Cement side and heel lasting machine

A machine, operable on a shoe assembly formed of a last having an insole located on its bottom and an upper mounted thereon with the toe portion of the upper margin being wiped against and secured to the insole and unwiped portions of the upper margin extending heelwardly of said wiped upper margin portion, for applying cement in the corners between said unwiped margin portions and the corresponding portions of the insole periphery comprising:

• a shoe assembly support for supporting the shoe assembly bottom-up with the toe end of the shoe assembly facing forwardly;
• a pair of nozzles, located above the shoe assembly, mounted for forward-rearward movement, for heightwise movement, and for inward-outward movement;
• a housing;
• a stop member, mounted to said housing, located in a particular location;
• an engaging member, mounted for forward-rearward movement in unison with the nozzles, located rearwardly of the stop member in intersecting relationship with the stop member;
• means for initially retaining the nozzles in rearward, upper, and inner positions;
• means for thereafter moving the nozzles, together with the engaging member, forwardly until the engaging member intersects the stop member;
• means for thereafter effecting lowering and outward movement of the nozzles to move the nozzles into said corners heelwardly of the boundaries between said wiped and unwiped upper margin portions;
• means for thereafter removing the stop member from said particular location to enable the nozzles to resume their forward movement so as to bring the nozzles to said boundaries;
• means operative when the nozzles have arrived at said boundaries to effect rearward movement of the nozzles while maintaining the nozzles in said corners;
• and means for extruding cement from the nozzles into said corners during said rearward movement of the nozzles;
• the machine having the improvement wherein said stop member is mounted to the housing for forward movement from a rearward stop member position that is determinative of said particular location to a forward stop member position that is in intersecting relationship with the engaging member;
• and wherein said means for removing the stop member from said particular location comprises means for moving the stop member from said rearward stop member position to said forward stop member position, the intersection of the engaging member with the stop member during said resumption of the forward movement of the nozzles when the stop member is in said forward stop member position being determinative of the arrival of the nozzles at said boundaries.

A mechanism for applying a substantially uniform quantity of cement along the surface of a workpiece comprising:

• a nozzle mounted for movement from a starting position to a final position along the workpiece;
• a motor connected to the nozzle operable to effectuate said nozzle movement;
• means for initially causing the motor to maintain the nozzle stationary in said starting position;
• means for thereafter operating the motor to effect said nozzle movement;
• and extruding means for extruding cement from the nozzle during said nozzle movement;
• the mechanism having the improvement comprising:
• first extrusion rate control means, effective at the beginning of the nozzle movement when the motor is moving the nozzle at a relatively slow speed, to cause the extruding means to extrude the cement from the nozzle at a relatively slow rate;
• and second extrusion rate control means, operable after the nozzle has moved a prescribed distance from its starting position that is less than the distance from its starting position to its final position at which time the motor is moving the nozzle at a relatively high speed, to cause the extruding means to extrude the cement from the nozzle at a relatively high rate.