US1899838A - Knitting machine - Google Patents

Description

1933. G. VOLLENWEIDER 1,899,838

KNITTING MACHINE Filed July 50, 1950 5 Sheets-Sheet l Feb.- 28, 1933.

G. VOLLENWEIDER KNITTING MACHINE 5 Sheets-Sheet 2 Filed July 30, 1930 Feb. 28, 1933. v

G. VOLLENWEIDER 1,899,838

KNITTING MACHINE 1 a Filed July 30, 1950 5 Sheets-Sheet 5 Feb, 28, 1933. G. VOLLENWEIDER 1,899,838

KNITTING MACHINE Filed July 30, 1930 5 Sheets-Sheet 4 1933- e. VOLLENWEIDER 1,899,838

KNITTING MACHINE Filed July 30, 1930 5 Sheets-Sheet 5 Patented Feb. 28, 1933 entree STATES PATENT QFF1E* anon-ens VOLLENWEIDER,

xin'r'rme MACHINE or coLoMBns, FRANCE Application filed July 30, 1930, Serial No. 471,841, and in France July 30, 1929 The present invention has for its object a process for manufacturing fancy-figured loop-work on the knitting machine, the characteristic feature residing in the fact tiat the production of the figures (designs), of the colors and the kind of loops is secured without the use of the jacquard-card by means of the needles made independent the one from the otherduring their rising movement. V

The apparatus for performing the process, which can be used as an additional device on flat knit-ting machines, is characterized by the feature that it comprises sliding bars lodged within a guiding bed, which can be displaced in any desired choice by means of oscillating levers actuated by cam plates.

On the drawings:

Fig. 1 is a vertical longitudinal section of the device, placed for instance on the rear frame of a hand-knitting machine;

Fig. 2 is a side view of the apparatus in combination with'the needle-guiding-bed;

Fig. 3 represents the front view, an

Fig. 4 the'plan of a support for the operating cams actuated by a guide;

Fig. 5 shows respectively the side and front view of an oscillating lever,

Fig. 6 is a front view of the apparatus, wherein the oscillating levers and the cams have been omitted;

Fig. 7 is a plan view of the bed placed in front of the ordinary needle guiding plate.

8 In order to render comprehensible the additional apparatus, it has been represented, according to Fig. 1, in combination with an ordinaryknitting machine, wherein it has been placed on the rear framework.

The additional apparatus allows the manufacture on a fiat knitting machine, in addition to the ordinary work (tricot, etc.) fancyfigured work, without the help of the known jacquard-card, in any color and having any kind of loops. It is hence possible to change instantaneously from the tricot type to the ordinary loops or fromthe rib, called 2-2 to that called 1 -1, and so on. The ordinary knitting machine becomes thus a uni versal one.

No change 0 i 5 becomes necessary in the ordinary knitting machine, except that the usual rising cam (or cams) for the needles is dispensed with on the si which the new apparatus is mounted.-

also be placed .5 7

clear that the apparatus on the front side.

According to the ing plate 4 is fixed by de of the. frame on It is drawings a grooved guidmeans of arms 21, 3 on the needle guiding bed 1. Theabove mencontinuation of the needle grooves and serve to lodge the needle tioned grooves form the jacks 5. ends the standards 6,

On the plate 4 are fixed on both holding between them the are shaped slotted guiding bar 9 for the oscillating levers 8 axis 8 suspended on free end of the latter whichswing round the 5..- the said standards. The

have extending arms9' with eyes wherein rotate the axles 9" of cylinders ll, 11 receive, to guide and to representing the a design under end having whereof is rolled 10 provided with a slotted casing 10. sheet 10 is moved stepwise in the directi IDOVB for its object to the sheet 10 of any nature, the

on the cylinder The on of the arrows and wound on the last cylinder 11 75. (Fig. 1). The bed 12 supporting the threadgiver serves, to receive the s carried by the ordinary knitting-machine. The carriage comprises 14, while the usual moved vention, replaced by two ca described'herein.

lide 13 comprises tional apparatus The upright part of the s two hinges 16 on the ascension a guiding plate 19?) and which hand or automatically. the rear studs 00 of the made of two parts.

to be altered, owing ing effect of the rear par with and, according t cams 17, 18 are which can occupy different angu carriage 23 lide 18 whichis of the rear plate of the the usual falling cams ascension cams are re- 0 the present inms of the addiaxles of which the the knitting wor ts 17, 18 is modifie mounted and lar positions. support is This enables the by the oscillation of the end parts 17a, 18a in the direction of the arrows.

