US3407420A - Stay opening machine for footwear - Google Patents

Stay opening machine for footwear Download PDF

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Publication number
US3407420A
US3407420A US516425A US51642565A US3407420A US 3407420 A US3407420 A US 3407420A US 516425 A US516425 A US 516425A US 51642565 A US51642565 A US 51642565A US 3407420 A US3407420 A US 3407420A
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United States
Prior art keywords
stay
rod
plate
passageway
pair
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
US516425A
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English (en)
Inventor
Henry C Farrar
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.)
Uniroyal Inc
Original Assignee
Uniroyal Inc
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 Uniroyal Inc filed Critical Uniroyal Inc
Priority to US516425A priority Critical patent/US3407420A/en
Priority to BE717963D priority patent/BE717963A/xx
Application granted granted Critical
Publication of US3407420A publication Critical patent/US3407420A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D91/00—Stitch-separating or seam-indenting machines
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D11/00—Machines for preliminary treatment or assembling of upper-parts, counters, or insoles on their lasts preparatory to the pulling-over or lasting operations; Applying or removing protective coverings

Definitions

  • a stay opener for separating and folding outwardly the stay sections of a pair of seamed fabric footwear uppers preparatory to the stitching of the folded-over stay sections to the main bodies of the uppers.
  • a stay separator is arranged in a slot passageway leading to the stay stitching machine, at the entrance end of which passageway are provided two opposed guide members adjustable toward and away from each other either jointly or individually to permit fine adjustments of the stay relative to the separator.
  • a yielding pressure foot above the passageway and separator holds the curvedseam stay region of the uppers down without buckling.
  • Thisinvention relates to the art of manufacturing footwear, and in particular to a novel and improved stay opening means for use in the performance of staying operations on fabric-top footwear uppers.
  • Another object of the present invention is the provision of a novelstay splitting elementras a part of such a stayopener.
  • FIG. 1 is an elevational view, in perspective, of a stay opener and associated hold-down device constructed according to the present invention, and mounted in operating condition relative to, a staying machine;
  • FIGS. 2 and 3 are sectional views taken along the lines 2-2 and 3-3 in FIG. '1;
  • FIG. 4 is a top plan view of the stay opener, the view being taken along the line 4-4 in FIG. 3 and illustrating oneof the adjustment possibilities thereof;
  • FIG. 5 is an inverted perspective view of the stay opener .when removed from the staying machine
  • FIG. 6 is a perspective view of the stay-splitting element of hte stay opener according to the present invention.
  • FIG. 7 is a fragmentary elevational view of the heel end region of a seamed pair of shoe uppers showing the stay prior to the opening thereof;
  • FIGS. 8, 9 and 10 are fragmentary, somewhat diagrammatic vertical sections through the stay opener at three spaced locations between the front and rear of the opener to illustrate the manner of operation thereof.
  • shoe upper quarters Q and Q" .(FIG. 7) are. initially seamed to each other in pairs along a curved line 15 adjacent their respective heel end edges, thereby to define a marginal heel end region or stay S composed of overlying sections q' and q". After the main portions of the quarters are separated from each other into an essentially coplanar relationship, the stay sections are folded over, i.e.
  • a twin-needled sewing machine 16 shown in phantom outline only
  • a head 17 housing the operating mechanism for a presser foot 18 and a pair of side by side sewing needles 19 by means of which the turned over stay sections are stitched to their respec tive main quarter portions.
  • the stay opener 20 and hold-down device 21 are both arranged in front of the staying machine, 16.
  • the opener comprises aplate 22 composed of two substantially identical sections 22a and 22b rigidly secured to each other in coplanar spaced relationship by means of a U-shaped block 23 affixed by means of screws or bolts 24 to the plate sections at their undersides and having its recess 23a bridging the slot 25 defined in the center of the plate 22.
  • the plate 22 is equipped with a pair of laterally extending spring steel clips 26 and a guide tab 27 affixed to the underside of the plate (FIG.
  • a bearing block 30 which has a central recess 30a bridging the front end 25a of the slot 25.
  • the block 30 is provided with a pair of bores 31 and 32 of circular crosssection in which are slidably arranged respective plungers 33 and 34.
  • the proximate ends of the plungers carry a pair of L-shaped members'35 and 36 the horizontal webs 35a and 36a of which are fiat-surfaced at the topand in slidable engagement with those portions of the undersurface of the plate 22 bounding the slot end 25a.
  • the facing surfaces of the webs 35a and 36a are chamfered (FIG. 4) to define a gap corresponding to the wide end-25a of the slot 25.
  • the webs 35a and 36a are guides for the stays to be opened, and they will-be so referred to hereinafter.
  • the plungers 33 and 34 are provided with reduced diameter extensions 33a and 34a which project out of the bores 31 and 32 and-are externally threaded at their outermost ends 33b and 34b, the respective; threads being of opposite senses.
  • the block 30 is counterbored at the outside ends of the bores 31 and 32 to receive and provide a seat for a pair of retaining rings 37 and 38 which are fixed in position by means of I set screws 39 and 40. Threaded onto the outermost ends bias the plungers toward each other and at the same time maintain the gear hubs in engagement with the outer surfaces of the retaining rings.
  • bearing blocks 45 and 46 Secured to the frontward faces of the portions of the block 30 located at opposite sides of the recess 30a are bearing blocks 45 and 46 having axially aligned bores through which slidably extends a rod 47 having a gripping knob 48 aflixed to one end thereof.
  • the rod At spaced locations on the rod to the remote sides of the bearing blocks 45 and 46, the rod carries respective pinions 49 and 50 the toothed surfaces of which in axial direction are approximately twice as wide as those of the gears 41 and 42.
