US2670701A - Shoe sewing machine - Google Patents

Shoe sewing machine Download PDF

Info

Publication number
US2670701A
US2670701A US79484A US7948449A US2670701A US 2670701 A US2670701 A US 2670701A US 79484 A US79484 A US 79484A US 7948449 A US7948449 A US 7948449A US 2670701 A US2670701 A US 2670701A
Authority
US
United States
Prior art keywords
needle
thread
work
loop
shuttle
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
US79484A
Other languages
English (en)
Inventor
Ashworth Fred
Joseph R Ioannilli
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
Priority to US79484A priority Critical patent/US2670701A/en
Application granted granted Critical
Publication of US2670701A publication Critical patent/US2670701A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B15/00—Machines for sewing leather goods
    • D05B15/02—Shoe sewing machines
    • D05B15/04—Shoe sewing machines for lock-stitch work

Definitions

  • the present invention relates4 to sewing machines intended primarily Yfor the manufacture of shoes and moreparticularly to improvementsin a' hook needle lockstitch machine of the McKay type havinga rotaryshoe entering horn.
  • Illustrative machines .of this type are disclosed in. United States Letters Patent No1. 1,885,921; granted November 1 1932011 application of B; 'IL Leveque and No. 2,331,118,v granted October 5, 1943 onapplication of J Gouldb ourn et al. and in an application for United States Letters Patent Serial l-l o; '732,903, filed March 6, 1947 in the name of H, Boothroyd .(now United States Letters Paten-t No. 2,525,858; granted October 1 '7,- 1950);
  • the machines of the patents above referred to, inaddition toa hookneedle, have a shuttle or loop taker at the saine sideof th'e Workas the needle and, at theoppositeideof the Work,.a take-up arid a needle threading device; within the tipi end or the'rotary horn.
  • Inthe Gouldbourn machine thread measuring mechanism' also is provided for pulling from the supply an amount of thread sufficient' for each stitch.' In order to enable the needle to -be threaded and withdrawn from the Work without causing injury to the th-read as'.
  • lt is an object of. the present invention vto simplify the construction and to improvej the mode of operation ina shoe sole sewing machine of the type above referred v to andtoso arrange the worl clamping and feeding devices that aV ShQe 4beine operatedupon may be presented t0 the sewing devicesj and directed during operation c f the machine more easily than heretofore and inv a mannerwhichwill be .conducive to accurate spacingof the stitches While retaining ,all of, the advantages Ofthread handling precedures at,- tainabl-,e in the prio-r patented machines.
  • a further @bienv Ozf' theinvention is,v toiprovide a nevel and cffectiveconstructiqn of McKaytype shoe sewing machine capable ci. operation athigh Speeds; in which the;Visibilityattthehont ,of sewingoperations,is'gr'eater than in machines of similar construction and in whichthe: parts are less subject to1 brealage, Wear, irregularityjn operation or the' necessity of frequent adjustmeflt.' v Y In its preferred'form the machine' constructed according to ⁇ ther .features of the presenti ini/ene tiomincludes ahook needle and a presser fo'o't at one side ⁇ of the' work.
  • the shoe sole is pierced, in the illustrated machine, by an awl mounted for movement along the line of feed in fixed spaced relation to the needle.
  • the awl in the illustrated machine serves only to pierce the sole against the support of the horn.
  • the needle has imposed on it an idle lateral movement along the line of feed after it disengages the work.
  • the needle is spaced along the line of feed a fixed distance from the awl more than the length o a stitch and the idle lateral movement of the needle makes up the difference between the length of the stitch and the spacing between the needle and awl.
  • the feeding movement of the needle may be increased or decreased without necessitating a change in the fixed spacing distance between the needle and awl, as required in the machine of the Gouldbourn et al. patent.
  • An important object of the invention therefore is to eliminate from a shoe sole sewing machine of the type under consideration, the usual takeup for pulling each needle loop oi the shuttle, and even to avoid entirely the necessity of utilizing a regular take-up in this type of machine.
  • a shuttle may be employed which is large enough to carry the needle loop about a locking thread supply of any desired capacity within practical limits.
  • the machine of the present invention is equipped with a multiple beak shuttle or loop taker acting to draw each loop of thread through the work while a previously formed loop of thread is retained on another beak of the shuttle.
  • a multiple beak shuttle enables the loop previously formed to be controlled while being contracted at a rate determined by the extension of the succeeding loop, the thread being drawn from the previously formed loop through the work and along the undersurface of the work where it engages the horn. In this way the shuttle or loop taker acts as its own take-up.
  • each beak is brought into position for reception of a loop of thread in regular sequence.
  • the illustrated shuttle is driven by a gear train at a rate less than one complete rotation during each sewing cycle and in order to coordinate the movements of the shuttle with the other stitch forming devices, in this feature of the machine, a variable speed device is employed in the gear train to accelerate the shuttle as each beak receives its loop and to decelerate the shuttle thereafter.
  • the use of a variable speed device is particularly effective in a hook needle sewing machine to enable proper timing of the other stitch forming devices.
  • this feature of the invention cooperates in an advantageous manner with the feature embodied in the needle feed since with the needle feed each stitch being formed is carried away from the end of the horn where the work clamping pressure is being exerted and the pull on the thread exerted by the shuttle tends t0 lift the work and facilitate sliding movement of the thread along the underside of the work between the horn and the work. Also, if a shuttle of greater diameter than usual is employed the pull of the thread exerted thereby has a component which assists the feed and facilitates easy movement of the work through the machine.
  • FIG. 1 is a view in front elevation of the upper portion of a shoe sewing machine embodying the features of the present invention
