1866 Ann. Rep. Commissioners Patents 1864: Arts & Manuf. I. Index p. xxxi/1 in (38th Congr., 2nd Sess.: House of Representatives Executive Doc. 51) Fire-arms, Locks of, Safety device for.
1929 7 Nov. 8/4 All the latest safety devices, such as four-wheel or six-wheel brakes, and safety glass.
2002 R. Cohen i. i. 16 A further safety device..set up along the length of the course to divide the two knights and prevent their horses from colliding.