US987827A - Openwork pattern device for knitting-machines. - Google Patents

Description

B. SALZER & G. WALTHER. OPENYYQRKPATTERN DEVICE FOR KNITTING MACHINES.

APPLICATION FILED APR. 2, 1908.

Patented Mar.28,1911.

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B. SALZER & G. WALTHER. OPENWORK PATTERN DEVICE FOR KNITTING MACHINES. APPLIOATION FILED APR. 2, 1908.

987,827,, Patented Mar.28,1911.

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BRUNO SALZ ER AND GUSTAV WALTHER, 9F CHEMNITZ, GERMANY.

OPENWORK rA'rTE'nn DEVICE FOR KNITTING-MACHINES.

To alt whom it may concern: 1

lie it known that we, BRUNO Samar-:1: and 1 (iL'S'IAV hsLTi nn, both manufacturers, and residing at the city of Chemnitz,'in the Kingdom of Saxony, German Empire. and both subjects of the King of Saxony, have jointly invented a certain new and useful ()pcnwork. Pattern Device for Itinittingdtlachines, of which the following is a specification.

Straight-bar knitting machines for the manufacture of open-work or lace goods, are in some cases furnished with jacquard apparatus for the formation ofthe pattern. The patternis, as it were, plotted on a pattern card in the form of perforations, and this card travels intermittently under a number of jacquard needles.

Each jacquard needle is connected with a particular lace point in each division of .the knitting machine, so that one and the same pattern is simultaneously produced in all divisions.

Two constructions embodying the invention are illustrated in the accompanying drawings.

Figure 1 shows a. stocking leg, of which the part rendered conspicuous by crosshatchings is to receive an open-work pattern, the other parts being plain. Fig. 2 is a cross section of part of the jacquard apparatus; used producing the pattern shown 01'' indicated in Fig. 1. Figs. 3 and a are respectii'ely an elevation and plan view of the other form of constructionwhich will be described. s

Referring to Fig. 2, 1 is the card prism, on which hangs the pattern card 2. Closely above theprism there is another pattern card 3, one end of which is coiled on the cyleard 3 being attached to'the cylinders by screws or the like 6 and 7. T he cylinders 4, 5 are rotatable and carried by arms 8. and 9 fiXed to a. plate 10. To the cylinder 5 is fixed a ratchet wheel 11 engaged by a pawl 12 which can be reci rocated in the direcmechanism for moving this pawl may be of any suitable kind and is not shown in "the drawing. Another pawl 15 prevents rotation of the cylinder 5 in the direction of the arrow 14. To the one end of the cylinder 1 there is fixed a disk 16 with a cord 17 attached to it, and a weight 18 fastened to this cord keeps the pattern card 3 stretched.

The jacquard needles 20 are arranged in the next frame needle.

Specification of Letters Patent. P t t d 2%, 1911,

- Application filed April 2, 1908.

Serial No. 424,722.

in a division of the knitting machine, and.

each lace point in a division is connected to a particular jacquard needle 20. In Fig. 2 the connection is only diagrammatically indicated. To one of the jacquard needles 20 a cord 22 is attached at 21, and passes over a pin to a lug24 of the lace point 25. The lace point 25 acts in the known manner to cover the hook of the frame needle 26, so that the loop on the frame needle 26 passes on to the needle 25, to be transferred by the latter to When the acquard needle 20 is pulling the cord 22, either by gravity or bythe action of a spring, the lace. point 25 covers theohook of the frame'needle 26, and then the transfer of the loop to another needle can take place. If, however, the cord 22 is slack, the lace point 25 is by its own elasticity, held back and does not come into act-ion.

'The card prism 1 and both the card cylits path and the said needles are thus lifted.

But such needles 20 as are in line with holes in the cards are not lifted, and remain sus pended from the cord 22. Therefore, for

" such lace points 25 as are, at the proper time, to cover the hooks of the frame needles 26,

the respective jacquardneedes 20 must encounter holes in the cards 2 and 3. The holes in the card 2 are so arranged as to produce. a certain open-work design at each rotation of the prism 1. In the card 3 there may. be holes for all the needles 20; in this case the card 3 has no efi ect on the action of the machine. Or there may be no holes at all in the card? In this case the formation of an open-work pattern is prevented, and plain fabricis produced. Or, finally, there may be holes in some parts of the card 3 and not in others. In this third case only such holes in the ca'rd2 will produce an effect as will coincide-with holes in the card 3.

