I read a couple of posts recently about “Palm Couplings”, I had forgotten all about them.
Early 1970 when I joined Robert Baillie, all the units were fitted with Palm Couplings,
and on/off taps on the 3 Susie lines, Red,Blue,& Yellow.
If you were coupled up to an Agnew & Lithgow,Stranraer,trailer loaded with Guernsey Tomatoes
for Belfast Market, you had to make sure that you had some “Susie Adaptors” with you,
because Agnews trailers were equipped with the “Self Sealing Push On/Pull Off” Susies.
Regards, Ray Smyth.