Patent GB-355498-A (GB)
Title: Pipe wrapping machines
IPC: B65B11/04
Filed: 1930-08-13
Abstract: 355,498. Pipewrapping machines. DEHN, F. B., 103, Kingsway, London.- (Paraffine Companies, Inc.; 475, Brannan Street, San Francisco, U.S.A.) Aug. 13, 1930, No. 24296. [Class 94 (i).] A pipe-wrapping machine moves a plurality of pipes in a closed path, wraps them successively at a predetermined position in that path while simultaneously allowing a wrapped pipe to be discharged from and an unwrapped pipe introduced into the mac h i n e. The machine indicated is one for wrapping three pipes 31 in succession and is provided with a fixed headstock 4 and a movable tailstock 6, the constructions of which are essentially similar. The headstock 4, Fig. 11, comprises a rotor 14 resting on and retained bv a series of rollers 16, 18, the rotor being driven by gearing 21, 22 through the worm wheel 19. Each pipe support 67, 32 is positively driven from a shaft 44 and gearing 47 through gears 43, 34 the latter being loose but engageable at will by a clutch device 37, 41, 42. Alternatively to the coned support 67 a face plate 69 may be used with adjustable studs 72. The tailstock rotor is driven in similar manner, each of the support members for the other end of the pipe being rotatable about its axis and adjustable longitudinally by a hand-wheel and screw means. The tailstock is adjustable along the frame of the machine by a hand-wheel, worm and spur gear the latter engaging with a rack on the frame. The headstock and tailstock rotors are driven by a shaft 23 through gear boxes 101, 103 the rotation of the shaft being governed by a magnetic clutch 29. The driving system for the pipe supports at the headstock end of the machine is shown in Fig. 1 and consists of a magnetic clutch 64 driving gears 63, 62, 58, 56 and the complementary system 51, 49, governed by levers 53, 61, giving six speed changes. A carriage 108, which is moved along rails 107 by a chain 112, carries spools of wrapping material 146, 148 the material being led in strip form 149 through a bath 136 containing a waterproofing adhesive fluid. Alternatively the strip may be led over a pulley without travelling through the bath. The strip of material is started on to the pipe to be wrapped at the headstock end and by the rotation of the pipe and the travel of the carriage the wrapping assumes a spiral form. The tank is pivoted at its centre 137 and may be rotated thereabout by a hand-wheel and gearing 138, 142, 143 to alter the pitch of the spiral wrapping. Spraying means may also be used to spray the pipes before the wrapping is coiled on. This consists of adjustable chambers 174, 190,provided with outlet slits adjacent the pipe and supplied with waterproof adhesive fluid from the bath 136 by a pump 181 through flexible conduits 178 ; an overflow pipe 186 being provided. Means are also provided for applying a final wrapping of kraft paper &c. A roll of this material 195 being pivotally mounted from which a strip 194 may be applied to the wrapped pipe. The speed of transit of the carriage 108 may be varied by the system shown in Fig. 1 which consist of motor-driven separable coned pulleys 127 with a V-shaped belt 128. This element drives shaft 122, carrying two magnetic clutches 126, through a reverse motion train. The four clutches 29, 64, 126, 126 are controlled electrically, limit switches being provided to automatically stop the motion of the carriage when it has reached predetermined points in its path,