Blind Stop.

Patent for a new and improved blind stop. This design consists in "[t]he combination, with a shutter provided with pivotal slats, of a flat spring-metal fastening-plate provided with a slot for clearing the slat-pivot, and projections upon its surface for engaging with the end of the slat, and having its rear end secured to the shutter-frame and its front end projecting beyond the plane of the shutter-frame and forming a thumb-piece for operating said spring-plate" (lines 59-67)