Named for their typeBAR-LOCKing mechanism, Bar-Locks also featured a full, double keyboards and front-downstrike typebar arrangements. They produced ca.1899 by the Columbia Type-Writer Manufacturing Company of New York, NY and invented by Charles Spiro. Their most stunning feature, especially on the earliest models, was their ornate, cast iron shields which stood upright behind the keyboard. These shields served two purposes. First, they protected the typebars and, second, they provided them something solid to rest against. As the models progressed, the shield became less and less ornate and the full keyboard was eventually phased out.