In 1856 C. G. Harrington, William H. Harrington, and Jonas Heald bought the assets of the highly successful tool maker T. H. Witherby, which they operated as Harrington, Heald & Co.. Included in their new product line was a Gould pattern mortising machine. The business failed in November 1859 but re-emerged as T. H. Witherby Tool Co. We do not know if the Gould pattern mortiser was manufactured under this name.

Detail from advertisement in "The Heart of the Commonwealth, or, Worcester As It Is", 1856

Information Sources

• Thanks to correspondent David LaRue, who alerted us to this maker and pointed us to a useful web page on T. H. Witherby that had information on Harrington, Heald & Co. as well.
• The Heart of the Commonwealth, or, Worcester As It Is, by Henry Jenkins Howland, 1856, carried a full-page ad for this firm that includes an illustration of a mortising machine that is very clearly a Gould pattern machine. These machines were made for many years by various firms and this is one of the earliest appearances of this mortiser that can be definitely dated.
• The 1859 Monthly Law Reporter reports that on 1858-11-08, C. G. Harrington, William H. Harrington and Jonas Heald, doing business as Harrington, Heald & Co., had filed for insolvency.