1918 roadster wheels and hubs

[Jbjgo]

I have a 1918 roadster with the wrong wheels. I fortunately found some correct, but am trying to remove the old hubs and brake drum to change. I can not get the hubs off. The axle is square with a drive pin from the hub thru the axle. When removed the hub moves outward about an inch but then stops. The external band is loose. I suspect the problem is the internal emergency brake mechanism. I loosened the emergency brake rod to no avail. I do not see a way of getting inside the brake hub as it is a solid metal shield rivited to the brake mechanism attached to the real tube around the axle I do see a screw on the bottomm of the hub which hold the whole mechanism t the tube around the rear axle, but am unable to get loose easily. Any experience in this area would be very appreciated. JIM