US1373358A - Knitting-machine - Google Patents

Description

R. W. SCOTT.

KNITTING MACHINE.

APPLICATION FILED MAR. 4, 1920.

1,8?3,358 Patented Mar. 29, 1921.

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certain new and useful Improvements in Knitting-Machines, of which the following is a specification.

My invention relates to rotary knitting machines employing spring beard needles or other needles of the latchless type, by which term I mean to exclude needles employing the usual pivoted latches and to include needles employing slides in connection with the hooks of the needles. For example, British Patent 3774: of 1880 illustrates several forms of lmitting needles with. slides.

In knitting machines, employing beard needles or other latchless needles, it is quite difficult to secure the feeding of the yarns so as to be surely engaged by the hooks of the needles. My invention consists inproviding means whereby this difficulty is overcome. 7

In the accompanying drawings Figure 1 is a sectional elevation of sufficient of a rotary knitting machine to illustrate my invention; r

Fig. 2 is an end view, looking at the left of the upper part of Fig. 1;

Fig. 3 is a view illustrating the relation of the yarn-feeding finger to another form of needle.

Referring to Fig. 1, I have there shown my invention as applied to a rotary knitting machine of the type in which pivoted yarn fingers are employed in any suitable manner, 8 being the throat plateon which the feeding ends of the yarn fingers -rest when in active position to supply yarn to the circle of needles.

The type of latchless needle N shown in this Fig. 1 is a spring beard needle which as is well known, requires special appliances and modes of operation or special locating of the feeding point in relation to the knitting point in order to get the yarn safely under the points of the beards. I accomplish the result successfully by combining with the latchless needle a particular construction and operation of yarn feeding finger. In the drawingI have shown only two pivoted fingers F, F but as many such fingers may be employed as occasion may re quire. In the first place the feeding end of niafin ndn n r eh 4, 1920.

' the extreme forward end Spec a n. tt iat n Patented Mar. 29,1921.

' Serial-No. 363,134.

the yarn finger is beveled offat f to give a reduced forward end, and the hole on through c which the yarn is threaddQhas its outlet at of the yarnfinger adjacent the needles. I

Each of these yarn fingers is so pivoted to the frame on which it is mounted that the yarn finger will move in a plane parallel with the length of the needle and may have a compound movement, namely, a pivoting movement to bring its feeding end into and out of active position and also a bodily movement toward and from the circle of needles. 7

For this purpose the fingers are slottedat '6 where they are pivoted upon a cross-pin 5, which may be mounted in the arch 4: forming a part of the latch ring 10 or other suitable part of the frame.

Spiral springs 13 connected at one end to the cross bar it and at the other end to hooks 12 on the yarn. fingers F, F tend to draw the yarn fingers bodily away from the circle of needles as far as the slots 6 will permit, and also tend to draw the yarn feeding ends of the fingersto the active or feeding oosition as shown in the case of the finger F in Fig. 1. The elevation of the fingers to the inactive position as shown in the case of the yarn fingers F is accomplished by suitable thrust bars 20 actuated at the appropriate times by a cam cylinder as described in my Patent No. 1,238,052, dated August 21, 1917, for example. y

The yarn fingers have their extreme rear ends beveled or cammed at 7, and in an overhanging bracket 16, which may be secured to the arch 4, are provided adjustable bearing screws 17, one in line with each yarn finger.

- yarn finger down from the position F to the active position F, the beveled or cammed rear end of the yarn finger will strike the bearing screw 17 with the result that after, the forward end of the finger has passed the tops of the needles in the downward swinging movement of the finger, that forward end will be thrust outwardly toward the needle shanks and under the hooks of the needles, The reducing of the end of the yarn finger, as shown, permits this thrusting of the finger end and of the yarn which comes out of the forward end thereof, di rectly under the hooks of the needles. Accordingly the taking of the yarn by the needle hooks is thus assured without the use of any other special appliances and without undue separation between the feeding point and the knitting point'in the circleof needles. V y

In Fig. 3 I have indicated a type of needle N wherein a slide it takes the place of the ordinary pivoted latch. It will be seen that by reason of the backward bend given to the needle adjacent the hook, it would be extremely difficult to feed the yarn to the hook.

, without the use oftheyarn fingerwith' reduced-end delivering the yarn at its outer end and means to thrustthat outer end and;

the yarn under the hook, 5

I claim asmy invention? I i A knitting machine comprising knittlng needles of other than the pivoted latch type in combination with a pivoted yarn finger.

pivoted to move in a plane parallel with the length of'the needles and having a reduced outer end delivering the yarn at such outer end in combination With means to thrust ROBERT w. soorr."

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