A snowplow or snow plow or snowplough or snow plough is a device intended for mounting on a vehicle, used for removing snow and ice from outdoor surfaces, typically those serving transportation purposes.
By the mid 1800s, several different inventors had patented their own versions of a horse-drawn snow plow meant for clearing alleys and residential streets that saw more foot traffic than carriages. In 1862, Milwaukee became the first major municipality to try one out, and it was a hit and considered as the inventor of the modern Snow Plough.
Check the following link for more detail -
https://en.wikipedia.org/wiki/Snowplow