US2120750A - Flat rib knitting machine - Google Patents

Description

June 14, 1938. w. HElNlTi FLAT RIB KNITTING MACHINE Filed May 13, 1937 2 Sheets-Sheet 1 1711 01/0 WOLDEMAR' HEIN! T2 3 y W g-M June 14, 1938. v w. HElNlTZ.

FLAT RIB KNIITTING MACHINE Fil'edMay 13, 1937 2 Sheets-Sheet 2 ATTORNEY- Patented June 14, 1938 UNITED STATES PATENT OFFICE FLAT RIB KNITTING MACHINE Application May 13, 1937, Serial No. 142,485

In Germany May 19, 1936 10 Claims. (CI. 66-90) The present invention relates to fiat rib knitting machines and more particularly refers to flat rib knitting machines provided with a' jacquard controlled patterning device for the manufacture of ribbed-fabrics showing wrap patterns, tuck-patterns and tuck-patterns on a double sided fabric respectively and wrap-tuck patterns.

Hitherto ribbed-fabrics provided with wrap patterns, tuck-patterns and tuck-patterns on a double sided fabric respectively and wrap-tuck patterns have been produced by reciprocating in one level the roller over which the jacquard cards are led. The jacquard cards were provided with two or more rows of perforations depending upon the kind of pattern to be produced. By shiftin the jacquard roller in the direction towards the frame needles, the wrap guides are operated, whereas by shifting the jacquard roller in the 20 opposite direction, slides are operated which in turn, by means of a, lever system, actuate the press instruments.

With these known constructions, the row of perforations acting upon the wrap guides must be 5 arranged in another jacquard card than the row of perforations serving to influence the press instruments. As the jacquard roller is reciprocated without being turned, the press instruments must be actuated by the jacquard card arranged upon 30 the side of the jacquard roller opposite to that upon which the jacquard card acting upon the wrap guides is arranged.

Besides a great wear of the cards, this arrangement has, in carrying out certain patternings, 5 the disadvantage, that the designing of such patterns is extremely diflicult and in most cases subject to faults. A very great practice is required to correctly provide the individualperforations in the two jacquard cards, as the same cards also 40 have separated perforations used for a further row of patterns.

Another draw-back of the known device consists in the transmission of the movement of the slides upon the press instruments. This trans- 5 mission can only be effected by way of a link or lever system and, therefore, is complicated I and extremely delicate.

The device, forming the subject matter of the present invention, avoids all these draw-backs 50 by the fact, that for the purpose of selecting the operation of the wrap guides and the press instruments the roller guiding the jacquard cardis displaceable in several planes in such a manner, that for producing the various kinds of pat- 55 terns a single jacquard card is used for each row of patterns. This card may be provided with a. plurality of rows of perforations or with a single row of perforations only.

For the purpose of producing wrap patterns and for the purpose of making tuck-patterns or 5 tuck-patterns on a double sided fabric respec tively, the jacquard card is moved in one position only in the direction towards the wrap guides, for instance for the manufacture of wrap patterns in the lower position and for producing 10 tuck-patterns or tuck-patterns on a double sided fabric respectively in the upper position.

In producing wrap-tuck patterns, the jacquard card provided with two or more rows of perforations arranged in one leaf one beneath the other is, by means of the jacquard roller, shifted in two levels in the directiontowards the wrap guides and the press instruments and in a direction at a right angle thereto.

As the press instruments and the wrap ides are influenced by moving the jacquard roller in the same direction, the substantial advantage is obtained, that the transmission members required with the known constructions for displacing the press instruments are superfluous. The press instruments are, like the wrap guides, directly controlled by the jacquard card. According to the level into which the jacquard roller has been adjusted, the rows of perforations of one and the same jacquard card act upon the wrap guides or the press instruments.

If wrapping over one needle is eflfected by a group of wrap guides and if, therefore, the locally equally journalled wrap guides and press instru' ments are to be influenced, the two rows of perforations arranged one above the other in the same card may also be combined to a single row.

