Patent GB-191400198-A (GB)
Title: Improvements in or relating to Apparatus for the Control from a Distance of a Number of Guns from a Single Transmitter.
Inventor: GIRARDELLI RICCARDO
IPC: F41G5/06
Filed: 1914-01-03
Granted: 1914-06-18
Abstract: 198. Girardelli, R. Jan. 16, 1913, [Convention date]. Mountings. - Relates to apparatus for adjusting the directions of two or more guns. According to the invention, the guns are simultaneously moved in azimuth by an electric distant - control apparatus, and means are provided whereby the elevation of the primary gun automatically adjusts two sides of a mechanical triangle and determines the concentration angle for the second gun. This angle is applied to the second gun by an electric transmitting-switch, which is geared to one side of the triangle and exercises an independent control on the training-motor of the secondary gun. Separate apparatus is provided for each additional gun. Fig. 1 is a diagrammatic plan, partly in section, and Fig. 2 a sectional elevation of part of the apparatus. The training-motors A, B of two guns are both controlled by a distant transmitter having the features described in Specification 6496/12, [Class 38 (iii), Electric motor control systems &c.], through conductors C, C<1>. The motor B is a double one and has two independent rotors, the second of which is controlled by a transmitting-switch g<2> at the other (or primary) gun station. The two rotors of the motor B act on the training-shaft U through differential gearing. The lines s-s<1> and w-w<1> represent the directions of the two guns when they are trained on to the same target, the angle # made by the secondary gun 2 with a datum line being equal to the angle a made by the primary gun 1 with the same line together with the concentration angle, which is imparted to the gun 2 by the switch g<2> and second rotor of the motor B after the first rotor has imparted the direction @ to the gun. The spindle R of the switch g<2> is geared to a sector h<2> on a pivoted arm H, which forms one side of a mechanical triangle 1<1> 2' 3', the side 1<1>-3<1> of which is fixed. Since, in the triangle, the points 1<1>, 2<1> represent the positions of the guns 1, 2 and the point 3<1> the position of the target, it is necessary to adjust the length of the side 1<1>-2<1> in accordance with the varying linear scale of the fixed side 1<1>-3<1>, which corresponds to the variable range of the target relatively to the gun 1. As the range represented by the side 1<1>-3<1> increases, the scale decreases, and therefore the length of the side 1<1>-2<1> is inversely proportional to the range. The side 1<1>-2<1> is formed by an arm f<3> carried by a vertical spindle F<1>, pivoted in the frame G of the transmitting - apparatus and rotatable around the axis 1<1> by a worm-wheel F and worm e<2> driven by the training-motor A, so that the arm f<3> always moves through the same angle as the gun 1. A slider J is adjustable along the arm f<3> by a cam N, pivoted at f<4> in a slot in the spindle F<1> and rocked by links n<1>, Q, P connected electrically or otherwise to the elevating-gear of the gun 1. A pin i<1>, forming the point 2<1> of the triangle and mounted on the slider J, engages a block K slidable in a guide h<1> in the arm H. When, therefore, after the guns have been simultaneously turned into the direction o., the gun 1 is elevated in accordance with the range, the cam N is rocked and the slider J moved along the arm f<3>. The sides 1<1>-2<1> and 2<1>-3<1> of the triangle are thus adjusted, and the angular movement of the side 2<1>-3<1> is imparted to the spindle R of the transmitting- switch g<2>. The second rotor of the motor B then imparts the additional (positive or negative) training to the gun 2 to direct it on to the same target as the gun 1.