US3335683A

US3335683A - Shoe sole binding machines

Info

Publication number: US3335683A
Application number: US434204A
Authority: US
Inventors: Fordyce I Williams; Kenneth R Bernard
Original assignee: Individual
Current assignee: Individual
Priority date: 1965-02-23
Filing date: 1965-02-23
Publication date: 1967-08-15
Anticipated expiration: 1984-08-15

Description

Aug 15, 1967 F. wlLLiAMs ETAL. 3,335,683

SHOE SOLE BINDING MACHINES 2 Sheets-Sheet l Filed Feb. 25, 1965 Aug. 15, 1967 F. l. WILLIAMS ETAL 3,335,583

SHOE SOLE BINDNG MACHINES Filed Feb. 23, 1965 2 Sheets-Sheet 2 United States Patent O 3,335,683 SHOE SOLE BINDING MACHINES Fordyce I. Williams, Sleepy Hollow Road, Atkinson, N.H. 03811, and Kenneth R. Bernard, 3 North Ave., Plaistow, N.H. 03865 Filed Feb. 23, 1965, Ser. No. 434,204 8 Claims. (Cl. 112-137) ABSTRACT F THE DISCLOSURE An apparatus for attaching a binding tape to the edge of articles wherein a feed roll feeds a flat tape through curved folding guides to and over the edge of an article, sewing the tape to the edge of the article by a sewing machine which feeds the tape as it sews, and a cutter to sever the tape supply from the article. A foot treadle is operated to initiate the operation of pneumatic devices mechanically connected to the feed roll and cutter to operate the same in timed sequence. After severing the tape, the feed roll feeds the tape to the next article.

This invention relates to apparatus for attaching a binding strip to the edge Vof an article. More particularly the invention involves devices for cutting and feeding a tape to a sewing machine which sews the tape to the edges of shoe inner soles.

The invention is directed to an attachment for a heavy duty sewing machine for sewing the binding tape to the edge of shoe inner soles. The use of such attachments, as are presently employed, require much more manual labor than does applicants attachment. Devices presently in use require the following steps: First the manual feeding of the tape between stationary guides by pushing and probing the tape to the sewing machine feed, foot and needle. Second, the manual guiding of the sole while the tape is being sewed to the edge of the inner sole. Third, manually cutting off the end of the tape b-y either scissors or a pivoted knife. And fourth, the manual feeding of the cut end of the tape by prying and probing said end into proper position for the sewing of said end to the next inner sole. The feeding of said cut end of the tape into position for sewing is at present a time consuming operation occurring after the binding of each inner sole. The operator first must guide the sole so that the sewing of the trailing end of the tape to the previous inner sole is completed and then pry, probe and push the tape supply so that the fresh cut end will be in position to receive the next inner sole for sewing.

In the use of the present invention, the tape is fed by the sewing machine feed and the sole manually held and guided, by the operator as at present, however when the sewing of the tape to the sole is nearly completed the operator using the new device merely trips a foot treadle which causes pneumatic means to operate two devices in timed sequence. The first device cuts the tape and the second automatically feeds the cut-off end of the tape into position to receive the next inner sole and stops. During the operation of the automatic feed, the operator has both hands free to guide the final sewing of the end of the tape to the inner sole.

The principal object of the present invention is to provide a substantially automatic preliminary feeding apparatus for feeding a tape to a sewing machine for attachment to inner soles.

Another object of the invention is to provide apparatus whereby the initial feeding of the tape to sewing position is greatly facilitated and much of the manual manipulation now required for such initial feeding is eliminated.

The numerous features and advantages of the inven- Patented Aug'. 15, 1967 tion will be described in more detail in connection with the accompanying drawings of one embodiment and particularly pointed out in the claims.

In the drawings: FIGURE 1 is a perspective view of the tape cutting and feeding attachment for a sewing machine, the control elements being indicated conventionally and the sewing machine omitted.

FIGURE 2 is a top view of the tape cutting and feeding devices and their vari-ous operating parts.

