Locking clip for a billboard sign tensioning system

A clip usable in a cable tensioning system for engaging and removably retaining a portion of a sheet to be stretched, comprising:

• a. a base plate comprising
• i. a generally flat base member having
• 1) a top surface comprising a front portion having a gripping surface and a rear portion,
• 2) a pair of opposing first retaining arms extending upward from said top surface, each first arm having an angled portion angled toward the other arm,
• 3) a bottom surface having a first hook extending therefrom, said first hook having a channel defined therein capable of receiving a portion of a cable,
• 4) a front edge and a rear edge, and
• 5) at least one slot formed in said base member;
• and,
• b. a top member comprising
• i. a top surface having a second hook extending upward therefrom, said second hook and said top surface defining a channel capable of receiving a portion of said cable,
• ii. a bottom surface having at least one nub protruding therefrom, said nub being capable of being received at least partially within said base member slot, and,
• iii. a front portion and front edge and a rear portion and rear edge, said front portion being wider than said rear portion,
• wherein said first retaining arms are capable of engaging a portion of said top member.