US2130193A - Shoe machine - Google Patents

Description

Sept. 13, 1938. WI P, OSGQQD 2,130,193

SHOE MACHINE Filed MayI 24, 1957 4 Sheds-Sheet l Sept. 13, 1938. w. P. osGooD 2,l30,193

SHOE MACHINE y Filed May 24, 1957 4 Sheets-Sheet 2 gunman Sept. 13, 1938.

W. F. OSGCO D SHOE MACHINE Filed May 24, 1957 4 Sheets-Sheet 4 Patented Sept. 13, 1938 UNITED STATES PATENT 'OFFICE 14 Claims.

The present invention relates to machines which are used in the manufacture of shoes to apply pressure progressively to a seam ridge formed in joining a plurality of sheets or upper blanks, such as a pair of quarters, by a seam. This operation is known in the shoe industry as the seam pressing operation, the purpose of which is to press the upstanding seam ridge beyond its elastic limit to set it in a permanently deformed condition in a single plane thus to render the seam ridge innocuous to the strains to which it is subjected during the various shoemaking operations and to provide for a straight, good-looking seam crease in the finished shoe. In some cases the application of progressive pressure is accompanied by the application of tape to the seam ridge and to the inside faces of the quarters at opposite sides thereof. It must be understood, however, that with respect to tape-severing certain features of the present invention are useful when embodied in machines for applying tape to a single sheet or upper blank as well as in machines for applying tape to and adjacent a seam ridge.

The work is presented to a seam pressing machine for the seam-pressing operation in a turned inside-out condition thus to develop an upstanding seam ridge. For a long time it has been highly desirable in the shoe industry that the machine, during the seam-pressing operation, turn the quarters right side out. It has been proposed heretofore to obtain this desirable result by providing the work-supporting roll with a peripheral groove as disclosed by me in my Patent No. 19,319, reissued September 18, 1934. Experience has demonstrated that with a worksupporting roll having a peripheral groove, the work is reversed only if the operative uses her hand as a guide to control the shape of the work as it leaves the seam pressing machine.

The principal object of the present invention is to produce a seam-pressing machine which will perform the seam-pressing operation in a satisfactory manner and deliver positively the finished work in a right side-out condition.

Further objects of the present invention are tosimplify and improve the Work support and the mechanism for simultaneously operating the tape guide and actuating the tape-severing knif to sever the tape. Y

To the accomplishment of these objects the various features of the present invention reside in certain devices, combinations and arrangements of parts hereinafter described and then pointed out in detail in the appended claims,

possessing advantages readily apparent to those skilled in the art.

Figure 1 is a View, partly in section, in left side elevation;

Fig. 2 is a View, partly in section, supporting structure;

Fig. 3 is a detail View in front sectional elevation of the rst work-supporting roll;

Fig. 4 is a, detail view in front sectional elevation of the second work-supporting roll;

Fig. 5 is a View in front sectional elevation, parts of the frame being broken away for convenience;

Fig. 6 is a detail view in front sectional elevation of the presser foot supporting structure;

Fig. 7 is an enlarged detail View in left side elevation;

Fig. 8 is a View in sectional plan on the line 8 8, Fig. 7; l

Fig. 9 is a detail View in right side elevation of the tape-severing knife cam and the button for engaging it at the will of the operative;

Fig. 10 is a detail View in plan of a modified form of work support;

Fig. 11 is a detail view in left side elevation of the work support illustrated in Fig. 10;

Fig. 12 is a detail view in right side elevation, partly in section;

Fig. 13 is a View in sectional plan on the line lli-I3, Fig. 1;

Fig. 14 is a View in sectional plan on the line l-M, Fig. 2, and

Fig. l5 is a detail View in plan of the work support illustrated in Figs. 1, 2, 3 and 4.

The work is supported for the combined tapeapplying and seam-pressing operation by two rolls l5 and i1, (Fig. 1), arranged in line in the direction of feed indicated by the arrow therein, the roll I6 rst engaging the leading edge of the work and the roll I 1 last engaging the trailingl edge of the work.

