Process for fabricating screens |
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| 申请号 | US843160 | 申请日 | 1960-02-12 | 公开(公告)号 | US3101526A | 公开(公告)日 | 1963-08-27 |
| 申请人 | EDWARD E JOHNSON INC; | 发明人 | PAULLUS CLARENCE L; BOLLENBACH WILLARD M; | ||||
| 摘要 | 930,554. Metallic fabrics. EDWARD E. JOHNSON Inc. Aug. 31, 1960 [Feb. 12, 1960], No. 30040/60. Class 74 (2). [Also in Group XXII] In making a screen a substantially cylindrical inner unit is rotated about its axis and advanced longitudinally, a thin continuous strip is fed and longitudinally extending portions thereof are bent to form a wire and the wire is secured to the exterior of the inner unit by continuously electric welding without interrupting the feeding and forming of the wire. In making a well screen a strip 8 fed from a coil 9 is formed by rolls 11, 12, to channel sections 14, 15, Fig. 2, and finally by rolls 13 to triangular section wire 16 and the wire is then fed on to a rotating cylinder formed by rods 5, the wire being welded to the rods by an electrode roller 7. The limbs of the section may be spaced apart or the strip may be shaped to pointed U-section, the base of which is welded to the inner cylinder. The strip may be of stainless steel, bronze or brass and the tubular wire may have a core of polyester resin, asbestos or jute. The inner cylinder may be a foraminous tube. The wire section may be such as to provide a slot of U-section widening outwardly. | ||||||
| 权利要求 | 1. A CONTINUOUS PROCESS FOR MAKING A TUBULAR UNIT OF THE CLASS DESCRIBED WHICH COMPRISES, ROTATING A SUBSTANTIALLY CYLINDRICAL GROUP OF LONGITUDINALLY EXTENDING RODS ABOUT ITS AXIS; SIMULTANEOUSLY FEEDING A THIN CONTINUOUS STRIP OF MATERIAL ADAPTED TO BE JOINED BY HEAT FUSION TO SAID RODS; SIMULTANEOUSLY BENDING LONGITUDINALLY EXTENDING SIDE PORTIONS OF SAID STRIP BY A CONTINUOUS OPERATION TO FORM AN OPEN-SIDED CHANNEL HAVING CONTINUOUS, SPACED LONGITUDINALLY EXTENDING SIDE PORTIONS; CONTINUOUSLY FEEDING SAID CHANNEL SUBSTANTIALLY TANGENTIALLY TO SAID GROUP OF RODS WITH BOTH OF THE OPEN SIDE EDGES OF SAID SIDE PORTIONS IN CONTACT WITH THE RODS; AND CONTINUOUSLY, WITHOUT INTERRUPTING THE FEEDING AND BENDING OF SAID STRIP, SECURING SAID SIDE PORTIONS OF SAID CHANNEL SHAPED STRIP AT THE OPEN SIDE THEREOF TO THE EXTERIOR SURFACE OF SAID |
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