Shoe lasting machines

A machine for lasting side portions of shoes comprising:

• a shoe support arrangement by which a last carrying a shoe upper and an insole can be positioned and which includes means serving to position the shoe in a desired relationship with the longitudinal center line of the machine;
• instrumentalities for operating on side portions of a shoe supported by the shoe support arrangement;
• means for effecting relative movement between the shoe support arrangement and said instrumentalities in a direction extending lengthwise of a shoe supported by the shoe support arrangement, whereby the instrumentalities are caused to operate progressively along opposite side portions of such shoe, wherein the instrumentalities are mounted on a support which is movable between a first position, in which the instrumentalities can be positioned symmetrically at opposite sides of the longitudinal center line of the machine, and a second position, in which said instrumentalities can be positioned offset from said line;
• a support moving means is provided for moving the support between its first and second positions, the arrangement being such that the support is positioned in a selected one of its first and second positions at the start of an operating cycle of the machine and is moved by the support-moving means to the other of said positions during said operating cycle;
• said support being movable between its first position and a selected one of two second positions, in which said instrumentalities can be positioned offset from the longitudinal center line of the machine, said two second positions of the support being arranged symmetrically at opposite sides of the first position thereof, and the arrangement being such that the support is caused to be moved as aforesaid during an operating cycle of the machine between its first position and one of its second positions selected according to whether the shoe being operated upon is a left or a right;
• said instrumentalities comprising adhesive applying instrumentalities;
• said support-moving means for the support for the adhesive applying instrumentalities as they are moved between its first and second positions, comprises cam means;
• and
• wherein said cam means comprises a cam member having two cam faces and means for moving said member so as to enable one or other of said faces to be engaged by an abutment member, the arrangement being such that, in an operating cycle of the machine, relative movement is caused to take place over a predetermined distance between the cam member and the abutment member between a first operative position in which they are out of engagement with one another, in which position the support for the adhesive applying instrumentalities in its first position, and a second operative position in which the abutment is located in engagement with one or other of the cam faces, and further that, cam member and abutment member in such second operative position, when one of said cam faces is engaged by the abutment member said support is in one of its second positions, and when the other cam face is so engaged, said support is in the other of its second positions.