Lock for open frame vehicles

In a cable lock system for tubular frame vehicles such as bicycles and motorcycles and for other tubular frame devices wherein a lock cable is stored in a hollow frame tube and capable of being withdrawn to lock the vehicle to a post or similar stationary member, that improvement which comprises:

• (a) an entrance tube passing through and affixed to a wall of a hollow frame member and extending partway into said member, and
• (b) a cable of relatively stiff resilient material dimensioned to pass through said entrance tube and having an entrance end permanently bent at an angle relative to the general lineal line of said cable, a stop tube on the bent portion of the entrance end of said cable also dimensioned to pass through said entrance tube having a projecting portion extending away from the entrance end of said cable to project beyond the normal radial dimension of said cable, said cable being flexible enough to permit straightening for inserting said stop tube and said cable through said entrance tube, whereby when through said tube said cable end will assume the bent position and thrust said projecting portion of said stop tube outwardly to block reverse motion of said entrance end of said cable out of said entrance tube.