North Drums are horn-shaped drums that were designed to project their sound outward, so the audience can hear the most direct qualities of the drum. They were used by a number of notable drummers during the 1970s and continued to have limited popularity into the 1990s, well after the drums stopped being commercially sold. More about these unique drums on Wikipedia: https://en.wikipedia.org/wiki/North_Drums
Cobham, Doug Clifford of Credence Clearwater Revival, Alan White of Yes, Joe English of Wings, Gerry Brown, Russ Kunkel, W.S. "Fluke" Holland (Johnny Cash), and Richie Albright (Waylon Jennings) all used North Drums at some point.