US1989318A - Knitting machine - Google Patents

Description

E. HAussER KNITTING MAcfiINE Filed Dec. :8, 1950 ETsrss,

2 Sheets-s 1 Patented Jan. 29, 1935 1 UNITED STATES- KNITTING MACHINE Eugne Hausser, Lyon, France Application December 8, 1930, Serial In France May 17, 1930 3 Claims.

The present invention has for its object a knitting machine for high speed warp knitting. This loom produces a double fabric with designs on both sides, due to a special arrangement allowing each warp thread to be worked individually and alternately on one or other of two needle bars with the cooperation of a mechanical jacquard.

The employment of different materials is possible on other looms but in the present one the material, which constitutes the ground of the fabric on one of its faces forms the designs for the other face. Thus, for example, the knitted fabric can on one side be formed of black wool with designs made of white silk, whilst the other side presents the same designs in black wool on a ground of white silk.

According to the present invention I provide a hosiery loom comprising two converging bars, needles mounted on said bars and means operatively connected to said needles for imparting to same inverse to and fro movements.

A practical form of the invention is shown, by way of example, on the annexed drawings wherein:-

Fig. 1 is a view in elevation of the Fig. 2 is a plan view of it;

Figs. .3 and 4 are sectional views of the loom;

hosiery loom;

Figs. 5 and 6 are views in elevation of details of the bars provided with guides and show the two pomtions that the threads can take in the combs; and

Figs. 7, 8 and 9 are diagrammatic views showing the functioning of the loom.

The loom comprises two superposed needlec l'rying bars 1-2 inclined one with regard to the other and in which are provided grooves 3 wherein slide needles 4. These bars 1--2 carry at each extremity elements 5 assuring fixation on the abutments 5' 5". On each of the bars 1--2 is mounted a driving bar 6 moving in two slides 7. These bars 6 are controlled by members 8 actuated by cams-and counter-cams 9 mounted on two shafts 16, 16' coupled by two gear wheels 1'7. One of the shafts 16 is driven by a pulley 18 actuacted by any suitable means.

on front of the bars 1-2 are mounted two combs or guiding bars 10 placed one in front of the other and carried by two cross-pieces 11, displaced longitudinally with an inverse to and fro movement by cams and counter-cams 12 driven by a vertical shaft 14 mounted in a frame 13. The shaft 14 is driven from shaft 16 by means of gears 15" and twg helicoidal wheels 15-15. These gears are of such dimensions as to correctly proportion the number of displacements of the combs to those of the needles. I v

At the upper part of the frame 13 is articulated a lever 19 moved by cams or' by any other suitable means so as to control a mechanical jacquard 5 actuating heddles, such as the heddle harness 19' capable of making the individual warp threads pass from one of the combs or bars provided with guides to the other.

0n shafts 1616' are also mounted cams and 0 counter-cams 20-20, which actuate, through the intermediary of levers 21 and 21, two shafts 22- 22' on which are placed other levers 2323' carry ing each a strip 24-24' having the same length as the combs 10.

. 15 In conseqeunceof the driving of the shafts 16- 16 by the pulley 18 and the gears 17, the cams and the counter-cams 9 communicate two alternating to andv fro movements to the driving bars 6 of the needles 4. These bars work one after the other. At the same time, the guides or combs 10 are displaced in front of the needles 4 with an alternating and inverse travel, produced by the cams and counter-cams 12.

A to and fro displacement of the needles corresponds to a single displacement of the guides 10. One comb moves towards the left of the loom whilst the other goes towards the right.

The warp threads are separated and placed directly by the jacquard into one or other of the two combs disposed one above. the other. Each thread passes into a heddle controlled by a hook on the jacquard.

Formation of the mesh takes place in the following manner:--

The two rows of needles are retained at the bottom of their travel and are located one above the other, the two combs being exactly one in front of the other and overlapping one another in the vertical direction.

The warp threads are brought together and form a single sheet in the horizontal axis of the loom (Figs. 6 and 7), two threads being contained between each pair of adjacent teeth.

In its first movement the jacquard actuates the heddles 19' and distributes the warps into two sheets, each possessing the same number of threads. One sheet passes into the upper bar 10 and the other into the lower one (Fig. 5).

If the warp comprises 1000 threads of which 500 are white and 500 black, after the movement of the jacquard, there may be for example, 50 white and 450 black threads inthe upper bar and 450 white and 50 black in the lower one.

At the second stroke of the jacquardthere may be in the upper bar 100 white threads and 400 black threads whilst in the lower bar there may be 400 white threads and 100 black threads. At the end of the travel produced by the jacquard the warp threads come to rest against the bars 24-24' (Fig. 8).

The needles of the upper bar 6 advance to the bottom of their travel, then the bar 24 raises the threads in the lower guide bar 10 and causes these threads to passabove the hooks on the needles 4.

During this time the bar 10 is displaced laterally by an amount sumcient to assure, whilst the bar 24 goes down again, the hooking of the warp threads by the needles which are then withdrawn and lay down the upper mesh of the fabric.-

The lower needles as well as the bar 24 make the same movement to form the lower mesh of the fabric. 7

The upper needles hooking the threads of the a lower sheet and vice versa, allow the union of the two meshes to form homogeneous fabric.

The two bars provided with guides as well as the, jacquard take up again their starting position. The two sheets of the threads assemble again and form a single warp at the centre of the two bars provided with guides (Fig. 7)

The movement of the jacquard commences again for the formation of the following mesh whilst the two bars provided with guides are displaced laterally in a direction opposite to that of their preceding travel.

With this loom it is thus possible to obtain any desired designs since threads of any nature and colour can at will be made on one or other of the faces of the fabric.

All the fabric threads are worked together by the needles and produce a row of upper and lower meshes. On the other hand, all the threads of the fabric have the same warp contraction which permits the mounting of the warp on a single beam.

adjacent the needles, means connected with the combs for moving the same in reverse directions transversely to the movement of the needles, in termittently movable elements adapted to dispose threadsjnto needle engaging positions, and

mechanism for selectively arranging the threads in the respective guide combs.

2. A knitting machine comprising a pair of converging members, a row of needles attached to each of said members, means connected with the needle carrying members for imparting alternate reciprocating movement thereto, a pair of guide combs arranged in overlapping positions adjacent the needles, means connected with the combs for moving the same in opposite directions transversely to the movement of the needles, intermittently movable elements adapted to dispose threads into needle engaging positions, and jacquard controlled mechanism for selectively arranging the threads in the guide combs.

3. In a knitting machine, a pair of converging bars, a row of needles attached to each of said bars, means connected with the needle carrying bars for reciprocating the same in alternate directions, a pair of guide combs arrangedin overlapping positions in front of the needles, means connected with the combs for movin": the same transversely to the direction of movement of the needles and in opposite directions, intermittently movable elements adapted to engage threads to dispose the threads into hooking position with respect to the needles, and mechanism for selectively arranging the threads in the respective guide combs.

EUGENE HAUSSER.

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