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US2229444A - Shoe sewing machine - Google Patents

Shoe sewing machine Download PDF

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Publication number
US2229444A
US2229444A US272326A US27232639A US2229444A US 2229444 A US2229444 A US 2229444A US 272326 A US272326 A US 272326A US 27232639 A US27232639 A US 27232639A US 2229444 A US2229444 A US 2229444A
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US
United States
Prior art keywords
horn
sole
shoe
work
sewing
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
US272326A
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English (en)
Inventor
Elliott Harold Ernest
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.)
United Shoe Machinery Corp
Original Assignee
United Shoe Machinery Corp
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 United Shoe Machinery Corp filed Critical United Shoe Machinery Corp
Application granted granted Critical
Publication of US2229444A publication Critical patent/US2229444A/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
    • D05B15/00—Machines for sewing leather goods

Definitions

  • the present invention in one of ⁇ its several aspects, is concerned with the provision, in a sewing machine of the class referred to having mechanism for automatically causing a work support to rise and fall towards and away from the Work in timed relation to the formation of successive stitches, of a novel and convenient arrangement whereby the extent of the rising and falling movements imparted to the work support by such mechanism may be readily varied at any convenient stage during the sewing operation round a shoe to suit the particular conditions expected to be encountered at a portion (i. e. a iorepart portion or a heel end portion) 5 of the shoe which is then approaching the sewing instrumentalities.
  • the work support should engage the work yieldingly as it israised 10 by its actuating mechanism in order that it may the better accommodate itself to Variations in the thickness of the work. If, however, for this purpose, a spring is included in said actuating mechanism in order to cause such mechanism 15 itself to impart yielding movements to the work support, the result is likely to be obtained, particularly if the machine is run at relatively high speed, that the movements of ⁇ the work Ysupport lag behind the movements of its actuating 20 mechanism and this is likely to affect adversely both the results of the sewing operation and the smooth running of the machine.
  • the present invention is concerned with the .pro-x25 vision, in a shoe machine, of an arrangement ⁇ whereby actuating mechanism fora worksupport is of a ⁇ positive, non-yielding, character and wherein the work-engaging portion of ythe support is formed separately from the rest of the, ⁇ support and is mounted on it in a novel manner which allows it to yield relatively to the rest of the support when the latter is thrust towards the work by its actuating mechanism.
  • the present invention is concerned with the provision, in a shoe machine, of a work-entering vhorn which, in a portion which enters into the space between the upper and sole of a shoe at the forepart, is of a relatively thin construction so asl 40 to reduce any tendency for it to engage the shoe upper as it descends within the shoe and in which i the work entering portion is yieldingly supported on a lower portion of the horn at a region relatively remote from that part of the horn ⁇ which actually engages the work, the yielding mounting in this region both providing for a desired yield in the horn and making it easy to retain the horntip of the desired smalldimensions by avoiding the presence of any yielding device near the tip of the horn.
  • a workentering horn in a machine of the class referred to, is raised and lowered automatically in eachN cycle of the machine by a pivoted lever which is connected to it and which also has an adjustable connection with an oscillating cam-actuated lever.
  • the connection between said two levers comprises a block movable along slots in portions of both said levers which lie close together side by side and by moving the block along the slots in a direction away from the pivot for one of the levers and towards the pivot for the other lever, the range of the pivotal movement imparted, by the cam-actuated lever, to the lever which is connected to the horn may be varied, thus varying the extent of the rising and falling movements of the horn.
  • said block For enabling said block to be moved along the slots while the machine is actually sewing round a shoe, it is connected to one end of a link lying substantially ,parallel to the oscillating cam lever and close by the side of the latter.
  • the other end of said link is connected to one arm of a bell crank lever, the other arm of which ,is connected to a treadle 'by depression of which the block ⁇ can be vmoved along the slots in said levers, adjustable stop devices being Vprovided -for limiting the maximum and minimum movements of the horn as may seem most suitable for differing' kinds of work.
