Jack, in your haste to point out errors in the book, you are making them yourself. The L.H. Miller footnote is 22 not 32, and correctly shows the patent number and date. I have been a bit busy lately but I will try to double check your previous postings for accuracy. Or should I say scholarship. Ha Ha Doug
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Jack, of the 3 patents listed for Covert on p. 348, I have only the first two which you have found. No patent shows up in the 1859 U.S. Pat Office Index listing for a Covert lock and I do not know where this 1859 date came from. The second incorrect patent listed in the footnote was 21,865, not 21,685 and that was for a clock escapement. Doug
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Jack, I have only 1 Betteley patent, at least in my organized info, and that is the # 8851 you found. There are no other lock patents listed for Betteley in the 1852 index and although the patent shows a different 5 lever lock, the 12 lever shown in the book is based on it. Doug