Joseph O. Colladay began manufacturing woodworking and iron-working machinery in 1867; he operated under his own name. At some point the name became
Jos. O. Colladay & Bros. (There appears to have been a time during which both names were used.) By 1919 the name had changed to
Jos. O. Colladay Co., Inc. In that year the business was purchased by Lawrence C. Power, who changed the name to
Colladay Machine Works. The assets of this firm were reportedly acquired by the
B. M. Root Co. at some point. Power had founded L. Power & Co., but had left the firm.
From Vintage Machinery