US2430515A - Machine for inserting fastenings - Google Patents

Machine for inserting fastenings Download PDF

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US2430515A
US2430515A US574086A US57408645A US2430515A US 2430515 A US2430515 A US 2430515A US 574086 A US574086 A US 574086A US 57408645 A US57408645 A US 57408645A US 2430515 A US2430515 A US 2430515A
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fastening
driver
work
wire
machine
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US574086A
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Robert H Lawson
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United Shoe Machinery Corp
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United Shoe Machinery Corp
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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D69/00—Shoe-nailing machines
    • A43D69/04—Shoe-nailing machines with apparatus for separating the nails from a wire or from a strip of metal or other material

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  • This invention relates to an improved machine for inserting fastenings into Work pieces, such asy shoe parts, and is herein illustrated as applied to the fastening of shoe uppers to sole members after the upper of each shoe has been worked into lasted relation to the sole member.
  • the invention accordingly provides a novel and improved machine for inserting fastenings according to which each fastening is inserted by means of another fastening of the same type, the rst mentioned fastening being bent While it is being inserted by the other fastening and this insertion being continued until the trailing end portion of the fastening which is being inserted is embedded or countersunk in the surface of the work.
  • This has the particular advantage of insuring that in each instance the inserted fastening is fully driven home and iS accomplished by causing the other fastening to be the immediate and direct driving element in contact with the fastening being inserted rather than relying on the driver to be the direct driving element.
  • the driver often can not be moved down sufficiently to countersink the driven fastening, and this is due to the fact that the driver is apt to interfere With the deflector which is mounted adjacent to the point of entry of the fastening into the Work.
  • the illustrated fastening forming and inserting machine has a supply of a continuous strand of fastening material such as staple Wire Which is intermittently fed by suitable feeding mechanism.
  • the leading end portions of the Wire are successively received by Wire severing mechanism Where they are severed from the strand of Wire to form single-legged fastenings and whence they are transferred to a position to be engaged by a driver.
  • the illustrated machine is provided with a deflector adapted to engage successive portions of each fastening during its insertion thereby bending said portions and causing the fastening to follow a curved path through the Work Without penetrating the entire thickness thereof.
  • the invention provides a novel machine for inserting fastenings not limited in utility to the fastening of ⁇ uppers nor to shoe manufacture.
  • Such utility is especially evident Where conditions are such that it is inconvenient, impracticable or undesirable to anchor the fastening by clinching it against the rear surface of the Work as, for example, Where the rear surface of the Work is not conveniently accessible, where the work is thicker than the length of the fastening, or Where it is undesirable to have the fastening penetrate, as it might, entirely through the Work.
  • Fig. 1 is a View in front elevation of the head of a fastening-inserting machine in which the invention is embodied;
  • Fig. 2 is a, View in right-hand side elevation of 5 the machine head, with certain parts broken away;
  • Fig. 3 is a plan View of the machine head, with certain parts broken away;
  • Fig. 4 is a detail View in front elevation of the 10 fastening-forming and -inserting mechanism of the machine illustrated in Fig. 1;
  • Fig. 5 is a sectional. Niew, thesectionbeing taken along the line V--V of Fig. 4; ⁇
  • Fig. 6 is a plan View of a portion of a lasted l5V shoe bottom after the insertion therein of fastenlings which secure the marginaliportionlof. the upper in lasted position upon the shoe bottom;
  • Fig. l is a view in side elevation lofi alportion: of the forepart of a lasted shoe; partly 'infsectiong 2'() and illustrating the insertion of a fastening there-#- in prior to the clinching of oneend-v portioncf the fastening;
  • Fig. 8 is a view similar to Fig. '7 after thei clinching of the fastening. 25
  • ⁇ the-inventionis ⁇ ,concerned with the iinsertion of fasteningsf intolworkf parts primarily for theipurposev of securing together' such: work-partsxinf juxtaposition.
  • the fastening which, as stated, is a straightl piece of wire before its insertion, is inserted endwise and is caused to follow a curved path through the work, the insertion of the fastening being continued until its trailing end portion is 4embedded inthe surface of the work and its leading end portion has emerged from the side of entry of the work and protrudes therefrom. Thereafter this leading end portion is clinched, that' is to say, bent-and caused to reenter the surface of the work.
  • the illustratedfastening-inserting machine is adapted-fte insert-fastenings of the above-mentionecrtype'in ⁇ th'emanner just described.
  • Vutility-of the machineA is not limited to any particular fastening-inserting operation on any particula'i-ltypeof work.
  • the machine is shown as adapted for use in securing the vtensioned marginal portion/of the shoe.
  • The""fastenings which-fare ⁇ successively inserted' into rsuccessive portion'slofI the manually presented and fed work are formedin the machine from a continuous strand of fastening material,v such as wire, which is usually wound up on a reel (notshown) and is fed into themachine by mechanism to be de-
  • The" illustrated machine comprises a box- Y shap'edframe. or headl i0 (FigsJ-l, 2 ⁇ and 3)V which hou'sesfor ⁇ supports the operating instrumentalitiesr of the machine and their actuatingvmechanismsl-
  • the head i9 issecured to a suitable support, such as a column I2.
  • the principalmechanisms of the illustrated l machine are a wire-feeding mechanism, a wiresevering and fastening-transferring mechanism,
  • a fastening-driving mechanism a. fastening-de-- f fleeting mechanism and a fasteninglinchin'g tor (fnotshown).
  • z Driving connectiont between f the pulleyl I6 and the shaft lll isY established -or interrupted'by a pin clutch 2li, o'f conventional type-which is controlled by a treadle rod-22 cohnectedto a treadle (not shown) and provided with a spring 2d tending to elevate the treadle rod-22 and to disengage the clutch.
  • vDownward movement of the-rod 22 by the treadle serves to.
  • the cam shaft I4 carries a series of cams for actuating the operating elements of the above-mentioned mechanisms in a predetermined sequence.
  • the above-mentioned wire-feeding mechanism serves to advance a strand of wire in the machine and to feed the leading end portion of the wire strand intermittently into the wire-severing mechanism where a fastening is formed.
  • the wire is preferably wound up on a reel (not shown) which conveniently is supported on top of the head I8.
  • the illustrated wire-feeding mechanism is similar in construction and operation to the wire-feeding mechanism disclosed in United States Letters Patent No. 2,334,715, granted on November 23, 1943, on an application filed in my name.
  • the support for this mechanism is a bracket 26 (Figs. 1 and 3) which is bolted to a plate-like bracket er support 28 of somewhat triangular shape.
  • the support 28 is bolted at opposite sides to the machine frame and serves to carry various of the above-mentioned mechanisms, as will be described.
  • the wirefeeding mechanism comprises a wire feed roll 3l) which is intermittently rotated in one direction to advance the wire in a downward direction and which to this end cooperates with a pressure roll 82 provided with a groove in its periphery in which the wire is received, the wire passing between the two rolls 30 and 32.
  • the roll 32 is spring pressed toward the roll 3B and is rotatable in a pivotally mounted bearing piece.
  • a pivotally mounted and manually operated throw-out lever @It having a cam portion at its hub to move the roll 32 out of contact with the roll 38 so as te interrupt the feeding of the wire.
  • the throw-out lever 3@ is so positioned that it permits the spring pressed roll 32 to contact the roll 38 thus to enable the latter to advance the wire step by step.
  • the roll 38 is mounted to rotate freely about the axis of a stub shaft secured in the bracket 26 and has integral with one face of it a ratchet wheel 3B which is adapted to be rotated intermittently by a spring-biased pawl 38 pivoted on an arm 40 secured on the said stub-shaft carrying the roll 38.
  • the arm i0 is rocked by pivotal engagementwith a link 42 extending upwardly therefrom and pivotally connected at its upper end to a cam iever 84 rotatably mounted on a shaft d6 secured in suitable bearings in the machine frame.
  • the cam lever 44 is in the form of a bell crank lever and has a rearwardly and downwardly extending arm 88 (Fig. 2) which carries a cam roll 58 held by a spring 52 against the periphery of a cam disk -58 secured on the cam shaft I8.
  • the spring 52 is tensioned between the arm e8 and a transverse bar 55 secured in the machine frame.
  • the cam disk 54 is so shaped that the cam lever eli is swung downward at a predetermined point in each cycle of operation with the result that the pawl 38, which is held by its spring in engagement with a tooth in the ratchet wheel 38, causes the latter aswell as the feed roll 38! to be rotated a predetermined distance.
  • the wire which passes from the reel through lil) 6 suitable wire guides between the rolls 38 and 32 is fed into and through a tube 58 which is clamped to the brackets 26 and 28 and is in alinement with a grooved wire guiding member 88 of rectangular cross-section closely fitting into a channel provided in the front face of the bracket 28 and covered partly by a-bracket 82 and partly by a plate 64, both being detachably secured to the bracket 28.
