Patent GB-190605325-A (GB)
Title: Improvements in and relating to Electro-magnetic Motors for Toys and other purposes.
Inventor: POTTER JOSEPH LEWIS
Filed: 1906-03-05
Granted: 1906-12-31
Abstract: 5325. Potter, J. L. April 3, 1905, [date applied for under Patents Act, 1901]. Toys, driving-mechanism for.-A combination case and frame containing a battery cell supports on the outside an electro-magnetic motor, which consists of a number of armatures successively attracted by one or more electro-magnets, and is suitable for use as a toy or for driving other toys. In the form shown in Figs. 1 and 3, the combined case and frame comprises a brass or other metal shell C of inverted U- shape secured to a wooden base B,and having middle portions D, D<1> partly severed therefrom and bent out at right-angles to the base to support the driving-shaft E. The shaft E is provided with a flywheel f, pulley e, and crank arm F, to which is pivoted a connecting. rod M moving in a guide m stamped out of the shell C. The armatures L, L', L', provided with counterbalancing ends j and mounted upon a common pivot i, are preferably prevented from coming into actual engagement with the electro-magnet cores J, J<1> by means of an horizontal stop K formed from a portion of the shell. The armatures L', L<2> are provided with projections k<1>, Fig. 5, of different lengths, which, together with the armature L, rest upon a projection l upon the connecting-rod M, so that the three armatures are successively attracted by the electromagnets. A dry battery G rests on its side upon the base B, which is provided with an anchor-piece H to which the zinc element g of the battery is connected, the carbon electrode being situated at h. A make-and-break switch interposed in the circuit of the electro-magnets J, J' comprises a cam o on the shaft E and brushes P, P<1> secured to the shell C. In the arrangement shown in Figs. 6 and 7, one electro-magnet J<2> only is employed, and the armatures L<3>, L<4>, L<5>, provided with end projections of different lengths, are pivoted at one extremity q and pass through guide-slots r in the portion D, motion being, transmitted from the armatures to the crank-shaft E<1> by means of a rod M<2> provided with a projection l<1> and links N, M<1>. A modified construction is shown in Figs. 9, 11, and 12. The battery C is inverted with respect to its position in Figs. 1 and 3, the electrode g being above the electrode h. An extension of the anchor-piece H<1> is secured to the base B, and the top end of the piece H<1> is forked to receive the binding-screw h<1> of the electrode h. The cores of the electro-magnets J, J<1> are supported on a U-shaped yoke I projecting from the base B, and their tops are provided with extension plates J<3>, J<4>. A metal piece x secures the electro-magnets to the shell C. A stop k' from the armatures is fixed to the spool of the electromagnet J. The armatures L<6>, L', L<8> are mounted upon a common pivot, as before, the armature L<6> corresponding to the armature L of Fig. 1, while the armature L<7> has an attached projection 22, Fig. 16, extending across the sides of the armature and acting as guides for the other armatures, as shown in Fig. 12. The armature L<8> is provided with a depending piece Q, Fig. 15, extending under the armature L<6>, as shown in Fig. 12, and connected with the shaft E through a rod M<3> and crank F. The make-and-break switch consists of a cam o' on the shaft E, which engages with a brush P<2> supported on insulating-material 19 and placed in connexion with the terminal g<1> of the battery through a spring switch R. The other terminal h<1> of the battery is connected to the shell of the case through the base of the anchor-piece H<1>, the electro-magnets J, J<1>, and a screw a<1>. When the spring R is moved into contact with the brush P', the electro-magnets will be energized, and will draw down the armatures L<6>, L<7>, L<8> in succession, until stopped by the stop K<1>, or by the cores if no stop is provided.