Slider for slide fastener

A slider for a slide fastener comprising in combination,

• a slider body having upper and lower spaced parallel wings joined by a connecting post,
• said upper wing having formed on the top surface thereof a spring groove extending forward to the connecting post,
• a pair of upstanding lugs disposed on opposite sides of a longitudinal center line of the slider body and adjacent the spring groove formed on the top surface of the upper wing,
• a spring support disposed on the upper wing adjacent the pair of upstanding lugs and having a boss disposed on a vertical surface thereof, said boss having a cam surface defined by a steep ramp-like triangular extension,
• said spring support having retention means in opposite end surfaces thereof,
• cut-out slots disposed in the upper wing adjacent each of said retention cavities,
• a spring holding finger extending upward and rearward from the upper wing and defining a rear cam surface along a surface thereof, said rear cam surface being positioned to face said ramp-like triangular extension,
• said spring holding finger extending over a locking hole provided through the upper wing,
• a pull tab having a pair of extending pull arms formed along an end thereof and joined by a cross bar extending therebetween, said cross bar being disposed for co-operating movement between said rear cam surface of the spring holding finger and the said ramp-like triangular extension of the spring support,
• a locking spring having a plate-like body with an elongated and downwardly curved projection extending to the spring groove from its front end and having a pair of downwardly extending retention arms formed midway along its sides, said retention arms being positioned each in a cut-out slot and having retaining tabs bent inwardly and disposed for engagement within said retention means of the spring support,
• sloped abutment surfaces provided on the bottom of the locking spring connected to back edges of each of the retention arms and to the main portion of the locking spring by canted surfaces,
• a downwardly canted abutment surface of the locking spring having a cut-out portion positioned for receiving said holding finger, and
• a tail portion extending vertically downward from the canted abutment surface of the locking spring and terminating in the locking hole as a locking prong, said locking prong disposed to prevent movement of the slider along the slide fastener when in normal position whereby any pulling of the pull tab lifts the locking prong to free the slider for movement.