  • Fig. 2 is a view in right side elevation of the sewing head of the machine of Fig. l on an enlarged scale partly broken away with the frame the horn to clear the horn during lateral needle movement and is detained while engaging the shoe within the substance of the shoe sole as it is shifted laterally away from the needle receiving opening in the horn the length of a stitch.
  • the needle and'awl carriers 4 and I0 are in the form of bowed arms provided with elongated hubs supported to oscillate about the same axis within tubular bearings I8 and 20,best shown in Figs. 16, 17 and 18.
  • the outer ends of the bearings are clamped to the machine frame by bolts 22 (Fig. 2) andthe bearing I8 has laterally extending ears between which is fulcrumed a fork ended feed lever 24 (see Figs. 19, 20 and 2l).
  • the fork end of the lever 24 surrounds a block 26 rotatably mounted on a pivot 28 clamped in one end of an eye-headed spindle 30 passing through the hubs of the needle and awl -carrier arms 4 and I0, the arms being retained against relative movement lengthwise of the spindle.
  • the needle and awl are mounted with a fixed spacing between each other along the line of work feed at a distance at least the length of the longest stitch which the machine is called upon to insert.
  • the mechanisms for actuating the feed lever 24 comprise a link 32 pivotally connected at 33 to the rearward arm of the feed lever. At its other end the link 32 is connected by a central pivot 34 to a pair of links 3B and 38.
  • the link 36 comprises a part of an adjustable feed mechanism which imparts the actual work feeding movements to the needle. To provide adjustment for the feeding mechanism the link 36 has secured in it a bolt 4I! ⁇ clamped within an arcuate slot 42 in an arm 44 secured to a vertical shaft 46..
  • the shaft 4B is'rotatably mounted in the machine frame and in turn has secured to it a cam arm 48 provided with a roll 58 engaging a slot 52 in a cam 54.
  • the cam 54 is fixed to a vertical cam shaft 56 rotating in unison with a main sewing shaft l58.
  • the curavture of the arcuate slot 42 in the arm 44 is such that it is concentric with the central pivot 34 when the needle moves into alinement with the awl perforation and4 while the needle is in its fully fed position.
  • the bolt 40 is loosened and moved along the slot 42 it increases or decreases the -effective length of the lower arm of lever 44 and varies the shifting movement of the needle while in engagement with the work.
  • the path of the needle point describes an outline similar to that indicated at BIJ in Fig. 22.
  • the path 6u shows no idle lateral movement-of theneedle and all of the lateral movement occurs while the threaded needle hook is detained within the substance of theiwork in the Aform ofA a shoe sole 62. If the bolt 4i) is adjusted to an intermediate position as in Fig. 21 along the slot 42 the path of the needle point will be similar to that indicated at 64.
  • the needle withdraws from the opening in the horn, is detained along the portion 86 of the path, is withdrawn from the sole B2 and is shifted idly along the seam line out of engagement with the sole through the portion 68 of the path E4 to bring the awl into alinement with the needle opening in the horn for a new stitch.
  • the length of the slot 42 is made sufficient to take care of the maximum desired length of stitch.
  • a perforated spacer 10 having radial openings 12 (see Figs. 17 and 18).
  • the spacer is mounted on the spindle 30 and has laterally projecting lugs 'I4 entering slots in a pair of sleeves 'I6 and 'l disposed between the spindle 35 and the hubs of the carrier arms 4 and I0.
  • the sleeve 'I6 is internally threaded to engage threads formed near the eye-headed end of the spindle 30.
  • the other end of the spindle is threaded for a pair of check nuts 'i8 which act to clamp the two sleeves against the spacer and retain the spindle, sleeves and spacer in fixed position relatively to each other.
  • the sleeves 1E, 'Il also are provided with flanges at their outer extremities, engaging loosely with the hubs of the carrier arms, so that when the Sleeves are clamped against the spacer the carrier arms are free to turn.
  • the threaded sleeve 'I6 may be rotated by engaging a pin wrench within one of the radial holes in the spacer, thus changing the alinement of the needle and awl with the opening in the end of the horn 6.
  • the needle and awl carrier arms 4 and I0 are formed with laterally projecting lugs 80, 82 engaged by radial slots projecting from the hubs of a pair of cam levers 84 and 86.
  • the hubs of the cam levers 84 and 36 are rotatably mounted on the outside surfaces of the bearings I8 and 20, respectively. 'I'he cam levers have rolls engaging slots at opposite sides of a cam 88 secured to the main sewing shaft 58.
  • the arrangement of the lugs ⁇ 8l) and 82 in the slots of the levers 84 and 86 enables the carrier arms to move laterally in the direction of feed while being actuated toward and from the horn.
  • the needle is acted upon close to its point of engagement with the work by an arm 89 through which passes a stud 9B rotatably mounted in the needle carrier arm I0.
  • the arm 89 is formed in two parts secured together, in one of which the stud 90 is secured and which has an upwardly projecting finger slidably engaging the left side of the needle carrier arm I0.
  • the other part of the arm 89 has a forwardly projecting portion engaging the needle on the right side and moves along the needle during entry of the needleinto the work.
  • the needle engaging arm is yieldingly maintained in a position close tothe needle hook While the needle is disengaged from the work.
  • the arm To holdv the needle engaging arm 89 in this position the arm is connected by a tension spring 92 stretched between the arm and the needle carrier arm I0. To limit the movement of the needle engaging arm 89A it carries a set screw 94, the head of which engages the carrier arm I when the needle is disengaged from the work. As the needle approaches thework, the arm 89 contacts a step surface 95 (see Figs. 22 and 23) on the presser foot I4 which holds the arm 89 stationary during the continued Work entering movement of the needle.
  • the illustrated machine is equipped at the side of thev work with the needle, with amultiple beak shuttle or loop taker,A best shown at 90 in Figs. 6 and 7..
  • the shuttle 98 has four beaks formed by slots cut between driving teeth
