This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
A handy device for cleaning furniture upholstering and vehicle-seat tuft-ings may be easily made as follows: Take a n ordinary round paintbrush and cut the handle off, leaving it about 1 1/2 in. long, then saw a V-shaped notch in it, as shown in Fig. 1. Attach the brush to the ratchet screwdriver, Fig. 2, by inserting the screwdriver blade in the notch of the brush handle, and secure it by wrapping a strong cord around the handle. Place the brush in the tuft and work the screwdriver handle, as in turning a screw. A few quick turns of the brush will throw out the dirt which is impossible to remove with a straight brush.