Patent GB-191227312-A (GB)
Title: Improvements in Electrical Devices for the Distant Transmission of Positions.
IPC: G05D3/12
Filed: 1912-11-27
Granted: 1913-11-20
Abstract: 27,312. British Thomson-Houston Co., [Allgemeine Elektricitõts Ges.] Nov. 27. Mountings.- Relates to electric distant-control systems applicable for directing ordnance. According to the invention, the system is divided into two groups, one of which provides for coarse regulation and the other for f i n e regulation, while the number of control positions is equal to the product of the numbers of the conductors in the two groups. In the arrangement shown in Fig. 2, the transmitter is divided into two parts g<1>, g<2>, the part g<1> having three contacts I, II, III connected by three conductors d' to the brushes I, II, III of the receiver e. The brushes are adapted to engage movable contact-bars k, k<1>, and contacts 1, 2, 3, 4, 5 inserted between the bars k, k<1>, which are separated by a distance equal to that between the engaging brushes. The contacts of the receiver are connected to similar fixed contacts of the second part g<2> of the transmitter through conductors d<2>. The part g<2> of the transmitter is provided with two movable contact-bars s, s', which are connected to the bars k, k' through flexible leads p, p<1>. The positive lead of the supply circuit is connected to the movable arm of the part g', and the negative lead is connected through the operating- coils f, f<1> to the conductors p, p<1>. In the position shown, neither of the operating-coils is energized ; but if the part g<2> be operated to place the contact 1 in engagement with the contact-bar s and contact 2 adjacent to the insulating portion between the contact-bars s, s', then the coil f will be energized and the receiver operated until the brush II engages the contact 2, when the circuit of the coil f will be broken. In the arrangement shown in Fig. 3, the part g<1> of the transmitting-device has five brushes I, II, ... V, and is connected to the part g<2> having four brushes by gearing having the ratio of 2 to 5. The brushes of the part g<1> are connected to similarly numbered brushes of the receiver e, the contact segments k, k<1> of which are separated at one point by a space provided with insulated contacts 1, 2, 3, 4 connected by conductors d' to similarly numbered brushes on the part g<2>. The conductors p, p<1> are connected to brushes 6, 6<1> on the part g<2>. In the position shown, the circuit is broken at the brush 1 of the transmitter part g<2> ; but if the crank of this part be moved to put the segment into contact with the brushes 1, 6<1>, then the field f<1> of the operating-motor m will be energized as follows:- crank of part g<2>, brushes III, through one of the leads d<1>, contacts 1, through one of the leads d', segment s', brush 6<1>, lead p<1>, and field winding f<1>. The motor continues to rotate until the brush III is on the contact 2 of the receiver e, when the circuit of the motor is broken at the contact 2 of the transmitter g<2>. Various control positions are obtained by varying the position of the cranks of the parts g<1>, g<2>. In the modification shown in Fig. 6, the receiver is divided into two parts e<1>, e<2>, and the space between the contact segments k, k<1> is provided with an insulated contact k, equal in length to the brush spacings of the receiver part e<1> and connected to the crank of the part g<2> of the transmitter. The part g<2> is provided with brushes 1, 2, ... 5 connected to similarly numbered brushes of the receiver part e', which is provided with additional brushes 7, 7<1> connected through resistances w, w<1> to the separate terminals of the field windings f,f<1> of the exciter h of the dynamo a supplying the operating-motor m. The transmitting parts g<1>, g<2> are mechanically connected in such a manner that, during one revolution of the part g<1>, the part g<2> rotates through one contact division, and the receiving parts e<1>, e<2> are connected so that, when the part e<2> makes one half of a revolution, the part e rotates one half of a brush division. In the position shown, the supply circuit to the fields f, f is broken at the brush 3 of the receiver part e<2>, If the crank of the part g' be moved on to the contact 4, the circuit of the field f<1> will be completed as follows :-crank of part g<1>, contact III, one of the leads d<1>, brush III, contact segment k1, lead o, crank of part g<2>, contact 3, one of the leads d<2>, brush 4, contact segment k<1>2, brush 7<1>, resistance w<1>, and field winding f<1>, and the motor m rotates until the insulating portion between the segments k2, k<1>2 comes under the brush 4. Vatious control positions are obtained by varying the positions of the cranks of the parts g<1>, g<2>. The system may be employed to control the energization of relays controlling the direction of rotation of the operating motor m.