Патент USA US2412664код для вставки
mscn 17, 1946. 2,412,664 J. N. WOLFRAM ET'AL coUPLING Eon TUBES s> sheets-sheet 1 Filed May 20, 1944 ,ygäzß /6 E151. /J ' a œ .5 /41 /ll 20 Lz i, 2: J0 m m, [kxß17,1946. J. N. woLFRAívl ErAL 2,412,664 -couPLING Fon TUBES s .sheets-sheet 2 me@ nay 2o. i944 // Z 244-3 /g '20. fit1?. î... m. .- „HHH _NHL, f „` _ v_, ä L,. 0... ' ' and MIZZcrMaÃ'ä. Déc.l 17, 1946. l J. N. woLFRAM Erm. ‘ 2,412,664 . vcouPLING 'FQR TUBES Filed May 20, 1944 ' » 5 _sheets-sheet s gmc/HM Z/fram ami ~ 2,412,664 Patented Dec. A17, 1946 ' UNITED STATES PATENT OFFICE", _ _ coUPLrNG FoR'TUBEs John N. Wolfram and Walter Maky, Cleveland, Ohio, assignors to' The Parker Appliance Com pany, Cleveland, Ohio,- a corporation of Ohio Application May 20, 1944, Serial No. 536,592 1 claims. ' (01.285-123) i The invention relates to new and useful im provements in couplings for tubes and more par ticularly a coupling which is adapted to securely » hold and seal a ilareless tube. ' An object of the invention is to provide a cou pling of the -above type wherein the tubeis secured tov a body member by va threaded nut, sealed by a gasket disposed in _a'recess within ber for gripping vthe tube and collet for contract ing the clamping member; Figure 5 is a Viewv similar to Figure 4 showing the’coupling closed and the tube gripped and sealed; , y Figure 6_ is a side view of the clamping Vsleeve shown in Figures 4 and 5; Figure 7 is an end view of the clamping sleeve shown in Figure 6; the ¿body member and adjacent the inner end of 8 is a longitudinal sectional view show the tu'be and gripped by a, contractible member l0 ingFigure a slightly modified form of coupling' and the operated on by said nut and extending outwardly use of two couplings and a body member for lalong the tube from the end of the body member. connecting two ends _of tubing; I A further object of the invention is to provide Figure 9 is an end View of the coupling; acoupling of the above type wherein the grip Figure 10 is a View inside elevation showing ping member is provided with spaced projec the coupling used for> repairing a >fracture in the tions on itsinner face which ‘are embedded in ,A tube. ` the tube for gripping the same when the coupling The invention has to do with a, coupling for is closed. ' _ tubes- and more particularlyl a tube which is of A further object of the invention is to provide uniform diameter all the way to the end thereof alcoupling of the above type ywherein the grip 20 and commonly referred1 toias a ñareless tube. ping member-'is provided with longitudinal slots The coupling as shown in iFigures 1, 2 and 3 »A . extending from the outer end thereof inwardly inclusive includes a body member l, a. nut 2, a so as to facilitate the contraction of the gripping clamping sleeve ortmember 3, a collet 4 which member. . operates upon the clamping sleeve for contract-‘ A still further object of the invention is to 25 ing the same for gripping the tube which is provide a coupling of the above type wherein the indicated at T. The coupling also includes a gripping member is/contracted by a collet which gasket 5 which is disposed ina recess in the body is» forced endwlse along the gripping member by member l so as to contact with the outer wall the nut. . of the tube and the wall of the recess in the body Another object of the invention is to provide 30 member. The body member l is provided with a coupling of the above type wherein the endwise a bore i5 which is of substantially the same di movement of the collet on the gripping memlber ameter as the bore of the tube which is to be is positively limited so as to prevent undue de clamped to the body member. Said body mem formation of the tube. A . ’ as shown- in Figure 1 is counter-_bored at i _These and other objects are in part obvious 35 ber to form a seat for the end ofthe tube. This is and will in part ybe hereinafter more iully dis ' a, positioning seat which locates the tube in the closed. , ,A coupling and' centers it relative to the coupling. in the drawings The body portion is lalso provided with a thread ' , Figure 1 is a longitudinal sectional view through ' 8 adapted to be engaged by a thread s on ,the a coupling embodying the improvements with the to nut 2. The nutl is providedwith a recess in parts in initial aßembled position; which the clamping sleeve 3 is located. This is a view similar to Figure 1 but show. Figure 2 clamping sleeve 3 is formed with a solid head ing the coupling closed and the tube gripped so lll vas shown in Figure 3. Projecting outwardly as to prevent endwise movement thereof in the from this head is the clamping portion of the 45 coupling; sleeve. This clamping portion ofthe sleeve is Figure 3 is an end view of the clamping mem provided with a series of slots l I, four in number, ber for gripping the tube and showing the slotsV as shown in Figure 3. This makes the sleeve which extend inwardly from the end of the readily contractible in the region of the slots. 