The roll I8, (Fig. 3), comprises a metal shell I8, the work-engaging periphery of which is provided with a central fiat land i9 flanked by beveled lands and 2l. The shell I8 is provided with flanges 22 which embrace the side faces of a rubber ring 23 upon which the shell I8 is mounted. The ring 23 is mounted upon a sleeve 24, the opposite ends of which engage the inside faces of the arms of a yoke secured to the upper end of a spindle-26, (Fig. 2). The sleeve 24 is mounted to rotate freely upon a stud 2l secured to the arms of the yoke 25 and bridging the space between them.

The roll I1 comprises a rubber ring 28, (Fig..

of the Work- :Y

Cil

4), mounted in a channel 29 formed vin the periphery of a metal ring 30 rotatably mounted upon a stud 3| secured to the arms of the yoke 25.

The spindle 26, (Fig. 2), is mounted to slide vertically but held from rotation in a post 32. To this end the spindle 26 is provided with a narrow key 35 which rides in an elongated slot 36 Yformed in the post 32. The bottom of the spindle 26 is threaded to receive the threaded upper end of a rod 31, the lower end of. which supports a closed link 38 to which a treadle-connected rod 39 is hooked.

Near its lower end the rod 31 is threaded to receive a nut 40 provided with a circular series of openings 4|, (Figs. 2 and 14), one of which is adapted to receive loosely a pin 42 carried by the lower end of a sleeve 43. The upper end of the sleeve 43 through which the rod 31 passes loosely is threaded into the lower end of the post 32. As shown in Fig. 2 the central portion of the bottom of the sleeve 43 is provided with a cylindrical seat 44 in whichthe central portion of the top of the nut 40 is seated, there being a washer 45 interposed between the nut 40 and the sleeve 43. The nut 40 and sleeve 43 are held in contact and the work-supporting rolls I6 and |1 are projected yieldingly from the upper portion of the post 32 by a spring 46 housed in the lower end of the post, coiled about the rod 31 and interposed between the bottom of the spindle 26 and the top of the sleeve 43.

With this construction the work support may be lowered against the tension of the spring 46 by depression of the treadle-connected rod 39. During this movement the nut 40 is separated from the sleeve 43 but the amount of separation is not sufficient to cause the opening 4|, which receives the pin 42 to clear it. When the treadleconnected rod 39 is released the spring 46 restores the work-supporting rolls and the nut 48 to their normal operating positions.

The lower portion of the rod 31 is threaded into the nut 40. These threads have the same pitch as the threads by means of which the sleeve 43 is threaded into the post 32. With this construction rotation of the nut 40 and sleeve 43 as a unit results in the variation of the tension of the spring 46 without, however, varying the operating position of the work-supporting rolls.

To vary the operating height of the work-supporting rolls without variation in the tension of the spring 46 the pin 42 is Withdrawn from the nut 40, which is then rotated on the sleeve 43 in the desired direction and to the desired extent, the pin 42 being then replaced in the sleeve 43 and inserted in one of the other openings 4| in the nut 40.

Broadly considered the post 32 may be rigidly supported from the frame of the machine when the work-supporting rolls are embodied in a toptaping machine or in a back-seam machine in which the quarters operated upon are not tted in a closed upper. In order, however, that after each successive operation on the back seams of uppers each closed in a ring-like form, the operative may allow the upper, respectively, to drop down over the post 32 and accumulate in a stack thereon, therpost 32 is pivoted so that it may be swung from the full line position of Fig. 1 to the construction line position and thusfacilitate the removal of the stack.

The stack of closed uppers to be operated upon may be placed over the lpostr32 while in the construction line position of Fig. l and the uppers withdrawn therefrom, one at a time, while the Work-supporting rolls are in the full line position of Fig. lin which case the hammer to be described will feed the upper so withdrawn out of the machine.

Th'e post 32, near its base, is provided with an arm 41, (Fig. 13), having lateral bosses 48 thereon, the end face of each of which is centrally recessed to receive the conical ends of screws 49 carried by a dome 50, on the machine frame, both the dome and the frame having openings 5| through which the post 32 works.

The post 32 is held in the full line position of Fig. 1 by a latch 52 having a beveled face 53 which engages a similar face 54 formed on the bottom of an ear 55 on the post 32. The post 32 is prevented from excessive movement to the left, (Fig. 1) by a pair of stop screws 56 carried by the dome 50 and arranged, respectively, to engage projections 51 on the post 32.