  • the groove in the guiding member 60 extends longitudinally thereof and is in alinement with the wire passage of the tube 58 so that the wire is fed into and through the guiding member El! the groove of which, since it is covered by the bracket 62 and the plate 6ft, represents a wire guiding passage or guideway enclosed on all sides but, nevertheless, readily accessible.
  • the wiresevering and fastening-transferring mechanism comprises a roll F8 (Figs. 1 and 4) which is seated in a circular recess 'dl provided in the front face of the bracket 28 and is covered by the plate 64.
  • the roll li) is integral with a stem 12 which is rotatably mounted in a horizontal bore provided in the bracket 28 through which bore it extends rearwardly.
  • the front face of the roll 18 is provided with a diagonally extending groove I4 the open side of which is covered by the plate 64, and which is adapted to receive the wire when .fed by the above-described feeding mechanism.
  • the above-mentioned wire guiding member 68 is rounded at its bottom end in conformity with the curvature of the periphery of the roll i8 and terminates in close proximity to that periphery.
  • the roll 18 is rotated between two predetermined positions one of which may be called the Wire receiving position and the other the fastening inserting position.
  • the groove I4 of the roll In the Wire receiving position the groove I4 of the roll is in alinement with the groove of the Wire guiding member 58, and in the fastening inserting position the groove lli is in alinement with the path of movement of a driver, to be described, the axis of rotation of the roll 18 lying in the intersection of the line of wire feed and the path of movement of the driver.
  • the stem l2 To rotate the roll 18 back and forth between its two predetermined positions, the stem l2 has clamped to it an arm 'It extending laterally therefrom and pivotally connected to a long link 78 extending upwardly in the machine.
  • the uper end of the link 18 is pivotally connected to one of two parallel arms provided at one end of an l-l-shaped member 852 (Fig. 3) the other end of which is pivotally secured by a pin 82 to a bracket on the machine frame.
  • the pivotal conriection between the link 13 and the member 8E! is made by a screw 88 the stem of which is offset from or eccentric to the head and extends through the above-mentioned arm of the H-shaped member 88. It is secured in place by a nut 85.
  • the screw 84 may be rotated so as to adjust the position of the link 'i8 heightwise of the machine thus to adjust the predetermined positions of the roll 'i8 to be in exact alinement with the wire passage of the guiding member or with the path of travel of the driver.
  • the til-shaped member 88 is rocked about the axis of the pin 82 and to this end the other free arm of the member 88 is pivotally connected by a link 88 (Fig. l) to a canr.-lever00 pivotally securedv to the shaftg 05.
  • the cam lever-00 is in the ormof. a bell ⁇ crank leverandhasfa depending arm 02 (Fig.
  • 00 is so mounted that it is supported-at all of its sides and over its entire extentin anyposition of its reciprocatory-movement-The driver isyreciprocated in a guideway
  • 04 isv covered in part by the above-mentioned plate 04 and in part by a plate
  • 04 ⁇ is. rounded and located in the immediate vicinity of the periphery of the wire-.severing-roll 'l0 so that Ain the Afastening drivingposition of the ⁇ roll .10 the groove 'i0 provided. therein is in alinement with thev driver guideway
  • the severed fastening when being drivenv downwardly by the driver
  • 05 ⁇ is provided over the entire lengthof its rear face with a recess
  • 00 is attached is reciprocated and is in sliding contact with the front face of the bracket 20.
  • 08 is rabbeted at its lower end to form a, shouldered portion
  • the former is provided at its upper end with a n H0 (Fig. 5) which extends into a slot provided in one end of a pin l2 inserted through the portion
  • 00 is recipro cated along the guideway
  • 00 isof sufcient length to engage, when on its driving stroke, a fastening held by the roll 'l0 and to drive-it downwardly into the guidepiece l
  • 00 is not covered over its entire eX- s tent.
  • the guiding member l l0 Pivotally mounted on the projecting portion of the pin
  • the guiding member Vi 60 is retracted.
  • 00 has a fork-shaped upper end
  • 20 is secured on a shaft
  • 30 is secured to the shaft
  • each torsion spring engages the top l face .of a lug provided on the arm
  • 20 is moved upwardly in a counterclockwise direction, as viewed in Fig. 1, thereby loading the springs
  • Mechanism is provided for holding the springs
  • This mechanism comprises a latch arm
  • 02 (as viewed in Fig. 1) is connected by a spring E05 to the bracket
  • 00 which is rotated with the arm
  • 25 is constructed and arranged as follows:
  • 30 is fork-shaped and carries a block
  • 50 has extending through it, above and at right angles to the pin
  • 50 are in sliding engagement with the inner faces of the prongs of the link
  • 52 which moves the link
  • 28 is provided at its lower face with an abutment
  • 00 on its driving stroke, moves downwardly along the guideway
  • the stroke of the driver would of necessity be much longer but in no case can its stroke be so lengthened that the driver could countersink the trailing end portion of the fastening into the surface of the work in view of the unavoidable interference of the driver with ⁇ the baffle plate. If such an attempt were made,
  • the baille plate is adjustable with relation to the guiding piece or nozzle
  • the fastening F in being inserted into the work and following a curved path therethrough reemerges with its leading end portion from that surface of the work from which it was caused to enter the work. This protruding reemerged leading end portion of the fastening is then clinched by being turned back into the work.
  • the above-mentioned clinching mechanism which comprises a bar-shaped clinching member 200 (Figs. 1 and 4) having a laterally bent lower end provided with a concave clinching face terminating atlone edge in a projection 202.
  • the clinching member is mo'vableinspaced guideways 204 provided inthe bracket 28 and is l connected at its upper end-tolabarZ (Fig. 1) the upper end'of which is pivotally secured to an arm 208 secured tofashaft-"Z I--rot ⁇ atablein bearposition-with the groove 14 in alinement with the groove of the guiding member 60.
  • the latch 222 is pivotally connected tothe ⁇ lower end of a bar 224 the upper "end of which is pivoted to a actionof the loaded springs
  • Thecam f lever 226 is in the form of'a bell'crank lever and has a depending arm 228 (Fig. 2) carrying a roll 230 held by a spring:Y 232 against theperiphery of a cam disk 23d-secured onthecam shaft I4.
  • the cam disk 234f is so shapedthat at the proper chine the bar 224 is raised to permit the actuation of the clinching member200 bythe spring 2
  • a vertical rod-236 (Fig. l) extending through a hole in a lug 230 provided on the bracket 2
  • the rod'235 has threaded on its upper end a nut 240 carrying a washer and a lock nut 242.
  • the washer of the nut 240 is caused to-Strike the top faceof the lug 238, thus terminating the downward movement of the clinching memberV 200.
  • the combination withmeans' for" feeding a continuous 'strandof fastening material and means adapted ing the link 42 ldownwardly to' rotate the wire feed roll 30 a predetermined distance to advance they leading end portion of they wire strand through the guiding member 60 into the roll 10 which, at that time, assumes its wire receiving to receive the ⁇ le'ading'end portion of said strand and to sever from saids'trand' a' piece to form 'av single-'legged' fastening, of'a passageway for receivinga plurality offastenings, and means movable in said passageway and arranged by engagement with the 'uppermost fastening in said "passageway'to causethe' lowermost fastening to ber inserted into-the work.
  • a fastening-insertingmachine thel combination with means for feeding a continuous strand of fastening material, and means for severing pieces from said strand successively to form fastenings for insertion into a Work piece, of means for inserting each fastening into the Work piece by engagement with a succeeding fastening, and a deflector adapted to engage successive portions of each fastening during its insertion and to bend said portions thereby causing the fastening to follow a curved path through the Work Without penetrating the entire thickness thereof.
  • a fastening-inserting machine having, in combination, means for feeding a continuous strand of fastening material and means adapted to receive the leading end portion of said strand and to sever it so as to form a single-legged fastening, said severing means being arranged to transfer the fastening from its severing position into a driving position, a driver for inserting the fastening into a Work piece, a deflector adapted to bend successive portions of the fastening before they enter the Work piece, thereby causing the fastening to curve through the Work piece during the insertion thereof without penetrating the entire thickness of the work piece and causing the leading end portion of the fastening to emerge from the side of the Work piece from Where it was inserted, and means for clinching said leading end portion of the fastening.
  • a fastening-inserting machine having, in combination, means for feeding a continuous strand of fastening material and means adapted successively to receive the leading end portion of said strand and to sever it so as to form successively single-legged fastenings, said severing means being arranged successively to transfer each fastening from its severing position into a driving position, means for inserting each fastening into a work piece by engagement With a succeeding fastening, a deflector adapted to bend successive portions of each fastening before they enter the Work piece thereby causing the fastening to curve through thev Work piece during the insertion thereof without penetrating the entire thickness of the work piece and causing the leading end portion of the fastening to emerge from the side of the Work piece from Where it was inserted, and means for clinching said leading end portion of the fastening.
