Under Tension Patents (Class 112/305)
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Patent number: 4548146Abstract: There is disclosed a method of finishing lengthwise both ends of a towel fabric by sewing after automatically forming a three-ply part on each and, and an apparatus for practicing this method.At each end of the towel fabric, a first part and a second part to wrap up the first part are folded automatically in turn so as to form a three-ply part including the above two parts and a ground fabric part.Selvages extending outwardly slightly farther than crosswise both ends of the first and the second parts are formed on both ends of the ground fabric part of the three-ply part. The three-ply part thus provided with selvages is stitched from one selvage side to the other with sewing thread so that automatic folding and sewing of the three-ply part can be performed without causing the crosswise end of the first and the second folded parts to jut out from crosswise both ends of the towel fabric.Type: GrantFiled: December 6, 1982Date of Patent: October 22, 1985Inventor: Takanori Okada
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Patent number: 4541353Abstract: A dual-chain sewing machine for aligning the edges and the corresponding seam tracks of pieces of a garment that have different curvatures and for sewing the pieces together along the seam tracks includes two flexible, elongated carriers, which move at approximately the same linear speed and which are mounted and arranged for motion around continuous paths. Each carrier has pins extending from it in a direction transverse to the direction of movement, with the pins of one carrier extending toward the pins of the other carrier. A first fabric piece is applied to the pins of the first carrier when a pin bearing portion of the first carrier is in a path segment corresponding to the seam track on the first fabric piece; a second fabric piece is applied to the pins of the second carrier when a pin bearing portion of the second carrier is in a path segment corresponding to the seam track on the second fabric piece.Type: GrantFiled: January 9, 1984Date of Patent: September 17, 1985Assignee: Chesebrough-Pond's, Inc.Inventor: Elbert Engle
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Patent number: 4497270Abstract: An automatic apparatus for sewing elongated workpieces, and especially useful for precisely sewing a pair of concealed slide fastener stringers to a pair of fabric halves defining the opening therebetween comprises a table having fabric input guides at the front end of the table, a sewing station, and a gripper assembly for drawing the fabric pieces from the sewing station under a tension less than that applied by the sewing machine feed dog and presser foot. Individually actuable workpiece holders are provided to permit successive setting up of the fabric pieces in the sewing station. Fastener stringers are guided to the sewing station with their corded edges supported in guide channels as the stringers are superposed on the respective fabric piece. The sewing operation proceeds automatically in an extremely precise manner after the sewing station is inputed and the sewing machine started.Type: GrantFiled: September 26, 1983Date of Patent: February 5, 1985Assignee: Yoshida Kogyo K.K.Inventor: Ronald J. Boser
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Patent number: 4479449Abstract: A sewing machine of the differential type which, in one stitching operation, gathers a first fabric material and sews a band to one side of said first fabric material and a second fabric material to the other side of the first fabric material. The throat plate of the sewing machine has a longitudinal groove disposed ahead of the sewing needle to guide the band underneath the fabric material being gathered by the gathering dog. No gathering dog is in register with the groove. The machine may include overlock stitching.Type: GrantFiled: April 14, 1983Date of Patent: October 30, 1984Inventor: R/e/ jean Raiche
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Patent number: 4475474Abstract: A device for automatically supplying a strip of elastic tape material to a sewing machine under tension. The device uniquely combines a tape supply mechanism, for tractively propelling the tape, and a tape tensioning assembly which guides the tape along a predetermined path of travel while measuring the amount or degree of tape tension. The tape supplied is under the control of the tape tensioning apparatus which may include a mechanism for selectively modulating the degree of tape tension.Type: GrantFiled: October 15, 1982Date of Patent: October 9, 1984Assignee: Union Special G.m.b.HInventors: Wolf R. von Hagen, Johannes K. Strauss
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Patent number: 4473017Abstract: An apparatus for use with a sewing machine to automatically hem the free ends of tubular portions of garments. The apparatus has a guide cylinder with a stop and a tension cylinder capable of being retracted, both of which are mounted on the sewing machine with a folding guide which is moveable between a retracted position and an operative position. A tube connected to a source of compressed air assists in removing the sewn garment from the apparatus.Type: GrantFiled: December 16, 1982Date of Patent: September 25, 1984Assignee: AMF Inc.Inventors: Michel Letard, Daniel Renouvin
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Patent number: 4467734Abstract: A sewing machine apparatus including a work support assembly and a positioning assembly that cooperate in moving a workpiece edge through the sewing station of the machine. The workpiece support assembly is arranged to carry and advance the open end of the workpiece in an endless loop configuration. The positioning assembly operatively rotates wih the work support and is effective to influence the lateral placement of the workpiece edge before and during the sewing cycle.Type: GrantFiled: April 27, 1982Date of Patent: August 28, 1984Assignee: Union Special GmbHInventor: Gunter H. Rohr
