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It is not possible to use a pointing machine to produce enlarged or reduced copies; the traditional instruments for this are a set of calipers or a three-dimensional version of the pantograph. [6] However, there is also a special version of the pointing machine that was used for mirroring, enlargements or reduced carving. [7]
Drafting pantograph in use Pantograph used for scaling a picture. The red shape is traced and enlarged. Pantograph 3d rendering. A pantograph (from Greek παντ- 'all, every' and γραφ- 'to write', from their original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical ...
In 1955, it helped set a new high-speed train record, as a Faiveley-equipped train exceeded 331 kilometres per hour. That year, Faiveley also introduced the first single-arm pantograph. This innovation helped the company to ensure its position as world leader in railway pantograph systems. [4] [5]
Car 4 has one PS33D single-arm pantograph, and cars 2 and 8 each have two PS33D single-arm pantographs (one used as a backup). Cars 1 and 10 have a wheelchair space (also car 4 in sets equipped with a toilet). Car 4 has a universal design toilet (in sets equipped with a toilet). Car 4 is designated as a mildly air-conditioned car.
The pantograph consists of two complete variable parallelograms ("d" and "e" on diagram): Base parallelogram: The base parallelogram is attached to two fixed pivot points at the far side of the base plate. The pivoting arms are supported at their midpoints by wheels which rest on the base and this part remains in a plane parallel to the base.
The Brecknell Willis Low Height pantograph is one of the four standard devices in use on British railway locomotives and multiple units and is a development of the standard Brecknell Willis High Speed pantograph. The Low Height pantograph is suitable for speeds up to 160 kilometres per hour (99 mph).
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