An upward pull or draft is then made upon the chain O, which causes the locked eccentric pulley E, its clutch G, the shaft D, and pulleys H H all to turn in concert and by the winding of the chains 2' on the pulleys H H the shaft is lowered to the position represented for it in Fig. 1, and the clutch G automatically engages with said eccentric pulley. As the chain 0 continues to be paid out after the open bucketsections have come to a state of rest, the loose eccentric pulley E falls to the position represented for it by dotted lines in said Fig. These several parts are adjusted in relation with each other to secure the following operation: The apparatus is first lowered by the chain 0 with the bucket-sections or grappling devices A A open, the clutch or engaging and disengaging device G, which may be ofany suitable construction, being released from its engagement with the eccentric pulley E, which then assumes the position represented for it by full lines in Fig. B66C3/12- Grabs actuated by two or more ropes.B66C3/00- Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials Grabs.B66C- CRANES LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES. 238000010626 work up procedure Methods 0.000 description 4.Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number Publication date Application granted granted Critical Publication of US226557A publication Critical patent/US226557A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links US226557A - Dredging apparatus - Google Patents US226557A - Dredging apparatus - Google Patents Dredging apparatus Download PDF Info Publication number US226557A US226557A US226557DA US226557A US 226557 A US226557 A US 226557A US 226557D A US226557D A US 226557DA US 226557 A US226557 A US 226557A Authority US United States Prior art keywords bucket shaft sections pulley clutch Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |