. Electric railway journal . manufactured of a very hard and toughbell metal in the companys own brass foundry. Untilrecently the work of smoothing the trolley wheel groovehas been done with an ordinary round file which limitedthe work of one man to about fifty wheels per day. Thisadded greatly to the manufacturing cost of the trolleywheels, and consequently it was desired to increase theoutput and at the same time reduce this cost of manu-facture. This was accomplished by providing a counter-shaft attachment to the tool rest of one of the smallengine lathes. A carbonite wheel, having the same
. Electric railway journal . manufactured of a very hard and toughbell metal in the companys own brass foundry. Untilrecently the work of smoothing the trolley wheel groovehas been done with an ordinary round file which limitedthe work of one man to about fifty wheels per day. Thisadded greatly to the manufacturing cost of the trolleywheels, and consequently it was desired to increase theoutput and at the same time reduce this cost of manu-facture. This was accomplished by providing a counter-shaft attachment to the tool rest of one of the smallengine lathes. A carbonite wheel, having the same con- 654 ELECTRIC RAILWAY JOURNAL [Vol. XLIU, No. 12. tour as the trolley wheel groove, is keyed to an exten-sion on one side. The grinding tool is forced into thegroove by way of a hand lever and ratchet which alreadyformed a part of the tool rest. This device has in-creased the output approximately 200 wheels per extreme hardness of the trolley wheel metal, how-ever, makes it necessary to renew the 10-in. grinding. Milwaukee Shop Kinks—Commutator Slotting Machine wheel after finishing each 1000 trolley wheels. A viewof this lathe attachment for grinding trolley wheels isshown in one of the illustrations. SPECIAL AXLE STRAIGHTENER Wheel routine in the Milwaukee Railway repair shopis as follows: As wheels are brought in from the truckrepair department, they are run through the specialaxle-straightening machine, where the axles are in-spected and straightened if necessary, after which theyare passed on to the wheel lathe for truing the wheeltreads and flanges. In case of new wheels, after theyhave been pressed on the axle in the wheel press, theytoo pass through the axle straightener to verify theaxle before going into service. The axle straightener is a special tool built by a lo-cal manufacturer. It consists of two pairs of I-beams,one acting as a support for the axle-straightenerplunger and the other as the bearing for the wedgesand inclined planes which support th
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