Not another what's this from thread

I have taken on the task of trying to identify and catalogue a jumble of aircraft components recovered from an airfield tip. Most of the bits are the metal remains of a Hamilcar and Horsa glider but here are two parst that I have failed to indentify from the APs and parts lists available to me, so its over to the collective forum wisdom.
[ATTACH]176948[/ATTACH]
This could be agricultural but I dont think so. It looks for all the world like a Stephenson valve gear off a steam engine but I rather think its more likely to be part of a trim system, hence the lightweight chain operated bottle jack.
[ATTACH]176949[/ATTACH]
This is obviously part of the flight controls. All the information I have on the Hamilcar and Horsa show the corresponding parts in their systems to be chain operated whilst thsi is obviosly cable.
[ATTACH]176950[/ATTACH]
The part numbers from the previous part none of which match my parts lists. The number 51 is of course the Airspeed type number for the Mk I Horsa.

Sorry for the use of the bank note as a scale it was the first thing that came to hand.