THE DAIRY INDUSTRY.

Te Aroha News, Volume VI, Issue 331, 5 January 1889, Page 2

THE DAIRY INDUSTRY.

The following particulars (from the Otigo Witness), respecting the Hoseville Dairy and Condensed Milk Company's Plant will prove ol interest to our readers :—: — T/he condensing room is 70ft by 35ft, In this room are two vacuum pans 16ft long by 4ft wide and 12in deep. These pans are composed of hammered copper, tinned, incased in iron jackets, and will &tind a working pressure of 251b pei square inch* Between the pan and jacket i» fitted a mitre steam coil, containing about 300 square feet of heating surface, for thepurpose of imparting a high temperature to the water surrounding the vacuum pan containing the milk which is intended to be condensed. Beneath the vacuum pan jacket are located two large box steam coils made from special steam tubing, and containing over 1000 ft. The coils pla.y a very important part in the condensing process. Clese to the vacuum pans is a large heating tank about 20ft long by 4ft wide and 3ft deep. This also is fitted with two large mitre steam coils of sufficient capacity for maintaining a boiling point temperature. At the end of the heating tank is a similinr one for cooling purpose*. Near the heating tank, on a raiser! platform, is the receiving vat of GOOgal capacity, and i« fitted with appliances for raiding or lowering the temperature of the milk as may be required. This vat is intended tn receive that part of the milk which is to bo condensed. Milk receiving .md weighing room : The modus operandi is n* follows .* — As ivich pafcron'Muilk is iceeived ;l is examined under the microscope, and if it sUnds tho test and is o£ the proper quality, il is ;it once transmitted through ntintrmjhto the. V.it in the condencin department ; here it remains until it is cooled down to about GOdeg, in order to divert it. of animal h^at and expel tho amin^niacalgases. This beiii" .'U'comj li-Oietl it is run off into oblong cans, holding about Bg<il each. The cans are immediitelv plunged, into the heating vat and heated to a temperature of about l9o<leg ; refined Inn f sua sir is added ami tie-roughly amalgamated with the milk. The amount depends upon the quality and specific cr.ivitv of the milk. It is kep£ in the vat from 20min to 30min then c^iveyed to the vacum pans. The covers are then screwed down and the air exhaunter.s set in motion which aro driven from t^o main shaft by moan* of a belt at the rate of 50Q. rovolutions per minute. The temperature of the Vilk while evaporation is going pn ! being 140deg, air is let in over the steam box coils which are in an enclosed chamber , below the vacuum pans. The air in parsing over the coils is deprived of its moisture and is greatly r.inficd. This ra rifled air is dr.twn over the milk by theexhauster at the rate of 1000 cubic feefc per minute. The ratified air has great affinity for moisture which it readily* absorbs on ite passage over the milk. The evaporation goes ot. so rapidly tbf»t it will reduce the entire bulk by 75 per cent in five hour?. When reduced to that density the faucit is opsned, and the condensed fluid parses through a fine wire stiv.iner into large cans. These cans when filled are earned to the packing tnbles, where their contents are diuwn off into sinnll tin cans holding" lib each Theso are packed in boxes and shipped to market. We may here mention that the plant and method differ entirely from that of other factories in Europe. It has lie ju deigned, ejected, and patented by Mi F. H. Asuury, of DunerHn, and it is claimed that a superior article can be turned out, owing to the large volume of rarified air aerating and absoibingthe ninnioniacul gtiros and animalcule and other impurities, in less than half the, usual time inquired in the vl ordinary way and at a much less cost in fuel and labour. Second : That the first cost is less than a third of the old style oil v.iruum pan plant of the same capacity. The factory is now in full swing, reducing from 700<jal to 80()gal d»ily, and it is tho opinion oH sill connoisseur-: who have sampled the article th.it it is superior, both in Holiness and flavour to the famous Ana la-Swiss Company's milk. The lr.illc when condensed is about the consistency of thick syrup, has a veiy pleasant ta^te, < an,d if used for tea or coffee is not dis* , tingnishable from pure fresh countiy milk. Nono Kut the very pmet>t milk will answer for condensing purposes, so that all has to undergo a close examination under the microscope, and any disease, germ, or adulturation is detected at once and condemned. It will keep good for years, and is always ready for use whan required. 'Hot and cold water is ii> every part of tho building. No bfceiun is wasted ; all tho condensed w;>tor from the vmioun heating coils is made to return to the oniler \xy » system ot pipipp: p-rtt>nj,t><l hy Mr Asbuiy. Thn exhaust stfau'i from the engine is all utilise^ h} 7 a peculiarly constnw tod ooil ior pioduein<£ lioilinir water for the factory nse=, and foi heatings the feed- w.iter to the boilt-r. Gieat nitontion, has boon given to the siuing of fuel and ulilihiritf the fuel consumed to (ha greatest nilvnntage ; ho much so that thfc daily eo^t for tho wl ( iolc +'in'torv does no|f $K±.sed eight BjiiUmgij ii\ch\i^i^ lvvu^a^^