US2186046A - Fastening inserting machine - Google Patents

Description

FASTENING. INSERTING MACHINE Filed Jung 16, 1938 2 Sheets-Sheet 1 Jim 1940- A. R. SCHOENKY 2,186,046

FASTENING INSERTING MACHINE Filed June 16, 1938 2 Shets-Sheet 2 //v VEA/ 727R 49 45 if W6;- %6%,

Patented Jan. 9, 1940 UNITED STATES PATENT OFFICE or to United Shoe Machinery Corporation,

Borough of Flemington, N. J., a corporation of New Jersey Application June 16, 1938, Serial No. 214,065

. 2(1Claims.

This invention relates to machines for inserting-fastenings in shoes or shoe parts and isillustrated herein as embodied in a machine of the I type shown in Letters Patent of the United States 5 No. 1,702,364, granted February 19, 1929 on an application filed in the name of Arthur F. Pym.

It is an object of the invention to provide an improved work positioning means which will find special application in machines of the type shown in the above-mentioned patent. It is to be understood, however, th'atthe invention and various important features thereof may have other applications and uses. More specifically, it is an object of the invention to provide a work position- 1 mg means which will be unyielding in an upward direction to predetermine the location of. a work piece with relation to a fastening inserting mechanism, and flexible or yielding in a lateral direc:

v tion in such manner that the location of fastenings in successive Work pieces may be varied at the will of the operator without changing the angle at which the fastenings are driven into the work pieces.

It is an important feature of the invention that means is provided forlocking a work positioning 1 means in operative position after it has been moved into such position by manually operable means provided for that purpose. Through manual control of the work positioning means,

the work of the operator is faciliated in securing proper engagement of the work positioning means with a given work piece in presenting the latter for the insertion of a fastening. Furthermore, by locking the work positioning means in its oper- 'ative position, the latter becomes operative to locate the work piece in a predetermined relation to the fastening inserting mechanism.

Another important featured the invention resides in the provision of a flexible work position- 40 ing means which enables the operator tovary the location of successive fastenings in a succession of work pieces without tipping any work piece out of a iven plane common to all the work pieces presented .for the insertion of fastenings, this variation in the location of the fastenings being accomplished While the work positioning means maintains control of each work piece. Such a construction is particularly advantageous in operationswhich involve the driving of fastenings to secure .a succession of insoles to a given last since, if too many fastenings be driven in one location in the last bottom, an enlarged hole will be formed, ending in failure of the last to 5 hold the fastenings. By enabling theyoperator w ir to'vary the location of successive fastenings, the

usefulness of the last is prolonged.

In a preferred construction, two pivotal con- 'nections are provided between the Work positioning means and its operating member so that the former may be moved by pressure on the work piece to change the point of insertion of a fastening while the work positioning means maintains the same angular relationship to the work piece engaged thereby. It follows that all fastenings 10 are inserted at the same angle, preferably normal, to the surfaces of the Work pieces while they are under control of the work positioning means.

With the above and other'important objects and features in view, the invention will now be ,15 described with reference to the accompanying drawingsand'will thereafter be pointed out more particularly in the appended claims.

In the drawings, 'Fig. 1 is'a front elevation of a portion of the 20 head of the machine embodying the present invention, parts of the head, being broken away and in section;

I Fig. 2 is a side elevation of the machine on a smaller scale with parts broken away and'in'sec- 25 tion, the machine being shown operating on an insole and. last; I 1 Fig. 3 is an enlarged detail view of the operating instrumentalities illustrated in Fig. 2 with parts broken away and in section; and Fig. 4 is a view of the bottom of th the insole tacked thereon.

The invention is illustrated herein as embodied in a fastening inserting machine of the so last with type disclosed in Letters Patent of the United 35 States, No. 1,106,393, granted August 11, 1914, on an application filed in the name of Fred L. Mac- Kenzie, to which reference may be had for }a more complete description of themachine. The head of the machine is provided with a main driv- 4o ing shaft I0 carrying a pulley l2 and a plurality of cams for operating different mechanisms some of which will be referred to hereinafter. Atits 'for-' ward end the machine head is provided with a nozzle I4 which receives fastenings such as tacks and through which a driver 16 reciprocates to drive the tacks into the Work, the driver being carried by a driver bar l8' which is propelled downwardly to drive a tack by a torsionspring 20 (Fig.2). The driver bar 18. reciprocates' in a vertical guideway in the head of the machine audit is moved upwardly intov inoperative position by a cam 22 having a projection 23 thereon which engages a lug 24 formed on the driver bar.