  • the rod 47 is provided with an enlargement 51 constituted by a pair of washers abutting against a ring secured in position by means of a set screw (not shown) or the like, thereby to define a pair of shoulders.
  • Two springs 52 and 53 surround the rod between the shoulders 51 and the facing sides of the blocks 45 and 46 and normally maintain the rod in the neutral position illustrated in FIGS. 1 and in which the gears 41 and 42 are both in mesh with the remote end regions of the respective pinions 49 and 50.
  • the stay opener further comprises a splitter 54 which (see FIG. 6) has a shape somewhat resembling an inverted fiat-bottomed boat.
  • the splitter is an elongated flat bar having a V- shaped front end 54a the upwardly and rearwardly curved surfaces 541; 'of which merge smoothly (see also FIG. 2) into the top surface 54c which is longitudinally traversed by a small rib 54d.
  • the splitter 54 is supported by the block 23 within the recess 23a thereof at a slight upward pitch rearwardly of the plate 22, with its front end 5411 positioned just to the rear of the widened slot end a and.
  • the rib 54a facing upwardly and being precisely centered with respect to the longitudinal dimension of the slot 25.
  • the top surface 540 of the splitter is disposed just below the bottom surface of the plate 22, the spacing being slightly in excess of the thickness of one shoe upper quarter.
  • the block 23 further supports an elongated smoothsurfaced strip 55 of metal, plastics or other material which extends frontwardly through the recess a of the block 30 below the guides a and 36a and has its frontwardmost end region a curved downwardly (FIGS. 1 and 2).
  • the operation of the stay opener according to the present invention is as follows:
  • a pair of shoe upper quarters Q and Q", seamed as indicated at 15in FIG. 7, is fed toward the staying machine 16 with the quarters separated into an open condition as indicated in phantom outline in FIG. 1, and with the stay S extending downwardly.
  • the pair of quarters which will ordinarily be a part of a chain of such items coming from the seaming machine (reache the opener 20
  • the lowermost edge of the stay rides up on to and over the curved ramp-like guide element 55a (which prevents the stay from being snagged on the rod 47) into the entrance section 25a of the slot 25.
  • the guides 35a and 36a see FIG.
  • thetapered bottom edge 56a of an elongated plate 56 enters into the notch defined between the outwardly folded quarters Q' and Q" so as to inhibit upward movement of the stay within the slot 25.
  • each of the guides 35a and 36a can be adjusted independently of or jointly with the other guide to compensate for variations in thickness of the material of which the uppers being stayed are made, but more important is the fact that such adjustments can now be made by the sewing machine operator simply and quickly even while the machine is in operation and certainly without the complete shutdowns heretofore required with some of the known stay openers to permit a mechanic to make even the slightest adjustments for all of which he had to loosen the screws holding the guide or guides in place, slide the guide or guides to a new position, and retighten the screws to hold the guide or guides in the adjusted position.
  • my stay opener is extremely compact in size, taking up less than half the space occupied by sorne known stay openers, and is both easy and inexpensive to manufacture, by virtue of which, in conjunction with the aforesaid avoidance of shutdowns, the economy of footwear production is greatly increased.
  • the plate 56 of the holddown device 21 is articulated by pins 58 and 59 to the bottom ends of a pair of vertical rods 60 and 61, the latter being surrounded by a spring 62 the uppermost end of which supports the rear end of a cross bar 63 the front end of which is traversed by the rod 60 and supported by a sleeve bushing 64 fixed to the rod 60 with the aid of a set screw 65.
  • Theuppermost end of the rod 61 extends through the cross bar 63 and is externally threaded to receive an adjustment nut 66.
  • the middle portion of the rod 60 is surrounded by a spring 67 the lowermost end ofwhich bears against the top of the cross bar 63 and the uppermost.
  • the portion 60a of rod is externally threaded to receive an adjustment nut 69 which supports the lowermost end of a spring 70 that surrounds the rod portion 60a and has its uppermost end bearing against a handle 71 aflixed to the top end of the rod 60.
  • the block'68 at its rear is provided with an internally threaded bore into which is screwed the externally.
  • the rod 72 has a shouldered head 72b, and intermediate the latter and the rear face of the mounting plate 73 is surrounded by a springv75.
  • the block 68 (and thus the entire assembly 21) can be rotated. about the axis of the rod 72 out of the position illustrated in FIGS. 1 to 3, and that the spring v75 normally biases the block 68 rearwardly against and into engagement with. the mounting plate 73, in which position the block (and .thus the entire assembly 21) is locked by means of a small plate 76 which is secured at one end to the underside of the block by means of a screw 77 and has its other end in flush engagement with the bottom edge of the mounting plate.
  • the rod head 72b is pushed toward the mounting plate 73 against the force of the spring 75 until the rearwardmost end of the locking plate 76 is clear of the bottom edge of the mounting plate.
  • the block 68 can then be rotated through an angle of 90f, at which time the rod 72 is released to permit the spring 75 to return the block back into engagement with'v the mounting plate, but with the locking plate now engaging one of the side edges of the mountingplate and so again preventing movement of the device 21 until the rod 72i s depressed a suflicient amount; Quite obviously, a subsequent reversal of this procedure will return the de vice 21 to its operating position without losingits original setting.
  • the settings of the adjusting nuts'66 and 69 on the rods 61 and 60, respectively, determine the normal orientation and elevation of the bottom edge 56a of theholddown plate 56 relative to the base plate 22 and the slot 25.
  • the springs 62 and 67 enable. application of.a yielding force to the uppers being stayed, so that the latter are held down relative to the plate 22 strongly enough to prevent the stay S from slippingupwardlyout ofv the slot and yet not so hard as to rupture the stitches 15.