  • the throw of the ,horn may be varied while the machine is actually in operation during the sewing of a shoe and while the shoe is still being manipulated by the hands ofthe operator, thus providing a particularly convenient arrangement whereby, without it being necessary for the operator to interrupt the progress of the sewing operation or .to remove either of his hands from the shoe in Iorder to vary the movement of the horn, the throw .of the horn may be made suiiiciently small to avoidany tendency to pull the upper away from the sole dur- 40 ing the ,sewing around the forepart and whereby the throw may be increased as the sewing proceeds towards the heel end of the shoe, the throw eventually reaching such an extent as to allow the heel of the shoe topass over the horn tip vas the work is fed VAalong between successive stitches.
  • the work supporting horn of lthe present illustrative embodiment is an internal work-supporting horn of the usual curved or C shape, lbut the uppermost part of the horn, including the horn tip which actually bears against the work, is formed as a separate member from the lower part and is mounted -on it with a relatively large capacity for downward yield with a View particularly to avoiding undue compression of the work during sewing around the heel end while allowing the horn to grip the work with relative rmness against an upper sole-engaging foot when sewing around the forepart.
  • the separate upper part is -supported by a pair of short crank arms spaced apart -along the uppermost portion of the lower part, at positions relatively remote from the ⁇ horn tip, and rotatably mounted in bearings in the lower part.
  • a spring-pressed rod extending -upwardly from the lower part of the horn thrusts upwardly on the separate upper part between the two crank arms and normally maintains it in a raised position in which its supporting crank arms extend upwardly.
  • the lower Ipart of the horn is able to rise relatively to its work rengaging portion against the 7'5 thrust of said rod, t-he said crank arms meanwhile rotating in their bearings to allow of the relative descent of the work-engaging portion of the horn.
  • the capacity for yield thus afforded to the upper horn portion is such as to enable the horn tip to yield through a distance at least equal to :the thickness of the heel attached to the heel end of the sole and thus avoids the exertion of excessive pressure von the heel during the sewing round the heel portion.
  • the two crank arms are arranged in a non-parallel relation to each other and swing in somewhat different directions so as to allow the operative end of the work-engaging portion (i. e. the horn tip) to move down, relatively to the rest of the horn, in a substantially vertical path.
  • Figure 1 is a right hand side elevation, partly in section, of the illustrative -embodiment of the invention
  • Figure 2 is a right hand side elevation, partly in section, and on a somewhat larger scale of the work supporting horn shown in Figure 1
  • Figure 3 is a detail sectional view taken along the line 3 3 of Figure 1
  • Figure 4 is a detail plan view of a portion of the ⁇ horn actuating connections shown in Figure 1
  • Figure 5 is a detail view in rear elevation of certain parts shown in Figure 1.
  • the machine includes a curved hooked needle I of small radius which acts', after each penetration of the work, to move laterally to feed the work through the machine, an upper pressing claw 3 which rises and falls to press the upper margin against the sole at each side of the needle in timed relation to the work penetrating and retracting movements of the needle l and which moves to and fro with the needle along the line of work feed, a sole-engaging foot 5 for engaging the upper surface of the sole to determine the heightwise relation of the work .to the sewing instrumentalities when the work is pressed upwardly against it by the horn engaging the underside of the work, a pleater 'I for forming pleats in the upper margin in timed relation to the formation of successive stitches and an edge guide (not shown) for determining the fore and aft position of the work relatively to the sewing instrumentalities, such parts being similar in construction and operation to the parts described in the prior patent above referred to.
  • the present illustrative machine has projecting forwardly from the lower portion of its head casting a vertical bearing 9 in which is received a vertical sleeve li.
  • the sleeve HY embraces an inner sleeve i3 which is provided with a coupling screw I5 threaded into its lower end.
  • the screw CTI 'from the front).
  • a screw 55 which I5 has two spaced anges I1 which form a groove between them, in which groove are received flanged portions of the lower endy of the sleeve so that relative heightwise movement between the two sleeves takes place, as will hereinafer be described, on rotation of the screw I5.
  • the sleeve I3 forms a bearing for astem I9 which is mounted to reciprocate vertically therein and which has a work-entering horn 2
  • the stem I9 has an upper ⁇ portion 25 which is of somewhat less diameter than the lower portion and into which is threaded an adjusting screw 21, the screw 21 being split lengthwise to ensure a tight t into the portion 25.