The latch 52 is slidably mounted in a guideway 58 formed in an extension 53 of the dome 50. The latch 52 is connected to one end of a rod 60, the other end of which is provided with a handle 6| by means of which the latch 52 may be withdrawn from the ear to permit the post 32 to fall into the construction line position of Fig, 1 under the inuence of gravity. A second rod 62 connected to the handle 6| is received within an opening 63 formed in the extension 59- to prevent rotation of the latch'.

When the handle 6| is released the latch 52 is projected into the position of Fig. 1 by a spring 64 housed in the extension 59 coiled about the rod and interposed between the latch 52 and the closed end of the guideway 58. When the operative pushes the post 32 from the construction line position of Fig. 1 to the full line position thereof the latch 52 is wedged into the guideway 58 against the tension of the spring 64 by a cam surface 65 formed on the ear 55.

Associated with the work-supporting rolls is a seam-crease guide 66, (Fig. 1). The seam ridge is guided by a guide 61 having a construction and mode of operation substantially like the leather seam-ridge guide disclosed in my Patent No. 1,850,120, March 22, 1932. The guide 61 is connected detachably to a bracket 68, (Figs. l, 5 and 7). The bracket 68 is secured to a block 69 which is supported from a bracket 10 secured to the machine frame.

After the work has been placed in position on the work-supporting rolls with the seam-crease and the seam-ridge engaged by their respective guides, the tape is applied to the work by a seampressing hammer 1|, (Fig. 7), carried by a lever or head 12. The head 12 is formed with a slot 13, (Figs. l and '7) in which is received slidably a block 14 that is pivoted at 15 to the machine frame. The upper end of the lever 12 is connected toan eccentric (not shown) on the drive shaft 16, (Fig. 1) As disclosed more fully in my Patent No. 1,646,212, this construction reciprocates the hammer 1|, to press the seam-ridge progressively and apply tape thereto, and oscillates the hammer 1| in contact with the work, to impart thereto a feeding movement. During this feeding movement the hammer 1| draws tape through a tape guide 11, (Figs. 1 and 7), from a suitable source of supply extending in the machine from a coil, (not shown), to the tape guide. Intermediate the coil vand the tape guide the machine is provided with a tape pull-ofi mechanism having substantially the same construction and mode of operation as the corresponding pull-off disclosed in my Patent No. 1,899,051, February 28, 1933.

The tape guide 1-1 and its associated tape-stripper plate 18 have a construction and mode of loperation with respect to tape-guiding and tapestripping substantially like the corresponding parts disclosed in my Patent No. 2,026,911, January '1, 1936. The tape guide 11 is supported from one end of a rock shaft 19 journalled in the block 69. The other end of the rock shaft 19 is provided with an arm 88, the free end of which is connected by a link 8| to the lower end of an arm 82 depending from a rock shaft 83 journalled in the machine frame. The rock shaft 83 is provided with a second arm 84, the free end of which is pivoted to the upper end of a treadle-connected rod 85, a spring, (not shown), being connected thereto in the usual manner to return the parts to normal position after the depressed treadle has been released by the operative.

The normal position of the tape guide is illustrated in Fig. '1. In this position the tape guide cooperates with the hammer 1| below the path of operation of the tape-severing lmife 86. The tape-severing knife 86 comprises a plate 81, (Fig. 8), provided with a salient cutting edge 88. The plate 81 is secured to a holder 89, (Fig. '1) projecting laterally from one end of an arm 98, the other end of which is secured to one end of a rock shaft 9| journalled in the block 69. The other end of the rock shaft 9| is provided with a cam plate 92 which may be engaged by a button 93 rotatably mounted on one end of a horizontal rod 94 slidablyr mounted in a sleeve 948 threaded into the reciprocating and oscillating head 12. The button 93 is maintained normally at one side of the vertical plane of the cam plate 92 by a spring 95, coiled about the rod 94 and interposed between the button 93 and the adjacent end of the sleeve 948. rihe spring 95 moves the button 93 and the rod 94 to the right, viewing Fig. 5,l until stopped by the nut 96 on the opposite end of the rod. The button 93 is pressed to the left, viewing Fig. 5, against the tension of the spring 95 by a cam block 91 adjustably secured tothe link 8 I. The tape-severing knife is maintained normally in the position of Fig. 1 by a coiled spring 98, one end of which is connected to the block 69 and the other end of which is connected to the arm 98. Movement of the tape-severing knife in the other direction is limited by a pin 99 projecting from the block 89.

