In THIS fettling topic earlier today I identified the primary challenge as that of removing the ingrained grime without destroying any underlying patina. A couple of hours’ work on the cleaning and in addition, installing a new filler cap washer, servicing the burner and jet (moderate de-coking and new heat-proof washers), new pump washer, replaced non-return valve ‘pip’ seal and I was happy with the outcome … … from this. In the fettling thread I agreed with @igh371 that the cut-off pot rests/legs were likely to indicate that the Primus had been used to heat up an oven, as this British 2-pinter was adapted to power a Clyde Cooker. Luckily, I have an old school-issue tripod such as would be used in conjunction with a bunsen burner and more fortunate still, it pairs up with the Primus perfectly. Replacing the stumpy legs is no longer a pressing need and the stove/tripod combination is a practical alternative, maintaining the stove’s originality without the addition of reproduction pot rests. With Thompson and Ritchie kettle of similar vintage. A closer view of the inscriptions. Pump tube cap, ‘FW Lindqvist Patent’ inscription. The NRV has the characteristics of the era, a more rounded end (tank-side) and larger air outlet holes than in later examples. The pump action: ‘pull’ stroke. ‘Push’ (compression) stroke. The non-movable components, a fixed brass stop and a leather sealing washer. Note the flat formed on the shaft to create an air transfer passage during the ‘pull’ stroke. John