  • the formation of the slots between the teeth constitutes what is commonly known as a deep tooth shuttle or loop taker and enables the thread ina needle loop passing over the shuttle to ride beneath the teeth of a driver gear
  • the multiple beaks on the shuttle enable one beak to receive a loop of thread from the needle while another beak retains control of the previously formed loop of thread in regular sequence.
  • the shuttle 98 is of a size substantially larger than those employed in the patents above referred to, so that a much greater than usual quantity of locking thread may be contained within a locking thread supply case
  • the shuttle is arranged to be rotated less than a complete revolution during each sewing cycle through a speed reducing gear train, described more fully hereinafter, with a driving ratio proportional to the number of beaks on the shuttle less one, to the Whole number of beaks. By so doing each beak is brought to a position for reception of a loop of thread from the needle successively. Thread for the loop'being extended by the shuttle during formation of each stitch also will draw from the loop of thread previously formed and being carried down from the top of the shuttle where it already has passed a position of maximum extension.
  • Figs. 12 to 15 The operation of the shuttle in drawing thread from a previous needle loop into a stitch which is in the process of being formed with its loop being extended is' illustrated in Figs. 12 to 15, inclusive.
  • a needle loop f 04 of a stitch in the process of being formed is extended sufficiently to engage a beak of the shuttle in Fig. 12.
  • the preceding loop of the previously formed stitch is indicated at
  • 04 in process is being enlarged (Fig.
  • each needle loop while forming and setting a stitch, take place with a minimum of movements in the thread through the horn particularly while each needle loop is being passed over the thread supply case by the.y shuttle.
  • the time of engagement of the thread over guide members in the horn and through the work engaging the end of the horn. is substantially reduced and is lessy than in ma.- chines of the patents noted above in which a take-up is employed to draw each needle loop. ⁇ from the shuttle.
  • the principal thread movement in the present machine occurs only in the loops of thread engaging the shuttle so that no take-up action is required to control the thread for the shuttle.
  • each new loop of thread To enable each new loop of thread to be drawn through the work by the needle, the forward side' of each loop, as it is drawn through the work by the needle, is furnished Vfrom the contracting previously formed looped of thread and the other side of the new loop is furnished from the supply payed out through the horn so that no slid-I ing movement occurs at any time in the needle hook.
  • the amount of thread payed out through the horn in the illustrated machine issumcient only to furnish thread for the supply side only of each needle loop before the needle reaches the connected to a link
  • 6" has a roll engaginga cam on a shaft H8, corresponding tov the shaft 31 of Patent No. 2,331,118.
  • the vshaft 31 of Patent No. 2,331,118 is identified in that patent as a take-up actuating shaft and is arranged to actuate a take-up for giving up and taking up thread in full amount for the passage of each needle loop about the shuttle.
  • the mechanism 'actuated by the shaftv of the patent moves its take-up arm through a relatively large stroke.
  • the present thread controller is distinguishable from the take-up ⁇ in the said prior patent by the relatively short full stroke of the present controller which isl suflicient only to furnish less than half the thread needed from the time the needle is threaded until it reaches theV top of its stroke at the end of its movement away from the work. There-A after, the thread yielding movement of the controller is terminated. ⁇
  • the illustrated thread controller is actuated to retract thread as soon as a shuttle beak engages a spread loop and the needle is disengaged therefrom.
  • the thread retracting movement of the thread controller takes place during the time each loop of thread moves from its position of engagement with the shuttle (Fig. 12) to a position of maximum extension (Fig. l) about the shuttle and thread case.
  • the retracting movement of the illustrated thread controller is relatively short as compared with a full scale taking up action required by the takeup arm of the patented machine, all the thread required by the enlarging loop engaged by the shuttle in the present machine being drawn from the preceding loop
  • the machine To open each loop of needle thread for the shuttle the machine is provided with a loop spreader (see Figs. 2 and 12).
  • 20 is in the form of an angular arm projecting downwardly and forwardly from a diametrically arranged socket
  • the forward end of the spreader is forked and arranged to engage the side of the loop carried by the needle which extends to the preceding loop of thread on the shuttle. Accordingly, when the spreader engages the thread its draws thread from the preceding loop and not from the needle. Thus, it is unnecessary to provide thread from the horn to supply the needle loop while being spread.
  • 20 is mounted at an angle to the line of feed with its right end directed rearwardly of the machine and is rotatable in a bearing in the machine frame. At the right end of the spreader shaft is clamped an arm
  • the shuttle is accelerated as each beak receives a loop of thread and is decelerated after the loop carried thereby reaches a position of maximum extension.
  • the lshuttle is driven through a variable speed device in addition to its speed reducing gear train.
  • 02 has three-quarters the number of teeth on the shuttle and is secured to a driver shaft
  • 32 is rotatably mounted in bearings in the machine frame.
  • 36 meshes with a driving spur gear
  • 42 has its rearward end clamped in a block
  • 44 is actuated through a driving crank
  • 46 is secured to a constant speed shaft
  • the arrangement is lsuch that the driver gear
  • 03 is of hollow cylindrical construction and has a grooved circular side wall and a rear end wall
  • 54 in the circular side wall forms a raceway for an internal rib on an annular split plate
  • 58 of the thread case side wall is mounted an adjustable thread tension through which the thread passes on its way from a supply bobbin
