The vibrating shuttle was a significant innovation towards the goal of a simple, fast, and reliable lockstitch sewing machine, and the design remained popular for decades. Indeed, even twenty-five years later, on 10 October 1910, Singer was awarded US patent 1005177 for a new shuttle-ejector mechanism for it. (The improvement is one of those incorporated into the 'modernized' models 127 and 128 that replaced the 27 and 28.)
