Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1979-06-21
1981-05-12
Paperner, Leslie J.
Material or article handling
Vertically swinging load support
Shovel or fork type
212230, 414718, 414722, 414728, E02F 346
Patent
active
042669081
ABSTRACT:
An apparatus for excavating or cleaning out sumps and drainage pits includes a mobile, towable chassis rotatably supporting a platform thereon. A standard extends upwardly from the platform and an elongate, rigid boom structure and guide is mounted upon the standard for upward and downward swinging movement and for forward and rearward reciprocal movement relative to the platform. A material engaging member such as a bucket is mounted to a forward end of the boom structure and has a cover therewith whereby the bucket closes and traps mud or loose materials for removal from the sump or drainage pit. An engine mounted upon the platform powers a hydraulic pump for routing fluid under pressure to motors and rams controlling operation of the platform, boom structure and material engaging member. An operator's seat and console is mounted on the platform and has controls therewith for directing operation of the apparatus whereby the platform is rotatable to position the boom structure and the engaging member generally over an area and material to be excavated, the boom structure is swingable downwardly for contact of the engaging member with the material and the boom structure is movable longitudinally rearwardly to remove the material.
REFERENCES:
patent: 1438752 (1922-12-01), Doering
patent: 2334323 (1943-11-01), Gilbert
patent: 2348796 (1944-05-01), Ferwerda
patent: 2674500 (1954-04-01), Hukari
patent: 2792138 (1957-05-01), Olson
patent: 2852149 (1958-09-01), Bruneri
patent: 3550795 (1970-12-01), Schofield
patent: 3575307 (1971-04-01), Guinot
patent: 3680724 (1972-08-01), Schaeff
patent: 3703973 (1922-11-01), Nilsson
patent: 3999670 (1976-12-01), Weyhausen
Paperner Leslie J.
Siemens Terrance L.
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