FIGURE 2a is a detail of the extreme left end of a portion of FIGURE 2 showing the abutment 48 and guide portion 49.

FIGURE 3 is a front view taken from the lower end of FIGURE 2 and showing portions of the sewing machine and its relationship to applicants apparatus.

FIGURE 4 is an end View taken from the left of FIG- URE 2 and showing the cutter actuating means only.

Referring to the various figures in the drawings, the base plate to which the dilferent units of' applicants device are attached is shown at 1 in FIGURES 1, 2 and 4. To said base plate, the various supporting brackets 2, 3 and 4 are iixedly attached as shown particularly in FIG- URE 1.

THE FEED UNIT Brackets 2 and 4, as shown in FIGURES 1, 2 and 3, support the feed unit which includes a pneumatic cylinder 5, one end -of which is pivotally mounted on the top end of bracket 2 by a vertical stud 6. The cylinder S has a reciprocable piston therein, not shown, attached to a piston drive rod 7, which rod has a connecting element 8 adjustably mounted at 9 to the drive rod 7. Bracket 4, which is substantially channel shaped in cross-section (FIGURE 1), has a lower arm 19 of the channel attached to base plate 1, and the upper arm 11 of the channel overhanging said lower arm 1U. A shaft 12 is vertically journaled in the arms 10 and 11 of the bracket, and extends beyond the lower arm 10i. Between the arms of the bracket 4, the shaft 12 carries an inner portion 13 of sprag, or one-way clutch 16, having a ring 14 with an arm 15, (FIGURES l and 2) adjustably attached to the inner portion 13 of the sprag clutch. The other element of the sprag clutch 16 is fixed to said shaft 12. The outer end of the ring arm 15 is pivotally connected at 17 to the outer end of the connecting element 8. As the piston drive rod 7 is reciprocated by air pressure in cylinder 5, the arm 15 and ring element 14 is oscillated, rst in a clockwise direction, and then in va counterclockwise direction, to drive the one element 13 of the sprag clutch 16, first in one direction and then the other. The other element of said sprag clutch 16 drives the shaft 12 in one direction only. Fixedly attached to the shaft 12, below the sprag clutch 16, is a relatively large gear 18 which is driven by the shaft 12 as the shaft is moved in said one direction. Beneath the lower arm 10 of the bracket 4, a lever 19 (FIGURES l and 3) having its inner end 20 journaled on the shaft 12, and the outer end 21 drilled to journal, a stub shaft 22. 'I'o the top end of stub shaft 22 is fixed a pinion gear 23 which meshes with the teeth of the large gear 18. On the lower end of the stub shaft 22 is attached a friction drive wheel 24, arranged to contact a tape, not shown, which tape is to be fed by said friction drive wheel 24 toward the left, as shown by the arrow in FIGURE 3. The outer end 21 of the lever 19 is urged toward said tape by spring 25, attached at one end to the base plate 1 and at the other end to said lever end 21. Iournaled in said base plate 1, to oppose said friction drive wheel, and in contact with the tape, is a freely rotatable abutting roller 26 (FIGURE 2). The tape is fed from right to left in FIGURE 3 between inner and outer guide elements 27 and 28 xed to the base 1. The inner guide 27 has a convex surface, and the outer guide 28, has a complementary concave surface.

THE CUTTER UNIT Bracket 3, fixed to the base 1, carries yoke 30. A second pneumatic cylinder 31 has its rear end 32 pivotally journaled in the yoke 30 by a horizontal pin 33. This cylinder 31 contains a piston, not shown, attached to a piston rod 34 extending from the forward end 35 of the cylinder 31. The outer end lof the piston rod iixedly carries a block 36. The base 1 also has attached thereto, as shown in FIGURE 4, a support 39, and a knife-carrying lever 40 is pivoted at one end to said support 39 by a pivot pin 41. The knife-carrying lever 4t) has an adjustable cutter blade 42 on its end further-most from the pivot pin 41. Between the pivot pin 41 and the cutter blade 42, the knife-carrying lever 4t) is supported pivotally -by a pivot 43 on the forked lever 37.

