Model Making; Including Workshop Practice, Design and Construction of Models, a Practical Treatise for the Amateur and Professional Mechanic

Model Making; Including Workshop Practice, Design and Construction of Models, a Practical Treatise for the Amateur and Professional Mechanic

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Description

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. 1919 edition. Excerpt: ...with piston rings, and these are an absolute necessity with the high pressure employed. Each piston has two piston rings. A hole is drilled completely through the top of the pistons to accommodate the wrist pin, which is a small piece of cold roll steel rod of the proper size. The ends of the wrist pin are filed to conform with the internal outline of the cylinder and finished off smoothly so that they will not scratch the cylinder walls. The small brass bevel gear which drives the valve shaft is drilled and pinned to the crankshaft. Very little strain in actual operation makes it unnecessary to key Fig. 168--The engine, showing the hand water pump and the oil pump this member to the crankshaft. A small universal joint is placed on the crankshaft just back of the bevel gear and this is also pinned into place with as heavy a pin as the quarter-inch shaft will allow. Owing to the fact that this universal joint forms the connection with the propeller shaft, it has to hold up under considerable force, as nearly "a horse-power of energy is transmitted to the' propeller when the boat is at high speed. This method of fixing the universal joint to the crankshaft is open to criticism, but in the case of the "Elmara" the trouble experi enced with it has been exceedingly small in comparison with the trouble had from other sources. The universal joint used is made by the Boston Gear Works and is the smallest stock joint made by these people. A very special method was employed to hold the flywheel on the crankshaft. The spur gear on the end of the shaft which meshes with the larger pump gear is soldered to a sleeve and the flywheel is drilled out and reamed so that this sleeve will pass into the hole in the flywheel with a driving fit. The...show more

Product details

  • Paperback | 100 pages
  • 188.98 x 246.13 x 5.33mm | 195.04g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • Illustrations, black and white
  • 1236487850
  • 9781236487858