. Science of railways . or on locomotive bearings has never been , those railroads that have adopted theuse of grease on main and side rods of very heavylocomotives are very pronounced in its favor froman economical, as well as a beneficial, standpoint,and give the following as an excellent formula: Onebox of concentrated lye in one quart of warm water,and let stand over night. Mix thoroughly by warm-ing eight pounds of tallow and two pints of goodvalve oil; then add the lye and water, and stir untilit becomes thick. In winter it is best to use onepound less of tallow a
. Science of railways . or on locomotive bearings has never been , those railroads that have adopted theuse of grease on main and side rods of very heavylocomotives are very pronounced in its favor froman economical, as well as a beneficial, standpoint,and give the following as an excellent formula: Onebox of concentrated lye in one quart of warm water,and let stand over night. Mix thoroughly by warm-ing eight pounds of tallow and two pints of goodvalve oil; then add the lye and water, and stir untilit becomes thick. In winter it is best to use onepound less of tallow and three pints of valve oil. LOGOMOTIYE GREASE PLyG 505 Where the screw plug type of grease plug is used—and thisform seems to be a favorite for all rods on a number of roads—difficulty has been found in obtaining a suitable form oflocking device which will prevent the screw from backingout and not only removing the pressure from the top of thegrease, but also dropping out and being lost. A form of. Grease Plug Fitted with a Locking Device plug which includes a locking device that will prevent thistrouble is shown in the illustration. It consists of a brassbody threaded on the bottom and screwed into the rod, anda wrought or cast iron hollow plug with a squared top and 506 LOCOMOTIVE APPLIANCES. either a flat or hollow lower end. A suitable hinged or piv-oted pawl is provided and is held in place by a small coilspring. The iron plug is slotted on the side from the top ofthe threads to within i/^ inch of the bottom of the plug, andthe pawl is arranged with a lip which engages this slot whenit is in the locked position. It will be seen that there is asmall shoulder on the body back of the pawl. This is pro-vided to allow the pawl to be held in an unlocked positionwhen the plug is being removed. When locked there is nomeans by which the screw can back out, although it can beturned down without disengaging the pawl or giving any at-tention to this part. HAND O
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