Pittsburgh Police hats with checkered bands, which are dark navy blue and gold in color, popularly known as the "Sillitoe Tartan" and named after its originator, Percy J. Sillitoe, Chief Constable of Glasgow, Scotland, in the 1930s. While the checkered band is a common police symbol in the United Kingdom, Australia and some European countries, the Chicago Police Department, Cook County Sheriff's Police, the Allegheny County Sheriff's Office, and the Pittsburgh Bureau of Police are the only police forces in the United States that have adopted it as part of their uniforms. As recently as July 1930, police were required to wear
City of Glasgow Police in 1878, a horse drawn van was introduced for conveying prisoners. Due to the City of Glasgow Act 1891, the City boundaries were extended to the south, north and west sides of the City. Due to the extension, a system of 14 cast iron Police Signal boxes was installed in the outlying areas. By 1900, the City of Glasgow Police numbered 1355 officers and men. In 1904 the force appointed its first Chief Inspector of Detectives, and the first Detective Constables were appointed. The Old Central Police Office in South Albion Street closed and a new Central Police Office in