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354 are made of %4-inch material while the hook proper is further reinforced by slightly shorter outer plates 7-inch thick. The plates are securely fast- ened together through the medium of several countersunk-head rivets. / Desi Ri of the merchant marine is taxing the ingenuity of American inventors to perfect labor saving and other equipment for the economical maintenance of vessels. This has resulted in the development of numerous devices for use both in the design and construction of ves- sels. and in their equipment. The device shown in the accompanying illustrations was recently patented by John Frame, Searsport, Me. It is a scale devised accurately to weigh a vessel and its cargo. The design reveals considerable study. It is said that the scale may be located in any THE MARINE REVIEW In making the hook, the plates are first marked with the desired out- line by means of a template. They are then cut to the desired con- tour with an autogenous cutting torch. The plates are then drilled convenient place as regards fore-and- aft position and that it will give cor- rect readings, regardless of whether the ship is .on'. an listed. It also gives the draft of the vessel by means of graduations pro- vided for this special purpose on the scale' beam'. Fig. 1 is a detailed section of the device while Fig. 2 is a section on line 2-2 on Fig. 1. Fig. 3 is a view through Fig. 1 on line 3-3. Fig. 4 is a plan view of Fig. 3. Fig. 5 isa sectional view through line 5-5 on Fig. 1 Fie, 6. is a. detailed. view of, the front end of the scale beam shown in re pe KFA eS SSA ie See eae ayy KE de Psssssss bss Sss55 SSSSO -- Sos SSSSS SSS ay a > EE ZRSSSS ASS VERS eee Vz SESS Zecca 37] epee alee f s sh SS sh 5 pao o eI) eee ean POOP ZZ a dda Ee Pe $s SS FiG. ean Hein. OF A SCALE FOR WEIGHING A SHIP AND ITS CARGO FIG. 2 IS A CROSS IG. 1 WHILE FIGS. 3 AND 4 SHOW THE DEVICE FoR COMPENSATING FOR PITCHED POSITIONS OF THE SHIP even keel or July, 1919 and riveted together. It is pointeq out that the laminated construction jg comparatively, strong and that a de. cided economy results as scrap ma- terial only is utilized. A number of these hooks afe in uSe at present, ung a Ship Big. Le) Fig 7 is a perspective view of one of .the scale beam weights while Fig. 8 is a longitudinal vertical section through a check valve. In the illustrations, r is the ship's bottom while 2, 3, 4 and 5 are decks, The standard that--carries the scale is shown at 6. This is provided with a bracket, 7, to which the yoke, 8, is fastened. 'This yoke carries the knife- edge pivots, rz, which bear in the holes ro. The knife - bearings. are securely fastened to the scale beam 12, The beam is provided with a counter- weight, 75, and a hook, 16. A retain- ing plate, r8, is secured to the hook by means of the stud, 17. This stud carries a number of weights, 20, which slip one over the other. The' scale beam is also provided with a movable weight, 70. How the Device Works Each of the weights, 20, is equal to the weight of r9 when it is at its out- ermost point on the scale beam. These weights are used as follows: After the weight zo has been moved to its outermost position the first time, . the pin, 27, and the plate, 28, are fitted in place and the weight; 19, moved back to the starting point: .Upon the second moyement of the* weight z9 to the outer end of 'the' beam, a sleeve, 20, is placed in position' over the pin, 17, and the weight, 19, moved back to its starting point a second time. This procedure continues 'until the ship is fully loaded. To shold "the "sleeves in place, they are -provided. with. a bayonet slot, 27, and a_pin, 22, .as, shown in Figs 7, CO hy ae _ The scale beam is equipped with links, 23 and 24, which carry the rods, 25 and 26. Rod 26 is connected to a plunger, 29, which fits a casing 34 This casing is supplied with a protec- tion jacket, 44. It is guided by the bearing 2°. Rod 25 is connected to the weight 27, which is guided by sockets, 3r. and 32. Both the plunger and the weight are suspended from frictionless knife-edge bearings, 30. A slight pull on the weight by rods 25 and 26 causes actuation. The weight, 27,,"is**open to .atmospheric pressure which causes it to respond to the at- traction of gravitation while the plunger, 20, is partly submerged in oil which causes it to exert a greater or |