  • a fastening-inserting machine the combination with means for step-by-step feeding a continuous strand of stapling Wire, of wire receiving means adapted successively to sever the received end portions of the wire and to transfer the severed end portions as fastenings into a position from which they are inserted into a Work piece, a driver acting on a plurality of fastenings positioned in the line of drive thereby inserting the lowermost of said fastenings through the agency of the other fastenings and moving the succeeding fastening into position to be inserted during the succeeding fastening inserting operation of the driver.
  • the comfbination With means for step-by-step feeding a continuous strand of stapling Wire, of wire receiving means adapted successively to sever the received end portions of the Wire and to transfer the severed end portions as fastenings into a position from which they are inserted into a Work piece, a driver acting on a plurality of fastenings positioned in the line of drive thereby inserting the loWermost of said fastenings into the Work piece through the agency of the other fastenings and moving the succeeding fastening into position to be inserted during the succeeding fastening inserting operation of the driver, a deflector for successively bending portions of each fastening as it is being inserted thereby causing the fastening to follow a curved path through the Work piece without penetrating the entire thickness thereof and causing the leading end portion of the driven fastening to protrude from the work, and a member for clinching said protruding end portion
  • the combination With means for feeding a continuous strand of fastening material and means for successively severing pieces from the leading end portion of said strand to be successively inserted into a Work piece as fastenings, of means for inserting each fastening into the Work piece and countersinking it therein by engagement with a succeeding fastening, a delector adapted to engage successive portions of each fastening While it is being driven and to bend said portions thereby causing the fastening to follow a curved path through the work Without penetrating the entire thickness thereof and causing the leading end portion of the fastening to emerge and protrude from the Side of the Work piece from Where it Was inserted, and means for clinching said leading end portion of the fastening.
  • fastening inserting means including a thin, reciprocable driver and a stationary guideway for the driver
  • movable means for covering the driver in said guideway to insure support of the driver on all sides, over its entire length and in any position of its reciprocation.
  • fastening inserting means including a thin, reciprocable driver and a stationary driver guiding member provided with a guideway open on one side, stationary means for covering part of said guideway, a driver bar, a recess in said covering means to accommodate the driver bar, said re- 15 cess exposing part of said guideway, and means movable with the driver to cover the latter during the entire extent of its travel in those portions of the guideway which are exposed by said recess.
  • the combination with wire feeding means and fastening inserting means including a driver, of rotary means adapted to receive the leading end portion of the wire, means for rotating said rotary means at the end of the wire feeding operation to cause said rotary means to sever the fed-in portion of wire to form a fastening and to transfer said fastening to a position in which it will be engaged by the driver during the driving stroke of the latter, and driver guiding and supporting means adapted to support the driver at all sides thereof and over its entire extent in any position of its travel.
  • the combination with wire feeding means and fastening inserting means including a driver, of rotary means adapted to receive the leading end portion of the wire, means for rotating said rotary means after it has received the end portion of the wire thereby causing said rotary means to sever the end portion of the Wire to form a fastening and to transfer said fastening to a position in which it will be engaged by the driver during the driving stroke of the latter, driver guiding and supporting means provided with a guideway in which the driver is adapted to move and which is open on one side, and a movable driver guard covering the open side of said guideway.
  • the combination with wire feeding means and fastening inserting means including a driver, of rotary means adapted to receive the leading end portion of the wire, means for rotating said rotary means after it has received the end portion of the wire thereby causing said rotary means to sever the end portion of the wire to form a fastening and t transfer said fastening to a position in which it Will belengaged by the driver during the driving stroke of the latter, driver guiding and supporting means provided with a guideway in which the driver is adapted to move and which is open on one side, and a driver guard movable with the driver to cover the open side of said guideway.
  • the combination with wire feeding means and fastening inserting means including a driver and a driver bar, of rotary means adapted to receivethe leading end portion of the Wire, means for rotating said rotary means after it has received the end portion of the wire thereby causing said rotary means to sever the end portion of the wire to form a fastening and to transfer said fastening to a position in which it Will be engaged by the driver during the driving stroke of the latter, driver guiding and supporting means provided with a guideway in which the driver is adapted to move and which is open on one side, and a movable driver -guard pivotally secured to the driver bar and adapted to cover the open side of said guideway.
  • a fastening-inserting machine having, in combination, a work engagingY nozzle through which fastenings are inserted into a work piece, a driver movable in the nozzle, means for so controling the movement of the driver that the driver terminates its operative stroke a substantial distance from the Work presented to the nozzle, means for successively transferring fastenings 16 into the path of driving movement of the driver, and means for actuating the driver to insert the lowermost fastening positioned in the nozzle by means of a fastening interposed between the driver and said lowermost fastening.
  • a fastening-inserting machine having, in combination, a Work engaging nozzle, means for positioning a plurality of fastenings for insertion successively into a work piece, a reciprocating driver adapted to insert the lowermost of the fastenings and thereafter to return to its initial retracted position, means for so actuating the driver that its fastening inserting movement terminated with the driver spaced from the work a distance corresponding substantially to the length of a fastening to be inserted and with fastening located between the end of the nozzle and the driver, and means for transferring a fastening into the path of operative movement of the driver after the latter has been retracted into its inoperative position so that the last mentioned fastening is located between the driver and the fastening already contained in the nozzle.
  • a fastening-inserting machine having, in combination, a work engaging nozzle, means rior positioning a plurality of fastenings for insertion successively into a work piece, a reciprocating driver, means for reciprocating the driver between a, fastening inserting position and a retracted position, means for so determining the fastening inserting position of the driver that the latter is spaced a substantial distance from the work and a fastening is located in the nozzle between the lowerend of the nozzle and the driver, means for transferring a fastening into the path of operative movement of the driver on movement of the latter into its retracted position so that during the succeeding operative movement of the driver the fastening contained in the nozzle is inserted into the Work piece by means of the fastening succeeding it, the latter fastening being engaged by the driver.
  • a fastening-inserting machine having, in combination, a driver, means for presenting faste'nings to the driver to be so inserted into a work piece by the driver that one end portion of each fastening protrudes from the Work.
  • a clinching member adapted to clinch said protruding end portion of the fastening, means for retracting the driver and the clinching member against the action of spring means, means for holding the driver and the clinching member in their retracted positions, and separate means for successively releasing the driver and the clinching member to the forces of their respective spring means.
  • a fastening-inserting machine having, in combination, a work engaging nozzle, means for positioning a plurality of separate, alined fastenings for insertion successively into a Work piece, a fastening inserting driver, means for imparting a fastening inserting movement to the driver while in engagement With the uppermost of the aiined fastenings as a result of which the lowermost of the fastenings is driven out of the nozzle into the work and the succeeding fastening is moved into the nozzle to be inserted during the next fastening inserting movement of the driver.
  • a fastening-inserting machine having, in combination, a work engaging nozzle, means for positioning two alined fastenings for insertion successively into a Work piece, a fastening inserting driver, means for imparting a fastening inserting movement to the driver While in engagement With the uppermost of the alined fastenings 17 to drive the lowermost fastening out of the nozzle into the work piece and to countersink said lowermost fastening in the work piece by causing the uppermost fastening to move into and along the nozzle until the leading end of that fastening is positioned ush with the lower end of the nozzle.

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|||||| lllllIll R. H. LAWSON MACHINE FOR INSERTING FASTENINGS Filed` Jan. 23, 1945 4 Sheets-Sheet 1 Inventor RoberzHLan/Son Nov. 11, 1947.
@FHL #VUM Nov. 4l1,` 1947. R. H. LAwsoN MACHINE FOR INSERTING FASTENINGS j Filed Jan. 23, 1945 4 Sheets-Sheet 2 oberffl'. Lawson N.11,1947. R H. LAWS-ON v2,430,515
MACHINE FR INSERTING FASTENINGS Filed Jan. 23, 1945 4 Sheets-Sheet 3 R. H. LAwsoN MACHINE FOR INSERTING FASTENINGS Filed Jan. 23, 1945 Nov. 1l, 1947.
Patented Nov. 11, 1947 MACHINE FOR INSERTING FASTENINGS Robert H. Lawson, Beverly, Mass., assigner to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application January 23, 1945, Serial No. 574,086
2v2 Claims. (Cl. 125) This invention relates to an improved machine for inserting fastenings into Work pieces, such asy shoe parts, and is herein illustrated as applied to the fastening of shoe uppers to sole members after the upper of each shoe has been worked into lasted relation to the sole member.
In the manufacture of shoes of that type in which the margin of the upper is secured in lasted position in substantially parallel relation to the outer or bottom face of the insole preparatory to the attachment of an outsole directly to the margin of the upper by suitable means, it is Well known to employ fastenings such as staples to secure the upper to the insole, successive portions of each staple being progressively bent during the driving operation, but before entering the Work, by a deector, thereby causing the staple to follow a curved path in the Work Without penetrating the entire thickness thereof.
