Machine for lasting heel seat portions of shoes

Claim 1

A machine for lasting heel seat portions of shoes, comprising a shoe support for supporting, bottom uppermost, a shoe comprising an upper carried on a last and an insole held against the last bottom, a heel band for clampingly engaging the heel end of a shoe supported by the shoe support, a wiper assembly for wiping marginal portions of the shoe upper, at the heel seat region thereof, inwardly over, and pressing them against, corresponding marginal portions of the insole, and fastener inserting means effective to cause said lasting marginal portions to be secured, when pressed as aforesaid, to said corresponding marginal portions of the insole, wherein the wiper assembly includes a pair of wiper plates, fluid pressure operated means for effecting movement of the wiper plates in a direction extending lengthwise of the shoe bottom, and cam means effective, as such lengthwise movement is effected, to cause pivotal movement of the wiper plates to take place about an axis extending normally to the direction of lengthwise movement thus to cause the wiper plates to effect an in-wiping movement in relation to the shoe bottom, and further wherein each wiper plate has a row of apertures formed therein, adjacent a leading edge thereof, through which apertures fasteners can be driven by the fastener inserting means to secure the lasting marginal portions of the upper as aforesaid, the machine further comprising control means by which the operation of the fluid pressure operated means can be controlled, said control means comprising two cooperating abutment members, one of which is movable, under the action of the fluid pressure operated means, as lengthwise movement of the wiper plates is effected as aforesaid, from a position spaced from the other abutment member into engagement therewith, such engagement being effective to cause the action of the fluid pressure operated means to be terminated thereby causing the lengthwise movement of the wiper plates, and thus also the in-wiping movement thereof, to be arrested and the control means further comprising adjustment means whereby, when the machine is in a rest condition, the distance between the abutment members can be varied thus to enable the position to which the wiper plates (and the apertures formed therein through which fasteners can be driven) are moved when lengthwise and in-wiping movement of said plates is subsequently effected as aforesaid to be set in a desired relationship with the shoe bottom.