Design and construction of oil engines: with full directions for erecting, testing, installing, running and repairing including descriptions of American and English kerosene oil engines

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Spon & Chamberlain, 1900 - Internal combustion engines - 196 pages

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Page 93 - ... is filled as usual, but also with cold water. The lamp is then placed under the apparatus and kept there during the entire operation. If a very heavy oil is being dealt with, the operation may be commenced with water previously heated to 120, instead of with cold water.
Page 69 - The fulcrum of the mechanism as a whole, the point of attachment to the piston-rod, and the pencil point are always in a straight line. This gives to the pencil point a movement exactly parallel with that of the piston. The movement of the spring throughout its range bears a constant ratio to the force applied and the amount of this movement is multiplied six times at the pencil point. The pencil lever, links and pins are all made of hardened steel ; the latter — slightly tapering — are ground...
Page 92 - The test lamp is then placed in position upon the lid of the cup, the lead line or pendulum, which has been fixed in a convenient position in front of the operator, is set in motion, and the rise of the thermometer in the petroleum cup is watched. When the temperature has reached about 66...
Page 70 - This applies to all indicators numbered above 3737. The tension on the drum spring may be increased or diminished according to the speed of the engine on which the instrument is to be used, as follows : Remove the drum by a straight upward pull; then raise the head of the spring above the square part of the spindle and turn it to the right for more or to the left for less tension, as required ; then replace the head on the spindle. Before attaching the indicator to an engine, be...
Page 73 - Fig. 69 represents the No. 3 planimeter, which differs somewhat in design from the two previously described. It is capable of measuring larger areas, and by means of the adjustable arm, A, giving the results in various denominations of value, such as square decimeters, square feet and square inches; also of giving the average height of an indicator diagram in fortieths of an inch, which makes it a very useful instrument in connection with indicator work. DIRECTIONS FOR MEASURING AN INDICATOR DIAGRAM...
Page 74 - FIG. 370. point, moving it in the direction indicated by the arrow, or that of the hands of a watch, until it returns to the point of beginning. The result may then be read as follows : Suppose we find that the...
Page 92 - ... vessel. The thermometer in the lid of the cup has been adjusted so as to have its bulb just immersed in the liquid, and its position is not under any circumstances to be altered. When the cup has been placed in the proper position the scale of the thermometer faces the operator.
Page 201 - A textbook on the application of the indicator to the ammonia compressor and steam engine, with practical instructions relating to the construction and use of the indicator and reading and computing indicator cards.
Page 69 - The Piston Spring is of unique and ingenious design, being made of a single piece of the finest spring steel wire, wound from the middle into a double coil, the spiral ends of which are screwed into a brass head having four radial wings with spirally drilled holes to receive and hold them securely in place. Adjustment is made by screwing them into the head more or less until exactly the right strength of spring is obtained, when they are there firmly fixed.
Page 93 - ... in the following manner : — The slide is slowly drawn open while the pendulum performs three oscillations, and is closed during the fourth oscillation. NOTE.

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