  • the screw 21 (see Figure 2) is provided with a flange 29 which abuts against the lower side of a ball thrust race 3
  • the screw 21 extends upwardly beyond the flange through the center of the race 3
  • the sleeve I3 is maintained in xed heightwise position during the sewing operation and has a pair of rearwardly projecting lugs 36 (see Figures 1 and 5), a pin 31 passing across these lugs to provide a pivot for a bell crank lever having arms 39 and 4I.
  • the arm 39 extends forwardly through an elongated vertical slot 43 formed in the sleeve I3 and has a rounded end portion 45 which is received in a complementary recess formed in a block 41 which is freely mounted for a small degree of sliding movement in a direction fore and aft of the machine in a slot in the stem I9, the upper and lower sides of the block 41 bearing against the upper and lower sides of the slot.
  • of the bell crank lever extends upwardly and has a small groove formed in the left hand surface (as seen in rear elevation, Figure 5) into which groove extends a tongue 49 formed on a boss 5
  • a stud 65 having a head received in the slot 63 projects through the slot 51 zand forms a pivot for a block 61 which is received in the slot 51, these parts forming a suitable connection between the arm 58 and the lever 59 so that downward movement of the lever 59 will impart through the connections described an upward movement to the arm 39 of the bell crank lever which in turn will impart an upward movement to the stem I9 and therefore to the horn 2
  • the lever is connected at 59 to an upwardly extending rod 69 which is in turn pivoted toa lever 1
  • the block 91 and stud 65 are slidable forwardly and rearwardly'along the slots 51 and 63, and, as will readily be understood, by adjusting them forwardly along the slots (i. e. in a direction towards the pivot 31 and away from the pivot 6I) the rocking movement of the lever 59 about its pivot will be caused to impart vertical' reciprocations of relatively large extent to the horn 2
  • the slots 51 and 63 lie directly in alignment with each other side by side whatever be the position of the ⁇ block 61 and the stud 55 along the slots, this condition being obtained by initial adjustment of the screw I5 which raises or lowers the sleeve I3, together with the pivot 31, relative to the sleeve I I and to the pivot 6I to align the slots 51 and 63, the sleeve I I being normally stationary relative to the bearing 9 except as hereinafter described.
  • the arrangement therefore is such as to ensure that, whatever be the stroke of the horn 2
  • the stud 35 has pivotally connected thereto the forward end of a downwardly extending arm I1 of a bell crank lever which is pivotally mounted on a xed stud 'I9 extending crosswise of the machine.
  • This bell crank lever has a forwardly extending arm 3
  • of the bell crank lever moves by the side of a iixed guide plate having a plurality of holes formed in it one above the other.
  • a spring 89 connecting the bell crank lever to the machine frame serves to hold the arm 8
  • the sleeve In order to allow the horn 2
  • the bell crank lever has a rearwardly extending arm 99 to which is coupled the upper end of a treadle rod IDI connected to. a second treadle (not shown). Depression of this treadle will break the toggle and draw the sleeves and I3 downwardly and, since the actuating arm 39 for the horn 2
  • the operator guards against any tendency for the horn 2
  • the horn tip is able to yield downwardly relatively7 to the rest of the horn 2
  • itself is of the usual approximately C-shape as seen from the side and,in order to provide a vertical yield in the actual work engaging portion of the horn without giving rise to any possibility of any undesired yield in the horn actuating mechanism or making the operative end of horn bulky by reason of the inclusion of a yielding support for the horn tip at said opera tive end, the horn itself is formed of two parts.
  • (see Figure 2) is divided about mid-way of its length into an upper part
  • 09 each have a pair of holes formed in them (the nearer one of which is spaced some two inches away from the tip III and the further one of which is spaced some four inches away from the tip III), the holes being spaced apart along the flanges
  • the latter In order to maintain the upper horn part
  • 23 rests, at its opposite ends, in seats formed in the part
  • 03 has a hole
  • 21 serves to limit the extent to which the part
  • 03 are arranged to occupy such mutually angled relation to one another as to cause themovable part
  • 05 both to sink bodily,v ina somewhat ,outwardly inclined path, relatively to said part
  • I is arranged to extend,l when the-.part
  • a machine forsewing together a shoeV sole and the overlapping margin of an upper while Iunsupported by a last having, in combination, 5 stitch forming devices including a needle arranged to pierce the upper and sole in a plane substantially parallel to the surface of the sole, a -sole supporting horn adapted to extend within on the remaining portion of the horn.
