GB Patent: GB-191,322,435
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| Improvements in Band Brakes Particularly Applicable to Electrically Operated Band Brakes for Electric Cranes and the Like
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Patentees:
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| Robert Stafford McLeod (exact or similar names) - Didsbury, Lancashire County, England |
| Henry Bertram Whitmore (exact or similar names) - Brereton Cottage, Cheshire County, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 06, 1913 |
| Granted: |
Oct. 05, 1914 |
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Patent Pictures:
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Espacenet patent
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Joel Havens
"Vintage Machinery" entry for Lancashire Dynamo & Motor Co., Ltd.
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Description: |
| Abstract:
In band brakes for electric cranes &c., of the kind in which the bands are connected to tightening-devices limited in their movement by stops so that the brake acts equally well for either direction of rotation ot the drum, the ends of the band are coupled to two bars connected to two cores of a solenoid, which, when energized, overcome the action of a spring or weight normally applying the brake. Fig. 2 shows a brake in which the ends a3, b3 of the bands are connected to bars a4, b4 attached to an applying- spring G4, and to two releasing solenoid cores h1, h2 which are drawn together when energized. Stops j1, j2 limit the movement, and the ends of the band are carried by links a5, b5. In modifications, the spring is replaced by a weighted lever fulcrumed on the bar a4 and connected to the bar b4, and the solenoid may, in such case, be arranged in connexion with the weight. In cases where multiphase alternating currents are used, a number of solenoids may be provided, being connected in the circuits of the several phases. Compensating for wear may be effected by forming the band in two parts, and connecting the parts by screw and nut c2, c3. |
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