This truck, introduced in the mid 60s, pretty much does it all.  Many innovative features at the time were incorporated into its design.

As well shall see, it has a heavy-duty rear loading mechanism, an ejector panel, can operate both as a rear and front loader, taking containers at both ends.

It has a step-in cab for quick entry and exit as the engine is built right next to the cab.

Have you ever seen a rear loader as huge as this 40 yard model?  This is the largest rear loader model availble.  The largest front loader is a whopping 50 yards!
Most trucks on the road these days are 25 or 30 yard models.  No doubt a 40 yard model would be handy for those heavy urban centers that produce lots of garbage, such as New York City.

The overall length of the truck is shortened by the fact that the cab sits alongsie the engine, which is obvious from this roster shot:


The packing cycle is somewhat different that most modern rear loaders (which follow the cycle as described on the Cobey Rear Loader).  As you can see from the 4-step diagram, the bottom panel performs both the sweeping and packing operation, wheras the top panel merely serves as a pivot point and a means to raise or lower the bottom panel into position.  Each panel is operated by a set of cylinders, but the geometry (arrangement of the cylinders with respect to the panels) seems more complicated than on modern rear loaders.  The 4 step packing cycle is as follows:
  1. The top set of cylinders retracts, raising the entire mechanism and the pivot point.  Simultaneously, the packing panel's cylinders must be retracted so that it will further clear the contents in the hopper as it moves back towards the tailgate (rotating counter-clockwise about the pivot point).
  2. The top cylinders then extend, which brings the packing panel flush with the edge of the tailgate, covering the refuse and chopping down bulky objects.
  3. The packing cylinders extend, the packing panel moves forward and scoops out the hopper, pushing it into the truck and compacting it in the process.
  4. The top cylinders retract slightly to provide a little extra "lift" which further packs the load.  The hopper is now ready for the next load.
This motion is rather complicated to describe geometrically.  This mechanism on later models has been replaced with a simpler arrangement where basically the top and bottom panels provide the packing and sweeping functions independently.  Also, only set of cylinders moves at a time.
Time to dump!  Here we see the rear hopper (as part of the tailgate) hydraulically lifted up, giving us a clear view of the curved ejector panel.  The curve in this panel helps push the garbage towards the top of the truck, ensuring a full load.


Container systems
This truck is easily made into a front loader with the addition of a loading mechanism installed alongside the cab.  The ejector panel serves to push the trash towards the back of the truck.  In fact this is one of the few trucks that can serve both as a front and rear loader at the same time. A winch is standard on the rear loader which can lift containers up to 10 yards and dump their contents  into the rear hopper.  Operating the compactor as many times as necessary eventually empties out the container.

Copyright 2003, TIgerdude.com
Page created Jan 5, 2003

All photos from a sales brochure on the T100 by Garwood Industries