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The principal follows :—

grades and their spheres of use are as

Normal current

Type. density, amps.

-------------- per sq. cm.

Sphere of Use.

Battersea Carbon Brushes :

Link-A. - - 6’5

Link-B. - - 8

Link-C. - - 5’5

Medium hard brush with good lubricating qualities ; for all standard voltages, but specially adapted to machines from 0'200 volts.

Graphitic brush, medium soft, having low co-efficient of friction. Suitable for low voltage generators and boosters, also for traction motors with mica grooved out.

Standard hard brush for machines of about 500 volts. Suitable for traction motors working under normal conditions.

Battersea Carbon Turbine Gland Rings.

These rings are mechanically very strong, have the highest lubricating qualities, and do not disintegrate under the severe conditions which obtain in the modern steam turbine. Extensive practical tests have been carried out with Battersea carbon rings for this work, and it is found that with a suitably-designed gland the rings may be arranged so that they just bear upon the shaft, and thus make a practically steam-tight joint without wearing themselves to any appreciable extent, and causing absolutely no wear of the shaft.

Battersea Type Lightning Arrester Resistances and Over-pressure Discharge Apparatus.

These replace liquid and carbon rod resistances, and consist of slabs of highly insulating fireproof material, in the top surfaces of which are grooves as shown in the accompanying illustration of a standard slab measuring 30 cms. X 30 cms. X 4 cms.

^ 4210,

H

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Le texte affiché peut comporter un certain nombre d'erreurs. En effet, le mode texte de ce document a été généré de façon automatique par un programme de reconnaissance optique de caractères (OCR). Le taux de reconnaissance estimé pour cette page est de 99,54 %.

La langue de reconnaissance de l'OCR est l'Anglais.

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