Reports and Awards Volume 1-3

Reports and Awards Volume 1-3

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1877 edition. Excerpt: the oil tank, as it is delivered with the oil to the flame and there bumed. 8. The quantity of light is not diminished by oscillation, jarring, or removal from place to place. 9. By photometric test we find it to operate most effectively at seventeen-candle power; it will undoubtedly maintain fifteen-candle power for nearly twelve hours. 10. Both in original cost and daily use it is undoubtedly a gain in economy in lamp service of its character. 11. The tenacity of the flame is very superior, it being very difficult to extinguish except in the regular way. 12. Its air passages are kept clear by the overflow of the surplus of oil, which is delivered to the flame and flows back into the tank. 13. For railway use especially, ships' use, and all places requiring a powerful lamp at small cost, this must prove an advantage of the greatest value. 118. J. W. Bartlett, New York, N. Y., U. S. IMPROVED STREET LAMPS. Report.--Commended for the following reasons: 1. They are correctly-reflecting street lamps. 2. They diffuse the light. 3. Their shape offers graceful proportions, with great powers of resisting breakage. 4. They are easily cleaned. 5. They are economical. 6. The arrangement for the attachment of street names is convenient. 7. They are of thorough workmanship throughout. 119. Keen & Hagerty, Baltimore, Md., U. S. Hagerty's Patent Street Lamps. Report.--Commended for the following reasons: 1. They are simple in construction. 2. They diffuse the light readily. 3. By the hinge top the removal of the globe for cleansing is made remarkably easy 4. They are of general good workmanship and strength. 120. Williams, Page, & Co., Boston, Mass., U. S. RAILWAY AND STEAMSHIP LAMPS. Report.--Car lamps. They have special adjustment for safety, ...
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Product details

  • Paperback | 200 pages
  • 189 x 246 x 11mm | 367g
  • United States
  • English
  • black & white illustrations
  • 123650531X
  • 9781236505316