Lasting apparatus with yieldable wiping means

Abstract

A heel lasting machine for wiping the heel portion of the margin of an upper mounted on a last against an insole secured to the last bottom by wipers that are yieldably mounted and that are constrained against yieldable movement at the beginning of the wiping operation.

I claim: 
     
       1. A lasting apparatus comprising: a support arrangement for supporting bottom-down a shoe assembly, that comprises a last having an insole located on its bottom and an upper mounted thereon, with a selected portion of the upper margin extending downwardly of the corresponding portion of the insole in such a manner that said portion of the insole substantially lies in a particular plane; a primary arrangement; a back-up plate located above the primary engagement; yieldable means mounting the back-up plate to the primary arrangement so as to provide for limited universal movement of the back-up plate with respect to the primary engagement; .[.wiping means.]. .Iadd.a pair of wipers.Iaddend.; means mounting the .[.wiping means.]. .Iadd.wipers .Iaddend.to the back-up plate for planar .Iadd.and inward .Iaddend.movement with respect to the back-up plate between a retracted and an advanced position; means for initially maintaining the .[.wiping means.]. .Iadd.wipers .Iaddend.in .[.its.]. .Iadd.their .Iaddend.retracted position in a wiping position that is adjacent to said portion of the shoe assembly, that is in registry with said portion of the insole and that is maintained in a plane that is approximately parallel to said particular plane; means for thereafter moving the .[.wiping means.]. .Iadd.wipers rearwardly and inwardly .Iaddend.from .[.its.]. .Iadd.their .Iaddend.retracted to .[.its.]. .Iadd.their .Iaddend.advanced position through a wiping stroke to wipe said upper margin portion against said insole portion, said yieldable means mounting the back-up plate to the primary engagement enabling the .[.wiping means.]. .Iadd.wipers .Iaddend.during the wiping stroke to partake of said limited universal movement so as to conform precisely to the plane of said portion of the insole; and means effective only at the beginning of the wiping stroke to constrain the .[.wiping means.]. .Iadd.wipers .Iaddend.against said limited universal movement provided by the yieldable means, whereby the yieldable means is operative on the .[.wiping means.]. .Iadd.wipers .Iaddend.only after the  .[.wiping means has.]. .Iadd.wipers have .Iaddend.commenced to wipe said upper margin portion against said insole portion. 
     
     
       2. The apparatus as defined in claim 1 wherein the means for moving the .[.wiping means.]. .Iadd.wipers .Iaddend.comprises: drive means operatively connected to the .[.wiping means.]. .Iadd.wipers .Iaddend.for effecting said movement of the .[.wiping means.]. .Iadd.wipers.Iaddend.; wherein the apparatus further comprises: a cam, operatively connected to said drive means and said .[.wiping means.]. .Iadd.wipers.Iaddend., so constructed and arranged as to move from a retracted position to an advanced position during said wiping stroke in a plane corresponding to the plane of movement of the .[.wiping means.]. .Iadd.wipers.Iaddend.; and wherein said means to constrain the .[.wiping means.]. .Iadd.wipers .Iaddend.against said limited universal movement comprises: lug means mounted to said primary arrangement so constructed and arranged as to bear against the cam only at the beginning of the wiping stroke. 
     
     
       3. A lasting apparatus comprising: a support arrangement for supporting bottom-down a shoe assembly that comprises a last having an insole located on its bottom and an upper mounted thereon with a selected portion of the upper margin extending downwardly of the corresponding portion of the insole in such a manner that said portion of the insole substantially lies in a particular plane; a primary arrangement; a support plate mounted to the primary arrangement for swinging movement about a transverse axis; first spring means yieldably urging the support plate upwardly about said transverse axis; a back-up plate located above the support plate and mounted to the support plate for swinging movement about a longitudinal axis; second spring means interposed between the support plate and the back-up plate for yieldably urging the back-up plate about said longitudinal axis; said first and second spring means providing for limited universal movement of the back-up plate with respect to the primary arrangement; .[.wiping means.]. .Iadd.a pair of wipers.Iaddend.; means mounting the .[.wiping means.]. .Iadd.wipers .Iaddend.to the back-up plate for planar .Iadd.and inward .Iaddend.movement with respect to the back-up plate between a retracted position and an advanced position; means for initially maintaining the .[.wiping means.]. .Iadd.wipers .Iaddend.in .[.its.]. .Iadd.their .Iaddend.retracted position in a wiping position that is adjaent to said portion of the shoe assembly, that is in registry with said portion of the insole and that is maintained in a plane that is approximately parallel to said particular plane; means for thereafter moving the .[.wiping means.]. .Iadd.rearwardly and inwardly .Iaddend.from .[.its.]. .Iadd.their .Iaddend.retracted to .[.its.]. .Iadd.their .Iaddend.advanced position through a wiping stroke to wipe said upper margin portion against said insole portion, said first and second spring means enabling the .[.wiping means.]. .Iadd.wipers .Iaddend.during the wiping stroke to partake of said limited universal movement so as to conform precisely to the plane of said portion of the insole; and means effective only at the beginning of the wiping stroke to constrain the .[.wiping means.]. .Iadd.wipers .Iaddend.against said limited universal movement provided by said first and second spring means, whereby said first and second spring means is operative on the .[.wiping means.]. .Iadd.wipers .Iaddend.only after the .[.wiping means has.]. .Iadd.wipers have .Iaddend.commenced to wipe said upper margin portion against said insole portion. 
     
     
       4. The apparatus as defined in claim 3 wherein the means for moving the .[.wiping means.]. .Iadd.wipers .Iaddend.comprises: a drive means operatively connected to the .[.wiping means.]. .Iadd.wipers .Iaddend.for effecting said movement of the .[.wiping means.]. .Iadd.wipers.Iaddend.; wherein the apparatus further comprises: a cam, operatively connected to said drive means and said .[.wiping means.]. .Iadd.wipers.Iaddend., so constructed and arranged as to move from a retracted position to an advanced position during said wiping stroke in a plane corresponding to the plane of movement of the .[.wiping means.]. .Iadd.wipers.Iaddend.; and wherein said means to constrain the .[.wiping means.]. .Iadd.wipers .Iaddend.against said limited universal movement comprises: a first lug mounted to said primary arrangement and a second lug mounted to said support plate, said lugs being so constructed and arranged as to bear against the cam only at the beginning of the wiping stroke.