In the accompanying drawings two construe: tions according to the invention are shown by way of example. 40

In these drawings:

Figs. 1-3 show the parts of a flat rib knitting machine which according to the invention come into consideration in the position of rest, in the position for actuating the wrap guides and in the position for actuating the press instruments respectively,

Fig. 4 illustrates a portion of a jacquard card provided with two rows of perforations,

Figs. 5-7 show views of a modified construction having a-double wrap guide-jacquard device in the positions indicated in Figs. 1-3, and

Fig. 8 illustrates a portion of a jacquard card provided with three rows of perforations.

The frame needles I, the rib needles 2, the jack sinkers 3 and the general presser 4 are arranged in the usual manner. The wrap guides 5 are mounted in a frame 6 and in the position of rest their heads lie beneath the frame needles. A displaceable rod 1 acts upon thewrap guides 5. The press instruments 9 are displaceably arranged in guides 8 of the frame 6 in front of the frame needles I. A displaceable rod l acts upon the press instruments.

Pivotally mounted upon a shaft H is a jacquard roller l2 which carries a jacquard card i3. The shaft H is journalled in arms not shown in the drawings which may be oscillated to allow shift-. ing of the shaft II in a lower horizontal plane, a vertical plane and an upper horizontal plane. According to the pattern to be produced each leaf of the jacquard card I3 is provided with perforations, for instance, as shown in Fig. 4 with two rows of perforations I4 and l5.

In Fig. 1 the individual parts of the device are shown in the position of rest. If now the wrap guides are to be operated to produce wrap patterns, the jacquard roller I2 is shifted in the lower horizontal plane in the direction of the arrow :c in Fig. 1, i. e. in the direction towards the. wrap guides 5 (Fig. 2). If perforations for instance in the lower row I! are present in the jacquard card l3 opposite the rear ends of the Wrap guides 5, the jacquard card is shifted over the rear ends of the wrap guides, so that the position of these guides is not altered. If no perforations are present, the wrap guides are displaced and lifted, so that on lifting and lateral displacement of the frame 6 these wrap guides may place their threads around the oppositely positioned frame needles I (Fig. 2). The advanced wrap guides are returned again by the rod I into the position of rest after the pattern row has been finished. The row of perforations I5. is not required during the manufacture of wrap patterns. The press instruments remain in the position of rest.

If the press instruments are to be operated for producing tuck patterns, the frame 6 is lifted, so that the pressinstruments on being advanced are positioned above the frame needles. The Jacquard roller 12 is lifted in a vertical plane in the direction of the arrow 1 from its position of rest shown in dotted lines 'in Fig. 2. Then the jacquard roller I2 is shifted in the direction of the arrow 1/ towards the press instruments 9, that is to say, the roller I2 is shifted in the upper horizontal plane. Thereby, for instance, the upper row l5 of perforations in the jacquard card l3 acts upon the press instruments 9. If perforations are present, the jacquard roller 12 is shifted over the rear ends of the press instruments, whereas the other press instruments.

are moved by the jacquard card I 3, so that the front end of these instruments is brought into a position above the frame needles I. By means of the general presser 4 the beards of the corresponding frame needles are pressed in a well known manner. The advanced press instruments are returned again into the position of rest by the rod l0 as soon as the pattern row is finished. For the manufacture of tuck-patterns,

therefore, the row of perforations I4 is not required. The wrap guides remain in the position of rest.

For the manufacture of wrap-tuck patterns both rows l4 and I5 of perforations are required in which case the jacquard roller 12 is moved in the lower horizontal plane from the position of rest towards the wrap guide: 5 in the direction of the arrow .1: in Figs. 1 and 2 and the lower row H of perforations in the jacquard card I3 is rendered operative. As in the manufacture of wrap patterns, the advanced wrap guides place their threads around the oppositely arranged frame needles I by lifting and lateral displacement of the frame 6. Thereupon the jacquard roller [2 is returned again into the position of rest in the direction opposite to that of the arrow :1:, i. e. in the direction of the arrow z in Fig. 3. The wrap guides 5 are returned into their position of rest again by the rod 1. Thereupon the jacquard roller i2 is lifted in the vertical plane in the direction of the arrow z and finally shifted in the upper horizontal plane in the direction of the arrow 2" towards the press instruments 9, so that now the upper row l5 of perforations in the card l3 may act upon the press instruments 9 (Fig. 3). Of course, the rows l4 and I5 must for this purpose be provided with the required perforations corresponding to the patterning. By means of the rod III, the press instruments 9 are returned again into the position of rest as soon as the pattern row is finished.

