GB411282A - Improvements in or relating to electromagnetic motors - Google Patents

Abstract

411,282. Motors. JONES, R. O., Royal Aircraft Establishment, South Farnborough, Hampshire. May 16, 1933, No. 14169. [Class 35.] Motors with unwound iron armatures.- In order to render a motor of the type comprising a magnetic disc having a toothed rim which engages with a fixed tooth ring, and mounted so as to be capable of a swashing motion which is imparted to it by a series of magnets, suitable for a repeater motor the disc is so mounted that the teeth on the side which is in operation are fully engaged, while the clearance on the other side is so small that the two racks can never be completely disengaged. In the arrangement shown the disc 9 is mounted on a ball-and-socket joint 15 carried on a spindle 16 which can be adjusted longitudinally by means of collars 20 and 21. The disc 9 has a rim 12 formed with equilateral teeth 25 engaging with similar teeth on a fixed ring 6 to which a series of pot magnets 1 are attached. The upper faces of the magnets may be slightly conical to fit the motion of the disc 9. The rotary motion of the disc 9 is imported to the spindle 16 by means of an arm 26 on the disc engaging a slotted arm 28 on the spindle. A dial 31 is attached to a spindle 35 passing through the spindle 16. Discs 39, 34 on the spindle 16 and the dial 31 are held in frictional engagement by a spring 36 and a handle 37 is provided for adjusting the dial on the spindle.