One Thousand Pointers for Machinists & Engineers

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Griffin & Winters, 1897 - Locomotive engineering - 342 pages
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Page 189 - ... 3. The heater cock can be worked from the cab by means of arm A, adapted for the attachment of an extension rod. Arm A is held on the heater cock spindle by friction, and by loosening cap C it can be set at any angle to suit the most convenient position for the extension rod. 4. The hole in the top knob K of water handle W indicates the position of the water valve. One turn of. the handle fully opens, or entirely closes, the water passage. In either case, the knob with the hole in should be in...
Page 17 - Release or Exhaust" means the release of the expanded steam from the cylinder, this point is reached when the inside or exhaust edge of the valve opens the port and permits the steam to escape, as shown in Fig. 4, it is at this point the engine exhausts or puffs. "Expansion" means the expanding of the steam encased in the cylinder, and its time or duration lasts from the point of cut-off, Fig. 2, to the point of release or exhaust. Fig. 4. Therefore the space the valve travels during expansion equals...
Page 124 - Assume an engine, thus mounted, to be running in forward motion, the supporting wheels, the faces of which constitute the track, revolving freely in rolling contact with the drivers. The locomotive as a whole being at rest, the track under it (the tops of the supporting wheels) is forced to move backward. If now the supporting wheels be retarded in their motion, as, for example, by the action of friction brakes, the engine must as a result, tend to move off them. If they be stopped, the drivers must...
Page 187 - HOW TO OPERATE. To Start— Pull out the lever. To Stop — Push in the lever. Regulate for quantity with the water valve. To use as a heater, close the waste valve and draw the starting lever. When the water flows to the injector it is of course necessary to open the water valve before pulling out the lever, and to close it after pushing in the lever. In starting on high lifts and in lifting hot water, it is best to pull out the lever slowly. As there are a great many of the old No. 6 injectors...
Page 256 - If a small equalizer that rides the back box, block on top of the back box and chain up the back end of the bottom equalizer. If it is a truck equalizer, block on top of truck boxes between the box and truck frame. Always remove or secure all loose parts. BROKEN EQUALIZER STANDS. If the stand breaks then...
Page 115 - Back pressure" is the loss in pounds per square inch required to get the steam out of the cylinder after it has done its work. On a locomotive it is shown by the distance apart of the atmospheric and counter pressure lines. ''Total back pressure" is the distance between the lines of counter pressure and of perfect vacuum represented in pounds.
Page 254 - ... time is usually the most important factor, besides the improbability of the block remaining intact. Broken Guides, Blocks or Bolts. If any of the bolts break, try and replace them. See that all nuts are tight, or they may be the cause of springing the piston rod. If a guide bar is broken badly, disconnect one side. Broken Guide Yoke. If a yoke is bent or broken and will not hold the guides secure, disconnect one side. Disconnecting One Side. This necessarily implies that the engine is to continue...
Page 259 - Broken Draw Bar. If the engine has safety chains they will hold the tank, but not always a heavy train. If the engine is not equipped with safety chains, then secure a chain from the tank box or caboose and chain the tank to the deck. Safety chains should not have more than 4-in.
Page 258 - ... of slack. Broken Driving Brass. If a driving brass breaks and is cutting badly, run that wheel up on a thin wedge; then use an iron block between the top of frame and the spring saddle, which will take the weight off that box. Broken Wedge Bolt. It is sometimes possible to screw the nut half-way onto each part of the broken bolt and thereby hold it up in place.
Page 181 - A current of any kind — be it steam, air, water, or other fluid — has a tendency to induce a movement, in the same direction, of any body with which it may come in contact.

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