Hinges for Gullwing

[arawire]

OK... so I have these hinges that are for gullwing doors (I brought on ebay) .. I've never seen anything like them before . I can't work out how to fit them to the door. They have have 2 screw holes to fit the hinge to the base (block) ... and none from the block? Am I being dumb here - or should they be welded? Any help greatly appreciated.

[paintman]

Don't know about the 'gullwing door' bit but they just look like normal concealed door hinges for house/office doors attached to something by the screwholes normally used to attach them to the door & frame. Possibly shop demo pieces so people can see how they work?
E.G. https://www.sdslondon.co.uk/soss-concealed-hinges....

[Opel-GT]

Googled and found the following

[paintman]

Interesting. You learn something new every day!

[arawire]

Wow ... thanks so much for this ... I've been googling and googling and found nothing ... that's fantastic. Thanks

[arawire]

I just had a thought.... as furniture concealed hinges these are dead cheap - about $30... They're selling them on ebay up to $300 per pair for gullwing doors - do you think this is a rip off?

Have a look here:

https://www.ebay.co.uk/itm/Gullwing-Hinge-and-Bloc...

[paintman]

Makes you wonder doesn't it.