US2428365A - Machine for operating on the soles of shoes - Google Patents

Description

Oct. 7, 1947. J. P. FREDERICKSEN ,3

' MACHINE FOR OPERATING ON THE SOLES OF SHOES Filed Oct. 3, 1945 arlLi Patented Oct. 7, 1947 MACHINE FOR OPERATING ON THE SOLES OF SHOES v James P. Fredericksen Braintree, Mass., assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application October 3, 1945, Serial No. 620,047

Claims.

My invention relates various operations may be performed on the soles of shoes, such as rounding to their approximate peripheral contour or the formation of channels to receive the stitching for their attachment. It is especially applicablev to the well-known Goodyear Universal rounding and channeling machine, model E, which is, in most respects, as disclosed in Letters Patent of the United States No. 1,030,- 606, Perry, June 25, 1912.

In a machine of the character of that above indicated, means is provided'for varying the path along which the rounding, channeling or other tools act upon a sole having preliminary attachment to a shoe-bottom. A guide engages the crease between the upper and the welt along the shank of the shoe, and a second guide engages the shoe-upper along the forepart. The change from crease-guide to forepart-guide is efiected by movement of the latter, and the present invention fully overcomes a difliculty encountered when operating at the inside of'the right shoe and when the projecting edge ofthe sole being rounded is to be narrower at the forepart than at theshank. Under these conditions, there is a tendency, as the forepart-guide is lowered in approaching the ball-line, for the crease-guide to rise prematurely before the forepart-guide is in control of the work. An unduly narrow shank-edge will result, so the outsole-stitcher may run off the welt or the inseam may be cutin the trimming of the edge. This trouble has been recognized and partially corrected by mechanismdisclosed in Letters Patent of the United States No. 1,331,789, Smith, February 24, 1920. Here, a member is interposed between contact-abutments upon the forepartguide-lever and crease-guide-lever to hold the crease-guide temporarily down. The member is gradually retracted as the forepart-guide is lowered for engagement with the shoe-upper, until, as said guide approaches its final position, the member reaches a point at which it so leaves the abutments that the crease-guide is abruptly lifted by its spring, giving the forepart-guide control. This arrangement has a substantial effect in delaying the rise of the crease-guide, but it is a frequent practice of operators of the machine to depress the treadle, through which the forepartguide is lowered, considerably before the ball-line is reached. During the advance of the work from that point, the member cannot hold down the crease-guide for a suflicient time and an unduly narrowed shank-edge results. The difficulty is increased, because the distance of the forepartguide from'the fulcrum of its supporting lever is to machines by which 2 much less than that of the crease-guide from its lever-fulcrum. Consequently, the rate of movement of the forepart-guide is rapid as compared with that of the crease-guide, tending, if the forepart-guide is lowered prematurely, to hasten improper narrowing of the shank-edge. It .is further to be noted, that, in the patented mechanism, in which the position-controlling member interposed between the guide-levers receives its movement through direct connection to the forepart-lever, said position-controlling member is swung upwardly as well as outwardly from between the abutments. This tilting of the member forces the crease-guide down before it has an opportunity to rise, so there is at once some narrowing of the shank-edge. The effect of all these factors is to prevent any definite relation between the arrival of the forepart-guide in its work-engaging position and the release of said work by the crease-guide, and to render it extremely difiicult for the operator to initiate the change in the sole-edge in the correct relation to the ball-line;

It is an object of the present invention to exercise.

such control over the crease-guide that it can have no movement away from the work until the forepart-guide is in the desired work-positioning relation.

In the attainment of the above object, I combine with a forepart-guide and a crease-guide movable as above indicated, means for securingthe crease-guide against movement from its work-engaging position until the forepart-guide has fully reached such position and means for thereafter moving the securing means to release the creaseguide. By thus fixing the crease-guide during the descent of the forepart-guide, the transfer of control from the former guide to the latter can be made quite accurately at the desired time, and in the correct relation to the ball-line. The means by which the crease-guide is thus secured is here shown as including a member, preferably in the form of a slide, movable independently of the forepart-guide and preferably also movable with said guide. As is desirable, the time of control of the crease-guide by the member is made vari able. The securing member extends between contact-portions or abutments upon the levers which carry the guides and may be retained against movement by such a device as a latch, which, being independent of the guides, is not directly affected by their movement. It is, however, re.- leased by means controlled with the forepartguide and is then retracted to free the creaseguide for movement from the work.

In the accompanying drawing,

Figs. 1 and 2 illustrate, in a fragmentary manner, in side elevation, the elements of a rounding and channeling machine more directly involved in the present invention, and respectively showing the crease-guide and the forepart-guide in their active positions.

