width of the character. This wedge makes the same movement as the diecase with the matrices, in one direction. The matrices are ordered in the diecase, each row has only matrices for characters of the same width. The wedge controls the opening in the mould. Compressed air was used to control the movements of the matrices above the mould of the machine. This machine was capable to produce filled lines, by controlling the width of the spaces, with two extra wedges. The accuracy of the machine was 2,000 parts in 1 inch. The first commercial machines were available around 1897. These machines had only room for 132 matrices. A few of these machines were sent to England. Later types had die-cases with 15*15 and 17*15 or even 16*17 matrices. References 1844 births 1913 deaths 19th-century American inventors People from Troy, Ohio Burials at Oak Hill Cemetery (Washington, D.C.)