  • 60 is grooved within the inner surface o its hub and is engaged by a pair of radially arranged spring-pressed plungers
  • the thread case has a radial flange
  • the locking thread tension device is located in the groove
  • the tension spring is retained in the groove
  • the shield is retained in adjusted position along the groove
  • the solid end of the shield adjacent the tension spring overlies the spring and isV movable along the spring in its retaining channel to press the spring more firmly against the thread running from the bobbin
  • the thread engages a removable wear block
  • 16 isl formed with an offset lug projecting radially from the circular side wall ofthe thread case to pro-'f
  • the wear block has a tongue
  • the thread In applying the thread to the thread case the thread is inserted endwise through the passage
  • 80 is located in the lug of the wear block
  • the block has a dovetail section ntting correspondingly shaped surfaces in the thread case side wall to resist outward thrust.
  • the' thread case side wall is notched at
  • Alternately engaging the notch and perforation are the hooked end of retainer members in the form of a linger
  • the mechanisms for actuating the retainer members comprise the levers 92 and
  • 93 is shownvin Figs. 1, 2 and 3 and comprises a cupeshaped inem-ber provided with three lugs through which pass clamping screws 208 entering into threaded relation with the frame of the machine.
  • 02 is formed with .an annular slot 2 it (see Fig. 4l
  • 2 (Fig. 3).
  • 2 is perforated and is clamped in place by one of the screws 203 which passes through the perforation between the cover and the frame.
  • Theplate has its leading end beveled. at 2
  • the rear wall ofthe thread Acase has an opening 2
  • the ejector is fulerumed on a slotted stud 2
  • the slotted end of the stud is surrounded by the coils of a spring 220, one end of the spring being bent inwardly into the slot of the stud and the other end projecting outwardly to engage a pin on the forked portion of the machine frame.
  • the spring 220 acts normally to hold the ejector away from the f thread case so that each. loop of needle thread may clear the ejector.
  • 66 on the thread case has a fiat outer surface and projects radiallyy downwardly beyond the outer edge of the shuttle from the thread case. Beyond the flat surface of the flange it is beveled to enable each needle loop as it is carried about the thread case to move smoothly inwardly of the machine toward the work.
  • 55 is concave and nts closely with the outer forward convex surface of the shuttle with no substantial clearance between the parts.
  • the lower left edge of the ilange is formed with a gradual helix, the inclination of the ilange edge to a radius of the'thread case being greaterV than the inclination of the slots forming the shuttle beaks.
  • the shuttle rotates within a twospart raceway plate 222 (see Fig. 3) ⁇ fitting between' the annular plate
  • the raceway plate 222 extends from a positionjust beyond the point of entry for each needle loop into a slot behind a shuttle beak to a position at therother end of a cuteaway section of the plate through which the needle loops are discharged.
  • each contracting needle loop Hlrand To reduce the slack thread in each contracting needle loop Hlrand to maintain control of the contracting loop of. needle thread so that it will not be carried about the thread case by the shut'- tle a second time, the thread case retaining pin is retained in engagement with the perforation in the flange
  • the lowerend of the plate 226 overlies the slot
  • the plate 226 also is formed with an opening to admit the retainer pin
  • the tension and pull on the thread applied by the shuttle is in a direction to lift the work slightly from the tip of the horn 6.
  • the pull on the thread is exerted on the Work both by the retracting stroke of the needle and by the shuttle after the work has been fed at least a stitch length from the point at which the work is clamped by the presser foot I4 so that the portion of thread
  • the only other portion of thread engagingv the horn is that running from the needle receiving opening to the stitch being formed. Due to the upward pull of the thread. this portion of thread also is freed from clamping engagement between the work and the horn, the work lifting sufliciently from the horn tc free the thread.
  • a thread measuring device acting in accordance with the thickness of the work is provided and actuated to release its measured supply of thread to the thread controller after each needle loop has been engaged by the-shuttle or loop taker.
  • the thread measuring device acts on the thread between the thread controller l0 and a wax pot 232 (see Fig. l) while the needle is being looped and comprises a pair of thread locks 234 and 236 between which the thread is engaged by a pull-off arm 238 (see also Fig. 24).
  • the pull-off arm 238 is actuated by mechanism under the control of the presser foot while engaging the work, which mechanism is similar to the mechanism for actuating the pull-01T lever 417 of Patent No. 2,331,- 118.
  • the thread locks 234 and 236 are also actuated by mechanism similar to that employed by the thread locks 455 and 457 of that patent.
  • both thread locks are closed while each loop of needle thread is being drawn through the work by the needle.
  • the front look 234 is opened to release the measured thread, the thread pull-off arm 238 having already moved to provide slack thread between the thread locks.
  • the thread controller retracts from the thread measuring device only a part of the thread required by one side of the needle loop as it is dra-wn through the work by the needle. The remainder of the thread retracted by the controller is furnished from the preceding needle loop Ibeing drawn over the shuttle beak as the beak enlarges each needle loop. Thus, the thread controller retracts thread from needle loops of two successive stitches.
  • the length of thread left remaining will be sufficient to enable a new loop in a seam to be drawn through the work by the needle and engaged with the shuttle, after which an additional length is provided by the thread measuring device corresponding in amount with the thickness of the new work piece introduced into the machine so that the end of the thread will be drawn into close proximity to the undersurface of the work as illustrated at 239 in Fig. 15.
  • thread may be drawn past the thread locks by releasing them manually.
