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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Criticisms of the single and double screw Millenium Jack.

Identifier  ExFiles\Box 10\6\  06-page09
Date  24th April 1913
  
X659

AW/SH7/L24413

Re Millenium Jack. - X.390

Mr Johnson 24-4-13

In reply to your memo dated 19/4/13 in which you ask for a criticism of the Millenium Jack, Mr Spinney informs us that the single screw Millenium Jack is too short for our back axles unless used with a brick or block.

The double screw design is :-
(1) Weak and the screws get bent.
(2) Its unprotected screws may get wedged with dirt.
(3) It is rather slow to use.
(4) Some at least of the Millenium Jacks require both hands to start them. This is very awkward especially in the case of raising a back wheel, where it necessitates the operator kneeling on the ground to reach under the petrol tank.

He adds that there are by the way very few Jacks on the market without the above faults.

Mr Platford tells us that they
  
  


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