I tackled a search for that screwdriver patent. You can go sequentially through patents on
datamp.org/patents/search/shot.php?date=1869-09-07
for particular approved dates. Just change the digits of the date in the address bar.
I looked up all September 7 Tuesdays in an estimated range (1869 1875 1880 1886 1897) and clicked through all the images. There were a dozen or so broken files (no pun intended, although I did spot a Nicholson rasp patent), but hundreds of non-screwdrivers. I only really noticed one screwdriver, and it was not a folder.
I am a little suspicious that
1. the “7” could be a cut-off “T”, leaving the possible dates MUCH broader
2. the tapered ferrule could be from some unrelated patented device, and was utilized to craft an ingenious impromptu folding screwdriver
datamp.org/patents/search/shot.php?date=1869-09-07
for particular approved dates. Just change the digits of the date in the address bar.
I looked up all September 7 Tuesdays in an estimated range (1869 1875 1880 1886 1897) and clicked through all the images. There were a dozen or so broken files (no pun intended, although I did spot a Nicholson rasp patent), but hundreds of non-screwdrivers. I only really noticed one screwdriver, and it was not a folder.
I am a little suspicious that
1. the “7” could be a cut-off “T”, leaving the possible dates MUCH broader
2. the tapered ferrule could be from some unrelated patented device, and was utilized to craft an ingenious impromptu folding screwdriver
Last edited:



