From the June 14/24 Saturday Evening Post

Great
Unfortunately, any surviving rubber accelerator would be deteriorated and unusable by now.

There were similar floor mounted rubber ball devices sold over here during the 50's and 60's - but for windshield washing.

OT, but the windshield washer pump on my 1969 Plymouth Valiant was a rubber bulb on the floor. Worked great!

Perhaps these are the applicable Canadian and US patents for it:

CA Patent 224637

US Patent 1508418

I like the address of the coupon. Just the company name, city and state.
Street name and number were not necessary.
I moved to an area that still uses the 7 digits for the phone not all 10 digits.

The '25 Studebakers had one of those rubber ball accelerators.
one I am working on works fine.
The First Sunbeam Imps that came here had a rubber ball under the gas pedal with a hose connected to it that went back to the rubber ball on the carb.
were all coveted over to cable before I ever got involved with them.
The Imp was made in Scotland, a Hillman Imp, but called a Sunbeam in the U.S.

My TT had a foot throttle setup on it
Minus the pedal any interest let me know

Bob, sent you a PM. Dave