When air pressure is connected to the rear end of cylinder 31, the piston rod 34 is moved outwardly of the cylinder 31 and through block 36, and forked lever 37, the knife-carrying lever 40 is activated to move the cutter blade 42 down. At the end of the downward stroke of the knife lever, the air to the rear end of the cylinder is cut olf and air is admitted to the forward end 35 of the cylinder, and the linkage returns the cutter blade to upper retracted position.

The guide elements 27 and 28 are attached to a guide plate member 46 which is mounted on the base 1 as shown in FIGURES 1, 2 and 3. These guides have transverse yslits therethrough at 44 to accommodate the cutter blade. The guides also are cut away at 45 (FIGURE 1), to provide a space through which the friction drive wheel 24 and the abutting roller 26 (FIGURE 2) can contact the tape to feed it from right to left in FIGURE 3. The guides 27 'and 28 extend beyond the guide plate member 46 (FIGURE 2), -and the ends of the guides 27 and 28 form a 45 angle at 47 through which the tape is fed. A portion of the guide plate member y46 extends beyond the base 1 and lies within the concavity of the guide elements 27 and 28. The portion of the guide plate mem-ber within the concavity, forms an abutment 48 and the guide plate edge 49 beyond the abutment 48, forms a clearance space as it extends angularly toward the base 1.

Numeral 50 in FIGURE 1 is a commercial pneumatic pressure supply and timing device which device is connected -by tubes 51, 52, 53 and 54, to the forward and rearward ends of cylinders and 31 `as diagrammatieally shown in FIGURE l. Said pneumatic supply and timing device is operated through a link 56 connected to a foot treadle 55 usually located on the floor beneath the sewing machine.

A portion of the sewing machine is shown diagrammatically in FIGURE 3 at 57, and the position of the sewing machine needle is indicated generally at 58, in FIG- URES f2 and 3. The feed foot of the sewing machine is indicated at 59 in FIGURE 2.

Applicants device is attached to the base of the sewing machine by screws 60 extending through plate 46 (FIG- URES 1 and 2),V the said plate 46 having been fastened to base 1.

OPERATION The tape, which may be cloth, leather, plastic or other material, is originally fed into applicants device manually in the direction shown by the arrow to the right in FIGURE 3. It passes between the guides 27 and 28, between the abutting roller 26, and the friction drive Wheel 24, across the slits 44 in the guide elements, and outwardly beyond the angnilar ends of the guide elements.

With the tape in this position, the foot treadle S5 is actuated, and the pneumatic supply and timing device operates first to force air into the cylinder 31 at its rear end 32 as shown in FIGURE l. The piston rod 34 is driven outwardly and through linkage 37 and 40, the knife or cutter 44 is moved downwardly to cut off the initial end of the tape which is thrown away las waste. The air is then exhausted from the rear end of the cylinder 31 while a charge of air is introduced to the forward end of said cylinder 31 to retract the cutter. The cutter having been retracted, air is introduced .to the rear end of cylinder 5 at 51, and piston drive rod 7 is forced outward, in FIG- URE 1, actuating through connectingelement 8, ring arm 15 (FIGURES 1 and 2), sprag unit 13 and 16, large gear 18, pinion gear 23 and friction drive wheel 24. During this stroke of the piston drive rod 7, the friction drive wheel 24 is driven counter-clockwise. Said friction drive wheel 24, being urged by spring 25, presses against the tape which is in turn backed by abutting roller 26, and the rotation of the friction drive wheel 25 feeds the tape in the guides to the left, FIGURE 2, until the cut end of the tape projects beyond the diagonal ends of the guides. At this point, the air pressure to the rear end of cylinder 5 is released and air pressure admitted to the forward end of cylinder 5 at 52 which moves the piston drive rod 7 to the rear in FIGURE l, and through elements 8, 14 and 15, allows the spr-ag element 13 to move back to ini- -tial position. This action, having been accomplished, the operation of applicants device automatically stops. The operator presses an inner sole edge against the projecting end of the tape and starts the `sewing machine to sew the tape to the edge of .said sole. During the sewing, the regular sewing machine feed feeds the tape, and the operator holding the sole, pivots it about abutment 48 of plate 46 so that the tape will always be sewed to the edge of the inner sole and the stitching will be equidistant from the edge of the sole. When the tape has been sewed substantially, completely around the edge of the sole, the operator presses the treadleSS, which again initiates the operation of applicants device, to first cut the tape and then -feed ythe cut end into position for the next inner sole. While applicants device is operating, the trailing end of the tape is being sewed to the first inner sole which is then put aside as finished `and the operator starts sewing the tape -on the next inner sole.

