Patent for a new and improved padlock. This design "has for its object to provide an improved lock which, while simple in construction and operation, is at the same time so constructed as to be proof against the possibility of picking by unauthorized persons, and one which when unlocked will automatically release itself from the object and which locks of itself when sprung together" (lines 7-15). It consists in "a locking-lever pivoted at its center in said casing and provided with a locking-pin at one end, adapted to engage the shackle-perforation, [and] a leaf-spring arranged within the casing" (lines 1-5).

Patent for hand plow propeller. Illustration included.