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    The Idea     6 prototypes     Development     Production
The idea
Marc Grue, inventor of the Double Trolley, explains how the project started:

"Jazz bassist Jesper Carlsen had converted a laundry basket trolley into a transportation device for his double bass (see left). I borrowed it from him and rolled my bass with it to and from orchestra rehearsals and concerts.

At that time I was looking for a high, adjustable stool to sit on, but I couldn't really find one high enough. One day I was looking at the laundry trolley and thought: It should be possible to put a seat on the top!"
Marc Grue with his double bass on the laundry trolley in 1992.
Marc Grue continues:

"I dropped another rebuild of the laundry trolley and went on with the possibilities of making a collapsible combined stool and trolley.

After a while I imagined the horrifying scenario of how the two legs (or rather wheels!) could roll out from under me during a concert!!

I therefore explored the idea of taking off the wheels instead. This was the birth of the Double Trolley and I started to work on the first prototype."


See how the prototypes of the Double Trolley were modified and improved over a period of 5 years!
One of many sketches for a collapsible combined trolley/stool (the seat is touching the shoulder of the bass).

 

We have received the Double Trolley here in Canada and I'm writing to thank you for your wonderful product! So far it is working perfectly - I tested it out this past weekend on my way to orchestra - you see, I am a member of the Toronto Symphony Youth Orchestra, but I live far away from Toronto and need to take the train and the subway to get to and travel about Toronto......thank you for making it that much easier!

Jonathan Cegys
Canada
 

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