Mounted upon a frame I is a reciprccatory rounding knife l2 operating against an oscillatory feed-point carried by a feed-arm I4. Cooperating with the feed-point to advance the work to receive the action of the knife is a bottom-rest l 6, this rest being engaged by the treadsurface of a shoe-sole bein operated upon, the feed-point contacting with theupper face of the welt. Fulcrumed upon the frame about an axis indicated at I8 is a lever, the supporting yoke'of' which appears at 20. On the outwardly projecting arm 22 of the lever is carried the forepart guide 24, the end-surface 26 of which is adapted to receive contact of the upper of a shoe being operated upon just above the crease between said upper and a preliminaril attached sole, and thereby determine the relation of the sole-edge to the knife l2. The'degree of extension of the guide below the lever-arm, and therefore the width of the sole-edge when the guide is in its active position, is determined by adjusting mech-' anism 28. A'spring 30 j'oinlng an arm 32 of the lever 20 tothe frame holds the arm 22 normally raisedag'ainst a stop-surface 34 upon the frame. The depression of the lever'to carry the guide to its active work-engaging position is produced through a link 38 connectingtheyoke to one arm of a bell-crank-leve'r 40, to a second arm of which is joined a rod '42. leading to an unillustrated treadle. When lowered, the uide '24is controlled by cam'mechanism 44' whichdoes not enter directly into this invention. In the movement of the guide 24, it. rests yieldably against the outer faceiof the feed-arm -i4, Fulcrumed at 46 upon the frame is a .lever 48, to the outer. extremity of which is'secured a guide 50 in the form of a loop, between the arms ofwhich the feed-point operates. The lower edge 52.of the loop is adapted to'enter the crease betweenthesole and the shoeupper. The lever 48 has a curved abutment-surface 54, which is shown as furnished by the upper edge of: a plate 56.. attached to the lever by a slot-and-screw connection 58. The abutmentsurface 54 is drawn'by. atensicn-spring '60, joining the lever. 48 to the frame,'yieldably toward an abutment-roll fi2irotatable'upon a bracket 64 secured. to the lever 20, there: being. interposed between. the abutments a slide or controlling member 65;"to bedescribed later. By this engagement, the work controlling position of the guide 50. is determined,:and. this maybe altered by adjustment. of the plate 56through its connection-58. The axis of the roll62 preferably coincides with. the axis N3 of the fulcrum of the lever 20, so, as the lever oscillates, the roll-has nomovement of'tran'slation. As the guide 24 is lowered throughthe action'of the treadle-rod 42,

the guide l'l:first remains at rest until'a screw width at the forepart, this shall take place substantially at the ball-line, and that thenormal width at the shank shall not be narrowed. My invention accomplishes this in" the following manner. The opposite-surfacesofthe end lfl ofthe abutments. It is, however, held against this withdrawal to maintain a normal relation between the guides 24 and 50 by a latch 82 fulcrumed upon a bracket 84 fixed to the frame and forced up by a torsion-spring 86, so it lies in a depression 81 in theunder side of the slide (Fig. 1). As the work, governed as to its vertical position and relation to the knife [2 by the guide 50 lying in the crease of the shoe at the shank, advances so the ball-line approaches the guide, the operator,

through the rod 42, lowers the guide 24. The slide '65 is held against movement by the latch 82, the opening 16 in the guide-actuating bellcrank lever' lll traveling idly along the slide-projection 14', while the abutment-roll 62 turns, without bodily movement, about the axis I8 of the lever 21!; The guide '5llis therefore held positively against upward displacement, and the full width of the sole-extension at the shank is maintained undisturbed, even if'the actuation of the rod 42 had been premature. When the. surface 26 of the descending fo'repart guide is so approaching the end-of the crease-guide that it is in proximity'to the:shoe-upperand.is ready to take control of the work, a screw 88, threaded through an extension of the lever-arm I8 and which has been traveling idly, during the lowering of the forepart-guide, strikes the tail 92 of the latch 82, This withdraws the latch "from the depression 81 in the slide-'65, which, when thus freed, is drawn to the left by thespring 8!], until it is stopped by engagement. of the slide-proj ection M with the left-handend'ofthe opening 16 (Fig. 2). The end") of the slide is thus retracted from between the abutments 56 and'62, allowing the spring 60 to raise the guide '50 from the crease. The movement ofwithdraw'alofthe slideis rectilinear, without any angular. component which would tend to displace the crease-guide so the sole would be narrowed; The-movement is limited by the engagementof the abutment-surface 54 with the abutment-roll 62. This leaves the surface 26 of the guide, 24 in contact with the shoe-upper an'd'in complete control of'the width of the sole-extension during theoperation upon the forepart. The crease-guide, inthe meantime, has held the work continuously against movement which would *have narrowed the shank. By adjusting the extent of projection of the screw '88 from thelever extensionflll, there may be variedthetime of release of the crease-guide, and its elevation,-with respectto the lowered position of the forepart-guide. When the operator freesthetreadle'and theforepartsguide rises to again leave the-work'positioned by the creaseguide, the screw -88is separated from the tail of the latch 82, allowing; the spring 86-to lift said latch against the under side of the-slide, As the lever-arm 18 turns counterclockwise, the lefthand end of the opening "15, acting ,upon the projection.14, forces-.the endi of the slide back between the abutments, thecurved surface 54 and. that'of the r0ll62 facilitating. its entrance. At theisa'me time, the slidespring-BU is tensioned. The crease guide 5B is lowered by the entrance of the slide to its normalactive pos'itlon,