  • the setting of the nut 66, through which the plate 56 can be angularly shifted about the pin 58, also permits the force with which the rear ends of the wings 57 press against the quarters Q and Q" to be adjustedito compensate for variations in stiffness of the material of which the uppers are made.
  • Such a yieldingly pressing hold-down device has the further advantage that it will accommodate itself to the curved seam 15 and will not straighten the same out to such an extent as to produce wrinkes in the stay which, if sewn in, would seriously impair the quality of the finished upper.
  • a 'stay opener for seamed footwear uppers comprising a base plate having a slot-shaped passageway run ning theret-hrough, a splitter for separating the sections of each stay from each other located beneath said base plate and in alignment with said passageway, respective guide means disposed laterally of the entrance. end of said passageway and mounted for movement toward and away'from the center line of said passageway and each other for centering each stay relative to said splittergand gear means operatively connected with said guide means for selectively moving the same either jointly or separately.
  • a stay opener according to claim 1 further comprising movable means supporting said guide means, said gear means being operatively connected with said movable means.
  • a stay opener according to claim 1, further comprising a pair of plungers arranged at opposite sides of said passageway and carrying said guide means, respectively, and constrained to. axial sliding, non-rotary movement, and said gear means comprising a pair of spur gears screw-threaded onto said plungers, respectively, means for retaining said spur gears axially stationary, and an axially displaceable and rotatable operating rod extending transversely to said passageway and carrying a pair ofspaced pinions each axially wider than its associated one of said spur gears, whereby in three different axial positions of said operating rod eithersaid pinions are both in mesh with said spur gears, or one of said pinions is in mesh with that one of said spur gears associated therewith.
  • a stay opener according to claim 3 said plungers and said operating rod all being supported by said base plate.
  • a stay opener according to claim 4 further comprising a ramp guide supported by said base plate and bridging said operating rod in the vicinity of said entrance end of said passageway to prevent snaggingof the 6.
  • said splitter comprising a bar having flat top surface and a V-shaped front end facing said entrance end of said passageway,
  • said bar having a central longitudinal rib projecting from its top surface and extending rearwardly therealong from said front end, and the surfaces of both sides of the V at said front end of said bar'merging with a smooth curva-' lllll6 into the respective parts of said fiat top surfaces'at the opposite sides of said rib.
  • a splitter for use in a stay opener for seamed footwear uppers comprising a bar having a flat top surface and a V-shaped front end, said bar having a central longitudinal rib projecting from said top surface and extending rearwardly therealong from said front end, and the surfaces of both sides of the V at said front end of said ba-r merging with 'a smooth curvature into the respective parts of said flat top surface at the opposite sides of said rib.
  • a seamed footwear upper hold-down device for use in conjunction with a stay opener, comprising means providing an elongated narrow edge oriented lengthwise of the path of movement of a seamed pair of upper quarters for engagement in the seam notch of the opened pair of upper quarters, means pivotally supporting said edge means in the vicinity of the front end thereof, means connected to said edge means in the vicinity of the rear end thereof for adjusting the normal orientation of said edge, and spring means operatively connected with said supporting means and said adjusting means for yield ingly pressing said edge against a passing pair of opened upper quarters, said edge means further providing a pair of lateral Wings projecting to the opposite sides of said edge for engagement with the respective regions of said upper quarters adjacent to said seam notch.
  • a hold-down device said wings being oriented so as to be closer to said edge adjacent said rear end of the latter than adjacent said front end 11.
  • a hold-down device further comprising means mounting said supporting means for lateral movement out of the operating position in which said edge overlies said path of movement and into a nonoperating position, means for locking said supporting means against movement in either of said positions, and means for selectively rendering said locking means inactive to permit movement of said supporting means from either of said positions to the other.
  • Stay opening means for use in conjunction with a sewing machine for staying footwear uppers, comprising a base plate arranged in front of the needle area of the sewing machine, said base plate having a slot-shaped passageway extending therethrough in line with said needle area, a splitter located beneath said base plate and in alignment with said passageway for separating from each other the sections of each stay passing through said passageway, respective guides disposed laterally of the entrance end of said passageway and mounted for movement toward and away from the center line of said passageway and each other for centering each stay relative to said splitter, gear means operatively connected with said guides for selectively moving the same either jointly or separately, a hold-down plate disposed above said base plate, and having an elongated narrow bottom edge overlying and extending parallel to said passageway for engagement in the seam notch of each opened pair of upper quarters to be stayed and advancing through said passageway, means pivotally supporting said hold-down plate in the vicinity of the front end of said edge above said entrance end of said passageway, means connected to said hold-down plate in the
  • said splitter comprising a bar having a fiat top surface and a V-shaped front end facing said entrance end of said passageway, said bar having a central-rib projecting from said top surface and extending rearwardly therealong from said front end, and the surfaces of both sides of the V at said front end of said bar merging with a smooth curvature into the respective parts of said fiat top surface at the opposite sides of said rib, said splitter being supported by said base plate with said top surface and rib oriented at a slight upward pitch in the rearward direction of said base plate.