  • the mechanism for actuating them is connected to a spring tensioned lever 240 fulcrumed on a stud 242on the base of the machine and provided with a handle portion at its forward end in a conveniently accessible location.
  • the lever 245i has an upwardly extending arm through which passes a threaded rod 2M having check nuts 24d disposed at opposite sides thereof and having a pivotal connection 248 with one arm of a bell crank 259 forming a part of the thread lock actuating mechanism.
  • the lever 25d corresponds with a bell crank lever 483 of the Gouldbourn et al. patent and when rotated in one direction, opens both thread locks and when rotated in the other direction, closes them for operation in the usual way.
  • Fig. 25 The operation of the stitch forming and work manipulating devices is most clearly indicated in Fig. 25.
  • the work piercing and entering movements of the awl and needle are shown in the order noted by the :first two curves of this figure with relation to a shaded band 252 indicating the maximum thickness of work intended to be operated upon by the machine.
  • the needle remains in the Work during the feeding movement and this feeding movement, illustrated in the third curve, may be adjusted between the maximum and minimum shown in solid and dotted lin-es respectively, the idle shift movement of the needle being the difference between the maximum and minimum feeding movements.
  • the presser foot lift and lock curves show a uniform work releasing movement of the presser foot from the work, the foot being unlocked at the end of its lifting movement, as shown in the fifth curve from the top of the figure, momentarily to enable the presser foot to vaccommodate itself to the thickness of the work.
  • the significance of the remaining curves of Fig. 25 will be readily understood without extended explanation with the exception of that labeled Shuttle.
  • the shuttle curve is made up in part of a dotted line and a solid line crossing each other in the neighborhood of 240.
  • the solid line represents the movements of one shuttle beak engaging a loop of needle thread and the dotted line forms a continuation of the solid line into the next succeeding cycle to illustrate the movements of the loop toward a position of maximum extension at 25 and then to illustrate the contracting movement of the loop.
  • Each contracting loop remains on the shuttle beak until a new loop is engaged by another shuttle beak at approximately 220, at which time two successive needle loops engage the shuttle simultaneously, each new loop drawing thread from the preceding loop.
  • a loop reaches a position of maximum extension on the shuttle the preceding loop is set in the material of the work.
  • a shoe sewing machine having a work feeding hook needle, a rotary shoe entering horn and needle threading devices in the horn, in combination with mechanisms for actuating the needle including means to cause its threaded hook to be Withdrawn from the horn into the substance of a shoe on the horn and means acting thereafter to cause the needle to be shifted with a work feeding movement the length of a stitch while engaging the shoe to feed the shoe.
  • a shoe sewing machine having a work feeding hook needle, a rotary shoe entering horn and needle threading devices in the horn, in
  • combination with mechanisms including means for actuating the needle to cause its threaded hook to be withdrawn from the horn into the substance of a shoe on the horn and means actthereafter to cause the needle to be shifted the length of a stitch while still engaging the shoe to feed the shoe, and a needle engaging member acting close to the point of engagement of vthe needle with the shoe to reinforce the needle while being shifted to feed the shoe.
  • a sewing machine having a work feeding hook needle, needle threading and other stitch forming devices, in combination with mechanisms including means for actuating the needle to cause its threaded hook to be withdrawn from the threading device and means acting thereafter to cause the needle to be shifted the length of a stitch while still engaging the work.
  • a shoe sewing machine having a work feeding hook needle, a rotary shoe entering horn and needle threading devices in the horn, in combination with a carrier for the needle mounted foi' movement toward and from the work and in the direction of work feed, mechanisms including means for actuating the carrier to cause the threaded hook of the needle to be withdrawn from the threading device and to dwell while still engaging the work and means acting thereafter to cause the carrier to be shifted the length of a stitch while the needle is dwelling in the work, and a yielding needle engaging member on the needle carrier acting close to the point of engagement of the needle with the work while the carrier is being shifted in the direction of work feed to reinforce the needle.
  • a sewing machine ⁇ having a curved work feeding hook needle, needle threading and other stitch -forming devices, and a needle carrier arm, in combination with mechanisms for actuating the carrier'arm to cause the threaded hook of the needle to be withdrawn from the threading device and thereafter to be shifted the length of a stitch while engaging the work to feed the work, and a needle engaging member pivoted to the carrier arm for movement along the needle to reinforce the needle during work feed.
  • a shoe sole sewing machine having an awl mounted for movement toward and from the work to pierce the work, and other stitch forming devices, in combination with a work feeding needle at the same side of the work with the awl, means for actuating the needle to enter each perforation formed in the work by the awl and means for actuating the needle with an idle lateral movement along the line of feed after it disengages the work to enable entry of the awl into the work a stitch length from the previously formed perforation.
  • a shoe sole sewing machine having an awl mounted for movement toward and from the work to pierce the work, and other stitch forming devices, in combination with a work feeding needle spaced at a distance from the awl along the line of feed at least the length of a stitch, means for actuating the needle to enter the perforation formed in the work by the awl and means for actuating the needle with an idle lateral movement in the direction of work feed after it disengages the work to enable entry of the awl into the work a stitch length from the previously formed perforation.