0n clamping member for facilitating the contrac tion of the same; - Figure 3a is a detail showing the deformation of the gasket and the intimate contact of the gasket with the parts of the coupling and the tube caused by the ñuid pressure entering the recess; ' Figure 4 is a view similar to Figure l but show ing a slightly modiñed form of clamping mem 50 the inner face of the clamping sleeve are ribs or projections I2 and i3. These ribs or projections are adapted to be embedded in the tube for a ilrm grip between the sleeve and the tu . The outer -face I4 of this clamping sleeve is tapered so that 55 it is gradually enlarged from the outer end toward the head I0. This clamping sleeve is made with ‘ < a very slight clearance so it may be readily slipped 2,412,634 _ 3. 4 onto the tube. It is noted that the tapered outer . also provided with inwardly projecting portions face Il of the sleeve is spaced a short distance from the solid head I0 and that the slots II extend all the way from the outer end of the clamping sleeve to the solid head I0. when the coupling is closed. The clamping sleeve The collet ñ is in the form of a solid sleeve, the inner face of which is tapered substantially on the same angle as the outer face of the sleeve This tapered face of the collet when the colletl or ribs I2 and I3 which are embedded in the tube 3 is formed with slots I I and the head I0, instead of being solid as shown in Figure 3, is provided with a slot 22. The' outer face of this head IU of the sleeve is tapered as indicated at 23. The inner face 24 of the collet 4 is tapered to co1' respond to the taper 23 on the head of the sleeve. is forced along the sleeve serves to contract the When the coupling is closed this tapered face 24 sleeve and cause it to grip the tube. The nut will engage the tapered face 23 on the sleeve and 2 has an inwardly extending part I5 forming a will close up the slot 22, thus causing the head shoulder I5. The opening in the outer end of the of the sleeve to make tight contact with the tube. nut is such that the sleeve 3 and the collet l5 The body member I has a recess 20 for a seal extend outwardly beyond the nut. The collet 5 ing gasket 2l. 'I'he fluid under pressure will pass into the recess 20 and bear against the gasket. has a shoulder I`I which is contacted with by the The gasket will be deformed into very firm con shoulder I6 on the nut. The solid head I0 is adapted to abut against tact with the wall of the recess 20, the outer wall the outer end I8 of the body member so that when of the tube and the inner face of the head I0 the nut is threaded onto the body member the 20 of the sleeve. Inasmuch as the sleeve is con collet will be forced along the sleeve and cause tracted at the head thereof into tight contact with the sleeve to be contracted as shown in Figure 2. the tube, there is no chance for the gasket under The inner end I9 of the collet ¿l is limited in this fluid pressure to be extruded inbetween the its movement by contacting the solid head I0 head I 0 and the tube and thus a very tight seal of the sleeve which, as noted, abuts against the 25 ing of the tube is accomplished. In Figure 8 a slightly modified form of coupling outer end of the body member I. When the nut is shown and the use of two couplings for repair is turned onto the body member and the sleeve is contracted, the projections or ribs -I2 and I3 ing a break in a tube is also illustrated. 'I'he couplings are similar in construction and also are ' will be embedded in the tube, after which further turning of the nut onto the body member will be 30 very similar to the couplings which have already limited by the collet abutting against the solid been described, and one _of these couplings will, head of the sleeve. 'This prevents undue deform therefore, be very briefly defined. The coupling includes a body member I, a nut 2, and a clamping ing of the tube. ' . ' member 3. As shown in Figure 8, this clamping As a means for sealing the connection of the member 3 is formed integral with the body mem tube to the body member, said body member is ber I. The clamping sleeve is provided with slots provided with a recess 2li which opens into the Il and _with ribs or projections I2 and I3. The bore ofthe body member. As shown in Figures 1 outer face of the clamping member 3 is tapered as and 2 this recess is formed in the inner end indicated at 25. In this form of the coupling portion of the body member. The gasket 5, nor mally circular in cross section is placed in the 40 the nut directly contacts with the portion of the sleeve that is to be contracted and the collet has recess and when the tube is inserted the gasket been omitted. The nut has an extended portion is of such dimension that it will make a tight 26 provided with a tapered inner face 27. seal with the wall of the body member and also The body member I is provided with a recess -a tight sein with the outer wan of the tube. The coupling is particularly adapted for tubes in 20 in which is located a gasket 2I. The body member I is elongated and serves as a body mem which fluid under very high pressure is con ber for both the coupling at the right and at veyed. The fluid under high pressure will pass the left in Figure 8. It is noted that these cou the seat against which the tube makes contact plings are similar in construction. The cou and will enter the recess 2t and bear against pling at the left is shown as initially applied to the gasket and force the gasket into tight seal the tube end and the coupling at the right is ing contact with the tube, the solid head Iii and shown as closed on the tube end. The coupling the body member, as shown in Figure 3a. It will _as illustrated in Figure 8 is particularly adapted be noted that the sleeve can ñt the tube with only for the repair of'v fractured tubes. In Figure l0 a slight clearance and therefore when the gasket a tube is indicated at T. The tube was ruptured is deformed by the fluid pressure thereagainst, and the coupling is'shown as being applied for the gasket will not be forced into the space repairing the tube. The ruptured portion of the between the tube and the clamping head of the tube is cut out so as to leave two spaced ends sleeve. It will also be noted that the grip of ' T1 andTß. The coupling, as a whole as illus the clamping. sleeve is- well outward -along the tube from the solid head and therefore the grip 60 trated in Figure 8, is slid onto the end 'I‘2 of the tube. The tube may be sprung laterally out of ping of the tube and deforming of the same -by alignment with the end T1 of the tube to permit the embedding of the ribs I2 and I3l into the tube the coupling to be applied. After the coupling will -not -disturb the initial shaping of the tube l in the region of the gasket and the clamping ' has been slid onto the end ‘I’2 of the tube, the head of the sleeve will retain its close position 65 ends are brought into alignment and the coupling to the tube wall. , is moved to the right until it is engaged with ~ the end '1"l of the tube. The coupling as shown In In Figures 4 to 7 the coupling is very similar Figure 8' illustrates, on an enlarged scale, the to that shown in Figures l to 3. 'I‘he coupling includes a body member I and a nut 2, a clamp connection of these two ends T1 and 'I'2 of the ing sleeve 3 and a collet 4. The nut has a thread 70 tube. After the coupling has been placed, then the coupling at one end is closed and then the ed connection with> the body member and is provided with a shoulder I6 which is adapted to coupling at the other end is closed. 'I'his makes engage a shoulder on the collet. The outer face a very tight connection between the two ends of of the sleeve is tapered to conform to the inner ' the tube and the repair is complete. tapered face of the collet 4l. The inner sleeve is 75 Insteadof utilizing the specific form of cou atrasos 5 pling shown in Figure 8, the coupling shown in Figure l or Figure 4 may beused in the same way for the joining of the ends of tubes- or endwise of the sleeve for contracting the same, the adjacent contacting faces between the sleeve and the collet being tapered, the inner face of repairing the same. said sleeve having spacedl projecting ribs adapted ` It is obvious that minor changes in the details of construction may be made without departing from the spirit of the invention as set forth in the appended claims. We claim: ‘ ' ‘ l. A coupling for tubes comprising a body member having a bore adapted to ~receive the tube anda recess opening into said bore, a nut having threaded engagement with said body mem ber, a tube clamping member projecting out wardly along the tube from said body member and having slots extending inwardly from the outer end thereof, means operated by said nut for contracting said 'slotted end of the clamping to be embedded in the tube and a gasket disposed in said recess and adapted to make sealing con tact with the body member, the sleeve head and the tube. ì ' 5. A coupling for tubes comprising va body member having a bore adapted to receivethe tube and a recess opening into said bore, a, nut having threaded engagement with said body member, a clamping sleeve having a head at the inner end thereof adapted to abut against the outer‘ end of the body member, said sleeve having a, clamping portion extending outwardly along the tube from said head with slots in said clamping portion ex tending lengthwise thereof, the recess in said body member being disposed at the end thereof and member for gripping the tube and a gasket com pletely housed within said recess and adapted to 20 closed by the head of said sleeve, a collet sur make initial sealing contact with said body mem rounding said clamping portion of thesleeve and ber and said tube, said recess and bore being di mensioned so that iluid pressure on the tube will deform the gasket into tighter sealing contact with the tube and the body member. 