Патент USA US2008650код для вставки
July 16, 1935. A. J. WEATHERHEAD, JR 2,008,650 HOSE~ COUPLING Original Filed Feb. l2, 1931 // à 2 Sheets-Sheet 1 .% July 16, 1935. 2,008,650 A. J. WEATHERHEZAD, JR HOSE COUPLING Original Filed Feb. 12, 1931 2 Sheets-Sheet 2 l grt/[email protected] ALBERT-7T WEATHER/[email protected] IK 2,008,050 Patented July 16, 1935r UNITED STATES PATENT' OFFICE 2,008,650 _HosE vcomunic. Albert J. Weatherhead, Jr., Cleveland, Ohio, as signor to The Weatherhead` Company, Cleve land, Ohio, a corporation of Ohio Application February 12, 1931, Serial No. 515,258 Renewed April 9, 1934 8 Claims. (Cl. 285-84) This invention relates to couplings and more be effective as a seal against leakage but will, vspecifically to a novel structure for effecting a 'in addition, have sufficient strength to withstand secure joint between a flexible hose and with tensional or torsional stress. Another object of this invention is to provide means such as the cylinder of a hydraulic brake 5 or a fitting interposed between such means and a union for joining a flexible tube to the cylinder of a hydraulic brake or a fittingV wherein rotting the hose coupling. out or deterioration of the hose or tube resulting It is very desirable to provide a fluid line as sembly which will successfully withstand any from leakage of liquid into the body or walls of ‘ possibility of leakage of the force transmitting such hose, will be completely eliminated. Another object of this invention lies in the 10 10 fluid, which might render the brakes inoperative that are dependent upon such force for actua provision ofla coupling which can be either con tion, and thus endanger the lives of persons re nected `directly to the cylinder of a hydraulic lying thereon. Leakage is more often apt tov oc brake or to an adaptor or other fitting interposed between said cylinder or a fitting and the hose. cur at the coupling joints. A further object of this invention is directed This invention contemplates the provision of a novel form of coupling that is adapted to be to the provision of an integral means for encom included in the hydraulic braking system of passing the inner and outer walls of the hose or automotive vehicles. It is adapted to form a leakproof seal with the end of the hose as well 20 as a secure and non-leaking joint with a brake cylinder or fitting to which it may be attached. In its preferred form, the coupling consists of a sleeve adapted to encompass the end of a flexible hose, and a thimble insertable into such sleeve -25 to cover and protect the end of the hose. The external sleeve is compressed at a point inter mediate its length to 4securely grip the hose to prevent the withdrawal thereof. In addition, the coupling is provided with a threaded stem adapt 30 ed to be screwed ‘directly into the brake cylinder or into a fitting. Two joints are offered to accom modate various types of fittings. In some in tubing as well as the cut end thereof to thereby exclude the brake operating fluid from the walls or the body of the hose. Still another object of this invention is to pro vide a coupling for a ñexible tube or hose that will be effective to securely grip the hose to pre vent the withdrawal thereof from such coupling in addition to providing a leakproof connection 25 therebetween. Still another object of this invention is to pro vide a simplified and more integral fluid braking system for vehicles wherein the use of. my pre ferred form of coupling will result in the elimina 30 tion of a number of parts, such as adapters, which have heretofore been found necessary with other stances a shoulder on the body of the coupling at ' types of coupling devices. ’ Other objects and advantageous features of the base of the stem forms the sealing surface, or, 35- in other instances, a conical seat at the end of this invention will be hereinafter brought out the coupling conduit serves this purpose. How more in detail, reference being had to the accom ever, in either instance a good leakproof joint is panying drawings wherein like figures of refer ence- designate corresponding parts, and wherein; Fig. l is an elevation of my preferred form of In the braking system illustrated herewith, the 40 flexible hose part of the system lies between and coupling for one end of the hose showing the ex 40 iscoupled to the copper tube piping system car ternal appearance thereof. Fig. 2 is a vertical longitudinal section through ried on the sprung part of the vehicle at one end and to the brakes themselves or to an auxiliary a preferred form of coupling for the other end of' obtained. 