  • a shoe sole sewing machine having an awl mounted for movement toward and from the work to pierce the work, and other stitch forming devices, in combination with a work feeding needle mounted for movement with a fixed spacing along the line of feed between the awl and the needle at least the length of a stitch and mechanism for actuating the needle with an idle lateral movement in the line of feed after being disengaged from the work to enable the awl to be moved to a point within a stitch length of the previously formed perforation.
  • a shoe sole sewing machine having an awl mounted for movement toward and from the work to pierce the work, and other stitch forming devices, in combination with a work feeding needle mounted for movement with a fixed spacing along the line of feed between the awl and the needle, and mechanism for actuating the needle with an idle lateral movement along the line of feed after being disengaged from the work to enable the awl to be moved a stitch length from the previously formed perforation.
  • a 'shoe sole sewing machine having an awl mounted for movement toward and from the work topierce the work, and other stitch forming devices, in combination with a work feeding needle mounted for movement with a xed spacing along the line of feed between the awl and the needle, mechanism for actuating the needle with an idle lateral movement along the line of feed afterV being disengaged from the work to enable the awl to be moved a stitch length from the previously formed perforation, and adjustable mechanism for -actuating the needle along the line of feed while in engagement with the work.
  • A'shoe sole sewing machine having an awl mounted "for movement toward and from the work to pierce the work, and other stitch forming devices, in combination with a work feeding needle mounted for movement with a fired spac- 'along the line of feed between the awl and the needle, mechanism for actuating the needle withan idle lateral movement along the line of feed after'being disengaged from the work to enable the awl to be moved a stitch length from the previously formed perforation, adjustable meehanismfor actuating the needle along the line of Vfeed while in engagement with the work, said mechanisms comprising a pair of levers and cams, a pair of links connected to the respective levers and a central needle actuating pivot connecting the links.
  • a shoe sole sewing machine having an awl mounted for movement toward and from the work to pierce the work, and other stitch forming devices, in combination with a work feeding needle mounted for movement with a xed spacing along the line of feed between the awl and the needle, mechanism for actuating the needle with an idle lateral movement along the line of feed after being disengaged from the work to enable the awl to be moved a stitch length from the previously formed perforation, adjustable mechanism for actuating the needle along the line of feed while in engagement with the work, said mechanisms comprising a pair of levers and cams, a pair of links connecting the respective levers, a central pivot connecting the links, and a single link operatively connecting the central pivot to the needle.
  • a shoe sole sewing machine having an awl mounted for movement toward and from the work to pierce the work, and other stitch forming devices, in combination with a work feeding needle mounted for movement with a fixed spacing along the line oi feed between the awl and theneedle, mechanism for actuating the needle with'an idle lateral movement along the line of feed after being disengaged from the work to enable the awl to be moved a stitch length from the previously formed perforation, adjustable mechanism for actuating the needle along the line of feed while in engagement with the work, said mechanisms comprising a pair of levers and cams', and a pair of links connected to the respective levers, a central needle actuating pivot con.- necting the links, the link of the adjustable mech- ⁇ anisrn being connected to its lever by an arcuate slot Yand clamping stud and the arcuate vslot being formed vconcentrically with the central pivot .while the needle is in its fully fed position.
  • a shoe sewing machine having a curved work piercing awl and a curved work penetrating needle at the same side of the work, the needle acting to enter a perforation formed by the awl, carrier arms for the needle and awl mounted te oscillate about the saine anis toward and from thev Work and to move in the line of feed while being retained with a uniform spacing between each other, and 'means for retaining the needle and awl carriers in engagement with each other.
  • a shoe sewing machine having a curved work piercing awl and a'curved work penetrating needle at the same side of the work, the needlev acting to enter a perforation formed by the awl, carrier arms for the needle and awl mounted t'o oscillate about the same axis toward and from the work and to move in the line of lfeed while being retained with a uniform spacing between each other, means for retaining the needle and awl carriers in engagement with each other comprising a spindle passing through the needle and awl carrier arms, and clamping means on the' Yspindle for the carrier arms.
  • a shoe sewing machine having a curved work piercing awl and a curved work penetrat- 1 ing needle at the'same side of the work, the
  • ⁇ A sho'e"sevving machine having a curved work piercing awl and a curved work penetrating needle "at the same side of the work, ⁇ the needler acting to enter a perforation formed by the awl, carrier arms 'for the needle and awl mounted te 'oscillate about the same axis toward and frornthe Awork and to move in the line oi feed A-while being retained with a uniform spacing 'between each other, means for retaining the needle and awl carriers in positions come prising a spindle passing through the needle and awl carriers, sleeves surrounding the spindle within the Aneedle and awl carriers, one of said sleeves being internally threaded to engage threads on-the spindle, and means for clamping the 4sleeves 'to the spindle.
  • a shoe sewing'machine having -a curved work piercing awl and a curved work penetrat. ing needleV at the same Aside of the work, the needle acting to .enter a perforation formed vby the awl, carrier arms for vthe needle and awl mounted to oscillate about the same axis toward andfrom the work -andto .move in the line of feed while being retained :with a uniform spac- 'ing .between each other, means for retaining the needle and awl carriers in positions comprising i, 2i Y Y a spindle passing through the needle and Vawl carriers, sleeves surrounding the spindle Vwithin the needle and awl carriers, one of said sleeves being internally threaded to engage threads on the spindle, and a member between the carriers for rotating the threaded sleeve onjthe spindle.