2. A coupling for tubes comprising a body member having a bore adapted to receive the tube and a recess opening into said bore, a nut having threaded engagement with said body member, having a shoulder engaged by said nut whereby said collet is moved endwise of the sleeve for con .tracting the same, the adjacent contacting faces between the sleeve and the collet being tapered, said collet being dimensioned so as .to engage 'the Ahead of the sleeve for -limiting‘the contraction of the sleeve and a gasket disposed in said recess and adapted to make sealing contact Withthe body ' a clamping sleeve disposed within said nut and 30 member, the sleeve head and -the tube. projecting outwardly from the body member, said sleeve having slots formed therein, a collet surrounding said sleeve and having a shoulder engaged by the nut for moving said collet end 6. A coupling for tubes comprisingla body mem-, ber having a bore adapted to receive the tube and a recess opening into said bore, a nut having threaded engagement with said body member,. a wise of the sleeve'the adjacent contacting'faces 35 clamping sleeve having a head at the inner` end of the sleeve and collet being tapered whereby thereof adapted to abut against Ithe outer end the movement of the collet onto the sleeve will of the body member, said sleeve having a clamp-v contract the sleeve into gripping engagement ing portion extending outwardly along the tube » with the tube and a gasket in said recess and ~ from said head with slots in saidV clamping por adapted to make sealing contact with the body 40 tion extending lengthwise thereof, the recess in member and said tube. said body member being disposed at the end there 3. A coupling for tubes comprising a body mem of and closed by the head of said sleeve, a collet ber having a bore adapted to receive the tube surrounding said clamping portion of the sleeve and a recess opening into said bore, a nut having and having a shoulder engaged by said nut where threaded engagement with said body member, a by said collet is moved endwise of the sleeve for clamping sleeve having a head adapted to abut contracting the same, the adjacent contacting against the outer end of the body member, said faces between the sleeve and the collet being sleeve having a clamping portion extending out tapered, said sleeve head 'having a slot there wardly along the tube from said head with slots through whereby it may be contracted, the outer~ in said clamping portion extending lengthwise 50 face of said sleeve head being tapered and the thereof, the recess in said body member being dis inner face of said collet being tapered and adapt posed at the end thereof and closed by the head ed to engage the tapered face of the sleeve head of said sleeve, a collet surrounding said clamping for contracting said sleeve head into engage portion of the sleeve and having a shoulder en- \ ment with the tube and a gasket disposed in said gaged by said nut whereby said collet is moved 55 recess and adapted to make sealing contact with endwise of the sleeve for contracting the same, the body member, the sleeve head and the tube. the adjacent contacting faces between the sleeve 7. A coupling for tubes comprising a body mem and the collet being tapered, a gasket disposed in ber having 'a bore adapted to receive the tube and said recess and adapted to make sealing contact ' a recess opening into said bore, a nut having with the body member, the sleeve head and .the 60 threaded engagement with said body member, a tube. - 4. A coupling for tubes comprising »a body mem~ . clamping sleeve formed integral with the body member and extending outwardly along said tube, ber having a bore adapted to receive the tube and a recess opening into said bore, a nut having said clamping member having longitudinal slotsl formed therein and inwardly projecting spaced threaded engagement' with said body member, a> 65 ribs for engagement with the tube, the outer face clamping sleeve having a head adapted to abut - of said clamping member `being tapered and adapted to be engaged by the tapered inner face against the outer end of the body member, said sleeve having a clamping portion extending out of the nut whereby the threading of the nut onto wardly along the tube from said head with slots _ the body member will contract said clamping in said clamping portion extending iengthwise 70 sleeve into engagement with the tube and cause thereof, the recess in said body member being dis the ribs to be embedded in said tube, a gasket di.; posed at the end thereof and closed by the head ` posed in said recess and adapted. to make'seaiing of said sleeve, a collet surroundingsaid clamp contact with the body member and said tube. ing portionK of the sleeve and having a shoulder ' JOHN N. WOLFRAM. engaged by said nut whereby said collet0 ic moved WALTER MAKY.