What is this bit?
 

We have a bit that was donated to our rescue in a pile of bits, anyone know what it's used for or exactly how it works? o.O

http://farm9.staticflickr.com/8174/8...b9933cd6_n.jpg

http://farm9.staticflickr.com/8439/8...d537c366_n.jpg

http://farm9.staticflickr.com/8173/8...4c885fa4_n.jpg

It's called a Houghton Driving bit, though I'll be honest, I have no clue how it's supposed to fit on the horse or what the function is :?.

HOUGHTON BIT-Big Dee's Tack & Vet Supply

Oh - huh- I was wondering if the metal loop that hang down works like a psuedo curb strap, but having no leverage that didn't make sense. I suppose maybe it's used for leads? like thoroughbreds have the loop IDK what it's called.

It's a bar bit and it's used on racehorses. Atleast, they call it a bar bit at our barn. I think Houghton bit is the correct term. Here are pictures of Rachel Alexandra with one on: Rachel Alexandra and Dominic Terry - Saratoga workout 9-27-10 | Barbara D. Livingston

Basically, you can put the reins on one of two spots, in front of the chin cage, or behind it. It is used on racers that are very strong and like to just barge ahead.

is the extra part hanging down there for a lead? Or something else?

It's to keep the horse from opening its mouth too wide. When you lead a race horse, you put the pony strap right on the bit for the most control. It also keeps the bit from flipping in the horse's mouth.

ohhhhh very interesting! Thanks! I'll tell all the others who were curious. Why wouldn't they just use a curb strap or a nose band so they can't open their mouth too wide? I'm just curious xD

They do use nosebands, but they don't always work. A curb strap would be too loose and would flap around while they are running.

Cool, good to know, thanks so much!

It also looked like they had a tongue tie on her? Is that right?