GB821052A - Improvements in or relating to electro-magnetic couplings, dynamometers and brakes - Google Patents

Abstract

821,052. Electromagnetic couplings, brakes and dynamometers. WELLMAN SMITH OWEN ENGINEERING CORPORATION Ltd. Feb. 4, 1957 [Feb. 9, 1956], No. 4134/56. Class 35. An electromagnetic coupling dynamometer or brake comprises a first magnetic member 1 acting as a field member of ring form, a second magnetic member 18 disposed within and spaced from the latter and having its outer peripheral surface complementary to the inner surface of the first member 1 in which outer surface extend slots 22 from one end of the surface to the other, the two members being relatively rotatable and connectable to driving and driven members, an exciting winding 16 to produce a toroidal magnetic flux through the magnetic members, and a magnetic annulus 7 to complete the magnetic circuit through the members and disposed with the radially outer part of one end face opposite the radially outer part of one end face of the first member 1 and with the radially inner part of the one end face opposite an end face, disposed in a radial plane, of the second member 18. Each of the two magnetic members in prior Specifications 671,314, 784,099 and 812,141, to which the invention is related are made in two parts, and by using one part of each such member as the magnetic members 1, 18, together with the annulus 7 a machine of smaller capacity than those of the prior Specifications is provided. In general construction the machine otherwise is similar to those of the prior Specifications.