Hay Trolley ? Carrier Parts?

[lptools]

Hello, I am trying to put a name on these . I think the one on the left is a Carrier Trip? On the right is a Myers Ashland. not sure what to call this assembly. At bottom is what I am guessing to be a type of Panel Clamp?, wondering what it would be used for . Thanks, Lou

[amecks]

The lifting clamp resembles what we used to lift heavy steel panels off our truck by an electric crane.  That was my first real job - B&B Welding in Hialeah, Florida.

[lptools]

Hello, Al. Thanks for the reply. Panel or Plate Clamp is possible. You got me thinking, maybe a Pallet Pulling Clamp?

[Chillylulu]

I think it is a pallet puller.

Chilly

[humber2]

Maybe these are all Myers made items but I don't see them in their 1938  Catalog.

The plate on the left is a knocker which limits travel along the rail.