. Cassier's magazine. ma-: A ?bhkiJt FIG. 9.—A 30-TON ELECTRICALLY-DRIVEN ANGLE PORTAL CRANE, BUILT BY THE DUESSELDORFERKRAHNBATJGESELLSCHAFT C. W. LTEBE, M. B. H., DUESSELDORF-OBERKASSEL of transmission of power. Beingmounted on lattice-braced staging, thehammer crane is a portal crane. Theshape of the support in plan is eithertrilateral or rectangular, according tocircumstances. Differences occur in the The number of Goliaths of abnor-mal span now used and being con-structed is striking. As in America, soin Germany they are taking the placeof wharf cranes, of ordinary Goliaths and gantry cra
. Cassier's magazine. ma-: A ?bhkiJt FIG. 9.—A 30-TON ELECTRICALLY-DRIVEN ANGLE PORTAL CRANE, BUILT BY THE DUESSELDORFERKRAHNBATJGESELLSCHAFT C. W. LTEBE, M. B. H., DUESSELDORF-OBERKASSEL of transmission of power. Beingmounted on lattice-braced staging, thehammer crane is a portal crane. Theshape of the support in plan is eithertrilateral or rectangular, according tocircumstances. Differences occur in the The number of Goliaths of abnor-mal span now used and being con-structed is striking. As in America, soin Germany they are taking the placeof wharf cranes, of ordinary Goliaths and gantry cranes of moderate radii and SPECIAL FORMS OF CRANES 317. -A 5-TON ELECTRIC LOCOMOTIVE CRANE, BUILT BY THE OERLIKONZURICH, SWITZERLAND ICHINE WORKS, spans. The term sometimes given tothem,—bridge cranes,—is one that fitsthe design exactly, for they are travel-ling bridges of 100 to 200 feet or morein length, spanning lines of track onrailways and wharves and reaching overships and barges. Here, too, designsare already modified variously. Thereis the bridge carrying a crab,—shownin Fig. 4,—the length of whose travelterminates with the end legs, and thereis the type,—shown in Fig. 3,—in whichthe ends overhang like short jibs. Bothof these were built by the ElectricalCompany, Limited. Fig. 5 shows one of the latter with a curious crab whichruns on the lower booms of the bridge,but which has a horizontal jib standingout beyond to reach over the nose form of jib in smaller designs,examples of which are being now at-tempted, may probably become afavourite in shops also. A travelling bridge crane,—notshown,—made by the Beu
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyork, booksubjec
