Shoe machine air blast mechanism and air blast safety device

摘要

A device for cement applying mechanisms in shoe lasting machines, wherein a safety valve is caused to prevent air from entering an air feed line in the cement feed when there is no shoe in the shoe machine and the shoe machine has been actuated, thereby preventing the machine operator from being injured by hot cement, and where nozzles may be effectively used with an air blast to controllably project hot cement onto portions of insoles some of which may not be immediately thereadjacent.