It is an object of the present invention to improve upon fastening inserting machines of the type just referred to and particularly to insure that fastenings, such as staples, are fully driven home or countersunk in the work surface, thus mitigating or entirely removing the danger that in the continuing processing of the shoe some of the inserted staples Will be pulled out, this being due to the fact that by inadvertence that particular staple was not fully driven home.
It is another object of the invention to provide a, fastening-inserting machine of very simple and compact construction having nevertheless accurate and dependable control over the formation and insertion of each fastening.
In one important aspect the invention accordingly provides a novel and improved machine for inserting fastenings according to which each fastening is inserted by means of another fastening of the same type, the rst mentioned fastening being bent While it is being inserted by the other fastening and this insertion being continued until the trailing end portion of the fastening which is being inserted is embedded or countersunk in the surface of the work. This has the particular advantage of insuring that in each instance the inserted fastening is fully driven home and iS accomplished by causing the other fastening to be the immediate and direct driving element in contact with the fastening being inserted rather than relying on the driver to be the direct driving element. The driver often can not be moved down sufficiently to countersink the driven fastening, and this is due to the fact that the driver is apt to interfere With the deflector which is mounted adjacent to the point of entry of the fastening into the Work.
The illustrated fastening forming and inserting machine has a supply of a continuous strand of fastening material such as staple Wire Which is intermittently fed by suitable feeding mechanism. The leading end portions of the Wire are successively received by Wire severing mechanism Where they are severed from the strand of Wire to form single-legged fastenings and whence they are transferred to a position to be engaged by a driver. Moreover, the illustrated machine is provided with a deflector adapted to engage successive portions of each fastening during its insertion thereby bending said portions and causing the fastening to follow a curved path through the Work Without penetrating the entire thickness thereof. In causing the single-legged fastening to curve through the Work its leading end portion is permitted, in accordance with the invention, to emerge again from the side of the work from Where it Was inserted, additional means being provided for clinching the emerged end portion of the driven fastening and inserting the eX- tremity of that clinched end portion into the surface of the Work.
While the invention is thus disclosed herein in its application to the attachment of shoe uppers to sole members, it will be recognized that "in a more general aspect the invention provides a novel machine for inserting fastenings not limited in utility to the fastening of `uppers nor to shoe manufacture. Such utilityis especially evident Where conditions are such that it is inconvenient, impracticable or undesirable to anchor the fastening by clinching it against the rear surface of the Work as, for example, Where the rear surface of the Work is not conveniently accessible, where the work is thicker than the length of the fastening, or Where it is undesirable to have the fastening penetrate, as it might, entirely through the Work.
These and other features of the invention Will now be described in detail in connection with the appended drawings and will be pointed out in the claims. Y
In the drawings:
Fig. 1 is a View in front elevation of the head of a fastening-inserting machine in which the invention is embodied;
Fig. 2 is a, View in right-hand side elevation of 5 the machine head, with certain parts broken away;
Fig. 3 is a plan View of the machine head, with certain parts broken away;
Fig. 4 is a detail View in front elevation of the 10 fastening-forming and -inserting mechanism of the machine illustrated in Fig. 1;
Fig. 5 is a sectional. Niew, thesectionbeing taken along the line V--V of Fig. 4;`
Fig. 6 is a plan View of a portion of a lasted l5V shoe bottom after the insertion therein of fastenlings which secure the marginaliportionlof. the upper in lasted position upon the shoe bottom;
Fig. l is a view in side elevation lofi alportion: of the forepart of a lasted shoe; partly 'infsectiong 2'() and illustrating the insertion of a fastening there-#- in prior to the clinching of oneend-v portioncf the fastening;
Fig. 8 is a view similar to Fig. '7 after thei clinching of the fastening. 25 As has been'stated,` the-inventionis `,concerned with the iinsertion of fasteningsf intolworkf parts primarily for theipurposev of securing together' such: work-partsxinf juxtaposition. #In the-illustrated example the worlr'isfashoe.comprising an -30 insole I (Figs. 6 to 8) on a last-Irland' a-n upperaU.y
which :has been-:tensioned over-the last and-the# marginallportion of-.which has beenfworked' over Y Y the'bottom face ofthe-insole:andisV securedin' i lastedpositionv by fastenings F 1inserted =through 435 the.marginaliportion-ofA the .upper and into the insole Le As illustrated-inFigsi.Fffancb 8,-.theinl.. serted lfasten-ing is! curved andlis so inserted that-a1 it does notpenetrate the :.entira thickness ofthe v work parts;with-.the resultthatathe sidefof the .lill combined workcpartsloppositenthe sideof entry A of the-fasteninguis .notpenetrated by' the fastening and; therefore, :remains: smooth -andrlunmutilated.'y 'The ffastenings, whichare -:single-. legged in-the -sense thattheyf,comprisefaesubstanii5 tiallyi lstraight. piece, .-.a-re ..formedl vfrom a: con-N.` y tinuous .strand of :fastening material, suchas wire.' The above-,described -inserted .-fastening.ris pro-V duced-.-.by progressively Y. bending 'then-straight fastening duringits insertion ztherebyfcausingthe o0 fasteningito follow 'ai curved-patlry through the z combined worl parts l withouti penetrating the entire. thickness-thereof.- `In the: usualfpractice, .l -r this is accomplished by providing a deflecting-v means such as a baille plate, which-acts on suce-55 cessive'portionsofthe fastening `before-these 4portions .enter the workr However,.the,provision .of such deflecti-ng means at the fpoint of entry of the fasteninglinto .theworle makes litimpossi-ble for I the usual fastening-inserting means, such .as a till driver., to remain in, contact -with the .trailing .endz l portionof the `fastening.Luntil.,that end. portion. is countersunlcin the surface .of the work, this... i by reasonbf the -interference .ofA the vdrivenwith the'deflecting means. It is. therefore contem.- 05 plated to insert each fastening into'the 'work by means of another.similar 'fastening'which'is in direct Contact with `the"trailing-end portion of the fasteningto be inserted.'*Thefastening whic'hcauses `the `otheriastening 'to be inserted (0 and which may'betermedthe inserting 'fastening may'itself `be engaged by thedriver: --This 'avoids anyA interference*between-'thedriver vand the baille plate by whichthe' driver eitherwould'become bent or be broken and enables the inserting-75 fastening to countersink or embed the fastening to be inserted into the work, since the interference of the inserting fastening with the baffle plate and any bending of that fastening is of no consequence owing to the fact that the inserting fastening, after having inserted a fastening, itself becomes a fastening to be bent and inserted. As illustrated, the fastening, which, as stated, is a straightl piece of wire before its insertion, is inserted endwise and is caused to follow a curved path through the work, the insertion of the fastening being continued until its trailing end portion is 4embedded inthe surface of the work and its leading end portion has emerged from the side of entry of the work and protrudes therefrom. Thereafter this leading end portion is clinched, that' is to say, bent-and caused to reenter the surface of the work.
The illustratedfastening-inserting machine is adapted-fte insert-fastenings of the above-mentionecrtype'in` th'emanner just described. The
Vutility-of the machineA is not limited to any particular fastening-inserting operation on any particula'i-ltypeof work. In the illustrated example, the machine is shown as adapted for use in securing the vtensioned marginal portion/of the shoe.-
upperU in lastedtrelationito theiinsole'I. though ano. lasting :mechanism propereis 'shown in thedrawings;.it ist@ be unolerstoodwtlfiatv such' lasting'mechanism may be provided in connection with the machine Yandmay/ comprise the yconventional'pair of power-operated pincerjaws for progressively tensioning the upperover the last andfor drawing its marginalportion inwardly over the'insole.. After a portion of themargin of theupperhas been drawn inwardly overthe insole--a'ndbeen laid' upon it, a fasteningv is in-v serted' through it while it isstill held ltensionecl, andinto .the insole to secure that portion of the uppermmarginto the insole. *4 The""fastenings which-fare `successively inserted' into rsuccessive portion'slofI the manually presented and fed work are formedin the machine from a continuous strand of fastening material,v such as wire, which is usually wound up on a reel (notshown) and is fed into themachine by mechanism to be de- The" illustrated machine comprises a box- Y shap'edframe. or headl i0 (FigsJ-l, 2 `and 3)V which hou'sesfor` supports the operating instrumentalitiesr of the machine and their actuatingvmechanismsl- The head i9 issecured to a suitable support, such as a column I2.
The principalmechanisms of the illustrated l machine are a wire-feeding mechanism, a wiresevering and fastening-transferring mechanism,
a fastening-driving mechanism, a. fastening-de-- f fleeting mechanism and a fasteninglinchin'g tor (fnotshown). z Driving connectiont between f the pulleyl I6 and the shaft lll isY established -or interrupted'by a pin clutch 2li, o'f conventional type-which is controlled by a treadle rod-22 cohnectedto a treadle (not shown) and provided with a spring 2d tending to elevate the treadle rod-22 and to disengage the clutch. vDownward movement of the-rod 22 by the treadle serves to.
engageftheclutch which is kept engaged as long as the=treadle rod is Amaintained. in its downward position so that the machine may be operated continuously through a series of cycles, As will be described, the cam shaft I4 carries a series of cams for actuating the operating elements of the above-mentioned mechanisms in a predetermined sequence.
