US2307376A - Pattern mechanism for the manufacture of lace patterns - Google Patents

Description

J. LORENZ 2,307,375

PATTERN MECHANISM FOR THE MANUFACTURE OF LACE PATTERNS Jan. 5, 1943.

Filed May 31, 1959 5 Sheets-Sheet l Jan. 5, 1943. J. LQRENZ PATTERN MECHANISM FOR THE MANUFACTURE OF LACE PATTERNS Filed May 51, 1959 5 Sheets-Sheet 2 I6 I 11w nuUnDErBD P,,nnnnmntn E -555% 1 a a v.

' [Hrenforx JoflA/v/vts LORENZ Af-romvc'v Jan. 5, 1943.

J. LORENZ 2,307,376

PATTERN MECHANISM FOR THE MANUFACTURE OF LACE PATTERNS 5 Sheets-Sheet 5 Filed May 51, 1959 llllllllllilflk Jan. 5, 1943. c z 2,307,376

7 PATTERN MECHANISM oR THE MANUFACTURE OF LACE ,PATTERNS Filed May 31, 1959 5 Sheets-Sheet 4 JZ/Lazzkzes lloren 'fi mam a- 25; f?

Jan. .5, 1943. J. LORENZ 2,307,376

PATTERN MECHANISM FOR THE MANUFACTURE OF LACE PATTERNS Filed May 31, 1959 5 Sheets-Sheet 5 Jb/zannes Lure/5 1 4VJZM KM fl g.

Patented Jan. 5, 1943 PATTERN MECHANISM FOR THE MANU- FACTURE OF LACE PATTERNS Johannes Lorenz, Chemnitz, Germany; vested in the Alien Property Custodian Application May 31, 1939, Serial No. 276,699 In Germany May 31, 1938 7 Claims.

The present invention relates to flat rib knitting machines provided with a jacquard wrap pattern mechanism for the manufacture of lace patterns.

Hitherto lace patterns have been produced on fiat rib knitting machines by tickling on individual loops of a row of needles by lace points arranged according to pattern and by tickling oif such loops upon the adjacent needles. Thereby only a certain possibility of patterning is obtained.

By means of the present invention the production of lace patterns distributed according to jacquard patterns is possible at desired points of a row of loops. This is obtained by the fact that by means of a jacquard mechanism, already present for the wrap guides, lace points are brought into the range of the heads of the needles ofa row of needles or withdrawn out of this range, whereby jacquard lace patterns or jacquard wrap patterns or ordinarily jacquard lace and jacquard wrap patterns are formed on the corresponding needles in one row of needles.

It is already known to shiftably mount the jacquard roller in such a manner as to be capable of being moved in two positions of height in the direction of the guides to be moved and at right angles to these, thereby allowing the jacquard roller to selectively act upon one or the other group of guides or points. invention, the jacquard mechanism moved in the position for acting upon the lace points then performs a selecting motion only relatively to the lace points, while all other movements required .areperformed by a frame carrying the I Figure. represents the tickling on position on the lace points. Flgurefi shows a plan view-of a portion ofa jacquard card having two rows of perforations.

Figure 7 illustrates a plan viewof a portion of a jacquard card provided with three rows of perforations.

According to the r Figure 8 is a view partly in section of the device according to the invention.

Figure 9 is a plan view of the invention.

Figure 10 is an elevation of the device according to the invention, and

Figure 11 is a view similar to that illustrated in Fig. 8 but showing the individual members in a different position.

In the machine illustrated the frame needles I (Fig. 9), the rib needles 2 of which in practice there is a plurality, the jack sinkers 3 of which in practice there is also a plurality, the general presser 4, and the knocking over bits 5 of which, finally, there is also a plurality in practice, are arranged in the usual manner.

The wrap guides IIare arranged in a known manner in a head carrying a head rail I5 of a frame I6. Only one group of wrap guides II, or several groups, as indicated for instance in the drawings, may be provided. In guides I8, swingably mounted upon a shaft 44 journaled'in the rear portion of the frame I5, arms I9 are shiftably arranged carrying a frame in which lace points 9 (Fig; 9) are individually movably arranged in guides 2| and held in these guides by covering rails 2|.

In the machine frame, moreover, a shaft 22 is mounted carrying double- armed levers 23, 24. Links 25 (Figs. 2 and 8), actuated in the usual manner by means of a cam device (not shown), are connected to the lever arms 23. The lever arms 24 carry rollers 26 cooperating with stop plates 21 provided on the arms I9. By means of springs 28 connected on the one hand to the guides I8 and on the other hand to the arms I9, the stop plates 21 are pressed against the rollers 26 of the levers 24. Fixed upon the rear covering rails 2| of the guides 2| are leaf-springs 29, carrying a safety rail 30. The latter is provided with a projection extending rearwardly as an inclined surface 3| and forming a shoulder 32 at the front end. In the head rail I5 of the frame It releasing members 33 for the safety rail are fixed, the nds of which have an inclined surface at the side facing the frame needles I wardly directed arms 34. The .rollers 35 are guided upon races 36 fixed upon the head rail I5 of the frame I6. Theraces are provided with trough-shaped recesses 31. By means of' springs 38 the endsof which are connected to the frame 20 and the frame I 6 respectively, the guide rollers 35 are drawn against the races 36. A displaceable rail I cooperates with the projections 8 of the lace points 9.

