Spinning Levers

Spinning Levers

Rejissyor: Handy (Jam) Organization. "The transmission in the modern motorcar -- the mechanism that makes it possible to have three forward speeds and a reverse -- is a series of levers, levers that spin." 04:45:35:28 VS cartoon of Archimedes trying to move earth with a lever extending from the moon or another planet in outer space; CU cartoon of Archimedes says “Give me a lever long enough and I can move the world.” 04:45:56:19 CU disembodied hands using antique can opener to open a can of peaches; CU can open cutting through top of can. 04:46:05:17 Two boys playing on a seesaw. 04:46:09:25 CU pitch bar tool inserted between train wheel and track; man cranks large lever to move freight car along track; CU disembodied arm pumps lever lifting antique car off ground. 04:46:28:06 VS man demonstrates basics of the lever using triangular piece as fulcrum and a long metal piece, man attaches 10 lbs. weight to one end of the bar and a 5 lbs. weight to the other end; man hangs various weights from both ends of the bar balancing the two by moving the fulcrum to various points along the bar; man demonstrates how a gear is constructed through numerous interlocking levers. 04:47:19:10 VS stop-motion animation of two wheels with paddles added one by one turning wheels into paddle wheels and then into interlocking gears; cuts to more sophisticated gear; cuts to metal gears; VS CU different types of machine gears, worm gears, bevel gears, lopsided gears. 04:48:16:05 Disembodied arm pieces together piece by piece a basic motor with various gear components; superimposed text appears labeling various parts; superimposed arrows identify different gears; motor begins to turn; cuts to CU car drives across frame; cuts back to crude motor; camera pans to Revolutions Per Minute dial which reads 100 rpm, camera pans to another RPM instrument dial which reads 30 rpm; CU crude model of gears in motor, superimposed arrows show flow of energy through the system. 04:51:01:07 CU RPM instrument dial reads 60 rpm; CU churning gears of

https://archive.org/details/0762_Spinning_Levers_04_45_20_00 · Public domain (Internet Archive)