CyberJack has written previously about this Lawnmower Attachment in the Curios and Stories Forum,
Mowers � The Odd Inventions.
HereI would like to add a couple of comments.
As stated in the clipping this attachment was invented by Albert Edward Young of Christchurch, New Zealand and George Gordon Holmes, Jun. of Pigeon Bay, Banks Peninsula, New Zealand.
A patent was filed on the 19th December 1910, NZ patent number 28910 granted and published on 4th May 1911.
CyberJack also mentioned that they were sold in Australia, do we know how successful they were ?