The above-mentioned wire-feeding mechanism serves to advance a strand of wire in the machine and to feed the leading end portion of the wire strand intermittently into the wire-severing mechanism where a fastening is formed. The wire is preferably wound up on a reel (not shown) which conveniently is supported on top of the head I8. The illustrated wire-feeding mechanism is similar in construction and operation to the wire-feeding mechanism disclosed in United States Letters Patent No. 2,334,715, granted on November 23, 1943, on an application filed in my name. The support for this mechanism is a bracket 26 (Figs. 1 and 3) which is bolted to a plate-like bracket er support 28 of somewhat triangular shape. The support 28 is bolted at opposite sides to the machine frame and serves to carry various of the above-mentioned mechanisms, as will be described. In brief, the wirefeeding mechanism comprises a wire feed roll 3l) which is intermittently rotated in one direction to advance the wire in a downward direction and which to this end cooperates with a pressure roll 82 provided with a groove in its periphery in which the wire is received, the wire passing between the two rolls 30 and 32. The roll 32 is spring pressed toward the roll 3B and is rotatable in a pivotally mounted bearing piece. A pivotally mounted and manually operated throw-out lever @It having a cam portion at its hub to move the roll 32 out of contact with the roll 38 so as te interrupt the feeding of the wire. Normally, the throw-out lever 3@ is so positioned that it permits the spring pressed roll 32 to contact the roll 38 thus to enable the latter to advance the wire step by step. To this end the roll 38 is mounted to rotate freely about the axis of a stub shaft secured in the bracket 26 and has integral with one face of it a ratchet wheel 3B which is adapted to be rotated intermittently by a spring-biased pawl 38 pivoted on an arm 40 secured on the said stub-shaft carrying the roll 38. The arm i0 is rocked by pivotal engagementwith a link 42 extending upwardly therefrom and pivotally connected at its upper end to a cam iever 84 rotatably mounted on a shaft d6 secured in suitable bearings in the machine frame. The cam lever 44 is in the form of a bell crank lever and has a rearwardly and downwardly extending arm 88 (Fig. 2) which carries a cam roll 58 held by a spring 52 against the periphery of a cam disk -58 secured on the cam shaft I8. The spring 52 is tensioned between the arm e8 and a transverse bar 55 secured in the machine frame. The cam disk 54 is so shaped that the cam lever eli is swung downward at a predetermined point in each cycle of operation with the result that the pawl 38, which is held by its spring in engagement with a tooth in the ratchet wheel 38, causes the latter aswell as the feed roll 38! to be rotated a predetermined distance. As a result of the succeeding upward movement of the cam lever 44 the pawl 38 is caused to ride idly back over the teeth of the now stationary ratchet wheel 126 into its initial position where it again engages a tooth of the ratchet wheel 36 in readiness to rotate the latter when the cam lever i4 is next operated.
The wire which passes from the reel through lil) 6 suitable wire guides between the rolls 38 and 32 is fed into and through a tube 58 which is clamped to the brackets 26 and 28 and is in alinement with a grooved wire guiding member 88 of rectangular cross-section closely fitting into a channel provided in the front face of the bracket 28 and covered partly by a-bracket 82 and partly by a plate 64, both being detachably secured to the bracket 28. The groove in the guiding member 60 extends longitudinally thereof and is in alinement with the wire passage of the tube 58 so that the wire is fed into and through the guiding member El! the groove of which, since it is covered by the bracket 62 and the plate 6ft, represents a wire guiding passage or guideway enclosed on all sides but, nevertheless, readily accessible.
After a length of wire has been fed by the above-described mechanism through the wire guiding member @il a piece is severed from the leading' end portion of the wire strand to become a fastening, Thereupon the fastening is transferret*A te position from which it can be driven by the fastening driving mechanism, The wiresevering and fastening-transferring mechanism comprises a roll F8 (Figs. 1 and 4) which is seated in a circular recess 'dl provided in the front face of the bracket 28 and is covered by the plate 64. The roll li) is integral with a stem 12 which is rotatably mounted in a horizontal bore provided in the bracket 28 through which bore it extends rearwardly. The front face of the roll 18 is provided with a diagonally extending groove I4 the open side of which is covered by the plate 64, and which is adapted to receive the wire when .fed by the above-described feeding mechanism. The above-mentioned wire guiding member 68 is rounded at its bottom end in conformity with the curvature of the periphery of the roll i8 and terminates in close proximity to that periphery. The roll 18 is rotated between two predetermined positions one of which may be called the Wire receiving position and the other the fastening inserting position. In the Wire receiving position the groove I4 of the roll is in alinement with the groove of the Wire guiding member 58, and in the fastening inserting position the groove lli is in alinement with the path of movement of a driver, to be described, the axis of rotation of the roll 18 lying in the intersection of the line of wire feed and the path of movement of the driver.
To rotate the roll 18 back and forth between its two predetermined positions, the stem l2 has clamped to it an arm 'It extending laterally therefrom and pivotally connected to a long link 78 extending upwardly in the machine. The uper end of the link 18 is pivotally connected to one of two parallel arms provided at one end of an l-l-shaped member 852 (Fig. 3) the other end of which is pivotally secured by a pin 82 to a bracket on the machine frame. The pivotal conriection between the link 13 and the member 8E! is made by a screw 88 the stem of which is offset from or eccentric to the head and extends through the above-mentioned arm of the H-shaped member 88. It is secured in place by a nut 85. After loosening the nut 88 the screw 84 may be rotated so as to adjust the position of the link 'i8 heightwise of the machine thus to adjust the predetermined positions of the roll 'i8 to be in exact alinement with the wire passage of the guiding member or with the path of travel of the driver. To rotate the roll i8 the til-shaped member 88 is rocked about the axis of the pin 82 and to this end the other free arm of the member 88 is pivotally connected by a link 88 (Fig. l) to a canr.-lever00 pivotally securedv to the shaftg 05. The cam lever-00 is in the ormof. a bell` crank leverandhasfa depending arm 02 (Fig. 3) carrying a-:rolliyil which is held against the peripheryl of acam disk 005on thecam shaft I by means or f a springif extended between the cam lever 00 andthebar 50. :The cam00- is so designed that v the train-lof elements actuated by it will rotate the fasteningthus formed is a straight piece of wire.l Thetprincipal element of the fastening driving mechanism is,A of course, the driver |00 (Figs. 4, 7 andi-8);. mentioned` above, which is of very small cross-section, and as a matter of fact in the illustratedexample, it is as thin as the wire from whichthefastenings areformed. As will be described -the driver |00 is so mounted that it is supported-at all of its sides and over its entire extentin anyposition of its reciprocatory-movement-The driver isyreciprocated in a guideway |02;(Figs.;4and 5) provided in and along the frontface of a guiding member ,|00 of rectangular cross-section which is seated in a recess provided in the vfront face of the plate-like bracket 28 with the front face `of the guiding member |04 ush with that of the bracket 28. The guiding member -|04 isv covered in part by the above-mentioned plate 04 and in part by a plate |00 abutting the upper-'right hand end of the plate 00 and securedl to. the frontface of the bracket 20. As illustrated best in Fig-4, the lower end of the guiding member |04 `is. rounded and located in the immediate vicinity of the periphery of the wire-.severing-roll 'l0 so that Ain the Afastening drivingposition of the `roll .10 the groove 'i0 provided. therein is in alinement with thev driver guideway |02. Below the roll l0, as seen in the directionof. drive, there-isprovided in a recess in the `front faceoiv the bracket 20 a guidepiece- |05 arrangedand grooved in the same manneras the guiding member |00 -and covered by theplate 04. The severed fastening, when being drivenv downwardly by the driver |00, is pushed out ofthe groove 'lli ofthe roll l0 into the groove in theY guidepiece |05, rthe two grooves being alined.v Tnelower end of the guidepiece |00 terminateswith the .lower end of the bracket 28 and the plate 00 against which the work is held and thusconstitutes a nozzle through which the fasteningsareinserted into the work. The abovementionedplate` |05` is provided over the entire lengthof its rear face with a recess |07 in which is movable a driver bar |08. rlhe driver bar |08 to which the driver |00 is attached, as will be presently described, is reciprocated and is in sliding contact with the front face of the bracket 20. The driver bar. |08 is rabbeted at its lower end to form a, shouldered portion |00 of reduced thickness. To secure the driver |00 to the driver bar |08 the former is provided at its upper end with a n H0 (Fig. 5) which extends into a slot provided in one end of a pin l2 inserted through the portion |00 of the driver bar, the inner end of the pin being flush with the inside face of the portion|09 and the outerend of the pini i2 pro-i jecting from the-front face of the portion |00.`
Driven-through part'of the driver bar |08 and part of the portion |09 and located in tangential relation to the pin ||2 is a hardened pin H0 theinner end vof which is provided with a small ridge f extending into the guideway |02 and engaging the upper end of the driver |00 and its n I0. Thus,
on reciprocation of the driver bar |00 by mecha-- nism to be described, the driver |00 is recipro cated along the guideway |02. The driver |00 isof sufcient length to engage, when on its driving stroke, a fastening held by the roll 'l0 and to drive-it downwardly into the guidepiece l|05 from which it is inserted into the work.
