Patent GB-404654-A (GB)
Title: Improvements in and connected with apparatus for pickling or swilling sheet metal
IPC: B65G49/04
Filed: 1932-07-15
Abstract: 404,654. Pickling and cleaning metals. TAYLOR, A. W., (Representative of TAYLOR, F. J.), Oakwood, Briton Ferry, Glamorgan. July 15, 1932, No. 20085. [Class 82 (ii).] Coiled sheet metal strip is supported on a carrier which co-operates with a bath containing pickling, neutralizing, or swilling liquid or with means in the bath so that on raising or lowering the carrier in the bath the coil is axially deformed. The carrier may be jigged up and down in the bath to produce rapid deformations of the coil. The carrier may comprise three spaced arms b, Figs. 1 and 3, radiating from a centre b<1> and supported by rods c, the arms sloping upwards from the centre so that the coil is axially deformed when placed thereon. A disc d having spaced blades e with sloping upper edges is placed on the bottom of the bath so that the blades, which do not meet at the centre, are disposed in the segmental spaces between the arms b. On lowering the carrier the coil is removed from the carrier and supported on the blades e, being axially deformed to the shape of an inverted cone. In the form shown in Fig. 4 the carrier comprises a ring with downwardly sloping spaced arms b and the co-operating device in the bath comprises spaced arms g sloping upwardly and meeting at the top. In another form the upper edges of the blades e may be horizontal. Alternatively the carrier may have upwardly sloping arms co-operating with flat or downwardly sloping blades mounted on the bottom of the bath, or the arms of the carrier may be flat so that the coil is not axially deformed until the carrier is lowered and cooperates with downwardly or upwardly sloping blades mounted in the bath. In the form shown in Fig. 9 the arms b of the carrier are pivoted to a central member b<3> and normally slope downward so that on lowering the carrier the engagement of the ends of the arms b with the bottom of the bath causes the arms to pivot into the horizontal position, with consequent axial deformation of the coil. In Fig. 10 the carrier comprises a ring f with arms b pivoted thereto, the carrier being suspended by rods c pivotally connected to the arms b. A stop member j on each arm b limits the upward rotation of the arms. On lowering the carrier into the bath the ring f comes into contact with and rests upon a ring or stop members m and the arms b swing from the upwardly inclined to the downwardly inclined position. Fig. 12 shows a carrier suspended from a trolley n which moves along a continuous track o<1> part of which o can be raised or lowered by a ram s, beam t, and connecting rod u. Three baths are mounted below the part o of the track. The trolley is moved along the track o<1> until it engages an arm p suspended from a bar q which can be reciprocated by a ram r. On reciprocation of the bar q a detent p<1> pushes the trolley on to the track o to a position above the first bath. The track o is then lowered so that the carrier enters the bath and is then giving a jigging motion during which time the bar q returns to its initial position. The track o is then raised and the trolley rises between the prongs of a guide fork v depending from the bar q. The subsequent movement of the bar q moves the carrier to a position above the second bath and brings a fresh carrier into position above the first bath. After treatment in each of the three baths a single prong v<2> pushes the carrier off the part o of the track on to the fixed path o<1>. Two carriers may be suspended from a single trolley in which case two co-operating members suitably spaced are provided in each bath.