Patent GB-495717-A (GB)
Title: Wringers
IPC: D06F45/18
Filed: 1937-05-20
Abstract: 495,717. Wringers; machinery guards. TRIGGS, W. W. (Lovell Manufacturing Co.) May 20, 1937, No. 14036. [Class 138 (ii)] [Also in Group XXIV] Relates to means for quickly releasing the pressure between, or stopping the drive to, the rollers of a wringer in case of emergency. As shown in Figs. 3 and 6, the clutch 40 is moved along the vertical drive shaft 39, for transmitting the drive from this shaft to one or other of a pair of bevels 37, 38 which mesh with a bevel 36 driving the lower roller shaft 7 through a coupling 35, by means of a pin 45 eccentrically mounted on a disc 46 which may be rotated by a hand-lever 48. The disc is provided with an arm 55 connected by springs 54 to a plate 51 which is caused to slide to the left or right according to the direction of rotation of the disc 46, thereby moving one of two projecting pins 50 into locking engagement with a corresponding recess 49 in the disc and so holding the clutch in one of its driving positions. Actuating bars having downwardly projecting lips adjacent the lower roller extend longitudinally below the nip of the rollers and are secured to pivot rods 27 which extend through the side walls 3 of the wringer frame into the gear casing 34. The bars may be rotated by the operator or are automatically rotated by the clothes wrapping round the lower roller. Plates 53 secured to extensions of the pivots 27 engage apertures 52 in the sliding plate 51 so that, on rotation of either bar in either direction, the sliding plate is moved back into its mean position and the stressed spring 54 rotates the disc to its centre position, thereby moving the clutch to neutral. The bars extending along the roller may also actuate the pressure-release mechanism which operates by unlatching the top bar 4 of the wringer frame. The plate 51 may alternatively be restored to its mean position to declutch the drive by the operator depressing a plunger 59 to which is secured a cam 57a engaging cam surfaces 56 on the plate 51. In the form shown in Fig. 11 bifurcated levers 84 are secured to the pivots 69 of the bars which extend longitudinally along the front and back of the lower roller beneath the nip of the rollers. These bars may be operated by the operator or by the wrapping of the clothes round either roller. The levers 84 are connected together by a link 86 so as to work in unison and are connected by springs 83 to an arm 82 on the rotary disc 77 that operates the clutch and which is rotated for this purpose by an eccentric pin 78 moved by an external handle. A trip plate 88 is secured to another arm 79 on the disc and is provided at each end with a stop shoulder 89 which engages the connecting member 85 of the limbs of one of the bifurcated levers 84 when the clutch is in either forward or reverse driving position. When either pivot 69 is rotated due to the depression of one of the bars extending along the rollers the levers 84 rotate so as to free the plate 88 and the clutch is restored to neutral by one of the springs 83. The levers 84 may also be operated, to restore the clutch to neutral, by a push-button which actuates a cross-head 92 connected to the levers.