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US516425A 1965-12-27 1965-12-27 Stay opening machine for footwear Expired - Lifetime US3407420A (en)

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US516425A US3407420A (en) 1965-12-27 1965-12-27 Stay opening machine for footwear
BE717963D BE717963A (enrdf_load_stackoverflow) 1965-12-27 1968-07-11

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US516425A US3407420A (en) 1965-12-27 1965-12-27 Stay opening machine for footwear

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015004280B4 (de) 2015-04-08 2025-06-12 Leather Components Vertriebs-Ug (Haftungsbeschränkt) Verfahren zum automatisierten Nähen von Ziernähten

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1416998A (en) * 1920-07-28 1922-05-23 Singer Mfg Co Seam-margin-opening device for sewing machines
US1508449A (en) * 1919-07-10 1924-09-16 United Shoe Machinery Corp Seam-finishing machine
US1809460A (en) * 1928-11-13 1931-06-09 Metropolitan Sewing Machine Co Machine for making multiple seams
US1929380A (en) * 1932-02-01 1933-10-03 Boston Machine Works Co Seam pressing machine
US2311407A (en) * 1940-06-12 1943-02-16 Cluett Peabody & Co Inc Sewing machine attachment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1508449A (en) * 1919-07-10 1924-09-16 United Shoe Machinery Corp Seam-finishing machine
US1416998A (en) * 1920-07-28 1922-05-23 Singer Mfg Co Seam-margin-opening device for sewing machines
US1809460A (en) * 1928-11-13 1931-06-09 Metropolitan Sewing Machine Co Machine for making multiple seams
US1929380A (en) * 1932-02-01 1933-10-03 Boston Machine Works Co Seam pressing machine
US2311407A (en) * 1940-06-12 1943-02-16 Cluett Peabody & Co Inc Sewing machine attachment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015004280B4 (de) 2015-04-08 2025-06-12 Leather Components Vertriebs-Ug (Haftungsbeschränkt) Verfahren zum automatisierten Nähen von Ziernähten

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