Patent GB-530911-A (GB)
Title: Improvements in and relating to targets
IPC: F41J5/052
Filed: 1939-07-05
Abstract: 530,911. Sectional target. GOB, R. July 5, 1939, No. 19627. [Class 20 (i)] A sectional target with automatic indicating apparatus, comprises a cone composed of as many rings as there are rings in the target disc, a member composed of a plurality of separate sectors the joints between which are covered, and means actuated by movement of the parts struck by the bullet to actuate electrical indicating circuits for indicating the ring hit and the position of the hit. The apparatus comprises a casing A, a stepped cone B, a sectional ring C, an electrical contact device D and an indicator F. The rear end of the casing is enlarged to form a chamber for collecting the spent bullets and contains a plate a on which the target sections are mounted. The bull is formed by the point of the cone 12 and is spring mounted within the sleeve f; the first two conical rings 11 and 10 are also spring mounted on the sleeve but the other ring sections 1-9 are relatively fixed with spaces between, the distortion of each ring under impact causing spring-actuated plungers i to actuate electrical contacts in the contact box D to give an indication of the ring section struck. The conical sections may have removable front spider portions h as shown in Fig. 9 to which the front end of the plunger i is secured. The position indicating section C of the target comprises sectors K, L, &c. Fig. 3, the gaps between which are closed by pivoted sector plates Q, these sectors being carried by supports l from the rear plate a. These sectors contact with levers K' through spring rods n so that if one sector is hit, the corresponding lever is actuated, whereas if a cover plate is hit, the two adjacent sectors and corresponding levers are actuated. The pusher plungers i as well as the levers contact with switch rods p, Fig. 5, which are under the influence of springs o, and on each of these rods is mounted a ring r upon the periphery of which a locking spring s normally bears. The locking springs are connected to intermediate contacts u lying between upper and lower contacts t, v, and when the locking spring lies on the periphery of the ring r the contacts u and t are touching. On a ring or sector being struck the corresponding rods p are actuated and the locking spring drops to the rear of the ring thus preventing the return of the rod, and causing the contacts u and v to touch and so indicating the result of the firing. The contacts are reset by a bar w on a lever x being actuated by a spring lever y and an electromagnet z. If more than one ring is struck, the result shown on the indicator is that only for the highest number of ring section ,and this result is attained by connecting the contacts to the positive and negative mains as shown in Fig. 6, connecting the upper contact t of each higher section to the intermediate contact of each lower section and the intermediate contacts of the highest to the positive and the intermediate of the lowest to the negative. This Figure shows the position when rings 10 and 11 are both actuated but the current through contacts for ring 10 is short circuited through contacts for rings 11 and 12. The giving of multiple signals may also be prevented by mechanical means comprising switch plate S, Fig. 11, of various sizes adapted to contact with fixed lower and pivoted upper switch plates T and U respectively, the arrangement being that the larger plate being moved between the contacts automatically prevents the next lower plate from effecting contact. The position indicating target C may comprise pivoted or sliding sector-plates the joints between which are covered by triangular bars, so that a greater number may be used to give a more accurate indication. In this case the circuit of connections is shown in Fig. 15, with relays Y to maintain the closed circuit for the indicators after the target contacts have again been broken, until the switch Z is operated.