No worries. I don't have weavers elbow - which is the same injury, but with a different cause, as tennis elbow.
The weaver who sold me my Toika loom was plagued by weavers elbow.
Her doctor's advice was to change her grip on the beater, so her husband attached this handle to the top bar of the beater.
This handle allowed her to beat with a side grip, which was somewhat easier on her injured elbow.
The handle was probably a round piece of railing for a stairway.
It was attached with screws. It did wiggle loose, so if you're thinking of making something similar, consider other ways to attach the handle. It gets a lot of stress!
Macomber sells these handles to attach to your beater. (Photo taken at Sarah Haskell's studio. Sarah is also a Macomber sales rep - so she could help you buy one of these handles - or anything else from Macomber!)
Most people grip this handle with their knuckles toward the ceiling.
But you could beat with your palm to the ceiling - which is the position that the doctor really recommended to combat weaver's elbow. That position puts the least stress on an injured elbow. (I did find it pretty awkward though!)
For me, this post is a photographic blast from the past! I'd forgotten how difficult it was for me to get pictures in focus, let alone without tons of clutter in the background when I first started taking pictures for my blog. I took these photographs last winter.