Historical information

In 1797, German inventor August von Marquardt created the precursor to a blowtorch, consisting of a simple oil lamp (wick flame)
with a tube to direct air into the flame. Swedish engineer Carl Richard Nyberg invented the modern blowtorch and secured a patent for it in 1881.Among other things his design introduced a pressurised, more efficient system.
Blowtorches were widely used by plumbers, tinsmiths and mechanics for soldering, brazing, and heating metal parts.
This blowtorch was made by the Swedish company Primus (B.A. Hjorth & Co.), which built on the original design on Nyberg and was one of the earliest and leading manufacturers of portable fuel appliances. The letter “S” stamped on the tank base indicates that this particular blowtorch was likely manufactured around 1930.

Physical description

The cylindrical tank is made of brass and has a metal handle, stamped with “Primus No 632”. A narrow burner tube rises to a nozzle, with a small hook near its base. It includes moving parts such as a hand pump, control valve, and filler cap for operation.

Inscriptions & markings

On Handle
"PRIMUS/No. 632"
On Control Value
"PRIMUS"
On Filler Cap
"COMPANION"
On Tank
“A/B B.A. HJORTH & CO STOCKHOLM, SWEDEN/Sole makers of the genuine Primus apparatus/Alleinfabrikanten der Original Primus Apparate/Seuls fabricants des veritables appareils Primus/Unicos fabricantes de los legitimos aparatos Primus/TRADE MARK PRIMUS”
"S"