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Whippletree (mechanism)
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A whippletree, or whiffletree, is a mechanism to distribute force evenly through linkages. It is also referred to as an equalizer, leader bar, or double tree. It consists of a bar pivoted at or near t
A set of whippletrees or leader-bars for the two leaders of a four-horse team
A set of whippletrees or leader-bars for the two leaders of a four-horse team
A standard automobile windscreen wiper uses whippletrees in compression to distribute the force of the wiper arm evenly across the blade.
A standard automobile windscreen wiper uses whippletrees in compression to distribute the force of the wiper arm evenly across the blade.
Achteraanzicht driespan weilandsurfen
Achteraanzicht driespan weilandsurfen
IBM 2741
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The IBM 2741 is a printing computer terminal that was introduced in 1965. Compared to the teletypewriter machines that were commonly used as printing terminals at the time, the 2741 offers 50% higher
Whippletree (mechanism)
…have thin metal tapes wrapped around them to convert rotary to linear motion. One widely used application was in the IBM Selectric typewriter (and the IBM 2741 derived from it), where the linkages summed binary mechanical inputs to rotate and tilt the type ball. This type of computing method was also used for…
IBM 2741 terminal with APL keyboard
IBM 2741 terminal with APL keyboard