Slipping clamp

[Ed Edwards]

Hello All,
I need some help/info. I picked up a Bessy strap clamp at a yard sale. It looked good but it doesn’t get tight. As you screw the handle in the strap just pulls out from the canister. I took the cover off of the 6-7 screws that hold the cover on 4 were stripped out. Someone was there before me. I couldn't see anything missing but the band just pulls out.
Any Help would be appreciated.
Ed

[Lee Schierer]

Since you've taken it apart, can you post a photo or two of the inside?