. Railway mechanical engineer . l when trued for this workgives a very efficient shearing effect against the face of thewheel, resulting in high production. Working on 12 pulleys, 4 in. wide face, the average productiontime of two to three minutes per pulley, floor to floor, isreadily obtainable. The pulley grinding fixture, illustrated, consists of twounits, a plate with a vertical spindle and an electric motorwith reduction gearing. The vertical spindle is of suitablediameter to fit the hole in the hub of the pulley and a pin,serving as a driving dog is inserted between the spoke
. Railway mechanical engineer . l when trued for this workgives a very efficient shearing effect against the face of thewheel, resulting in high production. Working on 12 pulleys, 4 in. wide face, the average productiontime of two to three minutes per pulley, floor to floor, isreadily obtainable. The pulley grinding fixture, illustrated, consists of twounits, a plate with a vertical spindle and an electric motorwith reduction gearing. The vertical spindle is of suitablediameter to fit the hole in the hub of the pulley and a pin,serving as a driving dog is inserted between the spokes. Thepulley is rotated by power and the feed adjusted by a small change the fixture can readily be adapted towebbed pulleys. Pulley castings are usually very thin, often chilled, and frequently hard to machine. If machined on some types oflathes, low speeds and feeds are necessary and the percentageof breakage is high. Grinding offers the best solution of thisas many other problems. The same principle can be success-. Diamond Pulley Grinding Attachment fully applied to the grinding of malleable iron brake shoes,rollers for conveyors, wheels for small trucks and similarwork. This pulley grinding fixture is made by the DiamondMachine Company, Providence, R. I. Toothed Key and Sleeve Type Chuck A pany CCURACY, ease of operation and durability are fea-tures that have been kept in mind in the design of thenew chuck made by the Jacobs Manufacturing Corn-Hartford, Conn. This chuck is of the toothed key
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
