Rod Linnell was a square dance caller who died in 1966. He had a book of his dances in the works when he died. The book was completed by Louise Winston, and published with the title Square Dances From A Yankee Caller's Clipboard in 1974.
The book has a glossary which defines all of the figures used in it. Ladies Chain is defined as the ladies chaining over and back again. Ten variants of a Ladies Chain are then listed, including Ladies Half Chain (over to your opposite but not back to your partner), Gents Chain, Gents Half Chain, Gents Grand Chain, and Ladies (or Gents) Half Grand Chain.
Here's the entry for Gents Chain:
"GENTS CHAIN. This is used much less often than ladies chain and is done similarly, with the following differences: The two men join LEFT hands as they pass to go to the opposite girl. Each man puts his right arm around the girl's waist, and she holds the pivot as she turns him forward to face the opposite couple again. The men return to their own partner in the same manner."
I don't know if that definition was written by Rod Linnell or by Louise Winston.
The book contains seven contras written by Rod Linnell, in addition to squares and double quadrilles, but none of the contras include the Gent's Chain figure.
Jacob Bloom