HEDSON, TAYLOR: Fishing Reel History & Reference Information, reeLpedia® by Bernard (Bernie) Ladd, 2013.
HEDSON Vintage Multiplying Revolving Drum Fishing Reel History:
The HEDSON Revolving Drum Multiplier is similar in appearance to the Unique Taylor fishing reel, which was the first Australian revolving drum multiplier reel designed and made in Sydney in the mid-1930s by R.R. Taylor Repetition Engineers Pty. Ltd. The maker of the Hedson reel (circa 1949) is unknown, but it is evident that the maker capitalized on the fact that the Unique Taylor design was not patent protected.
Only a limited number of HEDSON reels were produced. These included: the (Hn1) Hedson All-Purpose model; (Hn2) Model No.100, Hedson Super Cast with the plastic revolving drum bearing the Hedson name molded into the spool; (Hn3) Hedson Standard with an aluminum alloy body and spool; (Hn4) Hedson Deluxe version with the body, spool, and gearing cover machined from Aluminum alloy Bar Stock; and (Hn5) Hedson anodized silver aluminum alloy model. HEDSON fishing reels were available with two main spindle bearing options: ball bearings or sleeve (bush) bearings. The multiplying models featured machine-cut gears, a check lever, a non-go back lever to prevent the crank handle from reversing, and a free spool lever for casting with automatic re-engagement of gears upon crank movement.

According to Craig Aitken, Fishing Tackle Guide, 1949, a non-multiplier HEDSON Model No.101 was produced, which was a direct-wind, un-geared version with a check mechanism only.