What is the correct description for these grips ?

[Chrisuk]

Morning all, I saved these grips from the scrap pile, could anyone tell me the correct name / description for them please ?

Pipe wrench / grips / stilsons etc ?

Anyone recognise them from a maker ?

Thanks, Chris.

 

[kaymccampbell]

In the day, we called them self-adjusting wrenches or one-handers. There were thousands of brands and designs. Many were rather marginal performers.