Pressure Lamps International

Aktiebolaget Eskilstuna Separator

Eskilstuna, a town of about 89 000 inhabitants, is situated close to Lake Mälaren about 100 kilometres west of Stockholm in Sweden. The town has an interesting history. Eskilstuna was well-known as a flourishing industrial town as early as the 17th century. King Karl X Gustav founded the Rademacher Forges in 1650 when he asked Reinhold Rademacher, a master smith, to manage the forges. AES is one company that developed from this industrial metalworking background.

Carl Gustav Patrik de Laval (1845-1913) was an engineer from a French family that had settled in Sweden. De Laval was a prolific inventor who had ideas in almost every field of engineering, but he is best known for his work in milk production and the separation of cream from milk. Gustav de Laval’s most important invention was the first continuous milk separator, in 1878. Just before, in 1877, de Laval entered into an agreement with Oscar Lamm, proprietor of a small engineering company, and in 1883, following considerable success, the firm became "incorporated" (a limited company) and took the name Aktiebolaget Eskilstuna Separator, with Lamm acting as Board Chairman and Managing Director. Within 10 years they employed over 100 engineers developing more of de Laval's ideas.

gdl 01 Gustav de Laval

The names E.G.Jordan and C.A.Wester are mentioned in 1900, and Hugo Lindeberg became one of the directors in 1902. The name Hugo Lindeberg is also associated with Aktiebolaget Punker, a manufacturer known for pressure stoves.

In 1903, AES were working from the address 11 vid Gräns-och Noachg, Eskilstuna, Sweden. The company also made a range of incandescent lamps and lights from 250 to 6000 cp light output. They produced both system lighting and free standing lamps marketed under the brand name Rex Lampan. Patents from 1909 suggest Carl Andersson was a leading design engineer with AES.

Information is rather scarce, but we do know that the range included at least 5 models in 1911, at a time when lighting developments were progressing at a very rapid rate. The picture below shows a donut style lantern typical of the period

. rex 01

Extract from 1911 Rex catalogue

The last historic reference I can find to AES is dated 1921, but at some time after this the company name changed, I believe in 1963. The history of the eventual parent group Alfa Laval AB is rather complex, and the name changed to Tetra Laval after it was bought by Tetra Pak in 1990, but then was re-established on the stock exchange in 2002.


If you can read old Estonian - here is some more information: I've worked my way through this, but if anyone wants to have a go - please do, and let me know if I got it wrong !!

Gustaf de Laval (1845–1913) alustas 1872. aastal pärast töötamist erinevates ametites ning õpinguid Rootsis ja Saksamaal tööd koorelahutaja kallal, millest sai üks tema tulevastest tähtsamatest leiutistest. Esimene mudel patenteeriti 1878 ning 1883 loodi seadme tootmiseks ja ekspordiks ettevõte AB Separator (tänapäeval Tetra Laval). Ta konstrueeris ka lüpsimasina, kuid tema teiseks suureks avastuseks oli 1892. aastal valminud üheastmeline aktiivauruturbiin.



Aktiebolaget Eskilstuna Separator (1911) Catalogue pages for Rex Lampen. Courtesy of Bo Ryman, and an original copy in the Stockholm Technical Museum.

Alfa Laval (2002) Company History.

Asplund - Ann-Marie (2003) - Personal Communication

Rootsi Instituudi Väljaannem (2001) Klassifikatsioon: EST 91 a P:k

The Hutchinson Dictionary of Scientific Biography, (1994) Helicon Publishing Ltd., Oxford.

Uppfinnare och företag (2002) Comenius 1 project.


Links to other sites

Links to other sites - this page is desperately in need of an update! It's coming soon, but in the meantime here are a few of the best internet sites for lamp collectors.   David Greenwood - a knowledgeable and friendly collector is at    Currently off-line Fil Graf has one of the original reference sites at Juan has a good site for Focus and Petromax at ...

Lamps for Sale

 If you have a lamp or lantern for sale you can advertise it here, free of charge. Just send a couple of photos and your location details. There are no hidden costs, I'll just pass on any inquiries and then you arrange the sale yourself. To avoid problems it's much better that buyer and seller arrange to meet and agree the sale, as I can't be responsible for lost packages or failed payments! If you can't meet, then always use shipping methods with signed-for delivery. ************** ...


This is where you can display a photo of a pressure lamp spotted in an unexpected place. (Actually, some places might be expected, so send the photos in anyway)   A couple of Petromax lanterns in amongst the baking produce at Smith's Farm Shop, Chapel Brampton Rushden Railway Museum, Sept 2016 The lamp collection at Rushden, no BR49 there!                    x

United Factories

Pressure Lamps International United Factories Co (Kansas City) 1316 1330 1332 1385 McGee Street, Kansas City (1908)1028 Wyandotte Street, Kansas City (1909)1841 Factory Building, Kansas City (1909)809 & 1043 Factory Building, Kansas City (1909)404 Goden & Keppel Building, Kansas   The North Carolina Advocate of 23 January 1908 describes (on p7) a new way for manufacturers to get their goods into the hands of consumers without "burdensome profits being tacked on by jobbers, ...

Foote Mfg

Pressure Lamps International Foote Mfg CoLiberty Lamp Co Dayton, Ohio, USA   It appears that the Foote Manufacturing Co operated out of Dayton, Ohio for only a relatively short time. Terry Marsh shows several of their lamps on his web site, and reports that the company existed from 1908 to 1917. You can see these at this location: Terry Marsh US Lamp Manufacturers A - F.   The earliest advertisements seem to be around 1908/9, then they continue for several years, when one ...