Cyclopedia of Mechanical Engineering Volume 1; A General Reference Work on Machine Shop Practice, Tool Making, Forging, Pattern Making, Foundry, Work, Metallurgy, Steam Boilers and Engines, Gas Producers, Gas Engines, Automobiles, Elevators
Cyclopedia of Mechanical Engineering Volume 1; A General Reference Work on Machine Shop Practice, Tool Making, Forging, Pattern Making, Foundry, Work, Metallurgy, Steam Boilers and Engines, Gas Producers, Gas Engines, Automobiles, Elevators...
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. 1910 Excerpt: ...off the contact points of A and C. Remove as nearly as possible the same amount of metal from each. When these two plates have been brought so as to be in contact over their whole areas, lay plate A aside and scrape B until it fits C, but do not touch A. Then try A and B together. It they do not touch over their whole ...
Read More
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. 1910 Excerpt: ...off the contact points of A and C. Remove as nearly as possible the same amount of metal from each. When these two plates have been brought so as to be in contact over their whole areas, lay plate A aside and scrape B until it fits C, but do not touch A. Then try A and B together. It they do not touch over their whole areas, treat them as before described for A and C. Then introduce C again. Continue this alternating process until the three plates form a bearing over the whole of the surface of each of the other two. During the latter part of the process, use alcohol instead of red lead. This will leave clean, bright spots at the points of contact. Fitting Brasses is a piece of work that is now usually done on a machine, but which is sometimes done by hand. Brasses that are to be used for connecting rods, and which are made in two pieces as shown in Fig. 239, have a tendency to warp after the machine work has been done upon them. The difficulty arises from their closing along the diameter A. Thus if the brass is finished, and the hole bored out to the proper diameter, and is then cut apart on Fi. 239. tho line CD, it will be found, shortly afterwards, that the dU ameter A is less than the diameter B. It may, therefore, be necessary to bore the hole somewhat larger than the working diameter. The kerf made by the saw will usually allow the parts to be drawn together along the diameter B so that it will more than make up for the shrinkage at A. The hole can then be scraped to fit the pin. The brasses should always be keyed solidly n: etal to metal. This avoids a wear of the sides and edges oi the metal due to the thrust of the rod. Joints. Where a gas or liquid is to be retained in a pipe or other vessel without leakage, a tight joint is necessary. The method o..
Read Less