  • a sole supporting ⁇ horn adapted to extend within the shoe, amember on which the horn is rlg- 25 idly mounted, a sole engaging foot against which the sole is pressed by the horn, and means actuated during each stitch-forming cycle to raise the member with the horn towards the foot and to lower the member and horn, said horn com- 30 prising a sole engaging tip portion mounted ⁇ to yield relatively to the remaining portion of .the horn as thesole is pressed against the foot by the horn.
  • ,stitch-forming devices including a needle ar-v -ranged to pierce the upper and sole in a plane substantially parallel to the surface of the sole, ⁇ a sole supporting horn having a generally lC-shaped body provided with a work engaging tip portion adapted to extend within the shoe',-;160
  • ⁇ stitch-forming devices including a needle are ranged topierce the upper and sole in a plane substantially parallel to the surface of the sole,
  • a sole supporting horn adapted to extend with- Astitch-forming cycle to raise and lower the memin the shoe, a sole engaging foot against which the sole is pressed by the horn, means acting during each stitch-forming cycle to raise and lower the horn towards and from the foot, means runder the control of the operator and operable during the continued operation of the stitchforming devices in sewing a seam for adjusting the amount of descent of the horn while maintaining constant the heightwise position of the horn when in raised position, said horn comprising a sole engaging tip portion mounted to yield relatively to the remaining portion of the vhorn as the sole is pressed against the foot by the horn.
  • a machine for sewing together a shoe sole and the overlapping margin o-f an upper while unsupported by a last having, in combination, stitch-forming devices including a needle arranged to pierce the upper and sole in a plane substantially parallel to the surface of the sole,
  • solesup'porting horn adapted to extend within the shoe, a sole engaging foot against which the sole is pressed by the horn, means acting during each stitch-forming cycle to raise and lower the horn towards and from the foot, and means under the control o'f the operator and operable ⁇ during the continued operation of the stitchforming devices in sewing a seam for adjusting the amount the horn is raised and lowered during each stitch-forming cycle.
  • a machine for sewing together a shoe sole and the overlapping margin of an upper While unsupported by a last having, in combination, stitch-forming devices including a needle arranged to pierce the upper and sole in a plane substantially parallel to the surface of the sole, a sole supporting horn adapted to extend within the shoe, 'a sole engaging foot against which the sole is pressed by the horn, a member on which the horn is mounted, means acting during each ber toV cause the horn to move towards and away ⁇ from the foot, said means including a slotted lever and connections adjustable along the slot to vary the extent of movement imparted to the horn carrying member, and means under the control of the operator and operable during the continued operation of the machine for adjusting the connections along the slot.
  • a machine for sewing together a shoe sole and the overlapping margin of an upper while unsupported by a last having, in combination,
  • stitch-forming devices including a needle arranged to pierce the upper and sole in a plane substantially parallel to the surface of the sole, a sole supporting horn adapted to extend within the shoe, a sole engaging foot against which the sole is pressed by the horn, a member on which the horn is mounted, a sleeve within which the member is slidingly received, an arm pivotally mounted on the sleeve and engaging the member, and means acting during each stitch forming cycle for rocking the arm to raise and lower the member relative to the sleeve and thereby to move the horn towards and away from the foot, said means comprising cam-actuated connections for rocking said arm, and means under the control oi the operator and operable during the continued operation of the machine for adjusting said connections to vary the extent of vertical reciprocation imparted to the horn.
  • a machine for sewing together a shoe sole and the overlapping margin of an upper while unsupported by a Alast having, in combination, stitch-forming devices including a needle arrangedto pierceV the upper andsolei in a plane substantially parallel tothe surface of the sole, a sole supporting-horn adapted to extend within the shoe, a sole engaging-foot against which the sole is pressed by the horn, a member on which the horn is mounted, and means acting during each stitch-forming cycle to raise and lower the member to cause the horn to move towards and away from the foot, said means including a slottedv arm operatively connected to the member, a slotted lever, means for rocking the lever, and connections between the slotted arm and the slotted lever' adjustable along the slots to vary thev extent of rocking movement imparted to the arm by the lever and thereby to vary the extent of movement of the horn carrying member, the slotted arm and the slotted lever being in parallel relationship when the horn is in raised position, ⁇ whereby said raised position is unaffected by 'adjust