The said slide 19 can occupy the different positions designated by the numerals 1, 2, 3 and 4 (in the scale, Fig. 3) so that it becomes possible to put into the working position, at will, the upper or the under or both hinge connected cams. in the fourth position they are completely disengaged.

The oscillating levers 8 are each made of two parts whereof the upper part 8a, pro

vided with an abutment 22, can be displaced within the under forkshaped part and occupy two difierent positions. It is clear that the number of positions of tie abutment can be increased. The under end of the mobile lever part is at this end provided with a spring which snaps in each position into a groove of the other part and hence determines direction (dotted lines,

- cot) without designs,

the position of the abutment 22. Thefree end of the part 8a terminates in an index pointer 27.

The operation of the additional apparatus is as follows: At the to and fro movement of the carriage 23 of the machine, the sliding support 13 and all its parts are displaced in the same manner, i. e. also the ascension cams 17, 18 which cooperate with the abutments 22 of the levers 8a, which can, as mentioned, occupy two different positions (Figs. 2 and 5). When the upper cam plate 18, 18a is in its working position (Figs. 1', 2), wherein it is parallel to the guiding plate 4, it acts on all levers 8, 8a, the abutments 22 of which are in the upper position. On the other side the under cam plate 17, 17a acts in its working position (Fig. 1) only on these levers 8, the abutments of which occupy the lowest position (Figs. 2, 5, full lines). During the sliding displacement of the ascension cams, these levers 8, 8a oscillate in the outward Figs. 1 and 2), the abutments 22 whereof come into touch with the ascension cams 18 or 17. These .cams move the oscillating levers laterally and make them oscillate towards the sheet 10. In this movement they are guided by the slotted bar 9. During their oscillation the inferior end of the levers 8 displace the needle jacks 5 upward and hence also the needles. The displacement of each needle is independent of-the others, so that it is possible to make any design in any color or combination of colors directly on the knitting work without the use of the jacquard-card.

When both studs 00 of the cam plates 17, 18 are in the position 1 3) and when the abutments 22 of all levers 8a occupy the highest or the lowest, or a mingled position ig. 1), i. e'. when the two cams 17, 18 are in the parallel position,'so that all the levers 8 can oscillate under their influence, the ap paratus makes ordinary knitting work (tribecause the two cams act then in the same way as the ascension cams which have been removed from the rear bed of the knitting machine, as mentioned herein.

A similar effect is obtained, when the studs 00 are in the position 2 and when the cams 17 18 are positioned as shown in Fig. 2.

But when itis desired to make for example longitudinally ribboned (lengthwise lines alternating in color) work in two different colors and this for example of the smallest size, the part 8a 'of each second lever 8 is pushed down by hand or otherwise, within the forked part so that the abutment'22 occupies the position shown in full lines (Fig. 5). The lever arms 8a, not pushed down, occupy the position shown indottedlines. Now the upper cam 18, 18a is placed in the working position (Fig. 2) by so displacing the slide 19 that the stud m is placed beneath the index 2 (Fig. 3). The needles on the former part of the frame of the knittingmachine work in the ordinary known way. If the carriage 23 is for instance pushed from its outermost left place into the outermost right place of the machine,the threadguiding arm (not shown) conveying and entering the thread giving to the work the general color, all those oscillating levers 8, 8a, 27 oscillate clockwise, the abutments 22 whereof are in the raised position.

When the carriage 23 arrives in the outermost right positionyone displaces the slide 19 in such manner that the stud m is placed beneath the index line 3, whereby the in ferior ascension cam 17, 17a is positioned in the working position (Fig. 1). The cam 18, 18a is made inoperative, because it is inclined in the outward direction and occupies a position which is not symmetric to that of the under cam plate 17 17a Fig. 2). The cam 18, 18a therefore cannot come into touch with any of the levers 8, 8a, 22. During this change of the position of the cams, there was also alternated the thread guiding device, which is well known. If new the carriage 23 is again moved back to the left side of the machine, the cam 17, 17a comes into contact with the abutments of these levers, the abutment 22 whereof occupies the lowest position, shown in full lines (Fig. 5). There are now only these lovers 8, 8a, 22 which oscillate in the above described manner. If this function is repeated again and again, there is produced a design in the form of straight lines of two different colorshaving no interruption. change of the position of the cams 17*18 is not made by hand, but automatically in any known manner.

The backward moving of the levers 8, 8a, 22 into the original, normal position is effected by means of the respective needles under the influence of the known descent cams 14 of the machine.

