Hardy's had a version, albeit on their spinning rods. Two screw fittings which could be slid up or down the handle and tighten on any length reel foot. Often the rod would be coupled with a Silex reel which would be positioned lower down the handle, similar to double handed fly rods today. The spinning artificial 'bait' (Devon Minnow, Phantom Minnow etc.) would be cast out, direct from the reel and 'swung', spinning in the current as it went.
This from their 1937 catalogue.
Our concept is not totally original (very few things are)
I have seen several other versions of reel seats on a similar theme over the years from many manufacturers including Hardy, Berkley, Bruce and Walker, Shimano, REC etc.
The assembly you have shown here is an excellent example of a similar concept, and likens to a typical “Tennessee”, or Center Pin sliding ring assembly.
This assembly does work fine ... But unfortunately its effectiveness can be somewhat short lived; as the cork grip material that the assemblies slide on will compress over time, and disallow this type of leg locking assembly to function.
This is one of the issues I wanted to address, and improve upon.
There are also a number of other issues that we hoped too address that would improve the concept of this theme.
These issues include creating sliding hood slot sizes to universly fit the inherent variations of both conforming and non-conforming leg thickness, and widths ... As well as their variations in leg length.
This has always been the toughest nut to crack in regards to universal leg fit.
The overall throw of the barrel is also infinitely adjustable, as the center core (between the the opposing threaded sections) can be adjusted in length to create a desired overall barrel length ...
... And the material used for the center core is incredibly durable, non-slip, cushioned, and is milled slightly proud of the threaded barrel ODs. This along with opposing directional lock nuts are all designed to assist in securing the reel legs to eliminate side twisting.
In truth .. I do not know if any, or all of these mentioned elements in total are unique or original to this reel seat <> Maybe so ... Maybe not ...
... What I do know is that this reel seat is new to our selection of reel seats, they work <> And we will be offering them to our clients (as another option) if they choose to use them.
Thanks <> Meiz