Witherell's 1902 patent
https://patents.google.com/patent/US697061
1904
https://patents.google.com/patent/US767537A/en?oq=767%2c537+1904

DeLong 1901
https://patents.google.com/patent/US670100A/en?oq=670%2c100+1901

Thorneley 1901
https://patents.google.com/patent/US673803A/en?oq=673%2c803+1901