Patent GB-189814562-A (GB)
Title: Improvements in Devices for Transferring to a Distance and Registering the Movement of Rotating Parts.
Inventor: BASENACH NICOLAUS
Filed: 1898-07-01
Granted: 1898-10-01
Abstract: 14,562. Basenach, N. July 1. Compasses, magnetic.-Relates to apparatus for transmitting the movements of a compass card to indicating-cards situated at different places and to a registering-apparatus. The card, Fig. 1, is provided with a series of metal spikes x, x, x, tipped with balls of platinum and connected to an aluminium ring. These spikes are set 'vernier-wise' with respect to two sets of terminals :-(1) c, c, c connected in series to the poles y of the secondary circuits of three transformers A', A<2>, A<3>, and (2) c<1>, c', ... c<2>, c' ... c<3>, c<3> ... connected respectively to the other poles z. One only of the transformers A<3> is shown, with its primary circuit a<3> and secondary b<3>. Suppose now the card, turning in the direction of the arrow, comes into the position shown, a stream of sparks will pass at c<3> and c and a small normal current passing through the primary circuit a<3> will rise in intensity and energize the magnet f<3>, with which it is in circuit, so as to lift the armature e<3> and close circuit 3 for the battery B through the magnet h<3>. Little magnets g<1>, g<2>, g<3>, placed in series, retain the armatures i<1> i<2>, i<3> in the position into which they have been drawn by the magnets h<1>, h<2>, h<3> until again displaced by such magnets. Assuming, then, that the armature i<3> is resting on the terminal l<3> when the magnet h<3> is energized, the armatures i<1>, i' will be drawn to the magnet h<3> and the current will pass along the armature i<3>, terminal l<3>, and wires l to the magnets n of the various indicating and registering devices, which are all connected in series. The current returns by the wire o. The rotation of the card continuing in the same direction, the magnet h<2> will next be energized and the current pass by the armature i<2>, terminal l<2>, and wires l again to the magnets n, and so on. When the card reverses its motion, the currents will be led to the terminals k<1>, k<2>, k<3>, and so pass to the magnets m of the indicating and registering mechanism. The references f<1>, el, 1, l<1> and f<2>, e', 2, l<2> relate to parts connected with the transformers A<1>, A<2> corresponding to the parts f<3>, c<3>, 3, l<3> connected with the transformer A<3>. Fig. 2 shows the way in which the indicators are worked, the dials being turned in one or other direction, according to the magnet m or n energized, by pawls on an armature engaging ratchet-wheels with teeth turned in the opposite directions. The actual mechanism shown, however, is a similarly-actuated three-pole cut-out by means of which, as soon as the requisite movement has taken place, the primary circuit of the transformer in action is interrupted, the sparking of the secondary circuit ceases, and damage to the card terminals is avoided. The registering-mechanism consists of a pencil tracing on a strip traversed by clockwork. The pencil is carried by a screw which is turned in one direction or the other according to the magnet energized.