0 - piping system which is mounted on an unsprung the hose and a portion of the cylinder of a hy draulic brake illustrative of the manner in which 45 45 part of the vehicle. The hose coupling at the end adjacent the sprung part ofthe vehicle is se cured to the chassis frame and in the embodiment of my invention shown herein this coupling serves the triple function of engaging the copper tube, 50 engaging the rubber hose and also engaging a part of the vehicle frame. Included among the objects of this invention is the desire to provide a union for joining a flexible fluid conducting hose or tube and a ter 55 minal of any nature whatsoever that not only will the outer sleeve of the coupling is compressibly reduced centrally to clamp the cut end of the tube. _ Fig. 3 is a vertical longitudinal section of the coupling illustrated in Fig. 2 with the various parts in position prior to the compressing of the external sleeve.> Y Fig. 4 is a. detail partly in section of a preferred form of internal sleeve member for enclosing the out end. of the tube. v 55 2 2,008,650 Fig. 5 is a detail partly in section showing a the end of the thimble, which illustrates that it modified form of internal sleeve. is of importance that a good seal be established Fig. 6 is a layout of a hydraulic brake system else fluid leakage occur.' ' ' To Join the hose to the coupling E, the sleeve I Fig. 7 is a. detail of one of the front wheel is rolled or spun inwardly at some point interme brakes of the motor vehicle illustrated in Fig. 6, diate the ends thereof, preferably at a point just showing the part that my coupling plays in con beyond the end of the skirt 6, as shown in Fig. 2, necting a flexible tube between the brake cylinder or at a point intermediate the length of the skirt oi’ a motor vehicle. and the main fluid line. Fig. 8 is a detail illustrating the use of my cou ' where the cap of Fig. 5 is employed, as shown in Fig. 9, so that as the sleeve is pressed inwardly, 10 plings between the T-connection of the lateral the skirt will also be pressed inwardly and a re fluid for the rear wheel brakes and the main fluid duction in diameter effected at the end or at a line. point in rear of the end if the thimble of Fig. 5 Fig. 9 is a section taken on the line 9-9 of is employed. ' ' Fig. 8. When this operation is completed, assuming 15 Referring now to the drawings, I have shown in that the thimble of Fig. 4 is employed, it will be Figs. l and 2 and Fig. 9 two coupling devices des found that the hose will be compressed between ignated respectively E and F. The coupling de the outer sleeve and the nipple at a poinif behind vice E constitutes the preferred form of coupling the end of the skirt. Further, the hose will be and will be dealt with first. ¿ compressed between the nipple and the end of the 20 This coupling may be machined from bar stock and includes a sleeve I, the inner walls of which define a chamber having _a bottom shaped in the form of the frustrum of a cone. The bottom of this chamber is bored to provide a fluid -passage 3 in a. threaded stem 2, the outer end of the stem being counterbored to form a flared end 4, adapt skirt. A seal Will also be effected between the sleeve I and each of the annular rings 8 formed on the exterior of the skirt. A seal will further be produced between the skirt and the coupling along the circumferential line Where the radial 25 face 9 of the thimble abuts against the bottom oi the conicalseat 5. If the cap of Fig. 5 is em ed to co-operate with a conical seat 4I formed at ployed, the zone of greatest radial reduction will the bottom of a threaded chamber 5U, Fig. 9, in a occur at a point intermediate the length of the fitting 39. 40 45 50 55 60 - sleeve. . The sleeve I is adapted to encompass and em When the sleeve I is rolled inwardly, a radial brace the cut end of a hose A and the union and inwardly directed pressure is effective to therebetween is established by reducing the diam squeeze the hose between the sleeve and the nip eter of the sleeve at some point intermediate its ple I0. The hose between this zone of pressure length, preferably by a process of spinning or roll and the radial face 9 of the thimble expands Ia ing, as described and claimed in my Patent No. dially as well as longitudinally and is compressed 2,000,680, issued May 7, 1935. Before the cut end against the radial wall of the thimble which sets oi’ the hose is inserted in the sleeve, a thimble is up a further seal between the hose and the thim inserted thereover to protect the exposed end of ble. In addition, the pressure exerted to roll the the hose from the deleterious effect of fluid seep sleeve I inwardly is also effective to force the age. The cup is also