, In view of the above-mentioned provision oi i the recess |01 in the plate |06 serving to accommodate the driverbar |00, theguideway |02 for the driver |00 is not covered over its entire eX- s tent. To insure, nevertheless, that the driver is supported all around over its entire length and in any position of its travel, the following is provided. Pivotally mounted on the projecting portion of the pin ||2 vand lying against the front the driver |00, the guiding member l l0 is movedV downwardly and to the left of Fig. 4, the direction of; movement being determined by the slot |20, and thus it continuously covers the driver. Reversely, on retraction of the driver bar 00 and the driver |00, the guiding member Vi 60 is retracted.
to cover the driver in the upper portion of its travel.
To reciprocate the driver bar |08 and the driver |00-the following mechanism is provided. lThe driver bar |00 has a fork-shaped upper end |22 (Figs. `1v and 2) carryinga transverse pin |213v which extends through a'slot |20 provided in one end of an arm |28. The arm |20 is secured on a shaft |30 rotatably mounted in bearingsprovided ina U-shaped bracket |32 which isA integral with the bracket 02. -Anotherarm |30 is secured to the shaft |30 and is actuated by mechanism, to be described, to load two heavy torsion springs |30 and-|33 (Figs. 2 and 3) coiled about the shaft |30 on opposite sides of the hub ofthe arm |28.
One end of each torsion spring engages the top l face .of a lug provided on the arm |20 andthe other end rests against a pin secured in theV bracket |32 (see Fig. l). [is will be noted, on upward rotation of the arm |30', the arm |20 is moved upwardly in a counterclockwise direction, as viewed in Fig. 1, thereby loading the springs |36 and |38. Mechanism is provided for holding the springs |36 and |38 loaded and thus holding the arm |28 cocked. This mechanism comprises a latch arm |40 (Fig. l) secured to the shaft |30 and cooperating with a pawl |02 pivoted substantially midway between its ends on an upward ex ension |00 of the bracket |32. The left-hand end of the pawlV |02 (as viewed in Fig. 1) is connected by a spring E05 to the bracket |32. rlihe spring |00 thus tends to rotate the-pawl |02 in a counterclockwise direction, as viewed in Fig, l. During the cooking of the arm |28 the latch arm |00, which is rotated with the arm |20since it is secured to the same shaft |30, rides along the under surface of the pawl |02 until it snaps behind a shoulder |48 of the pawl :12, thus holding the arm |28 cocked.
The above-mentioned mechanism for actuating the arm |54 to load the springs |30 and |33 and to cock the arm |25 is constructed and arranged as follows: The end of the arm |34 remote from the shaft |30 is fork-shaped and carries a block |50 (Fig. 1)l pivotally secured thereto by a transverse pin |52 extending through the forked end of the arm |34. The block |50 has extending through it, above and at right angles to the pin |52, another pin |55 the opposite ends of which extend outwardly from the block |50through vertical slots |55` (Fig. 2) provided in the two prongs of the forkshaped lower end |58 of a link |60, the upper end of which is pivotally connected to a cam lever |62, to be described. The end faces of the block |50 are in sliding engagement with the inner faces of the prongs of the link |60, Elevation of the link |50 thus causes upward rotation of the arm |55, with the results described.
To release the pawl |42 with the result that the loaded springs |35 and |38 swing the arm |28 downward in a clockwise direction (as viewed in Fig. l) to actuate the driver |00, there is provided a pin |85 extending from the link |50 substantially midway between the upper and lower ends thereof. As will be noted, on downward movement of the link |60 and assuming that the arm |28 is held in its upper cocked position, there is a lost motion between the then stationary pin |54 and the link |50 in view of the provision of the vertical slots |55. Upon `engagement of the downward moving pin |5|| with the right-hand arm `of the pawl |42 (as viewed Fig. l) extending into the path of movement of the pin |64, the pawl |42 is tripped to release the latch arm |40 and to [free the springs |35 and |38 to actuate the arm |28. On upward movement of the link |00, after an operating movement has been imparted to the arm |28 and thus to the driver |00, the erm |34 is again rotated upward to load the springs |35 and |38, there being then no lost motion between the link |50 and the pin |54 carried by the arm |311 since, as a result of the downward movement of the arm |28 by the springs |38 and |38, the arm |34 also was moved downward and located the pin |54 in the lower ends of the slots |56.
The above-mentioned cam lever |52, `which moves the link |00 up and down at predetermined points in each cycle of the machine, is pivotally mounted on the shaft 46 and is in the form of a bell crank lever having a downwardly extending arm |55 (Fig. 2) carrying a roll |68 which is held by a spring against the periphery of a cam disk |72 secured on the cam shaft I4.
As illustrated in Fig. 1, the driver actuating arm |28 is provided at its lower face with an abutment |14 which, during downward movement of the arm |23, is caused to strike upon a bumper |16 secured to the bracket |32 to cushion the blow of the arrn |28 and to limit the extent of its operative downward movement, as well as that of the driver.
As has been stated, the driver |00, on its driving stroke, moves downwardly along the guideway |02 into engagement with the vfastening contained in the groove 'I4 of the roll 'l0 and, as a result of its continued downward movement, causes the fastening to be driven into the lower guiding pieceor nozzle |05. However, the
10 lower end off the driver |00, at the termination of its driving stroke, is located a considerable distance from the surface of the work presented against the lower end. of the guiding piece |05 (see Figs. '7 and 8). This distance corresponds substantially to the length of one fastening. Hence, it is impossible for the driver to insert the fastening F engaged by it into the work and drive its trailing end portion home as would be desirable. To cause each fastening to be nevertheless fully inserted into the work and to have its trailing end portion countersunk into the surface of the work the arrangement in the illustrated machine is such that each fastening is inserted through the agency of the succeeding fastening with which the driver |00 is in contact. This arrangement is of considerable advantage in view of the provision of fastening deilecting means which, as illustrated, is a baille plate |80 (Figs. 1, 4, '7 and 8). The baille plate is located opposite the point of emergence of the fastening from the nozzle |05 and is in contact with the work. Its purpose is to bend successive portions of the fastening, as the latter is being driven, before these portions enter the work so as to cause the fastening to follow a curved path in the work without penetrating the entire thickness thereof. If the arrangement were such that the driver |00 would insert each fastening into the work by direct contact with the fastening, the stroke of the driver, of course, would of necessity be much longer but in no case can its stroke be so lengthened that the driver could countersink the trailing end portion of the fastening into the surface of the work in view of the unavoidable interference of the driver with `the baffle plate. If such an attempt were made,
the driver would either become bent or its lower end would break off. This disadvantage is completely avoided by utilizing the fastening succeeding the one to be inserted as the direct driving means, since a slight bending of the forward end of the inserting fastening by the baffle plate at the end of the inserting operation (see Fig. 8) is immaterial, to say the least, and may be considered to be of advantage because that fastening, which becomes the next fastening to be inserted, is to be b'ent anyhow when being inserted into the work so as to cause it to follow a curved path therethrough.
To obtain different degrees of curvatures of the inserted fastenings to accommodatevarious work thicknesses, the baille plate is adjustable with relation to the guiding piece or nozzle |05. To this end it is provided with lugs |82 having slots (not shown) through which extend screws |84 adjustably securing the baflle plate |80 to the plate 54 and the bracket 28, a set screw |85 being provided in the baille plate |80 for making fine adjustments.
As illustrated in Fig. '7 the fastening F in being inserted into the work and following a curved path therethrough reemerges with its leading end portion from that surface of the work from which it was caused to enter the work. This protruding reemerged leading end portion of the fastening is then clinched by being turned back into the work.
