US2019294A - Method of and means for tacking articles - Google Patents

Method of and means for tacking articles Download PDF

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Publication number
US2019294A
US2019294A US702279A US70227933A US2019294A US 2019294 A US2019294 A US 2019294A US 702279 A US702279 A US 702279A US 70227933 A US70227933 A US 70227933A US 2019294 A US2019294 A US 2019294A
Authority
US
United States
Prior art keywords
work
stitch
thread
needle
tacking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US702279A
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English (en)
Inventor
Corrall Herbert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Singer Co
Original Assignee
Singer Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Singer Co filed Critical Singer Co
Application granted granted Critical
Publication of US2019294A publication Critical patent/US2019294A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B5/00—Sewing machines for temporarily connecting articles, e.g. pairs of socks

Definitions

  • the tack consists of one or two stitches efiected by hand with the use of a heavy soft brightly coloured thread, which enables the articles to be tacked in the majority of cases without damage to the fabric.
  • existing automatic tacking machines for this operation there is a liability to damage the fabric by pulling the thread into a knot when attempting to part the articles.
  • the tacking operation is effected by means of a singlethread chain-stitch automatic tacking machine contrived to form a predetermined number of stitches and to effect the withdrawal of the thread from the final loop at the completion of the tack, whereby to leave the thread-end free and projecting, so that the operator or customer can, by pulling on the free end, instantly remove the tack without risk of damaging the fabric.
  • a stationary or a movable fini ger which is positioned beneath the needle in the formation of the final stitch or stitches, and the movement of which finger by the raising of the work clamp upon completion of the tacking operation results in the withdrawal of the thread from the final loop.
  • At least one additional cam element may be provided on the cam wheel for effecting operation of a finger movable to a position beneath the needle in the formation of the final stitch or stitches of the tack, so that the last stitch will be made thereover, whereby such finger is operative to withdraw the thread from the final loop.
  • a finger may be fixed to the clamp in position to lie beneath the needle in the formation of the final stitch, so that on lifting the clamp and removing the work the thread is withdrawn from the final loop.
  • Fig. 1 is a side elevation of an automatic tacking machine of generally known construction fitted with a device for withdrawing the loop from the final stitch;
  • Fig. 2 is a fragmentary plan view and Fig. 3 an end elevation.
  • Fig. 4 is a fragmentary front elevation
  • Fig. 5 a plan
  • Fig. 6 an end elevation of an automatic tacking machine adapted to produce a tack in the form of a geometrical figure
  • Fig. '7 is a perspective view of the work-clamp.
  • the machine is formed with the usual frame comprising the standard I, work-supporting arm 2 and overhanging bracket-arm 3 terminating in the head 4 for the usual reciprocatory needle-bar 5 carrying the needle 6.
  • the head 4 also has mounted in it the usual manually operated work-clampopening bar I to the lower end of which is fixed a lateral arm 8 extending under the hooked upper end of a post 9 rising from the front end of the upper clamp-bar Ill.
  • the upper clamp-bar I0 is fulcrumed at its rearward end in the usual ful- 4 crum block H rising from the lower clamp-bar l2 and is yieldingly depressed by the leaf-spring I 3.
  • the work is clamped between the lower plate l4 and the upper apertured foot l5 fixed, respectively, to the front'ends of the lower and upper clamp-bars l2 and I0.
  • a suitable automatic thread-cutting mechanism l9 which may be constructed substantially in accordance with the disclosure of the U. S.-Patent to Fifield, No. 1,841,102, of Jan. 12, 1932. Such a thread-cutter cuts one limb of the last needle-loop retained on the looper 16 as the machine comes to rest.
  • the work-clamp is moved upon the arm 2 to group the stitches in the desired order or arrangement by means of the usual connections with the feed-cam 20 which is driven by the main-shaft I! through a worm-drive 2
  • the machine of the foregoing description is the well known Singer No. 114-31 tacking machine the work-clamp of which is reciprocated to-and-frolongitudinally of the bed 2 and without any side motion.
  • the machine when started, makes a tack of 7 needle-thrusts or stitches and the finishing end of needle thread, as severed by the thread-cutter, protrudes through and locks the last needle-loop at the under side of the work.
  • a lever 23 having at its front end a laterally extendingfinger 24 overlying the apertured upper clamp foot l5 and having in its upper face a thread-receiving groove 25.
