. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . k-shop usage by any class of labor withoutinterfering with its accuracy. It isclaimed by Mr. L. Johnson and Mr. , the inventors of this machine,that each of the above points is fullymet, and we understand that this is borneout in practice so successfully that largenumbers of this improved testing ma-chine are being supplied to leading Brit- have a smooth /7a/ surface) is placed onthe table (I). The adjusting screw (,E)is then brought down until the steel ballrests on the prepared su
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . k-shop usage by any class of labor withoutinterfering with its accuracy. It isclaimed by Mr. L. Johnson and Mr. , the inventors of this machine,that each of the above points is fullymet, and we understand that this is borneout in practice so successfully that largenumbers of this improved testing ma-chine are being supplied to leading Brit- have a smooth /7a/ surface) is placed onthe table (I). The adjusting screw (,E)is then brought down until the steel ballrests on the prepared surface of the speci-men. The lever (B) is then pulled for-ward until its weight (H) rises allowingthe pawl (J) to fall into the toothed sec-tor (K) which will automatically pre-vent any further movement of the lever(B). The load may be kept on for anydesired period by means of the retainingpawl (L) which is moved in and out ofposition by means of the knurled handle(M). The lever is now replaced to itsoriginal vertical position and the adjust-ing screw raised. A machine of this type to take articles. HARDNESS TESTING MACHINE ish industrial plants, who desire quick,simple and accurate methods of checkingtheir products at various stages of manu-facture, to ensure uniformity of quality. This machine consists of a light metalframe carrying the application lever,weight lever and two eccentric shafts,with the necessary small fittings. Theeccentric shafts are practically friction-less, as they rotate in Hoffman RollerBearings. The machine will be readilyunderstood from the description of themethods of operation, in conjunction withthe lettered illustration. The specimen to be tested C which must up to 4 ins. deep weighs 120 lbs. Thisnew Hardness Testing Machine is manu-factured in England by Messrs. Brown,Bayleys Sleel Works, Ltd., Sheffield, inwhose Research Laboratory it was de- nd fed d b; the departments of these works 11 nai dines in constant use for the past eigh
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
