GB184562A - Improvements in commutators or distributors for use in connection with electric ignition systems - Google Patents

Abstract

184,562. Baker, F. W. May 12, 1921. Rotary distributors; contacts.-Rotary distributors of the type in which a rotating brush moves over firing-segments in an internal annular raceway have a separate continuous or segmental earth ring at the side of the firing-segments arranged also to be wiped over by the rotary contact, the firing-segments being of maximum angular dimensions. Firing-segments a<1>, a<2>, a<3>, a<4> are mounted within and insulated from a metal casing c, each adjacent pair of segments being separated by a narrow gap a<5> which may be filled with insulating material, the gaps a<5> being shaped obliquely so that the rotor brush in passing over a gap is momentarily in contact with both adjacent segments. At the side of the firing segments is disposed a metal earthed ring b which may be continuous or segmental, in the latter case the gaps between segments being similar to and staggered in relation to the gaps a'. The two trachs are coned internally and wiped over by a conical metal brush e loosely mounted on a pin e<1> projecting from a bracket e<2> secured to the distributor shaft f. A spring e<3> presses the brush into engagement with the double raceway.