US2085656A - Auxiliary presser for flat knitting machines - Google Patents

Description

w. HEINITZ 2,085,656

AUXILIARY PRESSER FOR FLAT KNITTING MACHINES June 29, 1937.

Filed July 24, 1956 50 that alteration of the number of the needles,

g Patented June 29, 1937 A XILIARY DRESSER FOR FLAT KNITTING MACHINES Waldemar Heinitz, Chemnitz, Germany, assignor to Schubert & Salzer Maschinenfabrik Aktiengesellschaft, Chemnitz, G

Application July 24. 1936, Serial N 92,446 .In Germany November 5, 1935 1 Claim. (01. (ac-9s) The present invention relates to'an auxiliary The auxiliary pressers which in a well known presser for flat knitting machines. 'manner'are provided in the width .of the heel For the manufacture of stockings ina single. portions at both sides in each division are, dur-' operation on net knitting machines, the latter ing normal operation of the knitting machine, are provided with auxiliary pressers; Th'es'e auxplacedbelow the common presser, so that, in 8. ch of which manner known in the art, all frame needles may be pressed. For the manufacture of the heel portions, the two auxiliary pressers are lifted in a well known manner and brought in front of the presser edge. Simultaneously with this shifting of the auxiliary pressers, the movement of the frame needle bar is changed, so that the frame needles may be pressed by these lifted auxiliary pressers only, whereas the frame needles, lyingv b to produce the instep portion of the stocking, are not pressed for want of a suitable pressing basis. In the accompanying drawing an auxiliary presser according to the inventionis shown by way of example.

In this drawing: Fig. 1 is a broken away front NToF -uc be actuated by them. The frame needles, serving to produce the instep portion of the stocking, are. placed in suspense during the manufacture of the heel portions, so-that at this placeof the division an auxiliary presser is not required.

Auxiliary pressers are known in the art which at both sides of each division of the knitting mawidth necessary for the elevation of a division of a knitting machine showing the device for adjustingthe two auxiliarymressers,

Fig. 2 shows a side elevation partly in section of the auxiliary presser illustrating also the means for lifting same,

- Fig. 3 is a part sectional side elevation similar to Fig; 2 showing the individual parts in another position,

Figs. 4 and 5 illustrate sections on the lines 4-1 in Fig. 6 and 5-5 in Fig; 7 respectively, showing the guide arms of the auxiliary pressers in two differentoperating positions,

Figs. 6 and 7 are detail plan views, and

Figs. 8 and!) show detail views of the supports carrying the auxiliary press instruments.

The jack sinker hearing I, carrying in a well known manner the jack sinkers 2, is provided 'with the usual presser edge 3 and it is obvious, an adjustment does not only require a rather long time, but may easily be a source of faults. Furthermore, a selecting device for individually movable press instruments has already become known which also allows the instep portion ments arranged in the middle portion of each 5 division are lifted in the width in which the frame needles, adapted to knit the instep portion of the stocking,v are to be placed insuspense, so

with which the rather difficult and complicated and, frame ne dles 4 may cooperate. moreover, the'man'ufacture of this construction I Mounted upon a shaft 5, rotatably journalled "r q ir v ly hi h costs. The use of this in the frame of the knitting machine not shown device also does not exclude faults. in the drawing, are lever arms 6 which are dis- All these drawbacks f a s ments, causing tributed all over the length of the knitting maloss of'timeand tending to introduce faults, are chine and carry guide arms 1. In these guide obviated by the auxiliary presser forming the arms 1 two bars 8 and 9, also extending all over Moreover, the

the length of the knitting machine, are mounted great advantage.

which are adapted to be shifted in the longitudinal direction.

novel auxiliary presser has the adapted to produce the instep portion and to be of the machine a support ll, carrying press inplaced in suspense, may. from a single place and struments I, is fixed to the bar I by'screws I 2 in a very simple manner, he eflected uniformly and I: (Fig. 8 while a support ll, carrying andsimultaneously at any desired number of dipress instruments I5 is fixed to the bar 8 by 5 visions.

etween the tWO auxiliary pressers and serving 8 and 9 is formed as a toothed rack l8 and I9 respectively and a toothed wheel 20 mounted on a bolt 2| permanently engages with both racks I8 and IS. The ends of the bolt 2| are rotatably 5 mounted in bearing plates 22 provided at both sides of the bars 8 and 3 and one of which only may be seen in Fig. 1, as the other is hidden by same. Both bearing plates 22 are connected together by pins 23 and 24 extending through 10 slots 25 and 25 respectively formed in the bars 8 and 9 respectively. Fixed upon the hub 21 of the toothed wheel 28 is a hand lever 28. bar 8 carries a pointer 29 adapted to be moved across a scale 30 fixed on the frame of the 15 knitting machine not shown in the drawing.

