A detachable mount for a rifle telescope sight includes front and rear clamp support bases configured for attachment to a rifle, the bases having in their lateral side walls a plurality of detents arranged to receive the rounded ends of mounting screws extending through laterally spaced legs on front...http://www.google.ca/patents/US5428915?utm_source=gb-gplus-sharePatent US5428915 - Detachable sight mount with elevation adjustment
