Pak-Mor Trailers     Throughout the 1950s, Pak-Mor led the way in the field of compaction trailers. Their packers could theoretically be built to any length allowed on the highway. They were perfectly suited as stand-alone mobile transfer stations, or to haul from the fixed transfer stations which began to spring up in urban areas. Customized hopper openings made Pak-Mor trailers versatile haulers. Re-named Lo Boye in 1958, Pak-Mor marketed these for residential collection as well. A single 32-cubic yard Lo Boye was two to three times as large as the typical refuse packers of the decade. The Handi-Lift attachment was available by the early 1960s, which handled side-load detachable containers. The George McWhirter Material Handling Company contracted to collect much of the commercial refuse for the City of Atlanta, Georgia. This 1957 image shows a McWhirter Demster GRD-304 high lift hoist truck emptying a dumpster into a city-owned Pak-Mor trailer. 1959 Lo Boye 28-yard trailer for Culver City, California is pulled by a Dodge tractor with a right-hand drive and a walk-in cab. The two-man crew served about 450 customers per day. Massive 1958 Lo Boye demonstrator unit attracts a small crowd of spectators. Chain-driven packer is powered independent of towing vehicle by a liquid-cooled engine at front of trailer. Truck tractor is a 1957 Chevrolet Viking. Another Lo Boye, but with an air-cooled Wisconsin V4 auxiliary engine, pulled by a 1958 Ford C-850 A 1960 32-yard Lo Boye used by Garbage Service Company of Phoenix, Arizona for bulk refuse. Clam-shell loader and packer are both powered by a 4-cylinder Hercules gasoline engine. 36-cubic yard, top-loading compaction trailer used by Trenton, New Jersey, exits transfer station in 1958 The Giant marked the zenith of Pak-Mor's circular trailer era. The 65-yard behemoth loaded in the middle, packed in either direction and dumped from either end! It was patented in 1956, but not officially introduced until August of 1960 at the APWA show in New York. By the late 1960s, the Giant was replaced by more conventional rectangular-bodied transfer trailers SELECTED PATENTS Patent # Description Inventor Assignee Date US2868398 Refuse Handling Vehicle (Pak-Mor Giant) Anderson, et.al. Pak-Mor June 19, 1956 US3074571 Power transmission for refuse handling vehicles Dean Pak-Mor July 1, 1958 4/5/09 © 2009 All Rights Reserved Photos from factory brochures/advertisements except as noted Logos shown are the trademarks of respective manufacturers