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

1. In a machine for operating upon the soles of shoes, a guide for engagement with the crease of a shoe, a guide for engagement with the forepart of a shoe, said guides being movable into and out of work-engaging position, means for securing the crease-guide against movement from its work-engaging position until the forepartguide has fully reached its work-engaging position and means for thereafter moving the securing means to release the crease-guide.

2. In a machine for operating upon the soles of shoes, a movable forepart-guide, means arranged to move the forepart-guide into Work-engaging position, a crease-guide positioned by the forepart-guide for engagement with the work, means for moving the crease-guide out of workengagin position, and means including a member movable after the work engaging movement of the forepart-guide for controlling the movement of the crease-guide out of work-engaging position.

3. In a machine for Operating upon the soles of shoes, a movable forepart-guide, means arranged to move the forepart-guide into workengaging position, a crease-guide positioned by the forepart-guide for engagement with the work, means for moving the crease-guide out of workengaging position, and means including a member movable with the forepart-guide and independently thereof for controlling the movement of the crease-guide out of work-engaging position.

4. In a machine for operatin upon the soles of shoes, a movable forepart-guide, means arranged to move the forepart-guide into work-engaging position, a crease-guide positioned by the forepart-guide for engagement with the work, means for moving the crease-guide out of work-engaging position, means including a member movable independentl of the forepart guide for controlling the movement of the crease-guide out of work-engaging position, and means arranged to vary the time of control of the crease-guide by the member,

5. In a machine for operating upon the soles of shoes, a movable iorepart-guide, means arranged to move the forepart-guide into work-engaging position, a crease-guide positioned by the forepart-guide for engagement with the work, a movable member through which movement of the forepart-guide is communicated to the creaseguide, means independent of the guides for retaining the member against movement, and means controlled by the forepart-guide for releasing the member from the retaining means.

6. In a machine for operating upon the soles of shoes, a movable forepart-guide, means arranged to move the forepart-guide into workengaging position, a crease-guide positioned by the forepart-guide for engagement with the work, a movable member through which movement of the forepart-guide is communicated to the creaseguide, means independent of the guides for retaining the member against movement, means controlled by the forepart-guide for releasing the member from the retaining means, and means arranged to vary the time at which the forepartguidereleases the retaining means.

7; In a machine for operating upon the soles of shoes, a movable forepart-guide, means arranged to move the iorepart-guide into work-engaging position, a movable crease-guide, there being opposite abutments movable with the two guides, a member movable between the abutments to determine the normal relation between the guides, a latch by which the member is initially retained between the abutments, means for releasing the member from the latch, and means for retracting the released member from the abutments.

8. In a machine for operating upon the soles of shoes, a movable forepart-guide, means arranged to move the forepart-guide into work-engaging position, a movable crease-guide there being opposite abutments movable with the two guides, a member movable between the abutments to determine the normal relation between the guides, a latch by which the member is initially retained between the abutments, a member movable with the forepart-guide into contact with the latch to release the relation-determining member, there being means arranged to render the latch-releasing member ineffective during a portion of its movement, and means for retracting the released member from the abutments.

9. In a machine for operatin upon the soles of shoes, a lever carrying a forepart-guide and being provided with an opening, means arranged to move the forepart-lever, a lever carrying a creaseguide, the two levers having opposite contactportions, means for urging the contact-portion of the crease-guide-lever toward that of the forepart-guide-lever, a slide movable between the contact-portions of the two levers and having a projection extending into the forepart-leveropening, means for retracting the slide, means for retaining the slide against retraction, and means movable with the forepart-lever for releasing the slide from the retaining means.

10. In a machine for operating upon the soles of shoes, a lever carryin a forepart-guide and being provided with an opening, means arranged to move the forepartlever, a lever carrying a crease-guide, the two levers having opposite contact-portions, means for urging the contact-portion of the crease-guide-lever toward that of the forepart-guide-lever, a slide movable between the contact-portions of the two levers and having a projection extending into the forepart-leveropening, means for retracting the slide, a latch for retaining the slide against retraction, and a member variable in position upon the forepartlever for engagement with the latch to release the slide.

JAMES P. FREDERICKSEN.

REFERENCES CITED UNITED STATES PATENTS Name Date Smith Feb. 24, 1920 Number

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