Thus, through the connections described the tape-severing knife is maintained normally in an inoperative position and the tape guide 11 is maintained normally in a position below the path of operation of the tape-severing knife, in which position the tape guide cooperates with the hammer 1|.

When the treadle-connected rod 85 is depressed by the operative the tape guide 11 is swung upwardly to a position above the path of operation of the tape-severing knife, in which position the tape guide cooperates with the knife, and the button 93 is forced by the cam block 91 into the vertical plane of the cam plate 92 so that the tapesevering knife is operated to sever the tape by the same power driven mechanism which reciprocates and oscillates the seam-pressing and tape-applying hammer 1|. The tape-severing knife is operated tosever the tape on one of the downward movements of the head 12. The tape-severing knife is retracted after its tape-severing movement by the coiled spring 98, a forwardly projecting ledge |88 on the block 89 limiting the movement of the arm 98 under the influence of the spring 98. The cam block 91 is mounted adjustably upon the link 8| to facilitate providing for the time of operation of the tape-severing knife relative to the time of operation of the tape guide from its position below the path of operation of the tape-severing knife to its position above that path, the desideratum being to cause the knife in its tape-severing stroke to clear the bottom of the tape guide during its upward swinging movement and to provide the tape with a dangling cut end so that the tape presenter 18 may pick it up and pull the tape into the line of feed when the tape guide is restored to its normal operating position.

The operative inserts the workin the machine being careful to engage the seam crease with the seam crease guide 66 and the seam ridge with the seam ridge guide 61, the work being turned inside out to develop the upstanding seam ridge. The operative then feeds the work inthe direction of the arrow, (Figs. 1 and '1), to bring the leading edge of the work into the zone of activity of the hammer 1| thereby picking up the leading edge of the freshly cut tape and interposing it between the hammer 1| and the top of the seam ridge.

The toe |82 of the hammer 1| cooperates with the downgoing side of the roll I6 to apply the tape to the seam ridge and to perform thereupon that operation known in the shoe industry as the seampressing operation. The heel |83 of the hammer 1| cooperates with the upgoing side of the roll I1 to apply the tape to the face of the quarters at opposite sides of the taped and pressed seam ridge. During this operation the surface 28 on the roll |1 yields to permit the taped and pressed seam ridge to pass between the heel 83 and the roll |1 without injury. 4

The toe |82 of the hammer 1| feeds the leading edge of the work progressively down the downgoing side of the roll I6 until the leading edge engages a bite guard |84, (Fig. '1), which prevents the leading edge of the work from passing down between the rolls and |1 and deflects the leading edge of the work upwardly into engagement with the upgoing side of the roll |1. During the time the work is bridged across the rolls I6 and |1, the work is acted upon by the shank |85 of the hammer 1| which imparts to the seam ridge face of the work a concave curvature both along the length of the seam ridge and across the quarters laterally thereof. Thus, the hammer 1| in cooperation with the rolls 6 and |1 applies tape to the u seam ridge, presses the taped seam ridge, applies tape to the faces of the quarters at opposite sides of the taped and pressed seam ridge, imparts a shape to the quarters which they assume when assembled upon the heel end of a last, and irons the seam crease side of the quarters to impart a finished appearance thereto free from the undesirable crows-feet.

In order to-aid the hammer 1| in concaving the seam ridge face of the work and to insure the setting of the quarters in the position they assume when assembled upon the heel end of a last, the opposite sides of the arms of the yoke are provided, respectively, with wings |86 and |81 which engage the finished faces. of the quarters and support them while the hammer 1| operates upon the unsupported seam ridge portion of the work.

