it may be taken out; The

invention provides thatithe auxiliary members are arranged in their giiide bed so as to be both vertically and'horizontally" movable therein. The

auxiliary members are adjusted in thedirection tothe-covering'or frame needles by a presser bar capable of. forward and backward motion, so that the back pressure of the needles is taken up not by the" low guide bed of said members, but almost completely by the presser bar, and the guid- ,ing'of the auxiliarysinkers during vertical ad-; 'justment as well as the driving motion are efiected in a niore reliable manner than in known devices. The arrangement just described affords the considerable advantage that the auxiliary -members 'may safely be adjusted :from below through the-row of jack and dividing sinkers so high that ftheir upperends will acton the back of the covering needles for guiding them, in openv work. reliably to the'frame' needles without the least trouble which otherwise easily develops in c nnection with auxiliary members.

- .One form of the'invention is, illustrated in the accompanying drawing, in which Figure 1 is a side view of the frame required for understanding the invention o and shown in position during regular operation; Fig. 2, a view of the same parts during the production of a covering pattern.

Referring to the'drawing", the jack and dividing sinkers b are displaceable on the lower part a or the sinker bar and cooperate as usual with the needles 0. Knocking overtakes place on the bits 0. The comblike yet integral presserbar d is capable of horizontal'forward and backward adjustment. It is supported on the top t of the 60 sinker bar. The sinker bar is recessed so that the presser bar it with its edge I can be withdrawn or retractedinto a position back of the ordinary working position and thus the auxiliary members I can be adjusted in front of the presser bar. i In ordinary operation the presser bar d is hor-' the known jacquard parts ofan ordinary flat hosiery izontally moved to and fro according to the double I arrow 3:, so that it comes within range of the needle beards during pressing andthe otherwise unavoidable swinging motion of the needles for pressing off can be dispensed with. In this case the auxiliary members 7 are retracted under the-presser edge I ofthe presser bar d. For carrying out open work the auxiliary members f are movable up and down in stationary guides of-the machine frame and rest with their lower end in known manner on the plates 9 guided in the machine frame and connected, by

threads or wires h with a jacquardattachment by means of which they can be horizontally adjusted ontheir guide bed. 'The'plates g possess one or several steps and when displaced raise the auxiliary members I from a lower inoperative into a higher operative position. The guide beds of the members I and of the. plates 9 are stationarily, yet removably supported, so that the threads orwires h can be connected with plates g.outside the machine. After removal of the guide bed of the plates 9 the auxiliary members f rest with their projecting nibs r on an edge of their guiding device 2.

When the members are used, 1. e., patterns. are produced, the presser bar (I is moved 'far enough away from the needles c to allow the. members 1 to be adjusted in front of the presser edge I and to be pressed forward acting against the beards of the frame needles oragainst the transfer needles.

-To produce lace patterns the members 1 are raised high enough to have-theirupperends Icbeyond the lower nibs of the jack and dividin 35 sinkers. 'Duringforward motion of the presser bar d,,driven' by a'special eccentric, the auxiliary members are pressed against the backs of the transfer needles m in a manner similar to the well known rock members of U. S. Patent No. 1,858,777 after the transfer needles have been lowered, so that the transfer points engage the grooves of the frame needles 0 and take up their loops. As the members y, do not engage the points of the,

- transfer needles m, but act on a higher and much d, so that these needles receive'the finished loops whereas the loops of the needles whose auxiliary members I have not been raised are locked in the needle beards.

'It is possible to provide only one step on the plates 9 to raise the operating members I tor producing both tuck or lace patterns. In this case the upper ends of the members I act upon a lower point of the transfer needles than when raised by a special step of the plates 9.

It is not absolutely necessary to move the presser bar horizontally to and "fro, on the contrary, it being possible to move the frame needles with the transfer needles onto the upper ends of-the raised members i.

Instead of providing a presser bar d on the top of the sinker bar there may be arranged a bar moving the auxiliary members I to and fro between the jack and dividing sinkers and the knocking over comb or below the latter. For the same purpose it ispossible to use the knocking over comb.

I claim:

'1. Jacquard covering and tuck pattern device for flat hosiery frames, comprising knocking over bits, a guide bed, auxiliary members disposed ln said bed and vertically and horizontally movable therein, a presser bar capable of forward and backward displacement, and means for raising said auxiliary members from inoperative position to within range of said presser bar, the upper ends of the raised members being moved in a to and fro horizontal direction.

'2. A device according to claim 1, in which the upper ends of the auxiliary members after raising the latter vact on the backs of the covering needles beyond the lower nibs of the jack and dividing sinkers.

ANTON LOHVIANN. 20

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