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316 jector and carries the water slowly so the impurities have ample time to be precipitated and settle before the water reaches the boiler. By opening a blow off valve in ‘tthe purifier, the sludge, which does not become hard with because it is contact not in THIS MACHINE CUTS TO LENGTH AND BENDS ANGLES AND CHANNELS TO €CIRCLES heat, is discharged when in operation, the feed water from pump or _ in- jector enters at the top of the mixing chamber above the purifier through ithe nozzle outlet, causing a syphoning effect which induces a flow of hot water from the boiler. The feed water and hot water from the boiler mix at this point and is discharged upon the baffle plate, causing the water to spread and enter the purifier quiet- ly. At the baffle it must go down before rising to the outlet of ‘the dis- charge pipe. Precipitation is com- pleted at this point and any foreign matter remaining in the water will be unable tto make this rise and must settle to the bottom of the purifier. The valve in the pipe line from boiler can be regulated so that the proper heat between 250 degrees Fahr. and 300 degrees Fahr. is maintained within the purifier. always The Jahncke Drydock & Ship Repair Corp. has bought the government’s inter- est in the Jahncke plant, established dur- ing the war. MARINE REVIEW Machine Makes Circular Bends 1 In Anglé Iron A machine which will cut to length and bend angle iron toacircular form has been placed on the market recently by the Excelsior Tool & Machine Co., East St. bous, di. Lt -45 claimed that this machine, which is illustrated at the left, does not twist or deface the angles, which range up to 2 x 2°x 34- inch material. Bar iron % x 4 inches and 2-inch T-iron or less can be formed with the same rolls, which are adjust- able to the various requirements. . Spe- cial rolls for pipe, channel . iron. ...0¢ other’ shapes within the capacity of the machine can be sup- plied. All three of the bending rolls are driven, thereby small circles can. be rolled by one pass through the machine. Driving power is supplied from a line shaft or indi- vidual motor and by means of a friction clutch the machine may be started and July, 1922 stopped under pressure. The frames are constructed of semisteel while the rolls are made of forged tool stééel, hard- ened and driven by heavy chain gears having a 14 to 1 ratio. The speed of the driving pulley is 200 revolutions per minute while the speed of the rolls is 15 revolutions per minute or 25 lineal feet per minute, the power required be- ing 3 horsepower. Wrench for Marine Pipe Fitting A wrench which is particularly adapted to pipe fitting in tight quarters is shown in the accompanying illustration. This de- . vice has a wide range of applications, par- ticularly in marine pipe fitting work. The curved jaw of this wrench is solid across the center but has open ends and the face resembles the letter H. It is claimed that this design affords several advantages, especially that the open end will straddle the corner of awkward fit- tings while the solid center may be used as a thin flange and the solid, one-piece jaw will not spread. The curved face of the jaw allows an effective grip with the use of three shifts of the chain links and work in close quar- ters, such as the connecting of steam pipes in out of the way places, is possible. No chance for confusion is possible when hur- ried in using this wrench, it is claimed. the position of the jaw + may be reversed. This wrench is mariifactural by |J. H.* Williams & Co.,. Brooklyn, HOW WRENCH IS USED WITH CABLE CHAIN