If your thermocouple is turning cherry red both the old one and the new one and the pilot lights but goes out when you let go of the button I would suspect a bad gas valve. If it's the furnace I think it is it has a metal door over the gas valve? That's a very easy gas valve to change. Instead of trying to get a gas valve to match the model number of the furnace I would try to get a gas valve by matching the model number of the gas valve itself. Might save you a few dollars that way. That burner is pretty old make sure that none of it has rusted away before you spend money on a gas valve. I would tell you to check the heat exchanger also but I don't think you can see any of it on that furnace. If the wind blew out the flame make sure your cap is in good shape on the roof also. Be safe