Патент USA US2412394код для вставки
Dec. 10, 1946. 2,412,394 D. L. GILES ' PIPE COUPLING Filed Nov. 12, 1943 [7 20 22 24 . 27 23 m ,4 / ‘ 53"; 14 ‘ ‘ INVENTOR. D/LYs L. GILES I 2” W% A Trcw/v: Y 2,412,394 Patented Dec. 10, 1946 UNITED STATES PATENT OFFICE 2,412,394 PIPE COUPLING v Dilys L. Giles, Burbank, Calif. Application November 12, 1943, Serial No. 510,051 1 Claim. (Cl. 285—97.5) 1 This invention relates to a‘ swivel pipe ?tting and has for its principal object the provision of a simple economical and highly e?icient swivel pipe ?tting which can be quickly and easily applied to the pipe without the use of unions; which will allow free rotative movement of the pipe without leakage; and in which there will not be mechani ‘ 2 placed upon the gaskets to crush or deform the latter since all stresses are absorbed by the ?anges I2. The‘ nipples are free to rotate with their ?anges l2 sliding in the groove 20 of the collar and with the gaskets l4 sliding on the tube I3. The outer surface of the latter may be ground on a centerless grinder to accurate dimension so that a perfect seal is obtained at any point cal damage or crushing of the sealing gaskets. thereon. Any wear will occur between the gaskets Other objects and advantages reside in the detail construction of the invention, which is de 10 and the tube. The elements can be economically replaced. signed for simplicity, economy, and e?iciency. " In Fig. 4, an alternate form of the invention is illustrated employing exactly the same prin lowing description. ciple. In this form, the same nipples Ill are used In the drawing: Fig. 1 is a side elevation illustrating a straight 15 with their gaskets M slipped over the extremities of a curved tube 2!. The tube 2| may be curved form of the improved ?tting; to any desired angle. As illustrated it is formed Fig. 2 is a longitudinal section thereof, taken as a 90° elbow. A curved housing 22, formed in on the line 2—-2, Fig. 1; ' ' two halves, is clamped about the curved tube 2! Fig. 3 is a cross section therethrough, taken on 20 by means of clamp bolts 25 passing through suit the line 3-3, Fig. 1; and able bolt holes 23. The bolt holes 23 are formed Fig. 4 is a longitudinal section'through the in- . These will become more apparent from the fol in bolt ?anges 24, projecting from the opposite sides of each half of the housing 22. The oper The improved ?tting consists of two similar ation and advantages of this form are exactly terminal nipples, which may be provided at their outer extremities with either male or female 25 the same as the previously described form. It also comprises only three different simple parts threads on ?anges on blank ends for welding with the nipples It being interchangeablevwith (male threads have been illustrated). The inner the previous form. extremities of each nipple is enlarged to form a While a speci?c form of the improvement has bell-like socket ll terminating in a peripheral 30 been illustrated herein, it is desired to be under ?ange l2. stood that the same may be varied, within the The two niples are sealed to each other by scope of the appended claim, without departing means of an inner tube l3, having the same in from the spirit of the invention. ternal diameter as the nipples. The extremities Having thus described the invention, what is of the tube I3 extend into the belled extremities ll of the nipples. The nipples are sealed to the 35 claimed and desired secured ‘by Letters Patent 1s: ,, tube l3 by means of suitable resilient, annular A ?tting for connecting the extremities of sealing gaskets l4 which are carried in internal two lengths of pipe so as to allow relative rota ring grooves in the sockets l I, and which are com tion of said lengths and to prevent relative an pressed between the grooves and the tube snugly engaging the outer surfaces of the latter. The 40 gular or axial movement thereof comprising: two similar nipples; a threaded outer extremity on two nipples are maintained in proper spaced rela each nipple; a similar enlarged cylindrical socket tion on the extremities of the tube l3 by means vention arranged as an elbow ?tting. on the inner extremity of each nipple; a periph of a split collar 15 formed in two similar half sections. Each section is provided with bolt ’ eral ?ange surrounding the open extremity of ?anges l6 containing suitable bolt openings l‘! 45 each socket; a cylindrical inner tube terminat ing in each socket and connecting the two; an an for the reception of clamp bolts l8. The collar H3 is enlarged at its extremities as shown at l9,‘ and these enlarged extremities contain an in ternal groove 28 for the reception of the ?anges l2. ' nular sealing gasket surrounding each extremity of said tube, said gaskets being mounted in grooves in said sockets; a split collar surrounding 50 the inner tube intermediate said sockets and The simplicity of the improved coupling can be readily seen. It consists of only three differ ent parts, since the two nipples I0 and the two halves of the collar l5 are duplicates. It is not necessary that the connection between the collar 65 and the nipples be ?uid tight since the ?uid is stopped off by the gaskets I4. No strains are, maintaining the latter separated; enlarged ex tremities on said collar provided with internal grooves in which said ?anges are rotatably mounted; and means for securing the two halves of the split collar together. . DILYS L. GILES.