Oct. 29, 1946. ‘u D_ w_ T_ EVANS 2,410,023 APPARATUS FOR DIPPING TUBES, BARS, AND THE LIKE Filed Aug. 16, 1943 2 Sheets-Sheet 1 .2). W. TlTI/‘QJILS 5 29, I946. D.‘W. T. EVANS 2,410,023 APPARATUS FOR DIPPING TUBES, BARS, AND THE LIKE ' ‘ Filed Aug. 16, 1943 2 Sheets-Sheet 2 I I I I I I . I ‘hi I I I .I Patented Oct 29, 1946 2.4101123 * UNITED STATES PATENT OFFICE APPARATUS FOR DIPPING TUBES, BARS, AND THE LIKE David William Thomas Evans, Sutton Coldfield, England, assignor to T. I. (Group Services) Limited, Birmingham, England Application August 16, 1943, Serial No. 498,831 In Great Britain September 1, 1942 2 Claims. (Cl. 51—163) 2 This invention has for its object to provide improved apparatus for use in pickling, washing is attached to the arm I) or c remote from the or analogous dipping operations on tubes, bars carrier in forms a bi'ght or loop on which the shaft. and the like, the apparatus being of the type in tubes n can be placed. Lowering and raising of the tubes 12 into and out of the bath beneath the bight is effected by rotation of the shaft or shafts 7'. During such movements the tubes n move relatively to each other with a rolling or tumbling" action which ensures exposure of the whole of the surfaces of the tubes to the bath liquid. which a number of articles to be treated are car ried on the bight of a chain or chains or other ?exible member or members (herein termed a ?exible carrier) adapted to lower and raise the articles into and out of a bath or other receptacle with a relative rolling or tumbling action. In the accompanying sheets of explanatory When a shaft :i is provided on the outer end of each of the two arms 22, c of the framework, the tumbling motion can be imparted to the tubes 11 while immersed independently of a raising or drawings Figures 1 and 2 are respectively an end elevaw tion and a side elevation of an apparatus con structed in accordance with the invention for use in the pickling and washing of metal tubes. In carrying the invention into effect as shown, I employ a framework a consisting essentially of two main frame-like arms I), 0 adapted to form an L-shaped structure. This framework it is provided with trunnions d at the junction of its arms b, c, that is to say, at the angle of the L, and is pivotally supported on a horizontal axis by ?xed bearings as e which accommodate the trunnions. The bearings e are located be tween a pair of baths 7‘ arranged parallel with each other, the one bath containing pickling solution and the other Water. The framework a is adapted to be swung about its pivot axis through 90", so that when in one extreme position one of its arms 2), 0 lies horizontally over one of The intermediate portion of the ?exible 15 lowering motion by rotating both shafts simul taneously, raising or lowering of the tubes n being effected by rotation of one or both of the shafts. Actuation of the shaft or one of the shafts :i is ef fected by an electric motor 0 or other convenient 20 source of power through a reduction gear p which in the example shown is connected to the shaft by chain-and-sprocket mechanism. This mecha nism comprises a chain q connecting a sprocket 1' driven by the gear p to a second sprocket s, and 25 another chain t connecting a third sprocket u to a fourth sprocket v on the shaft 7', the second and third sprockets being formed integrally with each other or secured together in coaxial rela tionship, and being freely mounted on one of 30 the trunnions d. The other trunnion d may be the baths f, the other arm being upright, and when in the other extreme position the previ ously upright arm lies horizontally over the other bath, and the previously horizontal arm is up right. In the drawings the framework it is shown used for supporting like parts of a similar mech anism adapted to actuate the other shaft 7' when two such shafts are employed, so that the two shafts are independently operable. Alternatively any other convenient mechanism or mechanisms may be used for actuating the shaft or shafts 7'. in one of its extreme positions with the arm b In carrying out a pickling operation, the frame upright and the arm 0 horizontal, the arm I) work a is swung about its pivot axis so that one being also shown in broken lines in Figure l in of its arms b, c occupies its horizontal position the horizontal position it assumes when the 40 over the bath 7‘ containing the pickling solution. framework is moved to its other extreme position. The tubes 11 are now loaded on to the bight of Movement of the framework (1 from either of the flexible carrier m, and by rotation of the its extreme positions to the other is effected by shaft 1' (or one or both of them when two are means of a worm wheel segment 47 secured to employed) the tubes are lowered into the bath one or each of the trunnions d, the segment being 45 beneath. After the pickling operation the flex engaged by a worm h which is driven by an elec tric motor 2‘ or other convenient source of power. At the outer end of one or each of the arms 12, c is mounted a longitudinal shaft :i-having secured on it a drum or drums k to which is at- ' tached the adjacent end of a ?exible carrier m for the tubes as n to be treated, the carrier being formed by a chain or chains or other ?exible member or members. When only one shaft 1' is employed the remote end of the ?exible carrier m 55 ible carrier m is moved in the reverse direction for raising the tubes 11. out of the pickling bath to the original upper position. The framework a is now swung through 90° so as to bring the other of the arms b, 0 over the bath 1‘ containing water. In this movement the tubes n move lat erally from the position over the pickling bath to a position over the water bath. The tubes are now lowered into the water. After washing the tubes are again raised, and by continued 2,410,023 3 action of the shaft 1‘ which actuates the ?exible carrier m, the latter is caused to assume the po sition shown in chain-dotted lines in Figure 1, so that the tubes roll off the carrier on to a deck or other support (not shown) arranged at one side of the water bath 1‘. Alternatively the tubes may be removed by a crane. Subsequently the framework a is swung back into its initial po sition over the pickling bath in readiness for the next operation. Whilst for most purposes the arms b, c of the framework a are most conveniently situated at 90° to each other, the invention is not restricted to this detail, as the angle between the arms, and also the angle through which the framework is rotatable may be varied to suit different re quirements. Also instead of actuating the frame work a electrically it may be actuated by any convenient hydraulic, pneumatic or mechanical means, By this invention I am able in a very con venient manner to facilitate and expedite the handling of tubes, rods or the like in pickling and washing operations. The invention may also be used in other industrial operations, such as galvanising in which it is required to lower and raise the articles into and out of a bath or other receptacle. 4 Having thus described my invention what I claim as new and desire to secure by Letters Patent is: 1. Apparatus of the type speci?ed for dipping tubes, bars or like articles, and having in com bination a ?exible carrier for the articles to be treated, a framework on which the carrier is mounted to provide an Open bight for accom modating the articles to be treated, movable means through which at least one end of the carrier is supported on the framework and by which the said end can be moved relatively to the other end of the carrier for varying the depth of the bight to elevate or lower the articles, and means whereby the framework is pivotally sup ported so that it can be swung into different positions for transporting the articles from one position to another. 2. Apparatus as claimed in claim 1 in which the framework comprises two main arms ar ranged at an angle to each other, and is pivoted at the junction of the arms on a horizontal axis, the open bight of the ?exible carrier being situated between the outer ends of the said arms. DAVID WILLIAM THOMAS EVANS.