Here is a 1930s or 1940s Deluxe Hoop mount Cymbal Clamp WITH tilter, which you dont often see. I think this was made by Duplex but I cant be sure.
1960s-1970s Ludwig No. 1127 Bass Drum Hoop Mount Hi-Hat Brace 5/8"
SLINGERLAND 50s 60s Vtg COWBELL POST Hoop Clamp Percussion Mount Part Chrome USA
LUDWIG #45N Clipper Rack Tom Ratchet Arm Hoop Clamp Mount Holder Part Nickel 60s
LUDWIG 60s Vtg Hoop Clamp Cowbell Percussion Mount Post Holder Part USA Nickel
SLINGERLAND Rack Tom Hoop Clamp Arm Holder Mount Bracket Part Chrome 50s 60s Vtg
WALBERG & AUGE Hoop Clamp Rack Tom Mount Holder w/ Long Spade Arm Nickel 50s Vtg
