Second Generation Escalator/Compactor: 1953 Revision



    The second generation Roto-Pac received new bodywork for 1953, featuring a streamlined box with two large horizontal braces. The new bodies were taller, to allow for greater capacity on shorter wheelbases. A twenty cubic yard version joined the sixteen and eighteen yard models. Durability improvements were made to the escalator-compactor mechanism and hydraulic system, including the 'un-channelling' of the packer box to improve load distribution. However, the basic method of operation remained unchanged. The hydraulic motor and chain drives were now concealed behind covers affixed to the upper tailgate

    Roto-Pac's acceptance by New York City spearheaded increased sales throughout the Northeast, both to municipalities and private contractors. By survey, DSNY employees overwhelmingly favored the escalator-compactor loaders, and City Tank now had the only one on the market. The firm won a 1954 contract for 165 units, even though their bid was the highest submitted. By late 1957, they had delivered the 1000th Roto-Pac body to the Department.

    Further south, Philadelphia became the next big city to go with the Roto-Pac. Beginning in late 1952, the Sanitation Division began experimenting with various packers to replace their fleet of open dump trucks and horse-drawn wagons. Philly finally chose the Roto-Pac, ordering over 200 units. These included a new narrow-bodied "Alley Cat" for use in areas where larger collection trucks could not travel. These six cubic yard versions of the Roto-Pac, specially built to the City's specifications, were a mere 77 inches wide. Though total payload was less than their 16-yard brethren, testing showed the little Cats could sock away an incredible 500 pounds per cubic yard, no small feat for a chain-driven mechanical packer during the early 1950's.

    Chicago also joined the ranks of Roto-Pac cities in the early 1950s. They had been a longtime user of Heil Conveyors, and began to switch to the Roto-Pac around 1954. The Windy City's Roto-Pac bodies were mated with new diesel-powered trucks, becoming the first municipal refuse truck fleet America to go all-diesel. City Tank was also making inroads to the Deep South, with Atlanta, Georgia going to Roto-Pac during the mid-1950s. They even managed to sell Roto-Pacs to Paris, France, probably the first time an American refuse truck design had been adopted by that city.

Video showing a DSNY Roto-Pac in action during the 1960s

Click here to watch the video on YouTube.com



Philadelphia found the 77" wide Roto-Pac Alley Cat to be the perfect truck for narrow streets




The City of Chicago was the first major city in America to obtain a large number of diesel powered refuse trucks. Shown here is one of them, a 1954 GMC DF669-47 cabover with a 150 HP Detroit Diesel 4-71 engine and Roto-Pac 20 cubic yard body. It was featured at the 1955 General Motors Powerama show in Chicago.

(Many thanks to Rob at OldGMCtrucks.com)




The DSNY bought 165 of the restyled Roto-Pacs in 1953; by '57 they had purchased over 1,000 units from City Tank

Patent # Description Inventor Assignee Date
US2754988 Non-channelling Loader for Refuse Trucks Robert A. Brown City Tank Corp August 24, 1953
US2778518 Refuse Truck and Elevator Head Shaft Therefor Robert A. Brown City Tank Corp October 27, 1953






7/4/10 (Updated 12/5/21)

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