From this oper-ation, it is obvious that the operators work is greatly facilitated and his attention is primarily directed merely to the sewing of the tape to the inner sole. With applicants device, the sewing of tape to the inner soles is a substantially continuous operation without any interruption such as is necessary in the operation of present devices.

We claim:

1. In combination with a sewing machine, a tape cut off and feed device comprising, a base; tape guides on said base; portions of said guides being cut away to provide for feeding and cutting said tape; a friction feed element; means mounting said friction feed element to yieldingly urge it into a cutaway portion of the guide means; means for actuating said friction feed element intermittently in one direction; cutter means; means mounting said cutter means on said base forwardly of said friction feed element; and means for operating said cutter means into and out of a cut-away portion of the guide means.

2. The combination of claim 1 wherein there is provided a means connected to both the cutter operating means and the friction feed element operating means for first operating said cutter operating means and then operating said friction feed element operating means in sequence.

3. In combination with a sewing machine, a tape cut olf .and feed device comprising a base; tape guides attached to .said base; there being portions of said guides cut away to provide for feeding and cutting of said tape; a friction feed wheel; means mounting said feed wheel to yieldingly urge it into a cutaway portion of the guides; means for rotating said feed wheel intermittently in one direction; ia cutter; means mounting said cutter on the base; means for operating said cutter into and out of a cut-away portion of the guide means to cut the tape; a timing device; and means connecting said timing device to the cutter operating means and the feed wheel rotating means to first operate said cutter tand then rotate said feed wheel.

4. The combination of claim 3 wherein there is a movable abutment; means mounting said movable abutment on the base in opposed relation to the feed wheel; and said means for rotating the feed wheel and the means for actuating the cutter include separate pneumatic cylinders; and separate means connecting one of the pneumatic cylinders to the feed wheel rotating means and the other pneumatic cylinder to the cutter operating means.

5. The combination of claim 4 wherein the movable abutment is a freely rotatable roller.

6. In a shoe sole binding machine, the combination with a sewing machine having a reciprocating needle and a feed means; a binding tape feed and cutting means including an intermittently operated feed roller; and means for operating the same; complementary curved feed guides; said feed guides provided with an aperture through which the feed roller projects to contact and feed the tape; a cutoff device and means for reciprocatably o-perating the same to cut off the tape while it is held between the guides; said guides having an angular .surface arranged to abut the sole and `guide the sole and tape to the sewing machine feed means and needle; timing means to rst operate the cutting device and then operate the feed means in sequence, and then cease operation during the sewing of the tape to the sole; and means to control the starting of the operation of the cutoff and feed roll means.