  • a shoe sewing machine having a, curved work piercing awl and a curved work penetrating needle at the same side of the work, the needle acting to enter a perforation formedjby the awl, carrier arms for the needle and awl mounted to oscillate about the same axis toward and from the work and to move in the line of feed while being retained with a uniform spacing between each other, means for retaining the needle and awl carriers in positions comprising a spindle passing through the needle and awl carriers, sleeves surrounding the spindle within the needle and awl carriers, one of said sleeves being internally threaded to engage threads on the spindle, a member between the carriers for rotating the threaded sleeve on the spindle, and a check nut on one end of the spindle for clamping the other sleeve and rotating member to the threaded sleeve.
  • a shoe sewing machine having a work feeding hook needle, a rotary shoe supportingy horn having a needle receiving opening at its-end, a presser foot cooperating with the work supporting horn to clamp a shoe opposite the shoeengaging surface of the horn at a position in advance of the needle, and needle threading devices at the end of the horn in alinement with the opening, in combination with mechanism for actuating theneedle to cause its threaded hook to be withdrawn from the opening in the horn while in alinement therewith into the sub stance of the shoe to clear the horn, and means for causing the needle thereafter to be shifted laterally the length of a stitch from alinement with the opening in the horn while engaging the shoe.
  • a shoe sewing machine having a work .feeding hook needle, a rotary work supporting horn, a presser foot cooperating with the work supporting horn to clamp the work opposite the Work engaging surfaceof the horn and needle threading devices in the horn, in combination with mechanism for actuating the needle to cause its threaded hook to be withdrawn from the horn into the substance of Athe shoe and thereafter to be shifted from thel presser foot the length of a stitch while engaging theshoe, and a needle engaging member acting against the presser foot close to the pointof engagement of the needle with a shoe to reinforce the needle while being shifted to feed theshoe.
  • a shoe sewing machine having stitch forming devices including a hook needle, 'and a thread controller acting during its full stroke to furnish less than half the thread needed from the time the needle is threaded until it reaches theend of its movement away from a shoe, awork support and a presser ioot, in combination with a multiple beak loop taker at the sideof the work with the needle arranged to receive ya 'loolp' of thread from the needle with one beak while an'- other beak retains the previously formed loop of thread.
  • a shoe sewing machine having stitch forming devices including a hook needle, 'a work .s upport and a presser foot, in combination with a 22 thread from the needle with one beak while another beak retains the previously formed loop of thread, a gear train for driving the loop taker less than a complete rotation during each sewing cycle to cause each beak on the loop taker to be brought into position for reception of a loop of thread from the needle in regular sequence, vand' a variable speed device for driving the gear train to accelerate the loop taker as multiple beak loop taker.
  • the side of the work with v'the needle arranged 'to' reive'a loop of each beak receives a loop of thread and to decelerate the loop taker after the loop of thread carried thereby reaches a position of maximum extension.
  • a shoe sewing machine having stitchA forming devices including a hook needle, and a thread controller acting during its full stroke to furnish less than half the thread needed from the time the needle is threaded until it reaches the end of its movement away from a shoe, a rotary work supporting horn at the opposite side of the work from the needle, said horn having a needle receiving opening at its end, a needle threading 'device at the end of the horn in alinement with the needle opening, and a presser foot at the side of the work with the needle for clamping the work against the horn, in combination with a multiple beak loop taker at the side of the work with the needle arranged to receive a loop of thread from the needle with one beak while another beak retains control of the previously formed loop of thread.
  • a shoe sewing machine having stitch forming devices including a hook needle, a rotary Work supporting horn at the opposite side of the work from the needle, a needle threading device in the horn, and a presser foot at the side of the work with the needle for clamping the work lagainst the horn, in combination with a multiple beak loop taker at the side of thework with the needle arranged to receive a loop of thread from the needle with one beak while another beak retains control of the previously formed loop of thread, and means for driving the loop taker at a variable speed with respect to the operation of the other stitch forming devices.
  • a shoe sewing machine having stitch forming devices including a hook needle, a rotary work supporting horn at the opposite side of the work from the needle, a needle threading device in the horn., and a presser foot at the side of the work with the needle for clamping the work against the horn, in combination with a multiple beak loop taker at the side of the work with the needle arranged to receive a loop of thread from the needle with one beak while another beak retains control of the previously formed loop of thread, 'means for driving the loop taker comp-rising connections acting at a ratio other than one to one, and a variable speed device for driving said connections to cause each beak on the loop taker to be brought into position for reception of a loop of thread from the needle in regular sequence and to be accelerated and decelerated with respect to the point at which the loop is received in a uniform manner.
  • a shoe sewing machine having stitch forming devices including a hook needle, a rotary Work 'dle with one beak while another beak retains con-

