Hi vacuumssuck213
The red tool is actually called 'The Lifter Grip,' as explained above, it was a way to convert the upright to a hand portable, or tank/canister. That tool, and the 'Hose Coupler,' which you also posted date back to circa 1928, with the Scott/Fetzer Home Sanitation System. There was also a straight suction nozzle, and a small bag, but these were optional tools and dropped from the line in the late 1940's. There should also be a small round metal tool like the hose coupler, but designed to go over the exhaust to hook the hose up as a blower.
Hope that helps,
Alex Taber.