I need the opposite of a worm gear...what's it called?

Worm gears provide a gear reduction; I need an increase. I also need the input direction of motion to be perpendicular to the output direction of motion, just like a worm gear. What kind of gear am I looking for?

I made a bicycle powered blender and had MacGyver’d this part of the design using a small skate wheel in contact with the larger bike wheel. This worked well, but I want a larger gear ratio to get the blender spinning faster with less work required from the cyclist. So no industrial gears made for large machines, lol, something small and compact is a must. I forget what range of RPM I was looking for originally, but if I can just get a name for the type of gear I need, that will be a great starting point. Thanks!

Or if I ever find one of these on Craigslist, maybe I could just use the skate wheel :D