Patent GB-674136-A (GB)
Title: Improvements in or relating to domestic laundering apparatus
IPC: D06F45/00
Filed: 1949-09-10
Abstract: 674,136. Wringing-machines. KAY, M., and KAY, J. A. Aug. 24, 1950 [Sept. 10, 1949], No. 23460/49. Class 138 (ii). A domestic wringing machine of the kind intended to be secured to or form part of a domestic washing machine or a supporting table or frame, comprises a cylinder, an endless band, a portion of which is arranged to engage the cylinder to form an arc of contact therewith, a pair of guide rollers each arranged in a loop of the band, one of the guide rollers being yieldably urged towards the corresponding loop so as to press the band into engagement with the cylinder, and an auxiliary nip roller mounted for movement towards and away from the said portion of the band and adapted to be urged towards that portion by an opposing portion of the band. In the arrangement shown, an endless band 18 of rubber-impregnated canvas is supported on rollers 19, 20 and 21 mounted between side walls 13 of a main frame and engages a cylinder 11 also mounted between the side walls 13. The upper roller 19 is supported by bearing members 23 in slots 24 in the walls 13 against a pair of compression springs 26 having slidable abutments in slots 29 in the side walls 13. The springs are adjustable, to vary the pressure between the band 18 and cylinder 11, by a .pair of cam members 32 on a shaft 33 which are rotatable by means of hand levers 37 and on which cam grooves 34 engage noses 36 on the abutments 28. The roller 20 is slidably mounted in bearing slots 46 and is formed at its ends with flanges 47 which embrace the band 18 and which rest on the cylinder 11 when the machine is not in use, the flanges being greater in depth than the thickness of the band 18 whereby to prevent contact thereof with the roller 20. A hand crank 41 is secured to a shaft 38 of roller 21 and is adapted to be turned inwards when not in use. A feed-table 48 is pivotally mounted about the axis of roller 21 and is adapted to be locked in an inoperative position as shown in full lines in the drawing. A hinged cover 52, supported by slotted stays 54 and thumb-screws 56 serves as a tray for finished articles. A stop member 57 on the shaft 33 prevents closure of the cover 52 until the levers 37 are in the " off " position and allows the levers 37 to act as handles for moving the machine. In a modification, Fig. 3 (not shown), the band 18 may be positively driven by means of sprockets on a roller which engage chains which are secured at intervals to the band. The cylinder 11 may also be provided with sprockets. In another arrangement, Fig. 4 (not shown), the band is grooved to engage teeth formed on the rollers. Alternatively, Fig. 5 (not shown), perforations along each edge of the band engage pins protruding from the rollers. For mangling and like operations the cylinder is preferably rubber covered. The cylinder may be separately driven. For calendering and smoothing, the cylinder is preferably of polished metal and may be non-rotatable and may also be heated, for example by electricity. According to the Provisional Specification a guard is preferably provided for the portion of the cylinder approaching the nip between the cylinder and band. The lower roller may be driven from the motor of a washing machine.