Apparatus for multiple setting of concrete paving blocks

Details Apparatus for multiple setting of concrete paving blocks Apparatus for multiple setting of concrete paving blocks

1979-12-11

1982-03-23

Byers, Jr., Nile C.

Road structure, process, or apparatus

Apparatus

Block laying

52749, 414623, E01C 1952

Patent

active

043209858

ABSTRACT:
Apparatus for the setting of paving blocks includes a movable chassis, an outrigger arm mounted on the chassis for heightwise adjustment, and grab tong devices suspended from the outrigger arm, the grab tong devices each being operable to grip a group of paving blocks laterally. Each of the grab tong devices has opposed jaws, one of which is fixedly mounted and the other of which is movably mounted, and linkage means are provided to operably mount the movable jaw such that upon suspension of the grab tong device from the outrigger arm with paving blocks disposed between the opposed jaws, the linkage means is operable to effect a clamping action on the paving blocks to thereby provide for lifting of the paving blocks with the clamping force being proportional to the weight being lifted.

REFERENCES:
patent: Re28305 (1975-01-01), Williamson
patent: 1573263 (1926-02-01), Madden
patent: 2578016 (1951-12-01), Rike
patent: 2597760 (1952-05-01), Strahm
patent: 4060955 (1977-12-01), Lachnit
patent: 4090628 (1978-05-01), Sinclair
patent: 4168130 (1979-09-01), Barth
patent: 4194853 (1980-03-01), Barth

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