Excavating – Peat excavators
Patent
1974-07-25
1976-05-18
Crowder, Clifford D.
Excavating
Peat excavators
37 67, 403145, E02F 390
Patent
active
039568342
ABSTRACT:
Dredge ladder shock mounting arrangements for two or more part dredge ladders with a main dredge ladder part pivotally connected at a dredge platform and a secondary dredge ladder part adjustably connected to the main ladder part. The interconnecting systems for connecting the two ladder parts includes a pivot pin for accommodating changes in the angular inclination of the two ladder parts with respect to one another as well as locking members for pivotally locking the ladder parts in predetermined adjusting working positions. Shock mounting devices are interposed between the pivot pin and the two ladder parts so that relative movement of the ladder parts in a direction radially of the pivot pin axis against the shock absorbing forces is permitted. The locking members includes guide pins relatively fixed in position on the main ladder part which slidably and guidingly engage linearly extending guide slots in the secondary dredge ladder parts, such that the secondary dredge ladder part is constrained for movement only along the longitudinal direction thereof during dredging operations. Preferred embodiments also include additional shock absorbing devices interposed at the pivotal connection between the barge and the main dredge ladder part. These arrangements, by accommodating adjustment of the pivot angle of the ladder parts, will accommodate keeping up to 80% of the cutter blades in the bank at all times.
REFERENCES:
patent: 2242520 (1941-05-01), Grundborg
patent: 3050135 (1962-08-01), Kelley
patent: 3253357 (1966-05-01), Allard
patent: 3495409 (1970-02-01), Riedemann
patent: 3517519 (1970-06-01), Kolb et al.
patent: 3521387 (1970-07-01), Degelman
patent: 3579872 (1971-05-01), Jantzen
patent: 3739503 (1973-06-01), Barker et al.
patent: 3777376 (1973-12-01), Turner et al.
patent: 3821859 (1974-07-01), McWatters
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