At the position of the stud w beneath the It is clear that practically the automatic change of the cam number 2, the upper cam plate 18, 18a is in the working position, while the cam plate 17, 17a, is inoperative (Fig. 2). If the carriage 23 is driven, as mentioned, from the starting position to the right hand, the ascension cam plate 18, 18a comes into contact with all the levers, the abutment 22 whereof is in the raised position and makes them oscillate clockwise (Figs. 1 and 2) so that the appertaining needles are operated. As soon as the cam plates 17 or 18 leave the abutments 22, the descent cam plates 14 become operative so that the levers 8 and the push bolts 5 are pulled back. When the carriage arrives in the right hand position, the position of the cam plates changes automatically, i. e. the cam 18, 180; oscillates in the upper direction leaving thus the operative position; the plate 17, 17 a on the contrary comes into action and comes into touch with the abutments 22, formerly pressed down, as soon as the carriage 23 starts to the left side. Now takes place the introduction of the thread which produces the design. The

plate position is effected by the automatically working slide 19 which directs the stud w alternately from 2 to 3 and from 3 to 2 and so on, as soon as the carriage arrives at the outermost right position.

The rear thread guiding arm introduces the ground-thread.

In order to make any desired irregular pattern or design, one changes the position of the abutments 22 during the working, taking into consideration that the needles which produce the ground of the knitting work are operated when the abutment 22 is raised and that the needles which make the design are operated by means of the abutment 22 which occupies the lowest position (or inversely).

It is clear that the levers 8, 8a can also be constructed in such a way that the abutments occupy more than two intermediate positions, so that it is rendered possible to use acorresponding number of colored threads which produce then different colors on the same range of loops.

As a pattern is preferably used, a sheet of paper divided into squares wherein are placed points giving the division or distance of the needles. In order to find immediately the number of abutments 22 to be pressed down, one can use an auxiliary device comprising in its most simple form, a thread Z placed horizontally on the cylinder 11 According to Fig. 6 the thread Z covers for instance four points of the pattern sheet. The abutments 22 of the four levers 8 corresponding to these four points (crosses) must thus be regulated correspondingly. This regulating operation must be performed each time before the carriage 23 starts from left to right. If the carriage is again returned to the left side, the pattern sheet advances automatically according to vertical division or range. After the roller 11 i. e. the sheet of paper 10 has been advanced to the extentof'a range of v I which for instance are situated in another verticali'ange, as is thecase, for instance, in V check patterns, then all previously downpressed abutments 22must again be raised and those of the levers S must be pushed down which correspond with the new range. This is the underlying principle of the work ing action." Now when manufacturing pure checkpatterns, said raising of the abutments 22 can be brought about by displacing the regulating device or slide 19 in the left hand position of the carriage 23 before pushing said carriage again to the right, that is to say that one puts the part 00, standing on the index 2 into the position marked 3. stead of the guide thread 2, there can be used a toothed plate 24: (Fig. 1) the teeth of which, when advancing the pattern sheet, are always placed to agree with the respective corresponding points of the pattern shown in Fig. 6 so that it is possible to recognize immediately the abutments 22 which have to be displaced in height.

It is clear from the foregoing description,

that by the aid of cam levers 18, 17 made in two parts it is possible to simultaneously manufacture by adjusting the position of the abutments 22, different kinds of loops. It is moreover possible to manufacture in the most simple manner differently colored or multi-colored fabric composed of different kinds of loops.

. I claim:

I 1. Apparatus for manufacturing fancy figured multicolored loop work (tricot, etc.) on a a hand knitting machine, comprising a grooved bed, needle jacks in the grooves of said bed, oscillating levers for moving. said jacks and ascension cam plates for actuat ing said levers.

2. Apparatus according to claim 1 in which the oscillating levers are variable in length and the cam plates are variable as to their angular position.

3. Apparatus as claimed in claim 1 in which the levers each comprise a lower part having a forked end and an upper part slid able within the said forked end and provided with abutments and index points.

4. Apparatus according to claim 1 in which the cam plates for directing the oscillating levers are arranged to be displaced with reference to the horizontal plane.

5. Apparatus according to claim 1 in which the cam plates are each composed of two articulated port.

6. Apparatus accordingto claim 1 including a movable slide having slots and in which the cam plates are directed by means of studs engaging'said slots of said movable slide.

.7. Apparatus according to claim 1, including a movable slide having slots and in which the cam plates are directed by means of studs engaging said slots of said movable slide and the sliding plate, directing the cam plates, has convenient guide slots in order to allow its placement on the longitudinal guiding bar of the carriage of a knitting machine.

8. Apparatus according to claim 1 including in front of the oscillating levers cylinders adapted to receive, to guide and to advance a pattern sheet. r

In testimony whereof I have hereunto set my hand this 10th day of July A. D. 1930.

- GEORGES VOLLENWEIDER.

parts attached by hinges to a sup- 7 I

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