[5] Those who have seen the Waterbury watch, which developed from this design, may be drawn to the conclusion that this explains why it took so long to wind the Waterbury. Such is not really the case; in the Waterbury the winding wheel (which is on the outer rim of the barrel) was nearly as large as the inside diameter of the case while the pinion engaging with it was of only nominal diameter. This meant that one turn of the winding crown wound the barrel a much smaller fraction of a revolution than in a watch of conventional design. [6] District of Columbia death record 145,013. [7] Hopkins is not in the _Washington and Georgetown directory_ of 1860 or 1862, and 1861 was not available to check. Starting with 1863 he is listed each year through 1871. Starting with 1872 Boyd's _Directory of the District of Columbia_ lists Hopkins as a resident each year (including 1902, the year of his death at 84 years) except 1877, when he was out of the city in connection with the exploitation of his rotary watch patents. Carl W. Drepperd, _American clocks and clockmakers_ (Garden City, N.Y., 1947), in referring to Hopkins, says, "Lincoln, Me. 1840's-1850's: Bangor, Me., to 1862. Inventor of the Auburndale Watch. Also manufactured pianos and clock cases." Developing the Invention Edward A. Locke had long been seeking a simple watch adapted to easy manufacture and a selling price of three to four dollars. While on a trip to Washington his attention was drawn to the Hopkins watch by William D. Colt of Washington.[8] A result of this meeting appears to have been the issuance to Jason R. Hopkins of two patents,[9] in both of which half rights were assigned to William D. Colt. Patent 165831, relates to a barrel arbor for watches. The arbor will be seen (fig. 4) to consist of two parts, one telescoped within the other and the composite arbor _B_-_C_ supported at each end by the frame of the watch. The patent text limits itself to a bare description of the arbor. In the light of what we have seen of the shortcomings of the original model, however, the patent drawings tell that much more had been accomplished on the general design of a more workable rotary watch.