Define "it didn't work".
did you screw the center part of the puller most of the way out? Did you screw the puller as far into the crank as you could? Did you use tools and not just hand tight?
Some times on older bikes it's tough to get the crank to come off, but they almost always do. Use wrenches to get the puller on the crank, and to turn the center part that does the work. You might have to use lots of muscle, or hit the end of the wrench with a dead blow hammer to get it off.