The arrangement described aflords important advantages which may be'explalned with reference to the manufacture of a leg, from the upper end aa to the lower the known manner, each needle being indeoint of the foot, the pattern card 2 of the acquard apparatus continues in operation. The covering cardB remains, however, stationary during the knitting of the part between aa to b-b. That part of the covering card 3, which is at this stage to lie under the needles 20, has no holes, so that none of the needles 20 are allowed to drop in order to be acted on the pattern card 2. The part aa Z)b of the fabric therefore remains without pattern, 2'. e. is plain. At the mo: ment at which the row ofloops Z b is knitted, the pawl 12 begins to move the covering card 3. The movement of the card 3 continues until the row of loops cc is reached, and for each new row of loops produced during the movement a larger number of holes is placed under the needles, 20. The effect of this is that two substantially triangular pieces of plain fabric 6 0 (Z are produced, simultane, ously with a substantially triangular or segmental part 0 (Z a with a pattern. During the knitting from c c to e c the covering card 3 again remains stationary, the part under the needles having holes for all the needles with the exception of those which produce the narrow edge strips 0 2' 0 6. These narrow strips are made plain to facilitate the sewing together of the edges. From the row of loops e e to the row f f the covering card 3 is moved so as to place under certain needles 20 a non-perforated part of elliptical outline, so that a plain ellipticalpiece of fabric w is knitted within the pattern. Narrow lateral strips are also unperforated, to continue the plain edges of the fabric. From v f-f to g-g the card 3 remains stationary,

presenting to the needles a part which is perforated for all the needles except those at the edges. From g-g to hh, narrowing takes place, and the card' 3 must be moved at each reduction of the width, in order that the plain edges may continue. This description of the action will be sufiicient to indicate the manner in which the leg is finished.

It will be seen that the invention enables goods of any shape and pattern to be produced with the aid of cards of minimum size.

In the construction illustrated in Figs. 3 and 4, a covering plate 30 of metal performs a function similar to that of the covering plate 3 shown in Fig. 2. The steps 31 to 40 at the edges of this plate are provided at a art which comes into action while narrow-' mg takes place, as at 9-9, hh in Fig. 1. The mechanism for intermittently moving the metal covering plate 30 is positively connected with the known mechanism by means of which'the narrowing and bringing into action of the thread guide are effected. The

horizontally movable covering plate 30 rests in lateral slots of guide bars 41, and has at each side a rack 42 meshing with a toothed wheel 43: Both these wheels 43 and a similar toothed wheel44 and a pulley 45 are fixed to a shaft 46. A cord attached to the pulley is connected to a tension spring 47, so that the shaft 46 normally'ten ds to rotate in one direction. Thesmall wheel 44 engages a rack 48 the left hand end of which is in contact with arm 49 fixed to an internally threaded sleeve 51 engaged by a worm 50. The worm gear 50,51 and parts belonging thereto serve in the known manner to intermittently limit the thread guide traverse in accordance with the progressive narrowing. Each time the .sleeve'51 moved by rotation ofthe worm 50, imparts movement to the rods 52, it also moves the rack 48 through the same distance and imparts a certain angular rotation to the shaft 46. The wheels 43 and 44 are so proportioned that each time the rods 52 are moved for narrowing to the extent of twice the pitch, the covering-plate 30 is so moved that the parts 31 first rover the jacquard needles 1 and 2 at the right and left, then the needles 3 and 4,- then with the aid' of the parts 32 the needles 5 and (3 and so on until the desired width of fabric is attained.

Having now-described the nature of our invention we declare that what we claim 1s 1. In a straight-bar knitting machine with jacquard apparatus for making openwork patterns in fashioned fabrics, lacepoints,

of the jacquard needles by the jacquard cards without discontinuing the action of the cards. a

2. In a knitting machine, lace points, jacquard needles connected to said lace points, a card prism carrying cards to actuate said needles to form a pattern with the aid of said points, and a secondary pattern device between said card prism and the needles, and means to move said perforated element, so as to independently prevent actuation of certain of the jacquard needles by the jacquard cards. In testimony whereof we aflix our signatures.

BRUNO SALZER. GUSTAV IVALTHER. In the presence of- VITA-{ELM J. KoUJn'rzUr, KARL VOPEL.

[ comprising a perforated element interposed

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