摘要:
A sewing machine having a rotary drive mechanism and a needle bar mounted for reciprocation between upper and lower positions with respect to a looper includes a transmission system operably connected between the rotary drive means and the needle bar to convert the rotary motion of the drive means to reciprocating motion of the needle bar. The transmission system includes a lever pivotally mounted intermediate its ends and pivotally connected at one end to the needle bar, a crank pivotally connected at one end to the rotary drive means, and a pitman pivotally connected between the crank and the other end of the lever to convert the rotary motion of the drive means and crank to reciprocating motion for oscillating the lever and reciprocating the needle bar. The crank is operatively connected to the looper for synchronously driving the looper with the needle bar. The transmission system also includes means for selectively maintaining the line of thrust of the pitman in a first position substantially perpendicular to the lever to transmit motion thereto from the drive means for reciprocating the needle bar and in a second position substantially in alignment with the lever whereby the pitman idles under the influence of the drive means without transmitting motion to the lever or the needle bar.
摘要:
Machines have been disclosed for forming a button stay side zipper patch and a fly side zipper patch as garment components for later incorporation into garments such as men''s pants; the button stay side machine consists of a combination of elements which takes separate pieces of zipper patch fed either invertingly or directly to a folding device where the patch is folded and pressed, thereafter joined with a zipper string, and in a serging sewing machine the zipper is sewn to the patch; in a zipper ''''gapper'''' device a certain number of zipper teeth are removed from the zipper string and, after a ''''top stop'''' placed on the zipper section string for the button stay side patch, the continuous and chained-together button stay side patch is placed in a cutting device where each individual button stay side zipper patch is cut from the others and thereafter stacked; another embodiment of the button stay side zipper patch machine is provided whereby individual patches are preformed in a ribbon and the ribbon is fed to the serging machine without pickup and folding of the individual patches; thus, the present button stay side machine is comprised of means for feeding an individual patch; means for inverting every other patch, if desired, means for folding each patch, means for pressing; means for feeding and sensing the feed of the zipper; means for serging; means for gapping the sewn button stay side zipper; means for placing a top stop on the zipper; and means for cutting each of the individual button stay side zipper components including means for stacking the same; the fly side zipper patch machine comprises a serging machine including means for feeding a ribbon of patches to the same, and a double needle flat bed sewing machine in-cluding the means for feeding the patches through it and through the serging machine and means for feeding the zipper string whereby the zipper string is sewn on the patch; further the fly side zipper patch machine includes the gapper means, but not the top stop means, and the cutting and stacking means.
摘要:
An automatic sewing apparatus is provided which sequentially controls the positioning and sewing of workpieces. Position of a workpiece is sensed by two photoelectric cells which activate portions of an electrical control circuit to control the various apparatus functions. Workpiece orientation is maintained by several guide means which interact with the sewing machine. An extendable rod turns the workpiece about the sewing machine needle thereby permitting several lines of stitching on a single workpiece.
摘要:
A sewing machine having a rotary drive mechanism and a needle bar mounted for reciprocation between upper and lower positions with respect to a looper includes a transmission system operably connected between the rotary drive means and the needle bar to convert the rotary motion of the drive means to reciprocating motion of the needle bar. The transmission system includes a lever pivotally mounted in the machine and pivotally connected adjacent one end to the needle bar, a crank pivotally connected at one end to the rotary drive means, and a pitman pivotally connected between the crank and the lever to convert the rotary motion of the drive means and crank to reciprocating motion for oscillating the lever and reciprocating the needle bar. The crank is operatively connected to the looper for synchronously driving the looper with the needle bar. The transmission system also includes means for selectively maintaining the line of thrust of the pitman in a first position substantially perpendicular to the lever to transmit motion thereto from the drive means for reciprocating the needle bar and in a second position substantially in alignment with the lever whereby the pitman idles under the influence of the drive means without transmitting motion to the lever or the needle bar. A gating mechanism prevents changing the line of thrust of the pitman until the needle bar is in its raised position.
摘要:
A device for conveying, inverting, mating and sewing garment workpieces is disclosed which senses the presence of a first workpiece near a first position, raises and captures the leading end of the first workpiece thereby permitting conveyor rollers covered with an elastomeric material to sweep the following end of the first workpiece under the captured leading end, releases the captured leading end of the first workpiece after an appropriate delay period whereafter the first work-piece is conveyed to a second position, senses the presence of the first workpiece at the second position and the presence of a second workpiece at a third position, holds and aligns the second workpiece at the third position, moves the first workpiece from the second position over a ramp onto the second workpiece at the third position, releases the held workpieces and urges them toward a sewing area, and sews the two work-pieces together.
摘要:
A device for turning over sequentially alternate garment components being transferred on a conveyor is disclosed which senses the presence of a garment component on the conveyor, raises and captures the leading edge of the garment component thereby permitting conveyor rollers covered with an elastomeric material to sweep the following edge of the garment component under its captured leading edge, and releases the captured leading edge of the garment component after an appropriate delay period.
摘要:
A machine for crimping a garment component comprising a feed section and a die and press section, including means for extracting a severed garment component from the die and press section, and means for controlling said machine; means for cycling said machine in an automatic mode of operation of said machine have also been provided.
摘要:
LOW CALORIE SWEETENER PREPARED BY THE STEPS OF REACTING A METAL SALT OF SACCHARIN WITH A NON-TOXIC ACID IN THE PRESENCE OF AN EMULSIFYING AGENT COMPRISING WATER, GLYCERIN AND GLYCEROL MONOSTEARATE, ADDING A NON-TOXIC POLYPHOSPHATE TO THE RESULTANT EMULSION OF THE REACTION PRODUCT FORMED IN THE REACTION AS A STABILIZER THEREFOR, AND ADMIXING THE EMULSION WITH A CARRIER SUCH AS AN AMINO ACID ORGLUCONO DELTA LACTONE. THE RESULTANT POWDER CONSTITUTES THE LOW CALORIE SWEETENER.
摘要:
A fabric workpiece pickup and transfer device having an arm and an adhesive tape trailed over guide means on the arm to which a workpiece is pressed into adhesive contact, a motor for rotating the arm from one position to another, means for advancing the tape, and electrical circuit means for controlling the pickup and transfer functions; means for releasing the workpiece following transfer are also provided and may be operatively interconnected with said device.
摘要:
AN IMPROVED CONTROL DEVICE HAS BEEN PROVIDED FOR A SEWING MACHINE USED TO SEW WELTS OR PIPING SUCH AS FOR PANTS BACK POCKET AND BUTTON HOLE PIPING. THE POCKET WELTING MACHINE IS COMMONLY KNOWN AS A REECE POCKET WELTING MACHINE AND IS PROVIDED WITH CONTROL DEVICES WHICH REQUIRE CONSIDERABLE SKILL FROM AN OPERATOR. THE NOVEL CIRCUIT CONTROL DEVICE IS A COMBINATION OF A RELAY CIRCUIT AND APPROPRIATELY CO-ACTING DELAY AND CONTROL CIRCUITS WHICH ELIMINATE A NUMBER OF OPERATOR CONTROLLED MACHINE EVENTS AND PROVIDE FOR IMPROVED SEQUENCING PRODUCTION RATES OBTAINABLE WITH THE THUS MODIFIED MACHINES HAVE BEEN OUTSTANDING.