7. In combination with a sewing machine, a tape cut off and feed device comprising, a base having an edge; means mounting said base to the base plate of a sewing machine; tape guides having interior complementary concave and convex surfaces; means attaching the tape guides to the edge of the base; said tape guides extending from adjacent the needle of the sewing machine rearwardly of the direction of feed of the tape; a pivoted cutter, means mounting said cutter on the base at a position rearwardly of the end of the guides adjacent the needle of the sewing machine, said cutter passing through said guides transversely thereof; first pneumatic drive means, supporting means for the pneumatic drive means attached to the base and means connecting said pneumatic means to the cutter to operate the same; a feed wheel having a circumferential friction surface; means mounting said feed wheel beside said guides rearwardly of the pivoted cutter to project through said guides; a freely rotatable abutment r-oll, the circumferential surface of which opposes the circumferential surface of the feed wheel; means mounting said abutment roll on the base; a second pneumatic drive means; means mounting the second pneumatic drive means on the base; means connecting said pneumatic drive means to the feed wheel including clutch means preventing rotation of the feed wheel in one direction and causing rotation of the feed wheel in the other direction; timing means connected with said rst and second pneumatic drive means to cause the operation of the cutter and then the operation of the feed wheel in timed relation, and a foot treadle to operate the timing means.

8. In a combination with a sewing machine, a tape cut off and feed device comprising, a base plate having an edge; means mounting said base plate on the base of a sewing machine; tape guides having complementary concave and convex surfaces, said guides being discontinuous to provide two sets of openings; means mounting said tape guides on said edge of the base plate; a friction feed wheel; a lever; a stud shaft; means rotatably mounting said stud shaft on one end of the lever; means fixedly attaching the friction feed wheel to one end of the stud shaft; a pinion gear; means xedly attaching said pinion gear to the other end of the stud shaft; a spring; means connecting one end of the spring to the base plate, and the other end to said one end of lsaid lever, to cause the friction feed wheel to project through one set of guide openings; a channel shaped bracket; means mounting one end of said channel shaped bracket on the base plate adjacent said edge, the other end of said channel shaped bracket overhanging said first end; a shaft; journals in the ends of said channel shaped bracket for supporting said shaft; means rotatably mounting the other end of said lever on the lower end of said shaft; a drive gear; means fixedly attaching the -drive gear to said shaft to rotate therewith; the teeth of the drive gear meshing with the teeth on the pinion gear; a one-way clutch including a drive element and a driven element; means fixedly attaching the driving element of the clutch to the shaft; a ring having an arm thereon; means journaling said ring on said shaft; means attaching said ring to the driven element of the clutch; a cylinder; means on the base pivotally supporting said cylinder at one end; a piston and piston rod operating in said cylinder; a pivot -connecting the arm to the outer end of the piston rod; air pressure and timing means; means connecting the opposite ends of the cylinder to said air pressure and timing means; a second cylinder; means on the base pivotally supporting said second cylinder; means connecting the opposite ends of said second cylinder to the air pressure and timing means; a second piston and piston rod in said second cylinder; a forked member; adjustable means connecting s-aid forked member to the outer end of the second piston rod; a cutter bar; means pivotally supporting said cutter bar at one end on lthe base plate; a cutter; means fXedly attaching said cutter to the other end of the cutter bar; a link; means pivotally connecting one end of the link to the forked member; means iixedly connecting the other end of the link to the cutter bar intermediate its ends; said cutter moving through the second set of openings in the guides; one end of said guides forming an acute angle; a guide plate; means attaching said guide plate to the base; said guide plate having a fiat portion extending into the acute angle of the guide, a guide abutment and a receding portion beyond said abutment; said cutter being located adjacent the acute angle portion of the guides and friction feed wheel being located rearwardly of the cutter device.

References Cited UNITED STATES PATENTS PATRICK D, LAWSON, Primary Examiner.

Claims

1. IN COMBINATION WITH A SEWING MACHINE, A TAPE CUT OFF AND FEED DEVICE COMPRISING, A BASE; TAPE GUIDES ON SAID BASE; PORTIONS OF SAID GUIDES BEING CUT AWAY TO PROVIDE FOR FEEDING AND CUTTING SAID TAPE; A FRICTION FEED ELEMENT; MEANS MOUNTING SAID FRICTION FEED ELEMENT TO YIELDINGLY URGE IT INTO A CUTAWAY PORTION OF THE GUIDE MEANS; MEANS FOR ACTUATING SAID FRICTION FEED ELEMENT INTERMITTENTLY IN