It is very difficult to closely give a date for such a lamp because we have very few document. But Peter B have presented a old catalog from Heeckhout & Foubert in which we can find the lamp, here : http://0flo.com/index.php?threads/10279 the burner here is the first type. We can see the needle's control knob is not at 90 degrees (as it will be in the 20's) but in alignment with the swan neck. we know the patent for this burner have been claimed by Ernest Noel in march 1909. If we consider the delay for getting started the production, perhaps this lamp could have been for sale from 1910. We also know Heeckhout & Foubert have been bought by DBD (Dutrut, Bernier and Desrues) in 1919. I also think that the brass demand for munitions during the war didn't allow to produce such a lamp. Therefore, the production's date certainly is just before the war. This lamp already have been fettled. The plunger in the tank under the swan neck is cut and soldered. We find a added tap/plunger from Liotard factory on the tank. This allows to shut a small gasoline line which have been added/tin soldered under the swan neck. This tap is not usually necessory because the punch on the burner does the trick. But if the punch or his female hole in the burner are worn out, you can't cut properly the fuel without deflate the tank. We also can presume the burner rod is not genuine. this burner is given for 100 CP before the first war. I think the power was increased in the 20's. In fact, the jet and needle I found are 0.20 mm which gives 200/250 CP, but these are certainly been changed since 1910/15. Round globes are usually fitted on these lamps. But we can see tulips in the Heeckhout catalog. Here are some tries. We have not to forget we are in France in the 10's and that, even if it is a workshop lamp, this kind of lamp could have been be in service in a fashion workshop as there was many in Paris.
G'day Michel, another excellent post and nice work. You have shown in France even a workshop lamp had style and beauty .
