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26 Do MARINE REVIEW AND MARINE ANOTHER TYPE OF ORE SCRAPER. Samuel E. Leonard, manager at Ashtabula, O., for the Great Lakes Towing Co., has patented a scraper attachment for hoist- ing apparatus used in unloading ore carriers. In accordance with the usual custom of having patent specifications as broad as pos- sible, the Leonard device is said to be useful in the handling of all kinds of coarse freight, but it is especially designed as an adjunct to the clam-shell hoist now coming into general use on docks of the lakes where iron ore is unloaded. Its purpose 1s to draw the ore from the sides of the vessel to the center, under the hatch openings, so that it may be readily picked up by the grab buckets. Fig. 1 among the drawings is a cross-section of a vesse! and an elevation of the scraping attachment with a bucket shown in connection therewith. Fig. 2 is a side elevation of the scraper with a cross-section of a portion of the vessel and the supports and operating means for the scraper shown more or less in out- line. Fig. 3 is a perspective of the scraper and Fig. 4 is a plan view of Fig. 1. : i Of course the use for a scraper in connection with grab buckets comes from the fact that a bucket of this kind can only work beneath the hatch through which it is lowered and has no means whereby freight lying beyond the grasp of its wings can be reached. Hence there is always involved much expensive hand labor for working the freight from the sides and between hatches Tig. 1. ey. Ny AASSAASA NOY SMAHONY W | > Lar ie to a point within the range of the bucket. The Leonard patent specifications are made to cover the hoisting apparatus as well as the scraper and the whole device is thus described: "It comprises a suitable upright support or frame F of such elevation and strength as the work may need and which stands firmly or is erected upon the dock D', where unloading of the vessel or boat A takes place. Any suitable structure, fixed or movable, may be employed as this frame. Upon the said frame or supporting structure F is a boom B, much as usual, which is adapted to reach over the boat or vessel and which carries the bucket C and the scraper mechanism aggregated under designa- tion D. The bucket C and mechanism D are operated in different vertical planes, but may come into close working relation at times. Both are operatively suspended from the boom B, and both are adapted to be operated therefrom through suitable cable or rope connections. ¢ ; "In this description it is assumed that the bucket C is of well-known pattern and is supported and operated in a well- known way, having a small carriage c on the double track of the boom B, from which it is suspended by ropes or cables, and with sheaves here and there as may be needed to operate the same. The scraper D is suspended by cables 2 and 3 from rods, bars or tracks 4 at the sides of the boom, and the scraper is suspended and operated from these by the two cables 2 and 3, while cable 6 serves to fix the scraper in one position or another back and forth on the boom or on rods 4 thereon, according to the working position wanted in any given case. A drum 7 is provided, through which this cord or cable is controlled by power from the engine. (Not shown). The scraper itself comprises two wings or sec- tions 9 and Io, pivoted at their inner ends on a central frame 12 of any suitable kind or construction and which carries sheaves 14 here and there over which the cables or cords 2 and 3 run and RECORD. [uly 2g : are supported. Cross rods 15 connect the sides of frame 12, Sr all of the said sheaves 14 are or may be supported ese rods. Cable 2 passes down and is affixed on one of . or inner cross rods 15' at a point 16, while cable or cord down over two sheaves 14 and engages one of the outer op upper passes sie haa a rE ARC EIT ut 5 HD | i i ys HY eT =a | ll lower rods or rounds 15" at 17. Each cable 2 and 3 has its own drum.18 and 19 respectively, over which it is wound, and the corresponding cords of the two wings have drums 18 and 19 re spectively. Thus cables 2 for said wings go to drum or drums 18 and cables 3 go to drum or drums 19, and these drums also Fe 3 ols (5-4 }- Hy mI) fT Rae ND > S ontn TRU 2 eT RR cS Hl ec fr Bi Sa | h ULL ~Auy qn tt Cat ruundanl HOST MOOR en peas UTTTTTTI Ta Aa: | q 16 | 7 19 ee and obviously are power-controlled from the engine; but the com" nections therewith are not shown. i _ "Now in operation the rotation of drum 18 alone will bodily -- raise the scraper with the wings spread or folded, as may be, am@ drum 19 controls the closing and opening of the wings. If they be lowered to working position and spread for work, as in Fig. 2 the said wings can be drawn forcibly toward folding poe ; suitably turning or winding drum 19. Then and in this manne?