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A mangle [1] is a mechanical laundry aid consisting of two rollers in a sturdy frame, connected by cogs and (in its home version) powered by a hand crank or by electricity. Mangles are used to press or flatten sheets, tablecloths, kitchen towels, or clothing and other laundry.
A roller coaster wheel assembly. The underfriction wheels are on the bottom. The three sets of wheels clamp onto the track. On a roller coaster train, the underfriction, up-lift, or up-stop wheels are a device to keep the train from jumping off the track under intense movement. [1] The design was patented in 1919 by John A. Miller. [2] [3]
Movements to any directions: blue: wheel drive direction; red: vehicle moving direction. a) Moving straight ahead, b) Moving sideways, c) Moving diagonally, d) Moving around a bend, e) Rotation, f) Rotation around the central point of one axle. A Mecanum wheel is an omnidirectional wheel design for a land-based vehicle to move in
1925 Robey tandem roller #42693, now owned by the Robey Trust [9]. The majority of rollers were of the same basic 3-roll configuration, gear-driven, with two large smooth wheels (rolls) at the back and a single wide roll at the front (in actuality, the wide roll usually consisted of two narrower rolls on the same axle, to make steering easier).
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With five multicolor play shapes, this foam fort building set will give kiddos plenty of ways to play. From a cozy couch to a castle and moat, their imagination is the limit.
Turned stools were the progenitor of both the turned chair and the Windsor chair. The simplest stool was like the Windsor chair: a solid plank seat had three legs set into it with round mortice and tenon joints. These simple stools probably used the green woodworking technique of setting already-dried legs into a still-green seat. As the seat ...
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