.Forwardly of the driver bar LIB the machineis provided with a second vertical guideway 26 in which reciprocates another bar 28, the lower end of this bar projecting out of the guideway and being enlarged, as shown in Fig. 1. A vertical slot 30 is formed in the enlarged portion of the bar 28 to produce depending ears 32, 34. Straddling the ear 34 is a supporting member 36 which is pivotally secured to the ear by a horizontal pin 38, this pin also extending through the ear 32 and being provided with a head 10. A tension spring 42, connected at its lower end to the head 40 of the pin and at its upper'end tosa pin id mounted in the frame of the machine acts constantly to urge the bar 28 into its uppermost or inoperative position, this position being de'ter mined by shoulders 46 formed on the enlarged portion of the bar and arranged to contact with a surface 4-8 on the machine head.

The bar 26 is moved downwardly into .operative position against the action of the spring 42 by a lever50 pivoted on a stud52 mounted in the side of the machine and connected at 5a to a treadle rod 56. The lower end of the treadle rod is pivotally connected by a pin 58 to an arm 66 formed on a treadle 62, the treadle being pivoted on a shaft 66 located in the base of the machine. The forward end of the iever'60 is pivotally connected by a pin 66 to the lower end of a link'fiS having its upper end extending into the slot tit-and pivotally connected .to the bar 28 by the pin 38.

The lower portion of the supporting member 36 is bifurcated to form downwardly extending arms 70 which carry a horizontal pin '52. Pivoted on this pin between the arms 10 is a carrier member M provided with an upwardly extending projection or lug l6 and having at its lower side a horizontal plate-like portion '18 extending widthwise of the machine. Mounted in the plate 18 near its opposite ends are downwardly projecting pins 80 the lower portions of which are reduced in size and rounded, as shown in Figs.

1 and 3. The pins 80 serve as means for positioning an insole on the bottom of a last and for holding the insole and last in proper relation to each other while the fastening inserting instrumentalities of the machine drive a tack through the insole and into the last.

As shown in Figs. 2 to 4, inclusive, the insole and last, indicated in those figures by the numerals 82 and 84, areprovided respectively, at their foreparts and preferably'at points located about midway between the toe end and the break or ball line of a shoe, with openings or holes 86, 88, the holes in one member registering with thosein the other and corresponding in location and size to the positioning pins .88.

The positioning of two or more work pieces by pins similar to the pins 80 arranged to enter corresponding holes in the work pieces, is disclosed'in the Pympatent mentioned above and, accordingly, is not claimed herein, the present invention, as stated, being directed more par ticularly to improvements in mechanisms for operating and otherwise controlling the pins.

It will be seen from the foregoing that the pins 80 may be moved downwardly relatively to the tack nozzle l4 into a position in which the holes 86, 88 in theinsole and last can be engaged by the pins. As shown in Figs. 2'and 3, this position is preferably such that the toeportion of the insole 62 will contact'with the nozzle I4 when the surface of the insole is substantially horizontal. Moreover, by reason of the two pivots 38,

12, the pins may be moved toward or away from the nozzlewhile they are located in-the' holes and while they are maintained in a substantially vertical position, or in a position which is normal to the plane of the insole.

The pins may be tilted or tipped somewhat if necessary during operation and while still engaging the work, this tipping movement being limited by relatively fiat surfaces Q6, 92 (Figs. 1 and 3) formed at slight angles to each other on the lower sides of the arms '56 of the supporting member 36 and arranged to engage the upper surface of the plate '58 on the carrier member it and .thus limit the tipping movement of the pins. As illustrated in Fig. 3, the pins 36 have been moved inwardly toward the nozzle so that a tack .94, which. has been driven through the insole and into the last, has been located in a more rearward position in the last than it would have been located had the pivots 38 and H! been'more nearly in vertical alinement.

The supporting member 36 and the carrier member 14 are normally held in a position in which the centers of-the pivot pins 38 and i2 lie in a plane that is slightly inclined relatively to the vertical and, when not operating, thepins 86 are located in a substantially vertical position. This is accomplished by a spring 96 having one end located in a recess formed in the projection 16 on the carrier member '54 and having its other end seated in a similar recessformed in the lower end of a downwardly projecting arm 93 integral with the bar 28' and fixed relatively to the supporting member 36, the spring 96 urging the carrier member M in a clockwise direction, as viewed in Figs. 2 and 3, and urging the supporting member 36 in an opposite direction until ing substantially perpendicular to the plane of the insole. When the pins are withdrawn from the insole and last they snap back automatically to their initial vertical position under the action of the spring 96 if they have been tipped out of I such position by tipping of the last bottom out of the horizontal during the tacking operation.

