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INDUSTRIAL DEVELOPMENT.

This morning one of Duthie and Co.'a four-horec waggons passed through the City with a load of machinery for M. Donaghy and Co.'s Rope Works at South lJanediu. Knowing that the history of this important piece of mechanism would be interesting to our readers, as well as affording indication of a steady and decided onward progress in our native industries, a visit was paid to the foundry and engine works of Messrs Kincaid, M'Queen, and Co., Great King street, where, in the absence of Mr M'Queen, full particulars were given willingly by Mr A. J. Burns (the representative of the firm) and Mr M'Laren (manager), It is found that the system of belting for driving purposes of machinery is beiDg superseded by rope, and for carrying out this idea a contract was entered into with the Rope Works Company Borne months since to turn out the wheels to be now described, which were fabricated and finished complete and without a flaw at this foundry. Tho largest of the wheels, which is 9ft Cin in diameter, is a casting of four tons in weight, which, after being satisfactorily run into the mould and allowed to cool down, was then raised and placed in the double clinch lathe, having a diameter of 12ft. Hero the rough casting was screwed and bolted in an immovable pesi tion set perfectly true in every respect, and the necessary tools being placed in position, tho huge mass turned slowly round, the rim, which is 24iu in length, being first operated on. On this rim nine grooves were cut out with the greatest nicety, each of which is made for a 6{in rope to move in, and in its revolution conveys a force equal to 200 horse-power. The boring for the shaft was also a work demanding the greatest care and exactness, as a slight deviation from mathematical precision would render the whole labor useless. Nearly one month has been occupied in thus doing the mechanical work to the casting, and certainly on its being brought to perfect completion a heavy responsibility was removed from tho shoulders of all concerned. Thero ;vcro also two smaller wheels of 4ft diamctor with 12in rims and four grooves each. The larger of the wheels claims to bo the biggest ever turned out in New Zealand in one piece. Certaiuly the same firm made a large one of the same sort for the Mosgiel Factory, but it was cast iu two pieces and then welded together. The firm havo another heavy job in hand at present—a double throw crank Bhaft for a Wellington house. It shows the position of the iron trade in Dunedin when a heavy pieco of work like this comes across the Strait to bo prepared. Another very important work on hand and nearing completion is the large dredger to work the beach at Westport for gold, and whjch was all prepared at Dunedin, and is being put together at the place where she is to work. This dredge is contracted to life 100 tons of stuff per hour, but is expected to be able to do quite twice this quantity. Everything is of steel in her construction, and, excepting the raw material, was all produced at theso works. The firm have made dredges a specialty, and the whole of those gold digging in the Clutha were turned out here. Although trade has been dull enough for some time back, symptoms of improvement are now being felt, and, provided plenty of work comes to hand, tho Vulcan Foundry will maintain the reputation it has already gained for works such as these dredges ; the powerful crauo for the Oamaru breakwater ; the different steamers built, which one and all testify to tho character of the work turned out as being of first order of merit, both in style, finish, ond for endurance,

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https://paperspast.natlib.govt.nz/newspapers/ESD18890627.2.10

Bibliographic details

INDUSTRIAL DEVELOPMENT., Issue 7944, 27 June 1889

Word Count
644

INDUSTRIAL DEVELOPMENT. Issue 7944, 27 June 1889

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