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. Railway mechanical engineer . not subside on heating. The changein the character of the talc is attributed to the absorption of aminute quantity of ammonia. From 40 to 60 per cent of ordinarytalc may be introduced into heavy mineral oil, provided the oil isadded to the talc and the operation not carried on in the reversemanner.—Machinery. A magnet for removing metal embedded in the flesh, whichis one of the most powerful in the world, has been installedby the Westiitghouse Electric & Manufacturing Company inthe relief dciuirtmcnt of its East Pittsburgh works. Themagnet is mounted on a liox c

. Railway mechanical engineer . not subside on heating. The changein the character of the talc is attributed to the absorption of aminute quantity of ammonia. From 40 to 60 per cent of ordinarytalc may be introduced into heavy mineral oil, provided the oil isadded to the talc and the operation not carried on in the reversemanner.—Machinery. A magnet for removing metal embedded in the flesh, whichis one of the most powerful in the world, has been installedby the Westiitghouse Electric & Manufacturing Company inthe relief dciuirtmcnt of its East Pittsburgh works. Themagnet is mounted on a liox c Stock Photo
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Contributor:

Reading Room 2020 / Alamy Stock Photo

Image ID:

2CH2AJT

File size:

7.1 MB (258 KB Compressed download)

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Dimensions:

1633 x 1530 px | 27.7 x 25.9 cm | 10.9 x 10.2 inches | 150dpi

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. Railway mechanical engineer . not subside on heating. The changein the character of the talc is attributed to the absorption of aminute quantity of ammonia. From 40 to 60 per cent of ordinarytalc may be introduced into heavy mineral oil, provided the oil isadded to the talc and the operation not carried on in the reversemanner.—Machinery. A magnet for removing metal embedded in the flesh, whichis one of the most powerful in the world, has been installedby the Westiitghouse Electric & Manufacturing Company inthe relief dciuirtmcnt of its East Pittsburgh works. Themagnet is mounted on a liox containing the resister, whichis used to regulate the amount of current flowing throughthe coils. It requires 4.000 watts for its operation, or enoughpower to supply 100 Mazda lamps of 32 candle power each,and is designed for operation on 70 volts. It is not an infrequent occurrence for steel and iron work-ers to get bits of metal in their eyes or hands. Previous tothe installation of a magnet the onlv means of removal was. Magnet in Operation, Removing Steel fr the Eye by probing, a method which is as uncertain as it is painful.Since this machine was put in operation it is a very simpleproceeding to extract such particles. The portion of thebody in which the foreign particle is embedded is placednear the pole tip of the magnet, the switch is closed, andthe magnet does the rest. Some reinarkably small pieceshave been extracted in this way. The pole piece is removable,a number of difi^erent shapes being supplieil for various classesof work. i M.xcHiNE Power and Piecework.—In any shop if the feeds,speeds and power of tnachine tools of the same class vary, it isa practical impossibility to establish a just and efficient pieceworkor premium system.—American Machinist, Materials for Casehardening.—The composition of case-liardening materials varies very widely. The following tableshows the range of variation in seventeen commercial compo-sitions tested : Per Cent Moisture 2.6

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