As indicated above, it'is desirable to maintain thepins 80 positively in their lower or operative position when they are engaging the insole and last and while a tack is being driven. Accordingly, there is provided in the head of the machine, adjacent to the bar 128, a latch me pivoted on a pin I02 mounted in the frame of the machine and having a downwardly extending portion I04 arranged to engage a notch 1% formed in the bar 23, the shapes of the notch and latch being such that the bar will be locked against upward movement when the latch is engaging the notch. The latch has an upwardly extending arm carrying a roll me which extends rearwardly through an opening in the frame and is located in the path of the projection 23 on the cam 22, this projection having an inner curved surface H39 so shaped that, when the cam is rotated one revolution, this surface will engage the roll l08 during the latter part of the rotation and swing the latch in a counterclockwise direction, as viewed in Fig. 1, to withdraw the portion I04 of the'latch from the notch I06, thereby All . 2,186,046 unlocking the bar 28 and permittingthe' tension "in, -saidwork positioning means being movable spring .42 to return it automatically toits uppermost position determined bythe stop surfaces".

.The latch is, normally urged in a clockwise direction about the pivot I02 by a plunger IIO mounted in a boss I I2 formed on the head of the machine, this plunger being forced against the latch by a compression spring I III mounted in an opening in the plunger and retained in the boss by a cap. screw II 6.

As described in the Pym patent referred to,

the machine'is arranged to operate through one completecycle and then come to rest, each'cycle actuating the driver once to insert a fastening in the work. The machine is operated by a onerevolution clutch, indicated generally in Fig. 2'

by the reference numeral II 8, and the clutch is tripped by a starting treadle I20 pivoted at I22 in the base of the machine. Accordingly, in

tacking the insole 82 to the last 84, the operatorv first depresses the treadle 62 to lower the pins 80 into their operative position which acwardly or rearwardly as desired relatively to the nozzle I4 and thus locates the insole in what-' ever position he Wants the tack to be inserted in the last. I

The operator depresses the treadle I20 to start the machine, thereby initiating rotation of the driver cam 22 and descent of the driver to drive a tack. Continued rotation of the cam 22 in completing the cycle moves the latch I00 automatically out of the engagement with the bar 28 by reason of the curved surface I09, thereby permitting the tension spring 42. to return the bar and pins 80 to their inoperative position. It will be seen, therefore, that the positioning pins are locked against upward movement during the relativepositioning of the insole and-last and during the driving of the firsttackinto the toe end of the insole. After the tack has been driven, the latching means is automatically-released and the bar 28 and pins 80 are moved upwardly away from the last and insole and into their inoperative positions so that they will not interfere with the driving of other tacks required to secure the insole to the last bottom, these other tacks usually being located adjacent to the ball line and at the heel end of the insole and being indicated in Fig. 4 by the numerals I24, I26. During the driving of these remaining tacks the operator holds the rear portion of the insole by hand inproper position on the last bottom, the longitudinal and lateral positions of the foreparts having been fixed by the forward tack 94. When it is desired to position another insole on the last bottom the operator again depresses the treadle 62 to lower the positioning pins 80 into operative position where they become locked, as: described above.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A fastening inserting machine having mechanism for inserting in Work pieces a succession of fastenings, work positioning means arranged to engage a plurality of alined openings in each of a plurality of work pieces to hold said work pieces in predetermined relation to each other during the insertion of a fastening thereheightwise relatively to the fastening inserting mechanism from an inoperative to an operative position, means for positively maintaining said positioning meansin operative position after it hasbeen moved into. such position, and means ber toengage and hold .a work piece against displacement during insertion of a fastening therein, means for' positively maintaining said positioning means in operative position after it has been moved into such position, and means for returning said positioning means to its inoperative position in timed relation to the operation of said. fastening inserting mechanism.

3. A fastening inserting machine having mechanism for inserting asuccession of fastenings in a work piece, said mechanism comprising a driver bar reciprocable in the machine head, work positioning means comprising a bar reciprocable in the machine head'substantially in parallelism to the driver bar and having at one end members arranged. to engage and hold a work piece against'displacement both laterally and longitudinally of an axis thereof duringv the insertion of a fastening therein, a latch member for positively maintaining said positioning means in operative position after it has been moved into .such position, and means comprising a spring for returning said positioningmeans to its inoperative position in timed relation to a fastening inserting operation.

