Patent GB-191018321-A (GB)
Title: Improvements in and relating to Turbines.
Inventor: SAYER ROBERT COOKE
IPC: F01D17/00
Filed: 1910-08-03
Granted: 1911-08-03
Abstract: 18,321. Sayer, R. C. Aug. 3. Oppositely - running rotor type; reversing; working - fluid supply; regulating; driving-mechanism, special applications of.-Oppositelyrunning rotors are geared together, and either may be geared by one of a series of electro-magnetic clutches to a shaft, which is thereby driven at different speeds in either direction. The working fluid is passed repeatedly through the turbine and through reheating-tubes. Additional inlets to rings of blades other than the first may be provided, controlled by hand-operated valves to give large torque at starting. Working fluid from the chamber b, Figs. 1 and 4, passes through valves b<2> to the innermost ring of blades c. or through valves b<3>, b<4> to other rings. The fluid acts on rings of blades c, e, g, i, and d, f, h, j, alternately, these rings being mounted on disks c e g i, d f h j, geared together by the wheel dfhj<2> mounted on the frame. Wheels cegi<3>, dfhj<3>, on these disks are thus driven in opposite directions and a wheel r can be made to mesh with either of these by means of electro-magnets. The wheel r drives the pinion s which drives the wheel u on the shaft a. The shaft a is shown in Fig. 1, carrying road wheels a<4> carried on transverse springs a<5> on hub spiders a<6>. After leaving the last ring of blades j, the pressure fluid is forced by connected piston-like members n<2>, reciprocated radially by studs in cam-grooves m<2> so as to produce an annular chamber of varying capacity, through pipes p<2>, in which it may be reheated by electric or other means, to the chamber b. Leakage of fluid may be made good by auxiliary means. The wheel r is moved to engage the toothed wheel on either rotor by the magnet r<4>, and is clamped in position by the magnets r<5>, r<6>. As shown in Fig. 14, the magnet r<4> has two coils r<40>, r<43>, which co-operate with the coils r<46>, r<49> on the tubular core r<3>, so as to move the core r<33> to the right or left of its normal position according to the direction of current in the coil r<4>. If the core r<3> moves to the right, the wheel r is moved towards, and held by, the magnet r<5>, and the sliding spindle s<4> is pushed by the core r<3> so as to cause the wheel s to engage the wheel r, in which position it is held by the magnet r<7>. If the core r<3> moves to the left, the wheel r is moved towards, and held by, the magnet r<6>. A single-wound solenoid r<4> may be used and the windings un the core r<3> may be dispensed with. The circuits to the electro-magnets are controlled by a switch as shown in Fig. 9. A reversing-switch in the circuit of the magnet r<4> is mounted in a box t<13>, and contacts are arranged on the base of the switch to engage contacts on the box when the switch box is in the position shown in full lines. The switch is arranged to pivot on a vertical pin t<15> so as to engage a number of sets of contacts in different positions on the base corresponding to different gears of the turbine. In each position, the member y completes the circuit of the magnet r<7>. The switch is held in each position by a latch x, which also completes a circuit to the magnets r<6>, r<7>.