Regarding reply #11 and the patent application from TwiggyTree, I got this info for future ref.
"Gold-saving apparatus: 24718 : 1908; 20th July, Breck, T. M. I identified. I located the following record from archives New Zealand collection:
[Patent Specifications] 1908 - 1908 (R5013653) [Archives Reference: ABPJ 7396 W3835 box148 patent number: 24718]"