4. A. fasteninginserting machine having, in combination, mechanism for driving fastenings through a shoe part and into a last upon which the shoe'part i s'mounted,.means movable into operativeengagement with both the shoe part and the lastat a plurality of points for positioncombination, means movable. heightwise of the.

machine for positioning an insole on the bottom of a lash-mechanism for driving fastenings throughthe insole and into the last tohold the insole on the last bottom, manually operated means for moving the positioning means heightwise into operative position relatively to the driving mechanism, a latch for maintaining, said positioning meanspositively in said operative position until after a fastening is driven, and

means for automatically withdrawing said positioning means from operativeposition.

6. A fastening. inserting machine having, in

combination, means arranged toengage an insole inwardly of its edge face and position it on the bottom of a last, mechanism for driving fastenings through the insole and into the last ,to

-hold the insole in position on the last, means for moving the positioning means relatively to the driving mechanism to bring said positioning means from an inoperative into an operative position, means for automatically locking said posifor operating said driving mechanism, and means actuated by the operation of said driving mechanism for releasing said positioning meansand returning it to inoperative position. I

7. A fastening inserting machine having, in combination, means for positioning an insole on the bottom of a last, mechanism for driving fastenings through the insole and into the last to hold the insole in position on the last bottom, means for moving the positioning means heightwise relatively to the driving mechanism to locate the positioning means in operative position, spring means tending constantly to urge the positioning means into an inoperative position, a latch for locking said positioning means in operative position after it has been moved into said position, and means for automatically releasing said latch to permit the positioning means to be returned to inoperative position by said spring means.

8. A fastening inserting machine having, in combination, means arranged to engage an insole at a plurality of points inwardly of its periphery for positioning the insole on the bottom of a last, mechanism for driving fastenings through the insole and into the last to hold the insole on the last, means for moving the positioning means heightwise relatively to the driving mechanism to locate said positioning means in operative position, means for positively maintaining the positioning means in operative position while a fastening is being driven, means for operating said driving mechanism to drive a fastening, and power actuated means for removing the positioning means from operative position after the first fastening has been driven.

9. A fastening inserting machine having, in combination, means for positioning an insole on the bottom of a last, mechanism for'driving a fastening through the insole and into the last to hold the insole in position on the last, means for moving the positioning means in a rectilinear path heightwise of the driving mechanism to locate the positioning means in an operative position, separate means for holding said positioning means positively against heightwise movement away from said operative position, means for operating the driving mechanism to insert a fastening through the insole and into the last bottom, and means actuated by the operation of said driving mechanism for automatically returning .said positioning means to inoperative position after one fastening has been driven.

10. A fastening inserting machine having, in combination, means for positioning an insole on the bottom of a last, mechanism for driving a fastening through the insole and into the last to hold the insole in position on the last bottom, means for moving the positioning means relatively to the driving mechanism to locate the positioning means in operative position, a spring tending constantly to urge the positioning means away from operative position, a latch for automatically locking said positioning means in operative position after it has been moved into such position, and a cam for operating said driving mechanism, said cam operating also to release said latch after a fastening has been driven and thereby permit said spring to return the positioning means automatically to its inoperative position.

11. A fastening inserting machine having, in combination, a reciprocable driver bar carrying a driver, a second ,reciprocable, bar carrying members for positioning an'insole relatively to a last bottom, manually operated means for moving the second bar relatively to the driver bar to effect movement of the positioning members .into operative position, a latch for engaging the second bar and looking it in the position into which it is moved by said manually operated means, a tension spring constantly urging said second bar into its initial position, a torsion spring for propelling said driver bar to drive a fastening, a cam for returning said driver bar to its initial position, and means for rotating said cam one revolution, said cam having means thereon for automatically releasing the latch from engagement with the second bar as the cam returns insole and last and thereby to position the insole and last relatively to each other, fastening inserting instrumentalities, means for moving the positioning means relatively to said instrumentalities to locate said positioning means in operative position, and means for automatically maintaining said means positively in operative position while a fastenng is being inserted.

