GB190619486A - Improvements in and relating to Electro-magnetic Devices for Doing Work on any Restrained Body. - Google Patents

Abstract

19,486. Belliss & Morcom, and Macgregor, R. Aug. 31. Electro-magnets.-The armature of an electromagnet is connected through a spring &c. to a member for operating railway points and signals, for starting and stopping an engine, or for opening a valve to admit air to a condenser, this connexion allowing the armature to apply an impulsive stroke to the member. The solenoid winding a is mounted in a casing d, the armature c being guided into the electro-magnet through a lined opening in this casing. At the other end of the electro-magnet, a pole-piece e serves to further attract the armature, a stud of non-magnetic material preventing contact. To a cross-head o carried on the armature, springs j<1> are pivoted and complete the connexion to the operating-member n. Alternative arrangements of spring connexion may be used. A duplicate electro-magnet, Fig. 2, wound so that the two bobbins a<1> form opposite poles, may be employed in connexion with a duplicate armature, both bobbins carrying pole-pieces e<2> at their other extremities. The magnetic circuit is completed in the case of armature and electro-magnet by magnetic material. The pole-pieces may be fixed to the electro-magnets or mounted on a carrier, which, controlled by a spring, allows them to enter into the electro-magnets and further strengthen the attraction on the armature.