Mounted at suitable frame members are guide members 60 which serve to guide a lifting slide SI carrying the bolt 62 and the slide 63. By means of a cam this lifting slide 6| is moved in an upward and downward direction as required. Displaceably mounted upon the bolt 62 and the slide 63 is the guide head bearing 64. The bearing 64 is guided by means of screws 65 and 66 (Fig. 8). For safety purposes the bolt 64' is provided. The guide head bearing 64 carries the head rail I as well as the roller sliding bearing 61 which latter is guided by the lifting rod 68 in the guide head bearing 64. To prevent an undesired rotation of th sliding bearing 61 a bolt 69 is provided. Guided in the sliding bearing 61 is a cube bearing Ill carrying the jacquard roller 40. The cube bearing I0 is provided with an extension I0 carrying a pin 1| which is hingedly connected to an arm I3 of a double-armed lever I3, I6, by means of a link 12. The double-armed lever I3, I6 is mounted upon -a shaft I4 which may be rotated as required by the main cam shaft (not shown) of the machine by means of a link I5 and the arm I6 of the double-armed lever I3, I6.

If normal jacquard wrap patterns are to be produced, the sliding bearing 61 occupies the position shown in Fig. 8. If, however, jacquard lace patterns are to be produced the lifting rod 68 is raised by means of a cam (not shown), so that the jacquard roller 40, if moved forwardly, actuates the lace points 9, as shown in Fig. 11.

From Fig. 9 it may be gathered, that the lace points 9 are arranged opposite the frame needles I across the entire width of the division. After selecting the lace points 9 to be operated by means of a jacquard card 4I, made for this purpose, the corresponding loop is covered and transferred as soon as the jacquard roller 49 is moved.

Besides the above described roller bearings 61, 68, B9 and I0 the frame I6 is mounted upon the head rail I5. The frame I6 in turn carries the bearing I6 and the guide I8 rotatably mounted on the shaft 44. In the guide I8 again arms l9 are displaceably mounted which carry the frame 20 with the guides 2| and the cover rails 2|.

To release the lace points 9 to be operated and to return the latter a bent rail 'II provided with two pins I3, I8 (Fig. 8), is connected to the rail ID at both ends of the same. If the jacquard roller 40 in its upper operating position shown in Fig. 11 is shifted, the shaft 39 strikes against the pin I8 and releases the lace points before the jacquard card reaches these lace points. If now the jacquard roller 40 is returned the pin I8 is engaged and shifted by the shaft 39 and all the lace points are returned into their normal position.

Each card 4| of the jacquard mechanism is provided with perforations corresponding to the pattern to be produced. If the wrap guides and the lace points are operated'without feeding the jacquard card two rows of perforations 42 (Fig. 6) are required for the wrap guides and the lace points if only one group of wrap guides is present. example shown in the drawings two groups of wrap guides are present, three rows of perforations 43 (Fig. 7) are required in each jacquard card.

In Fig. 1 the individual parts are shown in their position of rest. By moving the jacquard If, however, as has been'assumed in the roller 48 forwardly in the lower horizontal plane in the direction of the arrow :1: (Fig. 2) the wrap guides required for the patternings are in the usual manner advanced from their position of rest, whereby they are lifted. After further lifting and lateral shifting of the whole mechanism (Fig. 2), the selected wrap guides I1 in a known manner place their thread around the oppositely situated frame needles I. During the production of wrap patterns, the lace points 9 remain in their position of rest.

If lace patterns are to be produced by the lace points 9, the whole mechanism is lifted in such a manner that the lace points 9 when advanced are moved over the frame needles I. From its position of rest the jacquard roller 40 is in the manner described above lifted upwardly in a vertical plane in the direction of the arrow (Fig. 3) andthen advanced against the lace points 9 in the upper horizontal plane in the direction of the arrow 2. As far as no perforations are present in the jacquard card, the lace points are advanced and shifted over the hooks of the frame needles (Fig. 3).

The jacquard roller 40 performs a single selesting movement only towards the lace points. All other movements required are solely effected by the frame 28 carrying the lace points 9.

The frame 20 is usually held in the position shown in Fig. 3 by the arm 24 of the doublearmed lever 23, 24. The stop plate 2'! is situated opposite the guide I8 in the position indicated at E. The guide roller 35 bears against the portion of the race 36 lying behind the trough-like recess 37. The point of the projection of the safety rail 30 rests upon the releasing part 33, so that shifting of the rail ID as far as to the front covering rail 2! is not impeded (Fig. 3).