  • the lever 23 has fixed to its rearward end an upward extension 26 formed with a cam-incline 21, Fig. 3.
  • cam-pieces 28 mounted on the periphery of the feed-cam 20 are cam-pieces 28 arranged to actuate a lever 29 fulcrumed at 30 on the frame-pedestal. 3
  • Figs. 4 to 7, inclusive there is illustrated the well known Singer No. 114-27 machine embodying the invention in a modified form.
  • This machine is adapted for sewing a paper ticket to clothing by a group of stitches ortack in the form of a triangle. It embodies substantially the same stitch-forming mechanism, thread-cutting mechanism and work-clamp as the previously described machine with the exception that the upper clamp-foot 33 is formed with a triangular aperture 34 within which the triangular tack is formed by the needle 35 of the stitch-forming devices.
  • a finger 36 Fixed to the clamp foot 33 within the triangular opening 34 is a finger 36 in such position as to be stitched over by the needle in the formation or". the final stitch, whereby upon lifting the clamp-foot and removing the work the finishing thread-end will be withdrawn from the final loop.
  • stitchforming mechanism including a reciprocatory needle, a chain-stitch looper, a work-clamp, a feed-cam and connections for relatively moving the stitch-forming mechanism and work-clamp in the production of a group of stitches, a stopmotion device, and a thread-end pull-out finger at the needle'side of the work positioned to be stitched over by the needle in its last downstroke.
  • stitchforming mechanism including a reciprocatory needle, a chain-stitch looper, a work-clamp, a feed-cam and connections for relatively moving the stitch-forming mechanism and work-clamp in the production of a predetermined group of stitches, a stop-motion device, a thread-end pullout finger disposed at the needle side of the work, and means for moving said finger from a retracted position to a position within the zone of the last two needle-thrusts, whereby engagement of the pull-out finger and the thread of the last stitch above the work is efiected.
  • stitch- 5 forming mechanism including a reciprocatory needle, a chain-stitch looper, a work-clamp, a
  • feed-cam and connections for relatively moving the stitch-forming mechanism and work-clamp in the production of a group of stitches a stopmotion device, means for severing the needlethread below the work, and means at the upper side of the work for withdrawing the finishing thread-end of the tack from the final loop.
  • stitch-forming mechanism including a reciprocatory needle and a single-chain-stitch looper, a work-holder, means for relatively moving the 20 needle and work-holder to sew a group of stitches, and a thread pull-out device arranged at the needle side of the work so that the last stitch of the group will be laid thereover.
  • stitch-forming mechanism including a reciprocatory needle and a single-chain-stitch looper, means including an upper clamp-foot for hold- I0 ing the work during a sewing period, means for relatively moving the stitch-forming mechanism and work-holding means to sew a group of stitches, a stop-motion device, and means mounted on said upper clamp-foot for pulling the fln- I! ishing thread-end of the group of stitches back through the last thread-loop of such group.
  • stitch-forming mechanism including a reciprocatory needle and a single-chain-stitch looper, means including an upper clamp-foot for holding the work during a sewing period, means for relatively moving the stitch-forming mechanism 45 and work-holding means to sew a group oi stitches, a. stop-motion device, and a thread pullout device mounted on said upper clamp-foot in position for the last stitch of the group to be laid thereover.
  • stitch-forming mechanism including a reciprocatory needle and a single-chain-stitch looper, a 55 work-holder, means for relatively moving the needle and work-holder to sew a group of stitches,
  • a stop-motion device a thread-cutter, a thread pull-out finger disposed outside of the stitching zone during the sewing, and automatic means for 60 projecting said finger into the stitching zone in time and in position for the last stitch of the group to be formed thereover.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Sampling And Sample Adjustment (AREA)
US702279A 1933-01-30 1933-12-14 Method of and means for tacking articles Expired - Lifetime US2019294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2817/33A GB413761A (en) 1933-01-30 1933-01-30 Method of and means for tacking articles

Publications (1)

Publication Number Publication Date
US2019294A true US2019294A (en) 1935-10-29

Family

ID=9746490

Family Applications (1)

Application Number Title Priority Date Filing Date
US702279A Expired - Lifetime US2019294A (en) 1933-01-30 1933-12-14 Method of and means for tacking articles

Country Status (4)

Country Link
US (1) US2019294A (de)
DE (1) DE620724C (de)
FR (1) FR751960A (de)
GB (1) GB413761A (de)

Also Published As

Publication number Publication date
GB413761A (en) 1934-07-26
FR751960A (fr) 1933-09-13
DE620724C (de) 1935-10-26

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