later, the automobile, a number of inventors set about to improve existing snow plows. In the US, the "snow-clearer" is said to have been patented as early as the 1840s, for railways. The first snow plow ever built specifically for use with motor equipment was in 1913. It was manufactured by Good Roads Machinery in Kennett Square, PA. and was designed to meet the exacting requirements outlined by engineers of the New York City Street Cleaning Bureau. Good Roads is therefore unofficially credited as the originator of the modern snow plow, though their horse drawn steel blade road graders were used to clear roads of snow as early as the company's founding in 1878 under their original name American Road Machinery. Good Roads patented the first four-wheel grader in 1889 thus making it the first pull grading apparatus patented in the United States. Unlike most early snow plow manufacturers, Good Roads continues to manufacture snow removal equipment today under the name Good Roads Godwin, now located in Dunn, North Carolina. In the early 1920s Good Roads often advertised in The American City magazine that "...three out of every four snow plows in use throughout the whole United States are Good Roads Champions." By the mid-1920s Good Roads was manufacturing snow plows of various shapes and sizes for use on a wide variety of motorized equipment. Other snow plow manufactures began to follow suit as motorized plows were proven more efficient than other methods of snow removal. Carl Frink of Clayton, New York, USA was also an early manufacturer of truck-mounted snowplows. His company, Frink Snowplows, now Frink-America, was founded by some accounts as early as 1920. For the winter of 1919, Carl H. Frink, owner of a tire and machine shop in Clayton (New York), manufactured and equipped a bus with a steel V-blade snowplow for Fred I. Dailey's Clayton to Watertown bus line. In 1920, Frink equipped a Linn halftrack with a snowplow and side-blades for F.W. Carpenter's Black River Bus Lines and started his snowplow business. The Linn Co. immediately started to equip their halftracks with snowplow and heavily promoted their superior traction; they dominated the eastern market until the 30s when the halftracks were supplanted by the much faster four-wheel drive trucks. In 1923, the brothers Hans and Even Øveraasen of Norway constructed an early snowplow for use on cars. This proved to be the start of