PASTEURISATION.

Stratford Evening Post, Volume XXXIV, Issue 16, 11 September 1912, Page 7

PASTEURISATION.

An invention which is likely to come into prominence in connection with the dairy industry in Air Ernest Fergusson’s pasteuriser, which has recently been tested at the Waverley Co-operative Factory with highly satisfactory results. Mr Fergusson has for some time past been in charge of the Westholm skimming station, and the invention speaks volumes for the technical skill aiid ingenuity of tho young inventor.'.. The pasteuriser is regarded by those competent to judge as one of the most'■simple, yet most effective, on the market. It occupies a small space, another of its advantages being the ease with which it may be cleaned. The principle is as follows : The skim milk or whey is run or pumped into a pipe, high enough to carry it by gravitation to the top of the pasteurising Cyh'ilder. It is then carried in the pipe to the bottom of the cylinder which is, corrugated, and as mentioned, gravitation forces it up to the top. In the centre of the cylinder is a closed cylinder which serves to fill up the centre of the large cylinder, so that tlio milk or whey is confined to a space 2i to 3 inches wide between the two. When the fluid reaches the top it is run into a pipe which carries it down to the bottom again. Here steam is admitted by a most ingenious device, and the steam, in addition to heating the whey, is used to force it to the top again. At the top it flows on to the lid of the cylinder and then runs down the/ outside of it, over the corrugations, into the basin at the bottom, and is then carried away, pasteurised, to the holding tank. The idea of carrying the whey up and down so many times is this: As it rises cold inside the cylinder, it is running down the outside hot, thus the cold whey inside gets the benefit of the heat as it nears the top, while the hot whey is cooled as it reaches the bottom. This means that steam is conserved. In the test at the Waverley Co-op-erative Factory the pasteuriser put through GOO gallons per hour (states the Patea Press). It is practically imperishable, being made of tinned copper, the unions being of brass. Mr Fergusson has now placed his invention on the market at a very successful figure.