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Equipment Used Afloat, Ashore New Design Oil Cup for Reciprocating Steam Engines—Does Not Clog—Boiler Gage Light—Electric Driven Mortiser for Joiner Work HE mechanical means by which marine engines are lubricated are a part of the design of the unit. It is fair to assume that the lubrication system so _ installed has been developed and perfected through many years of practical operation. However certain features which give trouble have never been satisfactorily corrected. Since lubrication is. vital not only to the efficiency of the ma- chinery but to its very life, this is a matter of genuine concern to. the operating engineer and to the owner of the vessel. On the Great Lakes practically all vessels are propelled by reciprocat- ing steam engines similar in design, and they are operated under similar conditions. A heavy bodied highly compounded oil especially suitable for maintaining a film of oil under wet conditions should be used for lub- ricating cross-head pins, crank pins, slides and guides and main bearings. The customary manner for getting oil to the cross-head pin and the crank pin is to feed this oil through a funnel shaped cup (known as a wiper cup) attached to the cross head and receiving make up oil from ig eee DRILL FoR % s TAP Dost Seldored tre) b4 — =f thls the reservoir by drip contact in the upper position of the cross-head. This cup at the bottom has connected to it a small diameter copper tubing. The oil in the wiper cup is held in place by horse hair and made to feed slowly through the pipe to the cross- head pins and crank pins. A serious difficulty is met with in practice due to emulsified oil clogging the con- nection between the wiper cup and the pipe or the pipe itself. This con- dition will, of course, stop the feed of lubrication and is dangerous. To overcome this difficulty a wiper cup of the design shown in the ac- companying illustration has been de- veloped. The cup is of composition casting and is of the same shape and size as the cup commonly used at the present time on vessels of the Great Lakes. There are, however, some very important differences in arrangement. In the first place it is recommended that the pipe connect- ing with the cup should be at least of %-inch diameter. Approximately half way down in the cup a screen of tinned copper is soldered in place dividing the cup horizontally. Above this sereen a ball of No. 32 tinned Peg foaated Tin Sereen sotdened 10 b4-£ Holez pee 4y- sa. n cou AON one wire is inserted to take the place of the horse hair ordinarily used. Across the top of the cup, holding the ball of twisted tinned wire in place, are three or four 12 gage, or thereabout, brass wire rods. As the oil is fed to the wiper cup it percolates through the mass of twisted tinned wire, which will not become soggy as the horse hair is inclined to do and the oil will feed readily through the screen and into the oil pipe thus eliminating all chance of emulsification in the wiper cup causing a tit of more or less so- lidified oil to form at the bottom of the cup or in the pipe leading from the cup and thus stopping the proper flow of lubrication. The accompanying illustration shows how this new type of wiper cup is made in single or double style. From practical tests on several ships on the Great Lakes it is believed that this new style of cup will do away with oil stoppage trouble now fre- quently experienced. The Ontario car ferries and the boats of the Port Hu- ron and Sarnia Ferry Co. and sev- eral freighters have found the use (Continued on Page 52) ae Fld FL. Pas Poste? wsTh ¥32 Ziv ge Zoavwed mie ~al #22 gavie Tin ved sute a Matted fo S DRICL Ft PiPk TAY TS Set Co K NACTION. CiATIed feosety A NEW DESIGN OF OIL CUP FOR STEAM-RECIPROCATING MARINE ENGINES—TRIED OUT WITH SUCCESS—EMULSIFIED OIL CANNOT SOLIDIFY AND BLOCK PASSAGE TO CRANK AND CROSSHEAD PINS—BOTH THE SINGLE AND DOUBLE TYPES ARE SHOWN MARINE REVIEW—June, 1927 39