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  #1  
Old 15-08-08, 12:42
Darren Witty Darren Witty is offline
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Default Tank Jack

I recently bought a couple of these and was told they were WW2 tank jacks?
Do anyone know anything about them? Some have 22 1/2 ton and the other 15 ton.

JOPLIN
22 1/2 ton
MK II
1942
AUSTRALIA

Thanks
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Darren WITTY
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1941 LP2A Carrier
1942 WILLYS Slat grill Jeep
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  #2  
Old 27-03-18, 04:12
motto motto is offline
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I have an identical jack to the one pictured that I bought from Uptons Engineering many years ago. They referred to it as being a railway jack. I have no other information.

David
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  #3  
Old 30-03-18, 16:19
Lauren Child Lauren Child is offline
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Its a Jack, Lifting, Hydraulic (22 1/2 tons) Mk.2 for use with heavy tractors and ARVs. It’s part of the general recovery apparatus. Nice find
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Old 30-03-18, 21:03
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Niels V Niels V is offline
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How did it function, like the German “coffee mill”?
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1941 Chevrolet, Cab 12 CGT, 7A2 body
1944 Ariel W/NG
1944 Scammell Pioneer SV/2S x 2
1955 Austin Champ, 04BF45
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Old 31-03-18, 02:38
motto motto is offline
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I'm not familiar with the German 'coffee mill' so cannot compare features, design or function.
On these jacks the square upper section is the oil reservoir and also contains the pump. A square shaft sticks out one side of this section and the handle which is about three feet long slips onto this for pump operation. Below this shaft is the valve for lowering the jack.

David

Correction:- the jack I have is 15 ton not 22.5 as the one in the photograph.
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Old 31-03-18, 07:35
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Niels V Niels V is offline
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Thank for the description, well it is different then. This is the type I mentioned. Which is just gears and a threaded rod
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1941 Chevrolet, Cab 12 CGT, 7A2 body
1944 Ariel W/NG
1944 Scammell Pioneer SV/2S x 2
1955 Austin Champ, 04BF45
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  #7  
Old 02-04-18, 00:47
Lauren Child Lauren Child is offline
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The 15ton isn’t listed in the recovery manual. It jumps from 10 to 22 1/2 tons, with different designs. They probably had other uses though, like the railways.

Interesting, it used engine oil (10HD) rather than hydraulic oil.
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