GRD 304-F-2 and Compaction Trailer



    New for 1957 was the GRD 304-F-2, a variation on the old high-lift mobile container dumper introduced in 1954. The F2 was basically a GRD attachment fitted to the rear of a commercial truck, which could be used to haul and empty the bottom-hinged Dumpsters either into a transfer trailer, or directly at the landfill. Using a motor truck gave the F-2 greater versatility, allowing it to operate on main roads and interstate highways were the old GRD tractor could not go.



ON THE JOB WITH THE GRD 304-F2; THE GEORGE McWHIRTER MATERIAL HANDLING COMPANY
Contractor, Industrial Waste Collection for the City of Atlanta, Georgia (1957)



GRD 304-F-2 on GMC truck hooks up to an 8-yard Dumpster at a commercial warehouse....



...is then hoisted and carried to disposal point....



...at a central collection area where a City transfer truck waits...



...or directly to the City dump



McWhirter GRD 304-F-2 on film (video courtesy of Refuse Truck Media)




GRD 304-F-2 dumps containers at heights up to 10 feet, including bottom-opening containers (left) or tilt-type (right)



Bottom-dumping procedure



Emptying into a Dinosaur roll-off box



Carrying container on public highway. Note the massive counterweight attached to the front bumper



DEMPSTER COMPACTION TRAILER

    42 and 53-cubic yard compaction semi-trailers were introduced in 1960, suitable for use at permanent transfer stations, or for mobile operations in conjunction with the GRD 304/304-F-2. The gaping hopper held 16 cubic yards, and the horizontal packer/ejector ram had its own power plant for independent operation.


The mighty Dempster compaction trailer



GRD 304-F-2 was good mate for the new trailer



SELECTED PATENTS
Patent # Description Inventor Assignee Date
US2934227 Chassis mounted hoisting and dumping... (GRD304F2) Dempster, et al Dempster Bros. February 18, 1957
US3049250 Compaction Bodies (trailer) Dempster, et al Dempster Bros. November 4, 1959





2/22/13 (updated 8/29/21)

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