Yes, you should get a continuous crop froom your Rattlesnake pole beans. However, very hot weather and dry weather will shut them down for a period of time. (That was most of the summer for my Rattlesnake beans last year!) Sounds like yours have already picked up again.
Bush beans will produce a large first crop, then a smaller second crop, and even a third if you let them. I like the "bush beans are the determinants of the bean world" concept.
Below is a photo of a blossom from Blue Lake pole beans. I had never realized--even after growing them for many years--that some of the blossoms are white and some yellow-tan. Cool.
DSC_7009 Blue Lake bean blossom.jpg