effective to produce a seal thimble forward to produce the seal hereinbe with the sleeve I further effective to prevent fluid fore mentioned between the radial wall 9 and under pressure from seeping between the walls the wall of the flared portion 5. It will be readily and entering the cut end of the hose from behind. appreciated that a seal is effected between the More particularly, the thimble comprises a tu coupling member I and thimble that will preclude bular skirt portion 6 provided with a plurality of the leakage of fluid under pressure therebetween external grooves 'l spaced by annular rings 8 that even though a considerable head is built up against are effective to produce a seal with the inner sur the radial part 9 of the thimble. face of the sleeve I in a manner to be hereinafter Referring now to Fig. 9, particularly to the cou described. 'I‘he thimble is also provided with a pling shown on the left hand side thereof, it will radial wall 9 that has an integral nipple I0 cx be noted that this coupling differs from the cou tending into and beyond the end of the skirt 6. pling E in that the thimble is dispensed with. Hence, when the thimble is placed on the cut end This coupling, designatedby F, is intended to be of the tube, the nipple 4III embraces the wall of joined to the opposite end of the hose and Where the hose passage, the sleeve 6 encompasses the this hose is employed'with a unit of a hydraulic external surface of the hose and the cut end abuts braking system, extending from the sprung part of against the radial Wall 9. the vehicle to the unsprung part, this particular A slightly modified form of sleeve is shown in coupling device is intended to be attached to a Fig. 5, wherein the skirt portion 6 is substantially bracket on the frameof the vehicle, whereas the twice the length of the skirt shown in Fig. 4, and other coupling E is intended to make a connec 30 35 40 45 50 55 60 the nipple IUa differs slightly over the nipple I0 tion with the fitting 39 hereinafter referred to. by the provision of _a plurality of annular barbs The coupling includes the sleeve I, the bottom I I adapted. to prevent the withdrawal of the cap of which is concaved as shown and is bored to after it has been placed on the cut end of the provide a conduit for the reception of a headed 65 hose. stem I9. 'I‘he head of the stem I9, indicated by Referring to Fig. 3, I have shown the hose A I8, lies at the bottom of the threaded chamber with the thimble disposed on the cut end thereof I 6 formed in the threaded stem 2. A male mem and the whole inserted in the sleeve I with the ber I5 having a flared conical end I1 is adapted radial face 9 of the thimble abutting, along its to be sleeved- on a tube M having a flared end 70 marginal edge, against the conical bottom of the adapted to be compressed against the seat I8. 70 sleeve. It will be noted at this point that a pocket The nipple I9 extends into the area defined by of considerable area is formed ahead of the radial the sleeve F and is provided with barbs 20 adapt face 9 that, when the device is operatively con ed to engage with the hose A and to prevent nected with a ñuid transmitting system, offers withdrawal thereof. The hose is secured to the 75 means for building up a considerable head against coupling member by inserting in the sleeve I with 75 2,008,050 3, the cut end of the hose pressed ñrmly against are claimed in my divisional application Serial the bottom thereof. The sleeve is then rolled at No. 26,932, filed June 17, 1935. I claim: ^ , some point intermediate its length to a reduced 1. -In a coupling for the end of a flexible rub diameter and the hose is compressed between the sleeve and the nipple. Here, the longitudinal ber hose having a fabric body portion, the com pressure set up in the hose between the zone of bination of a member comprising a tubular part radial pressure and the bottom of the chamber insertable within the bore of the hose and a Iformed by the sleeve is effective to force’the cut sleeve part encompassing the exterior of the end end of the hose firmly against the conical bottom of the hose, said tubular part being at least as long as said sleeve part, and a disc part integral 10 to establish a. tightseal therebetween. As for applying my coupling to the hydraulic ly formed with said first named parts, and means brake system of an automotive vehicle, I-have including at least a portion of the body -oi! the shown in Fig. 6, a layout of such system and have coupler bearing upon and pressing inwardly the designated the flexible tube connection to which said sleeve part of said member and gripping 15 my coupling is joined by