US1867704A - Device on flat knitting machines for producing goods patterned by reenforcement - Google Patents

Description

July 19, 1932.

DEVICE ON FLAT KNITTING MACHINES FOR PRODUCING P. LlEBERKl NECHT 1,867,704

GOODS PATTERNED BY REENFORCEMENT Filed Oct. 29, 1930 2 'E i I n K3. /77/ r45 n IS I I I l T. [:1 H Ii: W g l n m u u:

H E r m l H i 5 i V Z l c o o a OX5 i c a 46 a c 0 o a a I c e e 6 I I d, d, 2

, W MW Patented July 19, 1932 UNITED STATES PATENT OFFICE PAUL LIEBERKNECH T, OF EINSIEDEL, NEAR CHEMNITZ, GERMANY, ASSIGNOR OF ONE HkLF TO MASCHINENFAIBRIK-EINSIEDEL, GESELLSCHAFT MIT SCHRAINK'IER HA1- TUNG, F EINSIEDEL, NEAR CHEMNITZ, GERMANY DEVICE ON FLAT KNITTING MACHINES FOR rnonucme GOODS ra'rrnnnnn 'BY nnnnroncnnnnr Application filed October 29, 1930, S eria1 No.491,899, and in Germany May 16, 1930.

At present the manner in which the production on flat knitting machines of goods patterned by reenforcement takes place is that the guide of the reenforcing thread abuts 6 during knitting against the pins mounted on a rotary but otherwise stationary drum. The length of this guide path prelimited by one of these pins corresponds with the length of the reenforcing rowof stitches produced in 10 the goods.- Owing to the difi'erent lengths of the pins, the reenforcement stitch rows mayi be made any length so that any pattern is produced. By this patterning device however patterning can take place only in the width of the goods which lies between the longest and shortest of the pattern pins which are variable only in a vertical direction. Therefore the possible number of patterns is limited. This'limited range of patterns is howeveronly possible when, in accordance with the also known patterning device for reenforcement patterns, such stops are. employed for the thread guide rods as are rotatably mounted on a screw-threaded spindle and are formed as nuts and are movable in a lateral direction. I

The object of this invention is to increase the number of possible patterns whilst employing the hereinbefore mentioned and 80 known pattern pins.

' According to theinvention, a disc carrying the pattern'pins and rotatable with the same is mounted to be movable in a lateral direction. Thereby the pattern pins can let the reenforcement thread guide act on the goods at any desired place. By the aid of this improvement hitherto impossible reenforcement patterns can be formed.

For example it is possible to produce a three-part reenforcement pattern in such a way that its first part is composed of two right angled triangles, its second part is com-- posed of two obtuse angled triangles extending towards each other, and its third-part is composed of triangles of the first named kind, whereby the perpendicularly running lines of the last named pattern part extend in contrary direction to those of the triangles of the first part; A pattern of this kind is impossible to produce with the pinless but slidable stop, because the displacement of the stop for the stated pattern is twice as great as at the other side of the pattern and therefore several spindles with diflerent lifts would be necessary. Even then one would be limited to the production of the one pattern. Even with a rotatable but otherwise stationary pattern drum, the pattern possible with the device according to the present invention could be obtained only if the pattern drum were made of exceptionally large size which excludes the use of such drums in practice.

Naturally the device suitable for carrying out this new idea can take very difierent t forms. According to the invention, rotatable discs are particularly suitable therefor which are fitted with pattern pins and are arranged on a spindle which is parallel to the movement o'fthe thread guide, the discs being displaced in a lateral directiontogether with all ofthe similarly arranged pattern drums, by turning the spindle. In place of such patterh discs, pattern discs without pattern pins can be employed, the small surface of which serves as a stop, these discs turning in the long direction of the machine and having their axes arranged displaceable in the same direction. a In the accompanying drawing a drum fitted with pattern pins to produce the hereinbefore stated pattern is illustrated as a constructional example.

Figure 1 shows in plan the hereinbefore mentioned patterning device for a cotton machine.

Figure 2 shows in end view a feed device for the pattern drum shown in Figure 1.

Figure 3 shows the new reenforcement pattern produced by the shown device.

Figure 4 is a fregmentary plan view and illustrates a construction modification.