For clinching the reemerged leading end portion of the inserted fastening the above-mentioned clinching mechanism is provided which comprises a bar-shaped clinching member 200 (Figs. 1 and 4) having a laterally bent lower end provided with a concave clinching face terminating atlone edge in a projection 202. The
work, as-illustrated in-Fig. 8..'1This reinsertion ofthe extremity of the fastening-.into the work is made possible by the vprovision of the projection 202 at the clinching endof the clinching m'emb'er 200. The clinching member is mo'vableinspaced guideways 204 provided inthe bracket 28 and is l connected at its upper end-tolabarZ (Fig. 1) the upper end'of which is pivotally secured to an arm 208 secured tofashaft-"Z I--rot`atablein bearposition-with the groove 14 in alinement with the groove of the guiding member 60. -This having been completed, the cam 96 of the wire-severjring mechanismimparts motion to the lcam lever 90, `elevating the-link 'I8 with the yresult -that the roll l0 is rotated linto its fastening inserting '-'positon in which the groove 'F4 is in al-inement with the grooves in the guiding members |04 and `f |05. The leading end portion of the wire, which previously hasfbeen fed into the roll |0,'is thus severed from its'strand 'to form -a-fastening due to the shearing action between the roll l0 and the guide-member 00, and this fastening is then located vin the path o'f travel of the driver |00.
ings provided in abrack'et 2|2 (Fig. 3). A spring 2M, which is stretched out` between the machine `Then the cam- |12 imparts motion to the 'cam lever |62, moving the link |60 downward to releasethe pawl-l42, freeing the arm |28 -to the frame and the outerfend ofthe arinf 208, tends so to rotate thearm" 208 that the clinching member 200 is caused to clinch-the reemerged end pormanner. Y The spring'I 2|4 inorder to lperform-this roperation -is loaded and-to 'this end the retracting v movement o'f the driver'bar-f |08 'which has been described is utilized to impart an upward movement to the arm 208 into a 'cocked position by the engagement of the outerendiof'the arm |28 with a projection2|providedat'thelower surface of the arm 208.` The arm`208 is held cocked by the engagement of a sh0ulder2'l8 (Fig. l) provided on a tail piece'220of the-arm 20S-with a'latch 222 withdraw the latch 222 and to-release the arm 208 to the action of thev loadedv spring-i214, the latch 222 is pivotally connected tothe` lower end of a bar 224 the upper "end of which is pivoted to a actionof the loaded springs |36 andv |38 to actuvate the driver 00. V.The driver in descending -engage's thafastenng F located in the roll 'l0 tion of the -fastening F inthe above-described and drives it into the-nozzle4 |05 inwhich the preceding fastening already is located in fa position to be Ydriven into the work presented to the lower end of the nozzle |05. 'The just mentioned fastening,- alread-ylocated in the nozzle |05, is
- Ithus insertedinto the Iwork and by reason oi' cam lever 226 secured von the shaft 40. Thecam f lever 226 is in the form of'a bell'crank lever and has a depending arm 228 (Fig. 2) carrying a roll 230 held by a spring:Y 232 against theperiphery of a cam disk 23d-secured onthecam shaft I4. The cam disk 234fis so shapedthat at the proper chine the bar 224 is raised to permit the actuation of the clinching member200 bythe spring 2|4.
To limit and adjustably to' determine the eX- tent of downward movement of Ythe clinching member 200, thereis pivotally secured to the outer end of the arm 208 a vertical rod-236 (Fig. l) extending through a hole in a lug 230 provided on the bracket 2|2. The rod'235 has threaded on its upper end a nut 240 carrying a washer and a lock nut 242. Upon downward 'movement of the arm 208 by the spring 2|4 the washer of the nut 240 is caused to-Strike the top faceof the lug 238, thus terminating the downward movement of the clinching memberV 200.
The operation of the machine is apparent from the foregoing description but may besummarized as follows: Assuming the machine parts -to be in their initial inoperative positions,` with bothv the driver |00 and the clinching member" 200 retracted and cocked, the operation of the machine is started by the lowering of the-'treadle rod 22, thus tripping the clutch 2'0 v`and'initiating the rotation of the cam shaft |4.- As'a Vresult the a swinging movement to the cam lever 44, movthe provision 'ofthe Lbaffle plate |80 it is caused to follow a curved-path through the work with its `leading endportion reemerging'from the side off entry of the-Work. Then the cam' 234'renders thecam lever y22S-active to lelevate the lat`ch'222 pivoted at one end to the machine frame and en- 'l' f andfto' trip'the'afm 203,'thus'enabling the loaded gaging With its-other end the shoulder 2 |8. To l" spring 2M `toactuate the clinching member 200 toengage the "reemerged leading end portion of .the-'inserted `fastening 'and -to clinch'it against 1 and reinsert-it-into the surface of the work while the trailing endv portionfofthis fastening is held by thel succeeding fastening and the driver.
`v`Thereafter the cam 96 actuates the cam lever 90 `in the-oppositedirection to turn the roll 210 back into its wire receiving'position after thecam |12 of the driving' mechanism has `caused the driver |00 to be retracted at which time the arm |28 of time during each cycle of operations of the mathe-'driver-operating mechanism, by engagement with the projection`2|6 on the`arm'208 of the `mechanism for Ioperatingthe clinching member,
' 'retract's theclinching member 200, both the arms |28 andZBthen being held in their elevated cocked positions by theirrespectivelocking mechanisms'with their actuating springs loaded in readiness for thenext fastening inserting operation.
Having thus described myA invention; what I "claim as'new 'and desire to'secure by Letters Patent .of the United States is:
-l". In'afastening-inserting machine, the com- 'bination'withmeans for feeding la continuous form fastenings for insertion into a'work piece, ofmeans for `inserting each'fastening into the work piece by. engagement with a succeeding fastening 2. In a fastening-inserting machine, the combination withmeans' for" feeding a continuous 'strandof fastening material, and means adapted ing the link 42 ldownwardly to' rotate the wire feed roll 30 a predetermined distance to advance they leading end portion of they wire strand through the guiding member 60 into the roll 10 which, at that time, assumes its wire receiving to receive the `le'ading'end portion of said strand and to sever from saids'trand' a' piece to form 'av single-'legged' fastening, of'a passageway for receivinga plurality offastenings, and means movable in said passageway and arranged by engagement with the 'uppermost fastening in said "passageway'to causethe' lowermost fastening to ber inserted into-the work.
3. In a fastening-insertingmachine; thel combination with means for feeding a continuous strand of fastening material, and means for severing pieces from said strand successively to form fastenings for insertion into a Work piece, of means for inserting each fastening into the Work piece by engagement with a succeeding fastening, and a deflector adapted to engage successive portions of each fastening during its insertion and to bend said portions thereby causing the fastening to follow a curved path through the Work Without penetrating the entire thickness thereof.
4. In a fastening-inserting machine, the combination with means for feeding a continuous strand of fastening material, and means for successively severing pieces from said strand to be successively inserted into a Work piece as fastenings, of means for inserting each fastening into the work piece and countersinking it therein by engagement with a succeeding fastening, and a deflector adapted to engage successive portions of each fastening While it is being driven and to bend said portions thereby causing the fastening to follow a curved path through the work Without penetrating the entire thickness thereof.
5. A fastening-inserting machine having, in combination, means for feeding a continuous strand of fastening material and means adapted to receive the leading end portion of said strand and to sever it so as to form a single-legged fastening, said severing means being arranged to transfer the fastening from its severing position into a driving position, a driver for inserting the fastening into a Work piece, a deflector adapted to bend successive portions of the fastening before they enter the Work piece, thereby causing the fastening to curve through the Work piece during the insertion thereof without penetrating the entire thickness of the work piece and causing the leading end portion of the fastening to emerge from the side of the Work piece from Where it was inserted, and means for clinching said leading end portion of the fastening.
6. A fastening-inserting machine having, in combination, means for feeding a continuous strand of fastening material and means adapted succesively to receive the leading end portion of said strand and to sever it so as to form successively single-legged fastenings, said severing means being arranged successively to transfer each fastening from its severing position into a driving position, means for inserting each fastening into a work piece by engagement With a succeeding fastening, a deflector adapted to bend successive portions of each fastening before they enter the Work piece thereby causing the fastening to curve through thev Work piece during the insertion thereof without penetrating the entire thickness of the work piece and causing the leading end portion of the fastening to emerge from the side of the Work piece from Where it was inserted, and means for clinching said leading end portion of the fastening.
7. In a fastening-inserting machine, the combination with means for step-by-step feeding a continuous strand of stapling Wire, of wire receiving means adapted successively to sever the received end portions of the wire and to transfer the severed end portions as fastenings into a position from which they are inserted into a Work piece, a driver acting on a plurality of fastenings positioned in the line of drive thereby inserting the lowermost of said fastenings through the agency of the other fastenings and moving the succeeding fastening into position to be inserted during the succeeding fastening inserting operation of the driver.
8. In a fastening-inserting machine, the combination with means for step-by-step feeding a continuous strand of stapling Wire, of Wire receiving means adapted successively to sever the received end portions of the Wire and to transfer the severedend portions as fastenings into a position from which they are inserted into a work piece, a driver acting on a plurality of fastenings positioned in the line of drive thereby inserting the lowermost of said fastenings into the work piece through the agency of the other fastenings and moving the succeeding fastening into position to be inserted during the succeeding fastening inserting operation of the driver, and a deector for successively bending portions of each fastening as it is being inserted thereby causing the fastening to follow a curved path through the work piece Without penetrating the entire thickness thereof.
