Electric motors : letters patent to Edward Henry Cradock Monckton, of Fineshade, Northamptonshire, for the invention of "Improvements in generating and applying the electric current and in producing motive power, and in the apparatus necessary for carrying the same into " : Sealed the 23rd February 1877, and dated the 28th November 1876.

  • Monckton, E. H. C. (Edward Henry Cradock)
Date:
1876
Catalogue details

Licence: Public Domain Mark

Credit: Electric motors : letters patent to Edward Henry Cradock Monckton, of Fineshade, Northamptonshire, for the invention of "Improvements in generating and applying the electric current and in producing motive power, and in the apparatus necessary for carrying the same into " : Sealed the 23rd February 1877, and dated the 28th November 1876. Source: Wellcome Collection.

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    Moncktoris Improvements in Electric Motors. a drum or cylinder made of non-conducting material, such as wood. Across the top of the periphery of this drum immediately between these metal rings are placed wires or pins, which are by preference inserted into the periphery of the drum, so as to lie flat and evenly with its surface. These wires are made to alternate the one with the other, the one proceeding from the metal ring on one side so as to 5 approach the metal ring on its opposite side, but leaving a space between them, the next wire or pin being similarly made to come from this last ring and approach without touching the first one, and so on alternately all round. The terminals of a coil on an electro-magnet are then inserted apart into a frame of non-conducting material, which is fixed over this revolving disc so that the terminals of the coils 10 on the magnets as they rotate come in contact simultaneously with two of these alternate pins or wires, negative and positive, lying across the periphery of the drum, and thus the poles are alternately changed, and an electric current is pro¬ duced. I prefer to adopt this method where batteries or substitutes for them are used, as by the facility afforded for rapidly changing the poles, as well as by the 15 close approximation of the magnet’s poles, the entire electric current is utilised,. Eighteenthly. I further improve the induction of my electro-magnetic machine, see Figures 13 and 20, by introducing a circular commutator on the outer edge of the axle supporting the rotating magnet, in addition to and on the same construc¬ tion and principle as the commutator which I place round this latter; this I place 20 in communication with the terminals of the coil on the fixed magnet, so that this commutator also in rotating causes an instantaneously consecutive commutation of the current to and from the poles of the fixed magnet, so that by passing the current consecutively or simultaneously, as the case may be, through both magnets a greater magnetic induction as well as a more continuous flow of the electric current 25 is produced. I further rotate my bar reel electro-magnet with semicircular poles curved inwardly over the coil between the semiglobular poles of a fixed permanent or electro-magnet placed facing, so that the coil on the rotating magnets is always at right angles to the poles of the fixed magnets, the axle of the former being secured to it at right angles to the centre of the magnet bar, and passing through the centre SO of its coil. Nineteenthly. I employ air and water in proportion of about 30 parts by space of air to from 2 to 5 of water forced simultaneously by pumps through a fine wire gauze into a tubular, by preference, receiver, where they come in contact in a vaporous form with red-hot platinum heated by a current generated by a battery 35 or a magneto-electric or thermo-electric apparatus, or otherwise, and utilize it for communicating power to an engine. I further employ similarly a mixture of air, coal gas, and vapour from water, and use the electric spark. Description of the Drawings. 40 Fig. 1, W, W, represents a section through two circular frames attached to a stand S, S, S, S, surrounded by either permanent or electro-magnets ], 2, 3, 4, 5, 6, &c. A is the axle formed of metal, and runs on an insulated bearing I, I, attached to these frames and stand. 45 Figure 2 represents an outside or bird’s-eye view from above of W, W, Fig. 1. Heie 1, 2, 3, 4, 5, 6, &c., represents permanent magnets arranged round their lespective frames F, F, F, F, and F, F, F, F,—D, d, d, cl, d; D represents a circular lion disc referred to above, which is secured to the axle A, B, and insulated from it ^ ^ ^ ^ie c^rcuhir frames sustaining the magnets are also insulated from 50 the stand, and the stand from the ground. The magnets 1, 2, 3, 4, 5, 6, &c., are so arranged that their poles are placed N and S, and S and N consecutively, so as to form a continuous magnetic circle from magnet to magnet, all round the wheel, lhe discs D, d, d, 6.1, cl, D, revolves almost in contact between these two circular frames ot magnets, so as to enter between and unite in one their respective poles 55 illustrating a new principle of construction. tigs. 3 and 4 show another form of constructing the same machine. Here the