To bring the lace points into the lace transferring position, the double- armed lever 23, 24 is swung by means of the link 25 actuated by the cam device to shift the arms I9, as may be seen from Fig. 4, into the position F (Fig. 3) without changing the position of the frame I6. By this movement the safety rail 30 slides off the releasing part 33 and leaf springs 29 cause the shoulders 32 of the safety rail 30 to engage behind the projections 8 of the advanced lace points 9, so that the selected lace points are secured in position. Simultaneously the guide rollers 35 are moved into the trough-shaped recesses 31 so that under the action of the springs 38 the frame 20 is swung around the axis of the shaft 44, whereby the advanced lace points come into the lace transferring position.

If the shifting of the arms I9 into the position G (Fig. 3) is continued the guide rollers 35 leave the troughshaped recess 31 and run upon the portion of the race 36 situated in front of the recess 31. The frame 20 hereby again is swung around the axis of the shaft 44 so that the lace points 9 come into the tickling off position (Fig. 5).

If the double-armed levers are returned again into their positionof rest by the cam device the springs 28 connected to the arms I9 draw the frame 20 back into its position of rest. By the inclined surface 3| of the safety rail 30 abutting against the inclined surface of the releasing portions 33, the leaf spring together with the safety rail is pressed upwardly and held again in the lifted position by the releasing portion 33 so that the safety rail 30 releases the projections 8 of the lace points and the rail I 8 then may return again the advanced lace point into their position of rest (Fig. 1). Y

4. A'flat rib knitting machine comprisingla ,;-row of needles, lace points, wrap guides and a It is evident that the movements for taking up and taking oif loops also may be effected by lifting and lowering the entire jacquard mechanism. During the vertical movement of the jacquard roller 40 or movement in the direction as is indicated by the arrow 1/ in Fi 3 it may also be rotated wherele the require jacquard card carried thereby maybe selected adjusted and the perforations of the so adjusted: or selected card placed in their proper positions.

What I claim is:' v

1. A flat rib knitting machine comprising a row of needles, lace points, ajacquard roller forming part of a jacquard mechanism mounted and actuated for performing a selecting movements towards said lace points, and a frame carrying said lace points movably mounted on said jacquard mechanism. e

2. A flat rib. knitting machine comprising a row of needles, lace points, wrap guides, a jacquard roller forming part of a jacquard mechanism adapted to be moved in various vertical positions in a direction towards the wrap guides and said lace points respectively and at right angles for selectively acting upon said wrap guides and said lace points only, a frame carrying said lace points movably mounted in said jacquard mechanism, a shaft carried by the rear portion of said frame having guides pivotally mounted thereon, and a second frame slidably arranged in said guides and having guides of which said lace point are individually movable.

3. A fiat rib knitting machine-comprising a row of needles, lace points, wrap guides, a jacquard roller forming part of a jacquard mechanism adapted to be moved in various vertical positions in a direction towards said wrap guides and said lace points respectively and at right angles to these for the purpose of selectively acting upon said wrap guides and said lace points only, a frame carrying said lace points movably mounted in said jacquard mechanism, a shaft carried by the rear portion of said frame, guides pivotally mounted on aid shaft, a second frame carried by said guides and having guides in which said lace points are individually movable, and jacquard 'c'quard roller. forming part'of a jacquard mechanism adapted to be moved in various vertical positions-in a direction towards said wrap guides and said lace points respectively and at right angles to these for the purpose of selectively act-' ing upon said wrap guides or said lace points only,

a frame carrying said lace points movably mounted on said jacquard mechanism, a shaft supported e by the rear portion of said frame upon which guides are pivotally arranged, a second frame carried by said guideshaving guides in which said lace points are individuallymovable, and means for adjusting said second frame carrying said lace points. 7 I

5. A fiat rib knitting machine as set forth in claim 4, in which a double-armed lever is mounted for acting upon arms on which said frame is mounted. I 4

6. A fiat 'rib knitting machine as set forth in claim 4, in which said second frame is by means of a downwardly inclined arm carrying a guide roller guided upon a race of said frame carrying cards carried by said jacquard mechanism wheresaid lace point guides and provided with a troughshaped recess.

'7. A flat rib knitting machine comprising a row of needles, lace points, wrap guides and a jacquard roller forming part of a jacquard mechanism adapted to be moved in various vertical positions in adirection towards said wrap guides and said lace points respectively and'at right angles to'these for the purpose of selectively acting upon said wrap guides or said lace points only, a frame carrying said. lace points movably mounted on said jacquard mechanism, a, shaft supported by the rear portion of said frame upon which guides are pivotally arranged, a second frame carried by said pivotally arranged guides having guides in which said lace points are individually movable, a spring-actuated safety rail adapted at times toengage said lace points for limiting their movement within the guides therefor, a releasing member for moving said safety rail out of engagement with said lace points, actuating arm mounted in said second frame, a double-armed lever for moving said arms in one direction, and spring-actuated means for moving said arms in an opposite direction.

JOHANNES LORENZ.

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