13. A fastening inserting machine having, in combination, a member for position an insole relatively to a last bottom, said member carrying a plurality of pins spaced from each other and arranged to enter correspondingly spaced holes formed in the insole and last and thereby position the insole on the last bottom, mechanism for driving fastenings into the insole and last, means for moving the pin member relatively to said driving mechanism to locate said member in operative position, a latch for automatically retaining the pin member positively in operative position, a spring constantly urging said pin member away from said operative position, means for operating the driving mechanism, and means actuated by the operation of said operating means for releasing said latch and permitting said spring to withdraw the pin member from operative position.

14. A fastening, inserting machine having, in combination, a head provided with fastening inserting instrumentalities, means for positioning a plurality of work pieces relatively to each other to have fastenings inserted to hold them together, said means being arranged when operating to have a predetermined angular relation to the work pieces, a carrier member for said positioning means, means to lock the work positioning means against movement in a vertical direction, and connections between the carrier member and the machine head whereby the positioning means and work pieces may be moved laterally relatively to the fastening inserting instrumentalities to vary the position of the fastenings inserted in different work pieces without changing the angular relation of the positioning means to said work pieces.

15. A fastening inserting machine having mechanism comprising a fastening driver for inserting a succession of fastenings in a work piece, work positioning means arranged to engage a work piece during insertion of a fastening therein, said work positioning means being movable erally of the fastening inserting mechanism with-' in the direction of the length of the fastening driver between operative and inoperative positions and. being held unyieldingly in operative position, and means for supporting thework positioning means for yielding movement in a direction laterally of the fastening driver without changing its angular relationship to the driver, whereby successive fastenings are driven normal to the surfaces of successive work pieces.

16. A fastening inserting machine having, in combination, a member provided with pins arranged to fit into corresponding holes in a plurality of work pieces and to position said work pieces relatively to each other, said pins having a fixed angular relation to the work pieces when fitted into said holes, fastening inserting instrumentalities fixed against lateral movement, and means for permitting said pins to move laterally of said fastening inserting instrumentalities without changing their angular relation to the work pieces, thereby permitting the relative positions of said instrumentalities and successive groups of work pieces to be changed so that the position 'of a fastening driven into each group may be varied.

17. A fastening inserting machine having, in combination, fastening inserting mechanism fixed laterally of the machine, means for positioning an insole and a last relatively to each other to receive a fastening tobe driven through the insole and into the last, means for moving and guiding the positioning means on the machine head, said positioning means comprising a plurality of pins arranged to fit into corresponding holes formed in the insole and last and means for carrying the pins, said carrying means comprising a lower member and pivotal connections between said member and said moving and guiding means whereby the pins may be moved laterally of the fastening inserting mechanism without changing their angular positions in said holes.

18. A fastening inserting machine having, in combination, fastening inserting mechanism comprising a driver bar reciprocable in the machine head, a second bar reciprocable in the machine head substantially in parallelism to the driver bar and having a member to engage and position a substantially rigid work piece for the insertion of fastenings therein, said member being arranged when in operation to have a definite angular relation to a surface of said work piece, and two spaced connections between the second bar and the positioning member carried thereby for permitting the latter to be moved latout changing the angular relation of said positioning member to the surface on the work piece, whereby said work piece may bevariously positioned relatively to the fastening inserting mechanism so that fastenings may be inserted in different locations in successive work pieces without tipping any of the work pieces out of a substantially horizontal plane during, the insertion of the fastenings,

19. A fastening inserting machine having, in combination, fastening inserting mechanism, means for positioning an insole and a last relatively to each other to receive a fastening to be driven through the insole and into the last, said positioning means comprising pins arranged to engage corresponding holes formed in the insole and last bottom and a member carrying said pins, means for moving and guiding the carrying member on the machine head, pivotal connections between said carrying member and said moving and guiding means whereby said pins may be moved laterally of the fastening inserting mechanism without changing their angular relation to the insole and last, and means forreturning driven through the insole and into the last, said means comprising a plurality of pins arranged to fit into corresponding'holes formed in the insole and last substantially at right angles to the plane of the insole, a carrier member for said pins, said carrier member being mounted for pivotal movement toward and away from the fastening inserting mechanism, means'for supporting said carrier. member, said supporting means being likewise arranged for pivotal movement toward and away from the fastening inserting mechanism and operating in conjunction with said carrier member to permit said, pins to be moved toward and from said mechanism while still located in the holes in the insole and last without binding or tending to tip the insole out of its original plane, and means for automatically returning the carrier member and the supporting means to their initial positions after the pins have been withdrawn from the insole and last.

AIITGUST R. SCHOENKY.

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