GB237947A - Improvements in or relating to means for effecting engagement of gear or clutch elements - Google Patents

Abstract

237,947. Miller, J. A., and Miller, W. D. April 7, 1924. Clutches, claw.-To facilitate engagement one of the elements is free to rotate in either direction against spring pressure relative to a dog member fixed upon its shaft, springs carried by the element and the dog member being partly compressed as the element is moved through an arc of a circle to bring stops thereon into engagement with the dog member to take up the drive and also being adapted to return the parts to a neutral position when the gears are disengaged. The gear element is mounted upon a bearing boss formed upon or attached to the dog member. The variable-speed gear described in Specification 183,675 has a driving member A and a driven member B, B<1> loosely mounted upon an extended boss C of a dog member D keyed upon the shaft E, the member B, B<1> being free to rotate through an arc F, Fig. 3, its motion being limited by stops G formed thereon, against coiled springs arranged upon a ring H mounted in brackets J on the member B, B<1> and in grooves K in the dog member. In a modification for dog clutches in planing machines a clutch member is mounted on a boss at each side of the dog member and is adapted to engage a corresponding clutch member formed upon the boss of a gear wheel or the like to be driven, longitudinal movement being imparted to the dog member in either direction upon a key splined on the driving shaft.