Patent GB-334281-A (GB)
Abstract: 334,281. Rheinische Metallwarenund Maschinenfabrik, Schuler, H., and Gietmann, A. June 4, 1929. Selective distant control and signalling sysfems.-The adjustable member b, Fig. 1, of a fuze setting apparatus is set by a continuously rotating motor a', which is clutched in and out under the control of a distant station B, where the position of the member b is automatically indicated by a dial w<11> and a pointer w<12>. When a switch s at the control station is closed, a relay R' at a relay station C is connected to primary mains P +, P -, and closes the circuit from secondary mains S + S -, to a solenoid m<o>, which rocks a bell crank lever m<2>. This throws a. shaft m<6> and a clutch k<1> to the left. The shaft m<6> pulls a pin r<1> out of locking engagement with a hole in a disc r, and after this, the clutch k<1> being in action, the motor a<1> transmits rotation to the adjustable member b through gearing a<2>, a<3>, a<4>, a<5>, b<7>, b<8>, b<9>, b<2>, b', b<4> and b<5>, b<6>. The disc r is fast with the spindle b<10> of the gear wheel b<2>. While this movement proceeds, the pin r<1> rides in a spiral groove in the disc r, and its head slides in a radial groove in an arm h on the shaft m<6>, the midde part of the pin being guided by a bridge piece r<4> slidable radially along guides r<5>. More. over, while the disc r rotates, the holes therein cause a periodical rocking of a pawl w, which closes and opens the circuit of a solenoid w<5> thereby rocking the armature wF which transmits to the dial w<11> a movement corresponding to that of the adjustable member b. The observer at the control sta. tion stops this operation by opening the switch s when the dial w<11> indicates the desired setting. Rotation in the opposite direction is performed by a switch s<1>, relay R<2>, solenoid m<1> and bell crank lever m<3>, which slides the shaft m<6> to the left as before, but throws a clutch k<0> in action on the right instead of the clutch k<1> on the left. Motion is then transmitted to gear b<2> by geai b<1> in the opposite direction. During this reverse motion, another pawl w<0> causes the rotation of the dial w<11> in the opposite direction. While one switch s or s<1> is closed and one relay R, R<2> is in action, this relay cuts off at u' or u<2> the circuit of the other relay and thereby renders innocuous the closing of the other switch. If when the switch s or s<1> is closed the pin r<1> is not opposite a hole r<6>, the pawl w or w<0> cooperating with the same holes close contact u<7> or u<8> in circuit with the relay R<1> or R<2> through contacts u<5> or u<6> controlled by these relays, and keep the relay in action until the pin r' reaches a hole r<6> when the operation stops. The other rotatable member c of the fuse setting apparatus is rotated by the same motor a<1> through gearing a<2>, a<3>, a<4>, c<2>, c<3>, c<4>, c<5>, and c<6>, c<7> to impart tc the fuse the setting determined by the adjustment of the member b. Clutches p<2>, p<3>, are interposed by the transmissions from the motor a<1>. The bell crank levers m<2>, m<3>, may be operated by hand or keys t<1>, t<2>, and the member c may be operated by a, handle p on the spindle p<1> of the gear wheel c<2>.