The upper end of each guide arm 1 is formed as a pin 3|. An auxiliary bar 32 which may longitudinally be shifted in the frame of the knitting machine, for instance by the well known patterning device not shown .in the drawing,

carries projections 33 each provided with an inclined surface 34. In the range of each guide arm I a projection 33 is provided at the bar 32. The pins 3| are pressed against the auxiliary 25 bar 32 by means of tension springs 35 the ends of which are connected to the associated guide arm 1 and the hub of the corresponding lever arm 6 respectively.

Mounted upon the shaft is a lever 36 the free 30 end of which is forked and carries a roller 31 adapted to be shifted on its bolt 38 by means of a fork 39 one prong of which only is diagrammatically shown in -.Fig. 2. A tension spring 40, connected to the lever 36 and a fixed portion of 35 the machine frame, permanently tends to draw the roller 31 against a circular disc 4| or a cam 42 fixed on the cam shaft 43, depending on the position of the fork 39. Each guide arm carries a projection 44 having an inclined surface 45. Corresponding counter-projections 46 pro- .vided with an inclined surface 41 are fixed to the jack sinker bearing The operation of the new device is as follows:

During the manufacture of ordinary rows of loops the roller 31 carried by the lever 36 runs on the circular disc 4| fixed upon the cam shaft 43 at one side of the cam 42. During this operation, the press instruments I, I5 occupy the position shown in Fig. 2, that is to say, they lie below the presser edge 3 of the jack sinker bearing l. The inclined surfaces 45 of the projections 44 bear against the inclined surfaces 41 of the counter-projections 4B. The frame needles 4 are pressed directly at the presser edge 3.

An alteration of the position of the supports |8 and I4 carrying the auxiliary press instruments II and I5 is effected in the following manner:

If the auxiliary bar 32 is shifted to the right inFig. 1, the inclined surfaces 34 of the projections 33 are passed along the pins 3| of the guide arms 1 (Fig. 6) which thereby come into engagement with the projections 33 as shown in Fig. '7. The guide arms 1 together with the bars 8, 9 and the supports l8 and I4 for the press instruments H and |5v respectively are oscillated. Hereby the press instruments H and I5 are moved out of the range of the knocking over comb 48, so that a lateral displacement of the instruments II and I5 may be effected.

By oscillating the lever 28 the bars 8 and 9 The carrying the supports l0 and I4 for the auxiliary press instruments II and I5 respectively may be adjusted by means of the toothed wheel 20 engaging the racks l8 and I9 at the ends of the bars 8 and 9 respectively. Hereby an alteration of the width of the instep portion, lying between the two auxiliary pressers, is effected. The pointer 23 indicates upon the scale 38 the adjustment made, so that the adjustment may be made in'such a manner, that the number bf frame needles 4, required to knit the instep portion, may be placed in suspense.

After adjustment by the lever 28, the auxiliary bar 32 is returned again, so that the auxiliary pressers, under the action of the springs 35, occupy again their original position shown in Fig. 2 By shifting the roller 31 into the path of the cam 42, the auxiliary pressers may be lifted in a manner known in the art. By the cooperation of the inclined surfaces 45 and 41, the guide arms 1 are moved away from the jack sinker hearing I, so that the heads of the auxiliary press instruments I I and I5 are placed in front of the presser edge 3 and, therefore, the frame needles are pressed by the auxiliary pressers.

'As auxiliary pressers for any desired number of divisions of a knitting machine are carried by the bars 8 and 9, all auxiliary pressers may be so adjusted, that the same number of frame needles 4, adapted to knit the instep portion of a stocking, is uniformly and simultaneously placed in suspense at all divisions.

What I claim is:

An auxiliary presser for flat knitting machines, comprising in combination a jack sinker bearing, a cam shaft arranged below said bearing, a circular disc and a cam fixed on said cam shaft, a shaft also arranged below said bearing and extending in parallel to said cam shaft, a spring actuated lever fixed on said shaft, a roller adjustably carried by said spring actuated lever, a slidably arranged fork engaging said roller and adapted to bring said roller in the path of said circular disc and said cam respectively, a plurality of levers also fixed on said shaft, guide arms pivoted to the free ends of said levers, tension springs urging said guide arms towards said shaft, :3. projection having an inclined surface at each of said guide arms, counter-projections having an inclined surface provided at said jack sinker bearing, one opposite each of said projections on said guide arms, an auxiliary bar shiftably arranged in front of said jack sinker bearing, a projection having an inclined surface provided at said auxiliary bar opposite each of said guide arms, a pin-like member formed at the free end of each guide arm, said pin-like members bearing against said auxiliary bar and adapted to be shifted by the inclined surfaces of said projections onsaid auxiliary bar, two bars shiftably mounted in said guide arms, a rack formed at one end of each of said bars, a toothed wheel engaging both racks at said bars, a frame carrying said toothed wheel, pins fixed to said frame and extending through elongated slots in said racks, a hand lever fixed to the hub of said toothed wheel, a pointer fixed to one of said racks and cooperating with a scale to indicate the position of said bars, supports fixed to said bars, one on each bar in each division, and auxiliary press instruments carried by said supports.

I WOLDEMAR HEINITZ.

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