I suspect the brake shoes need adjusted. If they aren't close enough to the drum it will take several pumps of the pedal to drive them out. When you then let off of the pedal the springs on the shoes pull them back, returning the brake fluid to the master cylinder.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.