9. In a fastening-inserting machine, the comfbination With means for step-by-step feeding a continuous strand of stapling Wire, of wire receiving means adapted successively to sever the received end portions of the Wire and to transfer the severed end portions as fastenings into a position from which they are inserted into a Work piece, a driver acting on a plurality of fastenings positioned in the line of drive thereby inserting the loWermost of said fastenings into the Work piece through the agency of the other fastenings and moving the succeeding fastening into position to be inserted during the succeeding fastening inserting operation of the driver, a deflector for successively bending portions of each fastening as it is being inserted thereby causing the fastening to follow a curved path through the Work piece without penetrating the entire thickness thereof and causing the leading end portion of the driven fastening to protrude from the work, and a member for clinching said protruding end portion of the fastening.
10. In a fastening-inserting machine, the combination With means for feeding a continuous strand of fastening material and means for successively severing pieces from the leading end portion of said strand to be successively inserted into a Work piece as fastenings, of means for inserting each fastening into the Work piece and countersinking it therein by engagement with a succeeding fastening, a delector adapted to engage successive portions of each fastening While it is being driven and to bend said portions thereby causing the fastening to follow a curved path through the work Without penetrating the entire thickness thereof and causing the leading end portion of the fastening to emerge and protrude from the Side of the Work piece from Where it Was inserted, and means for clinching said leading end portion of the fastening.
11. In a fastening-inserting machine having fastening inserting means including a thin, reciprocable driver and a stationary guideway for the driver, the provision of movable means for covering the driver in said guideway to insure support of the driver on all sides, over its entire length and in any position of its reciprocation.
12. In a fastening-inserting machine having fastening inserting means including a thin, reciprocable driver and a stationary driver guiding member provided with a guideway open on one side, stationary means for covering part of said guideway, a driver bar, a recess in said covering means to accommodate the driver bar, said re- 15 cess exposing part of said guideway, and means movable with the driver to cover the latter during the entire extent of its travel in those portions of the guideway which are exposed by said recess.
13. In a fastening-inserting machine, the combination with wire feeding means and fastening inserting means including a driver, of rotary means adapted to receive the leading end portion of the wire, means for rotating said rotary means at the end of the wire feeding operation to cause said rotary means to sever the fed-in portion of wire to form a fastening and to transfer said fastening to a position in which it will be engaged by the driver during the driving stroke of the latter, and driver guiding and supporting means adapted to support the driver at all sides thereof and over its entire extent in any position of its travel.
14. In a fastening-inserting machine, the combination with wire feeding means and fastening inserting means including a driver, of rotary means adapted to receive the leading end portion of the wire, means for rotating said rotary means after it has received the end portion of the wire thereby causing said rotary means to sever the end portion of the Wire to form a fastening and to transfer said fastening to a position in which it will be engaged by the driver during the driving stroke of the latter, driver guiding and supporting means provided with a guideway in which the driver is adapted to move and which is open on one side, and a movable driver guard covering the open side of said guideway.
15. In a fastening-inserting machine, the combination with wire feeding means and fastening inserting means including a driver, of rotary means adapted to receive the leading end portion of the wire, means for rotating said rotary means after it has received the end portion of the wire thereby causing said rotary means to sever the end portion of the wire to form a fastening and t transfer said fastening to a position in which it Will belengaged by the driver during the driving stroke of the latter, driver guiding and supporting means provided with a guideway in which the driver is adapted to move and which is open on one side, and a driver guard movable with the driver to cover the open side of said guideway.
16. In a fastening-inserting machine, the combination with wire feeding means and fastening inserting means including a driver and a driver bar, of rotary means adapted to receivethe leading end portion of the Wire, means for rotating said rotary means after it has received the end portion of the wire thereby causing said rotary means to sever the end portion of the wire to form a fastening and to transfer said fastening to a position in which it Will be engaged by the driver during the driving stroke of the latter, driver guiding and supporting means provided with a guideway in which the driver is adapted to move and which is open on one side, and a movable driver -guard pivotally secured to the driver bar and adapted to cover the open side of said guideway.
17. A fastening-inserting machine having, in combination, a work engagingY nozzle through which fastenings are inserted into a work piece, a driver movable in the nozzle, means for so controling the movement of the driver that the driver terminates its operative stroke a substantial distance from the Work presented to the nozzle, means for successively transferring fastenings 16 into the path of driving movement of the driver, and means for actuating the driver to insert the lowermost fastening positioned in the nozzle by means of a fastening interposed between the driver and said lowermost fastening.
18. A fastening-inserting machine having, in combination, a Work engaging nozzle, means for positioning a plurality of fastenings for insertion successively into a work piece, a reciprocating driver adapted to insert the lowermost of the fastenings and thereafter to return to its initial retracted position, means for so actuating the driver that its fastening inserting movement terminated with the driver spaced from the work a distance corresponding substantially to the length of a fastening to be inserted and with fastening located between the end of the nozzle and the driver, and means for transferring a fastening into the path of operative movement of the driver after the latter has been retracted into its inoperative position so that the last mentioned fastening is located between the driver and the fastening already contained in the nozzle.
19. A fastening-inserting machine having, in combination, a work engaging nozzle, means rior positioning a plurality of fastenings for insertion successively into a work piece, a reciprocating driver, means for reciprocating the driver between a, fastening inserting position and a retracted position, means for so determining the fastening inserting position of the driver that the latter is spaced a substantial distance from the work and a fastening is located in the nozzle between the lowerend of the nozzle and the driver, means for transferring a fastening into the path of operative movement of the driver on movement of the latter into its retracted position so that during the succeeding operative movement of the driver the fastening contained in the nozzle is inserted into the Work piece by means of the fastening succeeding it, the latter fastening being engaged by the driver.
20. A fastening-inserting machine having, in combination, a driver, means for presenting faste'nings to the driver to be so inserted into a work piece by the driver that one end portion of each fastening protrudes from the Work. a clinching member adapted to clinch said protruding end portion of the fastening, means for retracting the driver and the clinching member against the action of spring means, means for holding the driver and the clinching member in their retracted positions, and separate means for successively releasing the driver and the clinching member to the forces of their respective spring means.
2l. A fastening-inserting machine having, in combination, a work engaging nozzle, means for positioning a plurality of separate, alined fastenings for insertion successively into a Work piece, a fastening inserting driver, means for imparting a fastening inserting movement to the driver while in engagement With the uppermost of the aiined fastenings as a result of which the lowermost of the fastenings is driven out of the nozzle into the work and the succeeding fastening is moved into the nozzle to be inserted during the next fastening inserting movement of the driver.
22. A fastening-inserting machine having, in combination, a work engaging nozzle, means for positioning two alined fastenings for insertion successively into a Work piece, a fastening inserting driver, means for imparting a fastening inserting movement to the driver While in engagement With the uppermost of the alined fastenings 17 to drive the lowermost fastening out of the nozzle into the work piece and to countersink said lowermost fastening in the work piece by causing the uppermost fastening to move into and along the nozzle until the leading end of that fastening is positioned ush with the lower end of the nozzle.
ROBERT H. LAWSON.
REFERENCES CITED The following references are of record in the le of this patent:
Number UNITED STATES PATENTS Name Date Frechette May 15, 1894 Clark et al Jan. 28, 1902 LlaChapelle Dec. 22, 1931 MacDonald Oct. 24, 1933 MacDonald May 28, 1940 Foster Dec. 20, 1932 Gilette Mar. 17, 1936
US574086A 1945-01-23 1945-01-23 Machine for inserting fastenings Expired - Lifetime US2430515A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US519859A (en) * 1894-05-15 frechette
US692180A (en) * 1900-05-02 1902-01-28 James H Clark Automatic box-making machine.
US1837275A (en) * 1929-03-29 1931-12-22 United Shoe Machinery Corp Fastening inserting mechanism
US1891260A (en) * 1929-10-17 1932-12-20 United Shoe Machinery Corp Manufacture of turn shoes
US1931615A (en) * 1931-03-23 1933-10-24 United Shoc Machinery Corp Fastening inserting machine
US2034031A (en) * 1934-08-02 1936-03-17 United Shoe Machinery Corp Manufacture of shoes
US2202259A (en) * 1936-11-25 1940-05-28 Archibald V Macdonald Stapling machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US519859A (en) * 1894-05-15 frechette
US692180A (en) * 1900-05-02 1902-01-28 James H Clark Automatic box-making machine.
US1837275A (en) * 1929-03-29 1931-12-22 United Shoe Machinery Corp Fastening inserting mechanism
US1891260A (en) * 1929-10-17 1932-12-20 United Shoe Machinery Corp Manufacture of turn shoes
US1931615A (en) * 1931-03-23 1933-10-24 United Shoc Machinery Corp Fastening inserting machine
US2034031A (en) * 1934-08-02 1936-03-17 United Shoe Machinery Corp Manufacture of shoes
US2202259A (en) * 1936-11-25 1940-05-28 Archibald V Macdonald Stapling machine

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