From Ken Cope's American Wrench Makers 1830 -1930, 2nd Edition comes this:
"H. and E. Wrench Co., New Bedford, MA
Operated by E. J. Evans and G. E. Hemphill who had previously been associated with the UNIVERSAL TOOL CO., Salt Lake City, UT. The firm made HandE quick adjusting nut wrenches (Schulz #496) patented September 20, 1921 by Evans and Hemphill and HandE quick-adjusting pipe wrenches (Schulz #675), patented March 27, 1923 by Evans and Hemphill."