If you like my Claw, please support on LEGO Ideas to make it a real set.
In this MOC, I used a system of beams working as levers and push rods to carry the movement from the handle to the claw. I also used springs to make the whole mechanism reset when you let go and a couple of rubber parts to give the claw a good grip. The result is this amazingly useless, yet immensely cool thing that can hold a weight of more than 2 kg! To demonstrate, I made a video of it lifting the huge LEGO Technic bulldozer. (the video can be found on the page linked above)
For a further description and some more photos please visit the link and also check out the update when there.
Thank you