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counterweights at the rear, and by a cam motion anchored to the front truck girder. After the car is run on to the platen the hoisting drums above are rotated and the hoist cables are wound in, thus turning over the cradle and car. As this turning progresses the platen is first automatically moved over by springs until the car body is against the side of the cradle and then the four clamp beams gradually de- scend until they rest upon the top of the car, holding it firmly in place "TAE Marine REVIEW made that there is very little jar when the car wheel enters the incline, the incline castings being so made that the load is first taken by the flange of the wheel and then gradually delivered to the tread as the car rides up the slope. The speed of travel of the entire dumper along the tracks is 100 feet per minute. The machinery house above contains the cradle hoist and the moving mo- tor. and shafting. The cradle hoist consists of two drums geared through Fic. 3--Hu.etr MovasBtE Car Dumper, NaTionat Tuse Co., McKeesport, Pa. while dumping. On the return move- ment of the cradle the clamps are au- tomatically raised off the car, so that no attention need be paid to clamping the car after it is on the cradle. Two independent sets of counterweights are . provided which are designed to help the cradlé hoist in lifting the car in its first motion and also to help to hold the cradle and car when they are turned over. The cradle is designed to handle cars up to 50 feet in length and from 5 feet 9 inches to 12 feet 6 inches in height. The approach track to the dumper is on an incline and is made of steel castings which are so designed that they line up with the standard Sage track for the cars. They are so car spur gearing to two 150-horsepower mill type Crocker-Wheeler motors in The moving motor is a 75- series. horsepower Crocker-Wheeler motor and drives all four driving trucks through one line of shafting running the entire length of the machinery floor. : The operator's house is located on the front post on the far side of the machine. He stands facing the car ~dumper and the approaching car. All 'of the movements of the machine are under his control. The controllers are of the magnetic switch type with mas- ter controllers in the operator's house similar to those in the ordinary eleva- If he wishes, the operator can andling his levers. sit down while h 'gone certain physical 17 Solenoid 'brakes are provided for all the movements and a special emer- gency foot brake lever' is within easy reach. The lowering is done by re- versing switches in the controller, which make the motors act as genera- tors and retarders, thus giving perfect control without the use of mechanical devices. Electric cut-outs are installed which are independent of the operator and which prevent over travel of the cradle in either direction. The total weight of the car dumper is 780,000 pounds. Except for a few minor castings, counterweights, etc., everything is steel. Fire-proof con- struction is used throughout. The ma- chine 'has been so successful in opera- tion that another one is being built at Youngstown for the Youngstown Sheet & Tube Co. CERTIFIED WHEEL CHAINS. Under the title of "Safeguarding a Floating Fortune," the James McKay Co., of Pittsbute, Pa. gives an inter- esting talk on marine chains. There is probably no subject of greater in- terest. to: vessel owners than that of chains. All one has to do to discover the importance of the subject is to examine the list of accidents on the lakes, so many of them being due to the parting of wheel chains. Every chain that the James McKay Co. puts out is accompanied by certificates of test. They.can be depended upon to stand a much greater strain than will ever be imposed upon them in actual use. Their certified wheel. chains have been made and sold by them in large quantities for the past 28 years, and all that time the company never received a report of breakage result- ing in serious accident or in expensive delay. The company 'uses only the highest quality of double refined char- coal. iron and even then it is not worked 'into chains until it has under- -and* chemical tests. The high cost of double re- fined charcoal iron naturally makes the first cost of certified wheel chairs higher than others, but first cost is of slight moment when one considers the responsible part that wheel and steering gear chains play in naviga- tion. It is poor economy to save on the wheel chain. The H. D. Cush- mian Co:, 1014 Citizens building, are the Cleveland agents of the James McKay Co., from whom copies of this interesting booklet may be se- cured. The city of Chester will present the scout cruiser Chester with a _ hand- some silver service on June 10,