摘要:
The present disclosure relates to zig-zag sewing machines including means for controlling the bight stops in order to produce ornamental patterns. In particular, the disclosure relates to electronically controlled sewing machines having storage means for storing stitch information and wherein logic means are used to select and release stitch information in timed relation with the operation of the sewing machine. The disclosure of the invention has particular application in those sewing situations wherein it is desired to use more than one needle in a single needle holder of the needle bar which therefore necessitates a limitation on the magnitude of the jogging or swinging of the needle bar in order to accommodate the multiple needles in the aperture of the needle plate. In accordance with the disclosure of the present invention, whenever more than one needle is used switch means responsive to the presence of more than one needle automatically puts the machine into a multiple needle mode of operation.
摘要:
A chain stitch insert receivable in the bobbin case of a sewing machine is formed with a topside ledge which captures and consumes thread as a hook point carries a loop of thread around the bobbin case. The ledge enables the formation of chain stitches without the need for a special eyelet on the machine.
摘要:
A control arm for bobbin winding mechanism in a lockstitch sewing machine is provided with a pawl which serves both to guide needle thread into a thread entering slot for a tensioning device on a bobbin case, and to hold an arm of the tensioning device in a position effective to prevent the thread from being pulled out of the slot.
摘要:
A tailor tack producing arrangement for a sewing machine is disclosed in which stitch patterning data stored in an electronic memory produces a recurring pattern of two closely spaced thread concatenations followed by a multiplicity of work feed increments during which the sewing machine needle bar reciprocation is interrupted. A warning means is disclosed for alerting the operator prior to needle reciprocation to facilitate accurate placement a recurring series of tailor tacks in work fabrics to facilitate accurate placement of isolated tailor tacks, the present invention combines the above with the feature of reversion to the initial stitch of the recurring pattern upon each selection of the pattern and combination with a single pattern facility which further prevents inadvertent needle reciprocation.
摘要:
A positioning pin which permits a sewing machine cabinet to be adapted to accommodate a variety of sewing machines. The positioning pin has a flange dividing the pin into two unequal lengths. The positioning pins are received by bores formed in the base of the sewing machine and the cabinet work surface to properly locate the sewing machine with respect to the work surface. The pins may be reversed end-for-end to adapt to sewing machines having bases with differing heights.
摘要:
A method of forming a buttonhole pattern including two spaced-apart rows of zig zag stitches so that each row is formed in a like manner includes sewing a row of narrow zig zag cording stitches in a first direction and subsequently covering the cording stitches with one of the parallel rows of zig zag stitches formed in a second direction and repeating these steps for the second of the parallel rows.
摘要:
A sewing machine bobbin for a vertical axis hook is provided with a top and a bottom flanged section, and a fastener which both holds the sections together and is the driven member of a clutch through which the bobbin may be driven for bobbin winding.
摘要:
A straight stitch throat plate for a sewing machine is formed as a resilient thin sheet metal part with integral appendages including a depending rear tab which hooks under the edge of a feed dog slot in a zig-zag plate, laterally spaced depending tabs which are received in locator holes in the zig-zag place, and a bent down flange to extend over a front edge of the zig-zag plate into a position wherein the flange may be engaged by a slide plate on the sewing machine.
摘要:
A zig zag sewing machine, wherein a needle bar having a basting position beyond its zig zagging range, is provided with a presser foot having therein an elongate opening which is defined to permit one needle of a twin needle device to pass therethrough without striking the foot upon descent of the needle bar of the machine from a basting position, and which has a beveled edge to interfere at one end of the opening with the other needle and deflect such other needle so that it can pass through the opening.
摘要:
A sewing machine cassette threading system in which the thread handling instrumentalities of a sewing machine are arranged to accept thread from either a cassette or a conventional thread spool with a minimum of operator intervention. The sewing machine has a chamber formed therein to accept the cassette. The sewing machine thread handling instrumentalities are threaded by inserting a cassette into a cover enclosing the chamber and closing the cover. Thread from a conventional spool carried on the sewing machine arm may be placed in the cover for insertion into the thread handling instrumentalities when the cover is closed.