1854 Partnership - Baldock leaves. '....the Partnership between the undersigned, William Alltoft Summers, Charles Arthur Day, and William Baldock, in the trades or businesses of Engineers, Millwrights, Ironfounders, and General Dealers, at Northam, in the parish of Saint Mary, in the town and county of the town of Southampton, and elsewhere, under the firm of Summers, Day, and Baldock, was this day dissolved by mutual consent, to take effect as on and from the 31st day of May last; and in future the said trades or businesses will be carried on by the said William Alltoft Summers and Charles Arthur Day, on their own joint account...'[1]
1859 Summers leave the partnership. '...the Partnership between the undersigned, William Alltoft Summers and Charles Arthur Day, in the trades or businesses of Engineers, Millwrights, Ironfounders, Iron Ship Builders, and General Dealers, at Northam, in the parish of Saint Mary, in the town and county of the town of Southampton, and elsewhere, under the firm of Summers and Day, was this day dissolved by mutual consent, to take effect as on and from the 10th day of February last; and in future the said trades or businesses will be carried on by the said Charles Arthur Day, on his own separate account,...'[2]
Became C. A. Day and Co
c.1868 Mr. Altoft Summers retired
1871 Thomas Summers became a partner with Charles Arthur Day and the firm became Day, Summers and Co; the company developed compound steam engines which became a main line of its business.