is specially valuable on interior work and in enamels. When used alone it hardens the oil film, and on long exposure causes cracking and scaling. Zinc lead is sublimed from zinc load and zinc ores, and contains about equal proportions of zinc oxide and lead sulphate. Leaded zinc is similarly produced, but contains about 75 per cent, zinc oxide. Both are generally slightly off colour, and should be used in paints which are to be tinted. Lithopone, a white pigment produced by precipitating zinc sulphide and barium sulphide, is of great value for interior paints. On exterior work it tends to darken and disintegrate, but when mixed with zinc oxido and whiting it gives very promising results. Crystalline pigments, when ground in oil, become transparent. They include barytes (barium sulphate), silex (silica), whiting (calcium carbonate), gypsum (calcium sulphate), asbestine (silicate of magnesia), and china clay (silicate of alumina), All these strengthen a paint film made of white lead and zinc oxide, and often increase the durability, especially barytes, silica and china clay. Asbestine has ncedle-liko structure and low gravity, prevents settling and acts as a reinforcer of paint films. Whiting or calcium carbonate should be used wheu zinc oxide is in excess in a paint so that
For barns and farm buildings a perfectly satisfactory result can be obtained from properly selected iron oxides or other coloured pigments, with a moderately high percentage or silica, clay and other inert materials. For preserving aud decorating dwellings the basis of the paint should be the expensive white pigments, white load and zinc oxide. WHITE LEAD. Corroded white lead is a basic carbonate of lead. Sublimed white lead is a basic- sulphate of lead, relatively finer than corroded, more liable to * chalk upon exposure to the weather. Corroded white lead, when used alone with linseed oil, tends to chalk considerably in a short time aud to show deep checking, while its alkaline nature affects certain tinting colours, and fades or darkens delicate blues or greens. Both lead pigments take the same amount of oil, spread easily, aud are highly opaque. The risk of lead poisoning is small. ZINC WHITE. Zinc oxide has almost revolutionised the paint industry during the last 10 years. It is made by the oxidation and sublimation of zinc ores. It is extremely fine, of great whiteness, good covering power, although uot so great as lead, tends to produce a glossy surface, and
Yon can set the WITH OVEN ON EITHER RIGHT SIDE OR LEFT SIDE. The construction of a kitchen sometimes makes it better for tlie oven to be on. one side, sometimes on the other. You can get a ZEALANDIA to suit either way. It is the only Range having this variation. Write for catalogue No. 22 telling about this grand Range — the finest cooker in New Zealand. (Opposite Kuox Church). , DUNN AND REDDING, AGENTS.
The Evidence of Success 1 The Year 1913 brings up to this vast number the Total Sales of the . . . RANGE. It ranks to-day as the Most Perfect, Efficient, Economical, Cleanly and Up-to-date Range in the Dominion. Economise the Work in Your Kitchen by Installing, At the beginning of the year, a , . . cfifSfalißfa! The Range with a Reputation.
(Next Ritchie Bros.) For the Wet WeatherMen's Heavy Working Boots, nailed and plain, thoroughly waterproofed. All sizes, 16/6. I am making a speciality of Boys' and Girls' Strong School Boots. All sizes. All prices from 8/- up. RepairsSuperior Workmanship. Best of Leather. No Delay. Men'a Boots Soled and Heeled - - - - 4/6. Ladies' Boots Soled and Heeled - - - - 3/6.
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Bibliographic details
Clutha Leader, Volume XXXIX, Issue 46, 17 January 1913, Page 1
Word Count
590Page 1 Advertisements Column 2 Clutha Leader, Volume XXXIX, Issue 46, 17 January 1913, Page 1
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