Marine Engineer and Naval Architect Volume 3-4

Marine Engineer and Naval Architect Volume 3-4

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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. 1882 edition. Excerpt: ...for making joints, the board can be easily cut into any required form, its chief advantage being the facility with which a joint can be made and unmade, practically any number of times. As gas checks for signal rockets it has quite superseded ebonite and ivory, which used to crack and split, the pressure on its base at moment of ignition being as much as 3 tons per square inch, the cartridges or cells are also made of the same material. One of its latest adaptations is its use as a drop curtain for Covent Garden Theatre, to be used in case of fire, to which it is impervious; it is worked by an Asbestos rope, both being woven from the raw material. As an insulator of electricity it is not surpassed, and it is used largely as a flooring round dynamio machines, as a covering for electro shunts where great heat is developed, as an insulator between the successive coils of wire on armatures, trays for catching the hot carbon ash from electric lamps, &c. Although its use is so widely diffused, there is no doubt but that as science progresses still further, uses will be found for this most wonderful of nature's products. M. A. BROSSARD, Swansea, exhibited a rotary engine. This engine is comprised of two cylinders, one enclosing the other, and a main shaft carrying a piston. The ports of the outer cylinder for-the ingress and egress of the steam are situated at the bottom. The second cylinder, being of less diameter, is placed eccentrically within the outer cylinder, but being longer than the outer cylinder its ends work in grooves in the covers of the same. These grooves touch the bottom of the outer cylinder, and clear the upper side of the shaft on which the piston is mounted, thus permitting the small cylinder to turn under the impulse more

Product details

  • Paperback
  • 189 x 246 x 36mm | 1,229g
  • United States
  • English
  • black & white illustrations
  • 1236885120
  • 9781236885128