Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 138,931 pages of information and 225,312 images on early companies, their products and the people who designed and built them.
Of Park Works, Manchester
1870 Advertising domestic sewing machines and machines for manufacturing, of every description 
1875 William Carver advertised as makers of special tools for light engineering purposes. An engraving showed a multi-spindle pillar drilling machine. 
1876 Listed in Slater's Directory of Manchester & Salford, 1876 (Part 2) as William Carver under machine makers and sewing machine makers, tool makers & dealers. Address: Park Works, Park Street, Near Ducie Bridge. The 'Streets' section of the directory gives the location as No. 10 Park Street (the address being shared with Mrs Alice Carver). After No. 10 came Cowburn Street, so we can locate the premises as being on the north side of the street, immediately east of the junction with Cowburn Street. The O.S. map of 1922 shows this to be 200 yards north of Victoria Station.
A small heavy duty lathe in the reserve collection of Manchester's Museum of Science & Industry bears the name Carver, and is assumed to be the product of William Carver. The lathe is unusual in having a wide bed and having the spindle and tailstock centre line offset to accommodate a very broad carriage.