Patent GB-190207115-A (GB)
Title: Improvements in and connected with Friction Clutches or Couplings.
Inventor: LORIA HOWARD DIEUDONNE
Filed: 1902-03-24
Granted: 1903-02-05
Abstract: 7115. Loria, H. D. March 24. Clutches.-Relates to friction clutches applicable for the driving-gear of boats, motor cars, &c. Two reversed female cones b, e are secured by means of a disc c on the driving-shaft a, and two corresponding male cones g, h are mounted on feathers on the driven shaft f, which also carries, free to rotate on the sleeve 30, a spur-wheel This wheel has screw-threads of opposite hand cut on its bosses, to engage with nuts formed in the bosses of the cones, so that, when it is turned in one direction, the cones are drawn together and into frictional contact with the cones b, e, and, when it is turned in the other direction, they are forced apart. The rotation of the wheel is effected by pinions m, the spindles of which are free to slide through the cones and carry on their ends conical frictionwheels p, q. Normally, the springs y press the spindles to the right and the wheels p into contact with the annular surface r of the disc c, whereby, as long as the disc is rotating faster than the cones g, h, the wheel is turned to force the clutch into action. To disengage the clutch, the collar u is pressed to the right by the lever t and, acting through the collar v, which rotates with the shaft, and the levers w, x, presses the wheels q into contact with the fixed track s, at the same time drawing the rollers p out of contact with the surface r. The wheel is then rotated in the opposite direction and the cones are moved apart ; when they have proceeded so far that the cone h comes into contact with the wheelsp, the spindles are moved endways and the wheels q are thrown out of action. The collar u, which does not rotate, may be provided with a stop-screw 10 and with lubricating-passages 28. The fork t may be operated from any desired point, electrically or otherwise. In the electric arrangement shown in Fig. 3, 17 and 22 are electromagnets, either of which may be placed in circuit with the battery 23 by means of a switch 26. When the magnet 17 is energized, the lever t is turned, to disengage the clutch, by means of a bar 16, on which is the armature 14, and a spring 12 ; the catch at the end of the bar snaps over a catch on the armature lever of the magnet 22, whereby the clutch is held out of action. When the magnet 22 is energized, the catches are unlocked and the clutch is thrown into action by its springs. In a modified arrangement, the movements of the sliding-spindles of the pinions are produced by electromagnets. Fig. 4 shows another arrangement for working the pinions m ; small pinions on the ends of their spindles engage with an internal toothed - wheel s ; this is mounted loose on the shaft and is coupled to the boss of the cone g by a coil spring y, which tends to turn it in the direction to apply the clutch. The clutch is disengaged by applying a band brake 41 to the boss v of this wheel ; the rolling of the pinions inside it causes the rotation of the pinions m ; at the same time the spring y is wound up. The rotation of the wheel in relation to the shaft is limited by a pin carried by it and the claw 42 of the collar u, which rotates with the shaft ; when these comes into contact the wheel is carried round in spite of the brake. The wheel is held in this position on the shaft by the engagement of radial teeth 18, 19 on the wheel and collar respectively, the collar being held up to the wheel by the spring 12, so that in order to set the clutch in action not only must the brake be released but the collar u must be moved to the left by means of the lever t. A modification of this arrangement is shown in Fig. 9, where the brake wheel is secured upon a sleeve k which passes through one of the cones and is formed with screwthreads, for moving them together or apart, and with teeth 18 to engage with teeth on the collar u.