US2395822A - Knitting machine - Google Patents

Description

'r. s.- IHAIYHURST 2,395,822

KNITTING macairm March 5, 1946.

Filed April 13, 1944 18 Sheets-Sheet 1 INVENTOR Thamd; S.

A'ITOR Hayh urst Y March 5, 1946.

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' KNIITTING MACHINE,

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"nnonuvf T. s; MAYHURST J 2,395,822.

Patented Mar. s, 1946 uNiTEo STATE S- PATENT OFFICE KNITTING MACHINE Thomas S. Hayhurst, Belle Harbor, N. Y., assignor to Max Nydegger, Summit, N. J.

Application April 13, 1944, Serial No. 530,769

" 16 Claims. (01. .6663) .The present invention relates to an improvement in knitting machines. Objects of said invention have been to provide an improvement in decking mechanism for fiat links knitting machines; to provide decking devices which are adapted to operate effectively in automatic knit-' ting'machines of the links type; and to utilize an improved decker point construction which can be mounted and controlled to cooperate with a needle of the latch type in a manner to remove stitch loops therefrom an'ddeposit stitch loops thereon regardless of whether the latch is then ing control mechanisms for fashioning and for corresponding decker point carrier adjustment;

Figure 12, a transverse vertical section on the line l2|2 of Figure'll;

Figure 13, a transverse vertical section on the line |3-l3 of Figure 11; t

Figure 14, a transverse verticalsection on the line l4l4 of Figure 11 showing portions which control movement more particularly of the jack positioning or conditioning devices inwiden'ing and narrowing for fashioning; v

Figure 15, a transverse vertical section on the line "IS-I5 of Figure 11 showing portions which Figure 2, a plan view from the line 2-2 of Figure 1 showing portions of mechanisms positioned rearwardly and at the end of the machine shown in Figure 1;

Figure 3, a horizontal section'on the line 3-3 of Figure 1; a

4 Figure 4, a plan view, enlarged, oiv portions of Figure 2 and with parts removedto disclose de tails of devices connected with decking;

Figure 5,' a fragmentary view in vertical section on the linei-Sof Figure 4 and showing portions of thedecker and'racking control devices;

Figure 6, a fragmentary view partly in vertical section on the line 6-6 of Figure 4 and showing portions of the decker and racking control devz es; V v

Figure 7, a fragmentary view partly in vertical section on the line I1 of Figure 4 and showing portions of the decker and racking control devices;

Figure 8, a fragmentary view in vertical section on the line 88 of Figure 6;

Figure 9, a fragmentary view on the line 9-9 of Figure 3 showing the control link associated with the automatic decker'control mechanism; Figure 10, a fragmentary view on the line Ill-i 0 of Figure 3 showing the control link associated with the automatic widening and narrowing control devices employed in fashioning; 1 Figure 11, 'an enlarged fragmentary view in plan of a portion of Figure 3 with parts broken away to show portions of widening and narrowcontrol movement more particularly of decking, rack skip, and thread change devices irewidening and narrowing for fashioning;

Figure 16, a transverse vertical section, enlarged, on the line |6--l6 of Figure 3;

Figure 17, an enlarged fragmentary transverse vertical section across, the needle bed portion including the stitch cams and associated parts;

Figure .18, a portion of Figure 16 further enlarged to more clearly show parts of needle jack conditioning devices; i v

Figure 19, a view partly in longitudinal vertical section on the line Ill-49 of Figure 18 and with portions broken away and with parts removed; Figure 20, a horizontal section on enlarged scale on the line 20-20 of Figure 18;

Figure 21, a horizontal section on enlarged :scale on the line 2l2l of Figure 19;

Figure 22, an enlarged plan view of parts of the left end portion of the machine with some parts removed and some broken away;

Figure 23,- a fragmentary view in vertical section on the line 23-23 of Figure 22; I

Figure 24, an enlarged side view with portions I broken away of an improved decker point;

Figure 25, an enlarged fragmentary top plan view of said decker point;

Figure 26, an enlarged front elevation with parts in longitudinal vertical section and other parts broken away to show more clearly jacquard shaft actuating and pattern control devices at the end of the machine shown in Figure 22;

Figure 27, atransverse vertical section on the line 21-21 of Figure 26;

Figure 28, 'atransverse vertical section'on the line 28-28 of Figure 26;

Figure 29, a graph of the in and out motions of the front push-in bar and of movements of'the adjustabl controlling cams into and out of operation for one decking cycle wherein the operative position of the adjustable controlling cam for jacquard change (dotted lines) is maintainedior an extended period in decking (broken lines). Movement of the push-out bar is shown superposed on the out movement of the push in bar during decking;

Figure 30, a fragmentary view showing the positions of a needle and a decker point in rela- Decking The decker mechanism of the type shown in the accompanying drawings comprises devices for removing or casting oil! stitches from predetermined needles in the front bed, transferring said stitches laterally, and placing them on other selectively conditioned needles. Although the decker mechanism is described herein as operating on edge needles-as in fashioning for example, it is contemplated that parts thereof may also be employed in knitting lace designs, eyelet effects, feathered designs and cable stitch effects.