In each of the pattern rows mentioned the cycle of operations is repeated in the manner described.

If a plurality of rows of wrap guides, for instance two rows, are present, the jacquard card is provided with a correspondingly greater number of rows of perforations. According to the construction shown in Figs. 5-7 two rows of wrap guides 5 and I6 are provided, so that, as shown in Fig. 8, the jacquard card I3 is provided with a further row of perforations H. The perforations l4 and I1 act upon the wrap guides 5 and IS in the manner described above. The press instruments 9 are actuated in the described manner by the upper row of the perforations i5.

If a group of wrap guides places the thread over one needle, the perforations required for the wrap guides correspond to the perforations required for the press instruments. In this case it is also possible to combine the two rows of perforations of the locally equally arranged guides and press instruments. The wrap guides or the press instruments may in such a case also selectively be influenced by shifting the jacquard card in different planes. r

What I claim is:

1. A flat rib knitting machine substantially for the purpose set forth comprising frame needles, rib needles, a general presser, press instruments, wrap guides, .jacquard controlled means, selectively actuating said press instruments and said wrap guides, and means for shifting said jacquard controlled means in different planes.

2. Aflat rib knitting machine substantially for the purpose set forth comprising frame needles, rib needles, a general presser, press instruments, wrap guides, a jacquard roller, and a jacquard card selectively actuating said press instruments and said wrap guides, said jacquard card being carried by said jacquard roller and means for shifting said jacquard roller in different planes.

3. A flat rib knitting machine substantially for the purpose set forth comprising frame needles, rib needles, a general presser, press instruments, wrap guides, a jacquard roller, and a jacquard card selectively actuating'said press instruments and said wrap guides, said jacquard card being carried by said jacquard roller and provided with a plurality of rows of perforations, and means for shifting said jacquard roller in different planes.

4. A flat rib knitting machine substantially for the purpose set forth comprising frame needles, rib needles, a general presser, press instruments, wrap guides, a jacquard roller, and a jacquard card selectively'actuating said press instruments and said wrap guides, said jacquard card being carried by said jacquard roller and provided with a single row of perforations, and means for shifting said jacquard roller in different planes.

5. A flat rib knitting machine as set forth in claim 3 in which said jacquard card is displaceable in one position, i. e. a lower position only, for the purpose of producing wrap patterns.

6. A flat rib knitting machine as set forth in claim 4 in which said jacquard card is displaceable in one position, i. e. a lower position only, for the purpose of producing wrap patterns.

7. A flat rib knitting machine as set forth in claim 3 in which said jacquard card is displaceable in one position. i. e. an upper position only, for the purpose of producing tuck patterns and tuck patterns on a double sided fabric respectively.

8. A flat rib knitting machine as set forth in claim 4 in which said jacquard card is displaceable in one position, i. e. an upper position only, for the purpose of producing tuck patterns and tuck patterns on a double sided fabric respectively.

9. A flat rib knitting machine as set forth in claim 3 in which said jacquard card is, by means of said jacquard roller, displaceable in two different levels in the direction towards said wrap guides and said press instruments and in a direction vertically thereto, for the purpose of selectively acting upon said wrap guides and said press instruments.

10. A flat rib knitting machine as set forth in claim 4 in which said jacquard card is, by means of said jacquard roller, displaceable in two different levels in the direction towards said wrap guides and said press instruments and in a direction vertically thereto, for the purpose of selectively acting upon said wrap guides and said press instruments.

WOLDEMAR HEINI'IZ.

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