Crusher

I have not been able to find very much information on the exact layout of the crusher station or how the Tubs where pulled up the slope so below is my interpretation of how it might have been. I believe the water wheel powered whatever pulled them up the incline and must have been controlled their descent as well, so a reversing and neutral device was necessary. This I feel would have been operated by an independant drive from the ring gear rather than from the drive shaft to the Jigger house. From the size and footprint of the timbers that remain and position of the rebates in them the system was I am sure controlled manually although I have incorporated an opening and self closing device under the Tub in the drawing. The length of the rope and its diameter gave the winding drum size, its position was fixed to suit the ring gear and reverse gearing as well as the location of the tub in its final position over the hopper and the facility to reverse it. The platform probably had a slight incline to allow the tubs to start there descent independently back down the slope


	I am waiting for comments from the museum as to the feasibility of the layout or any additional information they have. If anyone has photos or other information on what actually existed or might have existed I would love to hear from you.




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	The crusher frame and bucket elevator at the time of the survey -March 2014




		The 'chat' crusher inside the Jigger house was also used to process any oversize lumps not reduced by the previous crushers bigger than 5/8”(16mm) before entering the Trommels Although jigs separated ore from waste they also produced "chats" - a mixture of ore and waste still not separated. These were barrowed to the chat rolls at the west end of the building for recrushing. An elevator introduced the crushed chats into the trommel at the second drum.