Career
He was of German descent. In 1804 he bought Gjøvig farm in a then-rural area by the river Hunnselva. In 1807 he founded the glass factory Gjøvig Glassverk on the other side of the river, creating an industrial environment and laying the grounds for a larger city there.
The factory became known for its blue vases, basing the color on cobalt blue from Blaafarveverket and dubbed "Gjøvik blue".
Near the factory he also erected the administration building "Kauffeldtgården". The building still stands, and was preserved in 1985.
lieutenant was discontinued in 1843, and Caspar Kauffeldt died in the same year.