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Patent number: 4399763Abstract: The present invention relates to a dual-ply fumigation and plant bed cover including an imperforated plastic type cover that acts to effectively seal a plant bed during fumigation and a cloth type cover for providing basic plant protection during the early growth of plants within the covered plant bed. The plastic type cover is stitched to the cloth type cover about a tear seam in order that at a selected time the plastic type cover can be torn or stripped away from the cloth type cover, leaving the cloth type cover stretched over the plant bed. To form the tear seam, a tape cloth strip is secured over the plastic layer about each side, and stitches are sewn through the tape cloth, plastic, and cloth layers. As a part of the method of the present invention, as disclosed herein, after seeding, the plastic type cover may remain intact with said cloth type cover until seed germination, so as to effectively expedite seed germination because of a greenhouse effect realized by the plastic type cover.Type: GrantFiled: May 14, 1981Date of Patent: August 23, 1983Inventor: Marvin C. Alexander
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Patent number: 4377122Abstract: An elastic metering device including a plurality of individual tape feeding and tensioning mechanisms having a common drive shaft, with each mechanism being adapted to independently act on one of a plurality of tapes as they advance toward the machine. Each tape feeding and tensioning mechanism includes an operator controlled variable speed drive mechanism for selectively affecting the manner in which each mechanism acts on each tape.Type: GrantFiled: October 2, 1981Date of Patent: March 22, 1983Assignee: Union Special CorporationInventors: Ronald J. Boser, Henry J. Watts
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Patent number: 4315470Abstract: A workpiece guide control for a sewing unit in which the guide is mounted for limited sliding movement on the worksurface of the unit intermediate its sewing machine and traveling gripper. The guide slides to a position of close proximity with the stitching instrumentalities and by means of a displacing apparatus operatively associated with the traveling gripper and the guide, the latter as the gripper approaches, is effective in activating the displacing apparatus to effect movement of the guide from the pathway of the gripper and permit the latter to advance to the position from which the guide was displaced.Type: GrantFiled: September 10, 1980Date of Patent: February 16, 1982Assignee: Rockwell-Rimoldi, S.p.A.Inventors: Giancarlo D. Torre, Luigi Avesani
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Patent number: 4290376Abstract: An auxiliary transport device for sewing machines utilized to attach bands to the edge of a workpiece having a pair of spaced roller members disposed in frictional engagement with a band attached to the workpiece and simultaneously rotated incrementally for advancing the workpiece away from the sewing zone. A compensating roller is mounted co-axial with one of the pair of spaced roller members and incrementally rotated therewith in a location to frictionally engage and advance that portion of the workpiece extending from the band. The compensating roller is capable of yielding in a vertical direction without effecting the position of the roller with which it is operatively associated and provides a means for effectively accommodating portions of the workpiece varying in thickness as a result of attachments such as loops, pockets and the like.Type: GrantFiled: November 5, 1979Date of Patent: September 22, 1981Assignee: Rockwell-Rimoldi, S.p.A.Inventors: Gianfranco Brusasca, Gianfranco Garzulano
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Patent number: 4271774Abstract: Cloth moves from a reel along its length, a first "right-handed" edge treatment system positioned at one edge of the path of movement of the cloth treats one edge of the cloth, the cloth is turned over and a second "right-handed" edge treatment system positioned at the edge of the path of movement treats the opposite edge of the cloth. The cloth then moves into a cutting station where the cloth is cut into smaller sections. The cut sections are moved along an L-shaped path by a conveyor system with the cut edges extending along the path, and a third "right-handed" edge treatment system positioned adjacent the first leg of the L-shaped path treats one cut edge of the sections, the sections are turned over as they move into the second leg of the L-shaped path, and a fourth "right-handed" edge treatment system treats the opposite cut edge of the sections. The sections are then stacked.Type: GrantFiled: March 19, 1979Date of Patent: June 9, 1981Assignee: Opelika Manufacturing CorporationInventor: Perry E. Burton
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Patent number: 4233916Abstract: Continuous unseamed lengths of embroidered fabric are produced by a special process and apparatus therefor. Fabric to be embroidered upon is pulled off a vertical bolt and engaged at its upper edge by pins on an endless belt which is actuated to advance the fabric across the face of an embroidery apparatus. Then the lower edge of the fabric is tensioned transversely. Embroidery proceeds and then the embroidery yarns are cut. A release member disengages the lower edge of the fabric, the belt is actuated to advance the fabric, disengage its upper edge from its pins, to move the embroidered fabric onto a collection bolt and to position a new section of the fabric in the embroidery area. The upstream rear end of the embroidered section of fabric is registered so the new embroidery will be continuous with that just completed, and the operation is repeated.Type: GrantFiled: January 10, 1978Date of Patent: November 18, 1980Assignee: Emb-Tex CorporationInventor: David Krieger
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Patent number: 4227471Abstract: A system for the edge-parallel sewing of a workpiece, consisting of a plurality of layers, together to form a seam, e.g. in the production of trouser legs, pockets, shirts and the like, comprises a workpiece guide in the region of the needle path and formed with separators interposed between the layers, and a drag-clamping device which engages a portion of the stack of fabric layers remote from the incipient stitching operation to apply a stretching or drag force thereto. According to the invention, a retracting device is provided which, upon approach of the drag clamp to the stitching location, withdraws the guide device out of the path of the clamp.Type: GrantFiled: June 9, 1978Date of Patent: October 14, 1980Assignee: Durkoppwerke GmbH BielefeldInventors: Harald Collbrunn, Franz Hannemann, Heinz Fransing