Патент USA US2412941код для вставки
Dec. 24, 1946. G. H. B‘ANNERMAN ETAL 2,412,941 METHOD OF APPLYING A FITTING TO A ROPE OriginaLFiled Nov. 17, 1937 2 Sheets-Sheet l Jaw/£5. M‘ (ween/v and ?LE/v H. Roar. Dec. 24, 1946. G. H. BANNERMAN ETAL‘ 7 2,412,941 METHOD OF APPLYING A FITTING TO A ROPE Original Filed Nov. 17, 193'? 2 Sheets-Sheet 2 _ _ _ _ I ‘ I ' _ _‘ bweizz'oxss ?oeaoxv // 54/V/VEEM4/V, J4ME5 M. CUEE?/V and 645v H Teal/r. ‘ Patented 95'!- 24, 1946 _ * 2,412,941 umrso STATES, PATENT ' v OFFICE 2,412,941 METHOD OF APPLYING FITTINGS T0 ROPES Gordon H. Bannerman, Worcester, Mass, and James M. Curran andGlen H. Trout, Omaha, Nebr., assignors to The American Steel and Wire Company 01' New Jersey, a corporation 02 New Jersey Continuation of application Serial No. 175,165. November 17, 1937. This application June 5, 1940, Serial No. 339,026 1 Claim. 3 This invention relates to a method of apply- \ ing rope ?ttings and is particularly concerned with the application of a ?tting to a wire rope in such a manner that the ?tting is positively ?xed (Cl. 213-4148) 2 tendency respecting the latter even when the rope’s diameter is reduced by its operating ten sion. The rope I is placed under tension at least against movement longitudinally of the rope equaling and preferably exceeding 30% oi’ its ulti» when the latter is subjected to its normal oper mate strength, the normal operating tension for ating tension. . which it is designed. The liners l0 are, of course, By way of a speci?c example, the accompany positioned within the ‘lug and should be made ing drawings illustrate the application of a ?tting from a material that is slightly plastic under in such a manner as to anchor the swinging car 10 pressure yet which has the ability to withstand rier arm of a wire rope tramway or conveyer repeated impact stresses resulting when the lugs against movement longitudinally of the conveyer rope, the various ?gures being as follows: Figure 1 is a transverse view of the conveyer rope and one of the arms; Figure 2 is a side view of Figure 1; Figure 3 is a transverse section of the ?tting; Figure 4 is a longitudinal section of the same; and slightly out of registration at this time,'regis~ tratlon being effected by placingthe lugs between ‘ Figures 5 and 6 are elevations taken in di?’er ent directions of part of the equipment used in the application or" the ?tting. pass over the rollers of the tramway system of which the rope is a part. Assuming the lug to be made of steel, copper is a good example of a desirable liner material. Piano hinge elements 7 of the two parts of the lug 6 are so constructed that the holes in the respective elements are . the jaws l2 of a suitable hydraulic jack I 3, these laws embracing the parts of the lug 6 to bring the holes of its piano hinge elements to registra In these drawings, the tramway or-conveyer tion, this constricting the rope. i to a diameter less than that to which it is reduced by the applied tension and permitting insertion of the pins 8, the ends of which are then ‘upset, to re rope by way of spaced heads 3 through o?sets i, tain them in position. Pressure exerted by the each head consisting, of two semi-cylindrical jaws I2 is sufficient to cause the copper liners to halves interfastened by rivets 5 so as to relatively flow slightly and creep between the individual loosely embrace the rope 8, whereby the hanger 30 wires of the strands of the rope I. arm 2 may swing relative the latter. The advantage of the resulting installation re The present invention is exempli?ed by a lug specting the ability of the lug 6 to remain ?xed 8 which is ?xed to the rope l between the heads in position even when the rope I is tensioned 3 so as to anchor the latter against movement so that its diameter slightly reduces has already longitudinally of this rope. This lug is in the been mentioned. A further advantage is that a rope I is made of wire, and supports a series of depending arms of which only one, numbered 2, is illustrated. This arm connects with the form of inter?tting semi-cylindrical parts hav ing cooperative piano hinge elements 7 on their respective abutting edges through which pins 8 may be driven to effect interiastenlng. The two semi-cylindrical parts of the lug do not directly wire rope even when it has a wire center or core is. subject to some internal wear whereby its di ameter is continuously reduced during service. Due to the fact that the lug 6 is constricting the rope to a diameter considerably smaller than engage the rope i but are internally recessed, as its normal diameter, the lug does not loosen even at 9, so as to retain liners it in such a fashion when such internal wear reduces the rope’s diam that‘ the latter ..:e interposed between the parts eter. Due to the fact that external wear is oc~ and the rope l. These liners illhave their inside curring on the portions of the rope not protected surl’aces helically grooved, as at it, in such a 45 by the lug 6, the service life of the rope reaches fashion that these grooves ?t the individual its end prior to the time the internal wear of strands of the wire rope. the rope within the lug 8 causes loosening of the A particularly characterizing feature of the latter. ' above ?tting or lug 6 is that it constricts the rope It is to be understood that the external wear to a‘ diameter substantially less than that diam 50 mentioned is caused by the rope irictionally eter to which the rope is reduced by the operat working against various surfaces, such as that ing tension which it is designed to normally ac of the sheave l4 illustrated in the drawings. commodate. It has been found that by so ap This application is a continuation 01' our co plying the ?tting it remains absolutely ?xed rela pending application of the same title, bearing tive the rope because it exerts its constricting Serial No. 175,165 and ?led November 17, 1937. . e,412,941 ' 3 We claim: A method of applying a, ?tting to a rope, said ?tting being adapted to encircle and constrict . . a3 . ing tension for which the same is designed, and said method being further characterized in that said rope so as to be Positioned against move the latter is applied to said rope while the same is so tensioned so as to constrict said rope with a. ment longitudinally of the same, said method being characterized in that said rope is tensioned sumciently to reduce its normal diameter during diameter. the application of said ?tting, the force used to so tension said rope exceeding the normal'work force su?lcient tostill further reduce its normal aoRno‘N H. BANNERMAN. J M. CURRAN.