Each wing is provided with a shank |88, (Fig. 1), secured by screws: to an arm of the yoke 25, a fiaring quarter-engaging edge |89, (Fig. 15), and an undercut portion 8, which permits that portion of the flaring edge |89 first to be engaged by the quarter to be located over the top of the arm of the yoke 25 close to the side of the roll I6.

As indicated in Fig. 5 the quarter-engaging edges of the wings |06 and |01 liare outwardly for most of their lengths, the edges flaring inwardly adjacent ltheir rear ends. For some classes of work it may be desirable to provide the reversing wings with quarter-engaging edges and H2 which iiare outwardly for a portion of their lengths, are inwardly for another portion and flare outwardly again adjacent their rear ends.

During the action of the hammer 1| upon that portion of the work which extends unsupported between the rolls I6 and |1 and between the reversing wings |06 and |01, the taped and pressed seam ridge is engaged by a presserV foot ||3, (Fig. '1), in order to resist the tendency of the work to spring upwardly during the idle stroke of the hammer. The presser foot ||3 is formed upon the lower end of a lever ||4 which works in a slot ||5, (Fig. 6), formed through the central portion of the hammer, and which is pivoted upon a pin ||6 secured to a presser foot support 'Ihe upper end of the support ||1 is provided with a post ||8 which is secured to a carrier ||9 having a rod |20, (Fig. 6), which passes through the slot 13 in the hammer head 12 in position to be secured to the frame of the machine as by a nut and washer fastening |2|.

The pin IIB, upon which the presser foot lever ||4 is pivoted, is provided with an arm |22 having a hooked end |23 which hooks over the shank of a screw |24, the head of which clamps the arm |22 tothe support ||1.

The presser foot ||3 is urged into engagement with the taped and pressed seam ridge by a coiled spring |25, one end of which is hooked through an eye |26 formed in the lever ||4 and the other end of which is hooked over a pin |21 projecting forward from the carrier ||9.

Nothing herein explained is to be interpreted as limiting the various features of the present invention in the scope of its application to use in connection with the particular machine or the particular mode of operation or any combination thereof selected for purposes of illustration and explanation. While the particulars of construction herein set forth are well suited to one mechanical form of the invention and to the uses to which it is put, it is not limited as to these uses, nor to these details of construction, nor to the conjoint use of all its features, nor is it to be understood that these particulars are essential since they may be modified within the skill of the artisan without departing from the true scope of the actual invention, characterizing features of which are set forth in the following claims by the intentional use of generic terms and expressions inclusive of various modiiications.

What is claimed as new is:

l. A seam-pressing machine having, in combination, means for supporting the work comprising a pair of spaced apart rolls,'a bite guard interposed therebetween, means constructed and 'arranged to bridge the space between the rolls over the bite guard and bend the flesh or unfinished face of the -work about an axis extending substantially normal to the line of feed, Vand a seam ridge presser foot.

2. A seam-pressing machine having, in combination, means for supporting the work cornprising a pair of spaced apart rolls, means con-V structed and arranged to bridge the space between the rolls and bend the iiesh or unfinished face of the work about an axis extending substantially normal to the line of feed, and means Iianking the rolls for supporting portions of the work unsupported thereby.

3. A seam-pressing machine having, in combination, means for supporting the work comprising a pair of spaced apart rolls, means constructed and arranged to bridge the space between the rolls and bend the flesh or unfinished face of the work about an axis extending sub-k stantially normal to the line of feed, means iianking the rolls for supporting portions of the work unsupported thereby, and a seam ridge presser foot.

4. A seam-pressing machine having, in combination, means for supporting the work comprising a pair of spaced apart rolls, and a combined tape-applying and seam-pressing means constructed, arranged and operated to cooperate first with one of the rolls only to press the seam ridge, apply tape thereto and feed the work, then with both rolls to bend the work about an axis extending substantially normal to the line of feed, and finally with the other one of the rolls only to apply tape to the work at opposite sides of the taped and pressed seam ridge and to feed the Work out of the machine.

5. A machine for applying pressure progressively along a'work piece having, in combination, a work support, means cooperating therewith to press a work piece inserted therebetween, a spring for moving the work support in one direction, a treadle-controlled means for moving the work support in the other direction, means for varying the tension of the spring without varying the relation of the work support to the pressing means and means for varying the relationv of the work support tothe pressing means.