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US79484A 1949-03-03 1949-03-03 Shoe sewing machine Expired - Lifetime US2670701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US79484A US2670701A (en) 1949-03-03 1949-03-03 Shoe sewing machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US79484A US2670701A (en) 1949-03-03 1949-03-03 Shoe sewing machine
GB25037/53A GB746389A (en) 1953-09-10 1953-09-10 Improvements in or relating to sewing machines

Publications (1)

Publication Number Publication Date
US2670701A true US2670701A (en) 1954-03-02

Family

ID=10221199

Family Applications (1)

Application Number Title Priority Date Filing Date
US79484A Expired - Lifetime US2670701A (en) 1949-03-03 1949-03-03 Shoe sewing machine

Country Status (4)

Country Link
US (1) US2670701A (de)
DE (1) DE1011703B (de)
FR (1) FR1096762A (de)
GB (1) GB746389A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928361A (en) * 1955-10-28 1960-03-15 United Shoe Machinery Corp Shoe sewing machines
US2972316A (en) * 1955-10-28 1961-02-21 United Shoe Machinery Corp Shoe sewing machines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4038228B1 (de) 2019-10-04 2023-09-20 NIKE Innovate C.V. Gegenstand mit fasermuster und verfahren zur herstellung des gegenstandes unter verwendung einer stickmaschine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US669327A (en) * 1898-05-12 1901-03-05 Evarts Tracy J Looper for sewing-machines.
US677886A (en) * 1898-04-15 1901-07-09 Evarts Tracy J Looper for sewing-machines.
US2148197A (en) * 1936-04-29 1939-02-21 United Shoe Machinery Corp Sewing machine
US2188093A (en) * 1933-11-28 1940-01-23 United Shoe Machinery Corp Sewing machine
US2331118A (en) * 1938-06-28 1943-10-05 United Shoe Machinery Corp Shoe sewing machine
US2355724A (en) * 1939-09-14 1944-08-15 United Shoe Machinery Corp Shoe sewing machine
US2525858A (en) * 1946-03-30 1950-10-17 United Shoe Machinery Corp Shoe sewing machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US677886A (en) * 1898-04-15 1901-07-09 Evarts Tracy J Looper for sewing-machines.
US669327A (en) * 1898-05-12 1901-03-05 Evarts Tracy J Looper for sewing-machines.
US2188093A (en) * 1933-11-28 1940-01-23 United Shoe Machinery Corp Sewing machine
US2148197A (en) * 1936-04-29 1939-02-21 United Shoe Machinery Corp Sewing machine
US2173299A (en) * 1936-04-29 1939-09-19 United Shoe Machinery Corp Shoe sewing machine
US2331118A (en) * 1938-06-28 1943-10-05 United Shoe Machinery Corp Shoe sewing machine
US2355724A (en) * 1939-09-14 1944-08-15 United Shoe Machinery Corp Shoe sewing machine
US2525858A (en) * 1946-03-30 1950-10-17 United Shoe Machinery Corp Shoe sewing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928361A (en) * 1955-10-28 1960-03-15 United Shoe Machinery Corp Shoe sewing machines
US2972316A (en) * 1955-10-28 1961-02-21 United Shoe Machinery Corp Shoe sewing machines

Also Published As

Publication number Publication date
DE1011703B (de) 1957-07-04
FR1096762A (fr) 1955-06-24
GB746389A (en) 1956-03-14

Similar Documents

Publication Publication Date Title
US2670701A (en) Shoe sewing machine
US3308776A (en) Sewing machines having bobbin thread replenishing means
US3063392A (en) Stitch-forming mechanism for lock stitch sewing machines
US2041945A (en) Shoe sewing machine
US2099574A (en) Slip stitch sewing machine
US1711483A (en) Thread-controlling mechanism for buttonhole-sewing machines
US2647478A (en) Shoe sewing machine
US2420643A (en) Sewing machine
US2275667A (en) Shoe stitcher
US1870844A (en) Sewing machine
US2707926A (en) Thread tensioning devices and mechanisms for actuating the same
US2160384A (en) Sewing machine
US3683832A (en) Thread control device for sewing machines
US2410859A (en) Shoe sewing machine
US2049369A (en) Lockstitch sewing machine
US1519652A (en) Lock-stitch sewing machine
US3051111A (en) Thread severing means for sewing machines
US1142391A (en) Lock-stitch shoe-sewing machine.
US1688056A (en) Shoe-sewing machine
US2253244A (en) Inseam shoe sewing machine
US3012529A (en) Lock stitch sewing machines
US2657653A (en) Sewing machine
US2888892A (en) Sewing machines
US1814550A (en) Sewing machine
US2502629A (en) Machine for making stitchdown shoes