The Jacobs geared-ring chuck was patented in 1902, so drills like this one that have Jacobs chucks carefully (and permanently) mounted on their spindles are more probably early demonstrators rather than user fixes. I have another Millers Falls eggbeater drill that not only has a similar early Jacobs chuck (patent dated September 16, 1902) it also has a brass main gear and magnificently machined cast iron crank handle. What makes the seond drill (a No.1 model) even more interesting is that its Jacobs chuck's markings are inverted relative to the markings on the present No.2 model. Except for the chuck, this is a Type H No.2 drill.