Line or Corner Blocks

W. Rose patent line block

Line blocks, also called corner blocks, have been made in a variety of shapes and materials including wood, aluminum, steel, iron, and plastic. The cast aluminum line block below was made by United Builders of Muskegon, Michigan. W. Rose made cast iron corner blocks, on page 24 of their 1929 catalog. The Rose tools were invented by Daniel Lee (1880-1944), an Irish-born bricklayer in nearby Chester, PA, who received US Patent 1066926 on 8 July, 1913.

For a short article on line pins with advertising, Collecting Mason's Line Pins.

United Builders line block