  • a machine for sewing together a shoe sole and the overlapping margin of an upper while unsupported by a last having, in combination, stitch forming devices including a needle arranged to pierce the upper and sole in a plane substantially parallel to the surface of the sole, a sole supporting horn having a generally C- shaped body provided with a Work engaging tip adapted to extend within the shoe, a member to which the C-shaped body is rigidly secured, and a sole engaging foot against which the sole is pressed by the horn, the C-shaped body o1" the horn comprising portions yieldingly connected at a point remote from the tip to permit the horn tip to be yieldingly pressed against the sole.
  • a machine for sewing together a shoe sole and the overlapping margin of an upper while unsupported by a last having, in combination, stitch-forming devices including a needle arranged to pierce the upper and sole in a plane substantially parallel to the surface of the sole, a sole supporting horn having a generally C- shaped body provided with a work engaging tip adapted to extend within the shoe, a member to which the vC-shaped body is rigidly secured and a sole engaging foot against which the sole is pressed by the horn, the C-shaped body of the horn comprising relatively movable portions, and meansyieldingly 'connecting said portions to permit the ltip to be yieldingly pressed against the sole without lateral displacement relative to the sole.
  • a machine for sewing together a shoe sole and the overlapping margin of an upper while unsupported by a last having, Vin combination, stitch-forming devices including a needle arrangedto pierce the upper and sole in a plane substantially parallel tothe rsurface of the sole, a C-shaped sole supporting horn comprising a lowerportion and a relatively movable upper portion provided with a work 'engaging'tip adapted to extend within 'theshoe, and a sole engaging foot against vwhich the 'sole is pressed by the horn, connectionsbetween said portions permit- ⁇ ting vertical 4movement of the tip substantially without lateral displacement relative to the sole, and adjustable yielding means for resisting downward movement of the upper ⁇ portion of the horn relative to the lower portion.
  • a machine for sewing together a shoe sole and the overlapping r ⁇ margin ⁇ of an upper while unsupported by a last having, in combination, stitch-forming devices including a needle arranged Vto Vpierce lthe 'upper and sole in a plane substantially parallel to the 'surface of the sole, a C-shaped sole supporting horn comprising a lower portion and an upper portion provided with a. work engaging tip adapted to extend within the shoe, and a sole engaging foot against which the sole is pressed by the horn, connections between the portions comprising a pair of cranks disposed at an angle to one another and adapted to rock upon movement of the upper portion of the horn relative to the lower portion to cause the tip of the horn to move in a vertical direction substantially without lateral displacement.
  • stitch-forming devices including a needle arranged Vto Vpierce lthe 'upper and sole in a plane substantially parallel to the 'surface of the sole, a C-shaped sole supporting horn comprising a lower portion and an upper portion provided with a. work engaging
  • a machine for sewing together a shoe sole and the overlapping margin of an upper while unsupported by a last having, in combination, stitch-forming devices including a. needle arranged to pierce the upper and sole in a plane substantially parallel to the surface of the sole, a C-shaped sole supporting horn comprising a lower portion and a relatively movable upper portion provided with a shoe entering tip adapted to extend within the shoe, and a sole engaging foot against which the sole is pressed by the horn, connections between said portions permitting vertical movement of the tip substantially without lateral displacement, means yieldingly resisting downward movement of the tip of the horn, and means positively limiting the upward movement of the tip portion relative to the lower horn portion.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US272326A 1938-06-17 1939-05-08 Shoe sewing machine Expired - Lifetime US2229444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17990/38A GB515964A (en) 1938-06-17 1938-06-17 Improvements in or relating to sewing machines or to work supports suitable for such or other machines

Publications (1)

Publication Number Publication Date
US2229444A true US2229444A (en) 1941-01-21

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US272326A Expired - Lifetime US2229444A (en) 1938-06-17 1939-05-08 Shoe sewing machine

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US (1) US2229444A (de)
BE (1) BE434887A (de)
FR (1) FR856370A (de)
GB (1) GB515964A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526760A (en) * 1947-12-10 1950-10-24 United Shoe Machinery Corp Sewing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526760A (en) * 1947-12-10 1950-10-24 United Shoe Machinery Corp Sewing machine

Also Published As

Publication number Publication date
GB515964A (en) 1939-12-19
BE434887A (de)
FR856370A (fr) 1940-06-12

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