Bicycle lock

A lock for bicycles comprising a cylindrical housing having an enlarged rear end and an integrally-formed forward reduced end, said enlarged end having a large axial bore, said reduced end having a smaller axial bore therein communicating with said large bore, a tumbler mechanism inserted in said large bore and secured thereto, said tumbler mechanism having a housing including an axial bore, a connecting rod secured at one end in said tumbler housing bore and having a face on its opposite end, said connecting rod having an axial bore in said opposite end and said rod partially seated in said bore in said reduced end of said housing, a pin having a shank and a head, said head including an inner face on the side adjacent said shank, a part of said shank anchored in said bore of said connecting rod, a pair of aligned bores in said opposite end face of said connecting rod, a pair of aligned bores in the inner face of said head, a pair of latching members, each latching member having laterally-extending prongs at one end, the prongs being rotatively seated in opposed aligned bores in said inner face of said head and said opposite end face of said connecting rod, a pair of angularly-aligned slots in said reduced end of said housing whereby said latch members are each seated in one of said slots and projected outwardly thereof upon rotation of said tumbler housing which simultaneously rotates the connecting rod and pin.