6. A machine for applying pressure progressively along a work piece having, in combination, a work support, means cooperating therewith to press a work piece inserted therebetween, a spindle upon which the work support is mounted, a pivoted post in which the spindle is movable vertically, a sleeve threaded into the post, a nut engaged with the sleeve, a treadle-connected rod threaded into the nut and connected to the spindle, a spring housed in the post coiled about the rod and interposed between the spindle and the sleeve, and a connection between the sleeve and the nut permitting a relative movement therebetween.

'1. A machine for applying pressure progressively along a work piece having, in combination, a spindle upon which the work support is mounted, a pivotal post in which the spindle is movable vertically, a sleeve threaded into the post, a nut engaged with the sleeve, a treadle-connected rod.

threaded into the nut and connected to thespindle, a spring housed in the post coiled about the rod and interposed between the spindle and the sleeve, and a connection between the sleeve and the nut permitting a relative movement therebetween either of separation or rotation.

8. A machine for applying pressure progres-- sively along a Work piece having, in combination, a work support, means cooperating therewith to press a work piece inserted therebetween, a spindle upon which the work support is mounted, a pivoted post, a key and slot connection between the spindle and the post, a sleeve threaded into the post, a nut, having a series of openings, engaged with the sleeve, a treadle-connected rod threaded into the nut and connected to the spindle, a spring housed in the post coiled about the rod and interposed between the spindle and the sleeve, and a pin carried loosely by the sleeve adapted to engage loosely the selected one in the series of nut openings.

9. A machine for applying pressure progressively along a work piece having, in combination, a work support, means cooperating therewith to press a work piece inserted therebetween, a treadle-connected spindle upon which the Work support is mounted, and a post, pivoted about a horizontal axis, within which the spindle is movable longitudinally.

10. A machine for applying pressure progressively along a Work piece having, in combination, a work support, means cooperating therewith to press a work piece inserted therebetween, a treadle-connected spindle upon which the work support is mounted, a pivoted post within which the spindle is movable longitudinally, and means for latching the post from movement under the inuence of gravity.

11. A machine for applying pressure progressively along a work piece having, in combination, a work support, means cooperating therewith to press a work piece inserted therebetween, a treadle-connected spindle upon which the work support is mounted, a pivoted post within which the spindle is movable longitudinally, means for latching the post from movement under the influence of gravity, comprising a latch and an ear on the post, a spring for inserting the latch beneath the ear, a cam surface on the ear for operating the latch against the tension of the spring, and manual means for withdrawing the latch from beneath the ear.

12. A tape-applying machine having, in combination, tape-applying means, power-operated mechanism for operating the tape-applying means including a button, a tape-severing device, a rock shaft upon which the tape-severing device is mounted having a cam normally operatively disconnected from the button, a tape guide normally occupying a position below the path of operation of the tape-severing device, and means for operatively connecting the button-and the cam and for locating the tape guide above the path of operation of the tape-severing device comprising an arm connected to the vtape guide rock shaft, a treadle-connected arm and a link connecting the arms having a cam arranged to engage the button.

13. A tape-applying machine having, in combination, tape-applying means, power-operated mechanism for operating the tape-applying means, including a button, a tape-severing device, a rock shaft upon which the tape-severing device is mounted, having a cam normally operatively disconnected from the button, a tape guide normally occupying a position below the path of operation of the tape-severing device, and means for operatively connecting the button and the cam and for locating the tape guide above the path of operation of the tape-severing device comprising an arm connected to the tape guide rock shaft, a treadle-connected arm and a link connecting the arms, said link having a cam adjustably mounted thereon and arranged to engage the button.

14. A machine for applying pressure progressively along a Work piece having, in combination, a work support, means co-operating therewith to press a work piece inserted therebetween, a spindle upon which the work support is mounted, a post in which the spindle is movable vertically, a sleeve threaded into the post, a nut engaged with the sleeve, a treadle-connected rod threaded into the nut and connected to the spindle and a spring housed in.l the post, coiled about the rod and interposed between the spindle and the sleeve, the threads on the sleeve and the rod having the same pitch.

WALTER P. OSGOOD.

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