File:Engineer-Graham-demostrates-the-built-in-generator-in-a-charcoal-powered-truck-391833367378.jpg

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Svenska: Ingenjör Henry Graham (t. h.) demonstrerar den inbyggda generatorn i en träkolsdriven lastbil.
Sju stycken mörkgrå Volvo 3-tons lastbilar stodo på måndagsmiddagen uppställda utanför Artillerigården i väntan på att överlämnas till armén, som sammanlagt beställt 16 stycken sådana bilar. De sågo ut som vanliga lastbilar, men de voro träkolsdrivna, d.v.s. monterade med s. k. Gragasgeneratorer, levererade av AB Graham-Lundqvist. Bränslet består alltså av träkol och de 90 hästkrafter starka motorerna dra lika nånga kilo kol som en vanlig bil drar liter bensin. Dessa bilar ställa sig därför mellan 50 och 70 procent billigare i drift än bensindrivna bilar, och de nackdelar, som tidigare funnits hos träkolsgeneratorerna är numera eliminerade. Bland annat ha Gragasgeneratorerna ett filter, som gör träkolsgasen fullständigt ren och kommer den att sota mindre än bensin eller bentyl. Betydelsen av att ha en stor vagnpark av träkolsdrivna lastbilar i krigstid, då det flytande motorbränsle blir mycket svåråtkomligt, ligger i öppen dag. Därtill kommer den rent ekonomisk vinsten, som kan beräknas till omkring 1,300 kronor för 5,000 mils körning med en 3-tons lastbil.
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Source IMS Vintage Photos
Author Unknown photographer
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Public domain
This Swedish photograph is in the public domain in Sweden because one of the following applies:
  • The photograph does not reach the Swedish threshold of originality (common for snapshots and journalistic photos) and was created before 1 January 1974 (SFS 1960:729, § 49a).
  • The photograph was published anonymously before 1 January 1954 and the author did not reveal their identity during the following 70 years (SFS 1960:729, § 44).

For photos in the first category created before 1969, also {{PD-1996}} usually applies. For photos in the second category published before 1929, also {{PD-US-expired}} usually applies.

If the photographer died before 1954, {{PD-old-70}} should be used instead of this tag. If the author died before 1926, also {{PD-1996}} usually applies.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).

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current21:52, 9 January 2021Thumbnail for version as of 21:52, 9 January 2021865 × 938 (198 KB)Esquilo (talk | contribs){{Information |description = {{sv|''Ingenjör Graham (t. h.) demonstrerar den inbyggda generatorn i en träkolsdriven lastbil.''}} |date = 1939-09-21 |source = IMS Vintage Photos |author = {{unknown photographer}} |permission = {{PD-Sweden-photo}} |other versions = }} Category:1939 Volvo trucks Category:Volvo military trucks Category:Wood-gas-powered trucks Category:Photos from IMS Vintage Photos

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