When you step inside your kitchen every morning, you probably do not think much about how actually it is easy to work with today's kitchen tools. If you look a step back in history you'll see that, about hundred years ago or less, it wasn't so easy to prepare food.
The device you are looking at is antique blender which has been purchased in Kislovodsk antique shop. It was used to slice and smash fruit and other food but, unlike today's blenders, this one is not powered by electricity. The mechanism on the top of the blender is designed to give this device full functionality despite it is powered by hands.
photos: via