Referring to Figs. 1 and 2 of the drawing, the housing a or (1 serves in known manner also as a bearing for the drums e which flank them at both sides and are provided with pins for the stops 0 of .the reenforcement thread guides (1, cl. The drums e arefrotated intermittently by a ratchet pawl g actuated 4 'from a cam f and thereby always bring an- 1 other of the pins 6 into the paths of the thread guide stops 0. The housing a has two eyes it and these hang on a smooth rod-2'. This rod and a screw-threaded spindle m which is parallel with the thread guide rods k are mounted in stationary brackets n, the spindle m being turnable therein. The spindle m has a periodically movable wheel o and has aright hand thread in the vicinity of the left hand housing a and a left hand thread in the vicinity of the right hand housing a. The rotation of the spindle m produced by rotation of the wheel 0 effects a displacement of the housing nuts a, a parallel to the movement of the thread guides d, d and inwards or outwards.

In order to produce the reenforcement pattern shown in Figure 3 and referred to in the earlier part of this specification, one proceeds as follows :A change in the width p of the reenforcement pattern composed of the three parts 1, 1', 2, 2' and 3, 3 takes place only after four rows. Furthermore two of the pattern drums e, e fitted with pattern pins 6 belong to this pattern formation. On forming the first pattern part 1, 1, in the first four rows, the stops 0 of the thread guide rods is abut against the pattern pins 1) provided at the right and left of the pattern drums e, 6. After the fourth row of stitches is ended and before the commencement of the fifth row, a

turning of the pattern drums e, e takes place to such an extent that the succeeding pins arrive in the path of the-stops 0. Whilst the h right hand pin 6 of the left hand drum 6 and the left hand pin 6 of the right hand drum e, which are used only, are maintained two stitch widths larger in accordance with the second notch 4, and thereby the stops 0 abutting against them describe a path which is two stitch widths shorter, the left hand pin bf of the left hand drum e and the right hand pin Z)" of the right hand drum e now coming into action are exactly the same size as those pins 6 of both drums which were previously in action. Up to the notch 16 the I intermittent rotation of the pair of pattern drums e, e continues. whereby the pins b coming successively into action increase in steps whilst the pins I)", retain always the same length as the first the outer edges of the first part 1, 1 of this pattern have to extend slantingly inwards, Whilst the inner edges of the said part each forms a perpendicularly extending line 9.

The right-angled triangles: 1, 1 thus created could be formed with the aid of a pattern drum which rotates only and is not displaced axially. The axial displacement however is necessary when the obtuse-angled triangles of the second part 2, g of the attern have to be created. For'this purpose pins 6, b, b" are employed arranged the same as for the formation of'the part 1, '1'. In addition when the drums e, e are turned they are simultaneouspin 6. Accordingly I ly displaced towards each other to the extent of two stitch widths. Consequently the stops c which are limited movement by the successively acting and successively longer pins 6 have paths which are reduced on the outer side by 4 stitch widths and are increased on the inner side by 2 stitch widths after each fourth row of stitches, assuming that the difference in length between the wedge-like rising pins 6 corresponds with two needle divisions.

The second part 2, 2' of the pattern ends on the formation ofthe 128th row of stitches. The following part 3, 3 of the pattern is also effected by turning the pattern drums e, e andmovement of the same in the longitudinal direction of the machine. This longitudinal movement however takes place in directions away from eachother, and therefore outwards.

In the construction shown in Figure 4,

the right hand pattern disc e hasa small or narrow, side surface 6 which is substituted for the'pins b of the right hand disc e of- Figure 1 and which serves as the abutment for the right hand stop 0. The surface I) is stepped and therefore is capable'of exercising the same effect as the pins of varied lengths.

I claim 1. In a device on flat knitting machines for the production of goods patterned by reenforcement by means of pattern drums each aving several stops for the reenforcement thread guides, means for rotating the pattern drums'in combination with means for moving the pattern drums longitudinally of the machine and causing the drums to act on the reenforcement thread guides at any place along the arrangement of the needles of the machine.

2. In a device according to claim 1, wherein the pattern drums furnished with pattern pins are provided on a spindle which is parallel to the movement of the reenforcement thread guides and when rotated causes all similarly furnished drums to move in lateral direction.

- 3. In a device according to claim 1, wherein the narrow surfaces of the drums serve as stops and the drums rotate in the longitudinal direction of the machine whilst the axes of the drums are displacable in the said longitudinal direction.

In testimony whereof, I, have signed my name to this specification at resden, Germany this 16th d'a of October 1930.

PA LIEBERKNECHT.

in their longitudinal

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