ClipArt ETC
"Lord Kelvin patented a brake in 1858 consisting of a rope or cord wrapped round the circumference of a rotating wheel, to one end of which is applied a regulated force, the other end being fixed to a spring balance." -Britannica, 1910

Brake

"Lord Kelvin patented a brake in 1858 consisting of a rope or cord wrapped round the circumference of…

An illustration of a dye-jigger.

Dye-Jigger

An illustration of a dye-jigger.