Proceedings Volume 45

Proceedings Volume 45

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 edition. Excerpt: ... Valentine Varnish company, Mr. L. V. Pulsifer, who has agreed to give us a demonstration. ESSAY BY MR. PULSIFER. Mr. Chairman and Gentlemen: The challenge to varnish manufacturers, which I am here to answer, came as a distinct surprise to Valentine & company, for 10 years ago we had produced in our laboratories a varnish, which answered the conditions of this challenge perfectly. I refer to Valspar, and in the seven years since its manufacture on a commercial scale was perfected, our New York plant has turned out in the neighborhood of one million and a half gallons of this absolutely waterproof varnish. This explains the surprise with which we read the challenge to varnish manufacturers to produce a varnish, which would not whiten under the "sweating" of locomotive tanks. To make clear what this whitening of varnish is, and to explain how we finally overcame it, let us go back a dozen years or so and approach this problem as we approached it then. The production of a varnish, which would not turn white when exposed to moisture or the direct action of water, had been one of the chief problems of the varnish industry from its very beginning up to the time of the invention and perfection of Valspar. By most varnish makers it was considered impossible and it was partly this very general belief, that it could not be done, that led us to attempt the solution of this centuries old puzzle. The first step was, of course, to formulate a theory of why all varnishes turned white, and why some turned white more quickly and completely than others. The experiments on which we finally based our theory and our line of investigations covered several hundred different varnishes of our own and other makes. They showed first, that there were...show more

Product details

  • Paperback
  • 189 x 246 x 3mm | 100g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236823966
  • 9781236823960