Hi Neil,i would say it maybe 30s or 40s but only a guess by the victoria 4 figure phone number , i am waiting for Brian AKA Fay to do some homework as we know he likes a challenge.
Not wishing to disappoint
Tried looking to see if I could find anything reference the patent number 181559, but no luck.
I then tried looking at "Mansion Motor Company Ltd" and the only reference I could find is in Flight Global Archives" and is Dated March 27 1919. and is as follows.
" Under agreement with R.W.H.Kane, S.S. Sadgrove, The Mansions Motor Co Ltd & A.C.Hyatt, Exporters,Importers,Shipowners, Carrier, Manufacturer of and Dealers in Aircraft, motor Cars etc, First Directors R.W.H.Kane & C.W.Sadgrove."
I then had a look on Multimap at the Address, 78 Petty France Westminster, and it looks like a lot of it might have been destroyed in WW2 and rebuilt after the war.
My feelings are that this tool was made somewhere around the 1920's going by the above, and the style of the instructions.
As to it's use I would say that Neil is probably right.
finally they are not listed in the British Motor Manufacturers 1894-1960.
Perhaps if someone in London is near the "Metropolitan Archives" they could have a look and see if they have anything on them.
Brian
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