Used by Ettore Alessandri who came to Australia in 1930's. He had land at Marlo and used this jack to clear the property of trees and stumps in 1940's and 1950's. The Trewhella Monkey jack was invented by the Trewhella brothers to help land clearance in Australia during the 1880's. Two jacks were made a 5 ton and a 10 ton. This item is a 10 ton model having two extension bars. The longer spear is used for larger tree work and the smaller spear for general work and small trees. Both models had two lifting claws at different heights. Th lower claw was useful for roots. The top claw was intended for going under loads and the bottom claw used for rolling timber. In 1929 the cost of the 10 ton model was thirteen pounds ten shillings.This item is an example of the machinery used by the early settlers to clear land. A 10 ton monkey jack. It has two extensions (spears) and two lifting claws. It has a detachable handle. 2033.1 is the main jack. 2033.2 is the handle. 2033.3 is the shorter extension and 2033.4 is the longer extension.On extension - BRITISH STEEL On main section - 10 TON MONKEY JACK PATENTED 1411-50 AUGUST 04 1412-50 AUGUST -05 ?????? JUL -06 12104-20 JUL-08 Trewalla Bros Trentham Vicrural monkey-jack trewhella agriculture machinery

Series of nine black and white photographs (two copies of each) of training tram recovery staff in rerailing trams. Not taken all the same time, as trams very. Most photos taken at South Melbourne Depot. 1 - tram 945 being lifted by two portable lifting jacks. - has ES&A bank and Champion spark plugs ads on the front of the tram. 2 - tram body being winched with a chain attached to the bogie - tram 897 - has a Schweppes advert on side panel. 3 - tram bogie being jacked or pushed with a Trewalla jack on a greased plate. 4 - tram 897 being slewed with a Trewalla jack - has "Nu-Dutch cleaning" cleaning advert on front panel and a Schweppes Soda Water advert on side panel. 5 - Fred turner working the winch slewing a tram on greased plates - tram has a "Snappy Panties" advert on a side panel. 6 - tram being slewed with a Trewalla jack and greased plate - has a Metters stove advert on side panel. 7 - photo showing greased plate in position under a wheel.trams, tramways, derailments, accidents, south melbourne depot, recovery, tram 945, tram 897, sw6 class, mmtb, r10 vehicle