This booklet cropped up in my ebay feed. Seems to be produced by the Automatic Washer Company of Newton IA. See Page 6 for details of how the agitator and be used upside down. Note: This is a US listing, not UK.
https://www.ebay.co.uk/itm/25317709...lp:2332490&itmmeta=01J8F7PGAJW7CG5HS356DQH6XE
https://www.ebay.co.uk/itm/25317709...88eb2&pid=101196&rk=1&rkt=12&sd=166923230942&
https://www.ebay.co.uk/itm/25317709...lp:2332490&itmmeta=01J8F7PGAJW7CG5HS356DQH6XE
https://www.ebay.co.uk/itm/25317709...88eb2&pid=101196&rk=1&rkt=12&sd=166923230942&
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