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A robotic lawn mower is an autonomous robot used to cut lawn grass. A typical robotic lawn mower (in particular earlier generation models) requires the user to set up a border wire around the lawn that defines the area to be mowed. The robot uses this wire to locate the boundary of the area to be trimmed and in some cases to locate a recharging ...
LS8-st: self-sustainer version, differs from the previous LS8-t in the same ways as the LS8-s; additionally, an electrically driven spindle and a DEI-NT engine control unit supersede Rolladen-Schneider's hydraulic engine extraction system and the original Walter Binder controller. (11 built, together with LS8-s)
The lawn mower was invented in 1830 by Edwin Beard Budding of Stroud, Gloucestershire, England. [1] Budding's mower was designed primarily to cut the grass on sports grounds and extensive gardens, as a superior alternative to the scythe, and was granted a British patent on August 31, 1830.
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The Allen Scythe does not resemble a hand scythe but serves the same purpose. The engine drives a 2-foot-wide (0.6 m) or 3-foot-wide (0.9 m) or 4ft wide toothed blade sliding back and forth horizontally across stationary teeth to produce a scissor action, and also drives two large wheels for forward travel.
NEW YORK (AP) — Tesla knocked roughly a third off the price of its “Full Self Driving” system — which can’t drive itself and so drivers must remain alert and be ready to intervene — to ...
Self-tapping screws can be divided into two classes: [3] those that displace material (especially plastic and thin metal sheets) without removing it, known as "thread-forming" self-tapping screws, and self-tappers with sharp cutting surfaces that remove the material as they are inserted, termed "thread-cutting" self-tapping screws.
Mechanical or "wind vane" self-steering started out as a way to keep model sail boats on course.Before the advent of radio control, model yacht racing (started before WW1) was typically contested on long narrow ponds, and the number of stops along the banks was counted as a penalty in the final result.