Instrumentalities provided for selecting and positioning said predetermined edge needles for decking, include the lifting plates 345 and 346, the fashioning bar 3, and slide rods 350 and IN, Figures 18, 19 and 21; and, for idling or activation, respectively, in fashioning include the narrowing or idling cams 3H and 313 and the widening or activating cams iii and 3, Figures 18 and 20, and parts operatively associated therewith, as the slide rods MI and 322. These instrumentalities cooperate with a main jack 293, a connecting jack 294, an interposed jack 295. and a cross jack 29l, operating as a set, to condition each push jack I93 whereby the corresponding needle is selectively positioned for decking, as well as for other purposes, through its needle positioning jack 28 and suitable actuating devices, as the push-inbar I95.

The selection and conditioning of the push jacks I93 which control the operative position of those predetermined needles from which the stitch loops are to be cast off, in a given decking operation .incident to narrowing, is accomplished by actuating the lifting plates 3W5, ilt during the pattern or jacquard change phase of the last knitting cycle preceding the decking cycle in which the stitches are cast oil.

In the casting off or decking cycle, the selected needles are advanced to straight knitting condition where their hook portions are engaged by Said loops; are left on said' the decker points. points when said needles and their push jacks are retracted by push out bar "5, Figures 16 and 22. In the jacquard change phase of this cycle, the push jacks of the next active. adjacent needles to which the cast of! stitch loops are to be transferred are selectively actuatedto condition said needles to receive said loops; and the narrowing mechanism operates to condition the push jacks of the needles from which the loops were removed toidle said needles in the next knitting cycle. During the decking cycle, knitting movement of the stitch cams 3i, 35 on rods l0, Figures'lti and 1'1, and of the thread carriers l9 and brushes 2| is arrested.

' tially advanced by operation of the push-in bar I95. Said push-in bar actuated by cam 228, Figure 26, and associated parts, moves said needles in the front bed toward the rear bed and into loop lifting position in proper synchronized relation with the decker points 182, Figure 16, which are simultaneously moving forward and down toward said needles.

The latches of said needles are opened by the stitch loops suspended thereon, as the advancing inner ends or hooksof the needles move out of the front bed and past adjacent comb portions of the rear bed to their in" position, as seen in Figure-30, or to the same extent as-if advanced for straight knitting operation.

The advanced hooks of said needles with latches open-are engaged at said in position by the decker points 182, after which, said needles are returned, or moved outwardly, by push-out bar 115 engaging end butts 29 of the corresponding needle jacks 18, to their normal retracted position, Figures 17 and 29.

Said decker points, while engaging said hooks, are simultaneously moved therewith from the position shown in Figure 30 to the stitch loop receiving posit on. about as shown in Figure 31, which is reached toward the end of said combined movement of the needles and the decker points 182. Said points thereupon move into the stitch loops asthe latter are intercepted and cast off of the withdrawing needles by adjacent comb portions of the front bed. The decker points carrying said loops are then raised to clear the comb.

. During said decking cycle, the selecting or jacquard change devices and the widening and narrowingcontrol devices operate to determine the new'number of active needles to be actuated in the next course by the knitting cams. The decker points are then moved laterally to present the removed loops in position to be-received on the hooks of the selectedactive needles after narrowing has been effected.

When the decker points with the removed stitch loops thereon are moved to position with said loops opposite the inner ends of the selected active needles upon which said loops are to be received. the front push-in bar I95 brings all the active needles toward thread receiving position.

For this purpose, and as indicated diagrammatically in Figure 29, a special in motion is' imparted to the front push-in bar I by operation of cam 230, Figures 26 and 28. Said "in" motion starts near the end of the decking cycle and continues into the initial portion of the next knitting cycle. Said in" motion begins earlier but proceeds more slowly than the corresponding in" motion of said push-in bar I95 produced by cam 228 to advance the needles for a normal knitting course. The advancing hooks of the loop receiving needles are, therefore, pushed slowly and smoothly into engagement with said decker points and through said stitch loops suspended thereon. V

To produce the inmotions above referred to. said fixed cam 228 and said adjustable cam 230 cooperate with a cam roller 223 on the inner arm 225 of cam actuated front rocking'levers pivoted

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