the letters B, C and D. the hose end thereby, whereby fluid is excluded The tubes at B and C connect between the main from the end of the hose. 2. A hose coupling including a coupling head fluid line and the cylinder of the brake drum, whereas the tube D connects across the main line having a sleeve the walls of which define a cham and the lateral conduit supplying both rear wheel ber having a conical bottom, a cup adapted to lie within said sleeve, said cup having a skirt vadapted 20 20 brakes. To more clearly bring out the manner in which to encompass a hose and a radial wall against my couplings are incorporated in the fluid sys which the end of said hose abuts, said sleeve tem, I have shown an enlarged detail of one of being adapted to be compressed on said skirt to the front wheel brakes and the flexible tube B. seal said skirt against said hose and to seal said cup against the bottom of the chamber defined. 25 closing the brake cylinder 32 mounted on the by said sleeve and compress the end of said p apron 3|, Fig. 2. I preferably employ the type hose against the radial wall of said cup. 3. A hose coupling including a coupling head of coupling designated by the letter E and shown in Fig. 3, for the drum end of the tube end. As having a sleeve integral therewith, a cup insert 30 will be noted, the threaded stem 2 is screwed into able in said sleeve and adapted to encompass a 30 a threaded aperture in the radial face 33 of the hose, said cup having a skirt and an integral cylinder 32. A seal is effected between the cou radial wall, said wall having an integral nipple pling and cylinder by.placing a gasket 34 on the vlying within the hose passage and extending be yond the end of the skirt, the skirt being pro stem 2. The opposing end of the tube is connected to vided with a plurality of annular rings, said 35 the main _fluid system by means of the coupling F` sleeve being adapted’to be compressed on said shown in Fig. 9. The threaded stem 2 is inserted skirt to seal said skirt against said hose and through an aperture in an L member 35 secured compress said hose against said nipple, said skirt to the frame and the nut 36 screwed up tight being longitudinally compressed against the cou 25 The numeral 30 designates the brake drum en 40 thereagainst to clamp the body of the L surround ing the aperture between such nut and the shoul der 31 of the coupling. The flexible connection D between the hy draulic brake line and the lateral conduit sup plying the rear wheel brakes is best shown in Fig. 9 wherein the tube is connected to the main line by means of the coupling F. This coupling pling head. 40 4. In combination, a hose, a coupling therefor including a coupling head having a sleeve integral therewith, a cup insertible in said sleeve and adapted to encompass the hose, said pup having a skirt and an integral radial wall, said wall hav ing an integral nipple lying within the hose pas sage, said sleeve being compressed on said skirt is mounted in an aperture in the frame lateral to seal said skirt against said hose and to com 38 and the head of the coupling is clamped by press said hose against said nipple, said nipple extending into the bore of the hose in the zone 50 50 the nut 3B in a manner similar to that just de scribed with reference to main line connections of compression of the wall thereof at least far` enough to prevent any substantial reduction of of the tube B. The opposing end of the tube is joined to a T the diameter of the bore of the hose due to con-A connection 39 of the lateral fluid conduit -by traction of the sleeve portion of said coupling . ‘ screwing the end of the coupling E, such as that member. 5. A hose coupling having a body portion and shown in Fig. 2, into the threaded bore 4U of such coupling. However, in this instance, a seal is a sleeve projecting therefrom, the body portion effected by the conical seat 4 underlying the and the sleeve dei'lning a chamber having an end threaded portion of the stem 2 engaging with a wall, a cup adapted to lie within said sleeve, said 60 perforated conical seat 4l surrounding the end cup having a skirt adapted to encompass a hose 60 of passageway 42 rather than by the square and having a radial wall against which the end ground surface l5 engaging with the radial face of said hose abuts anda nipple extending from 33 of the brake cylinder as in Fig. 4. Thus, the said radial wall and adapted to project within coupling provides two sealing surfaces that will the hose at least far enough to prevent substan permit it to be readily adaptable to varying types tial reduction of the diameter of the bore of the 65 of connection as evidenced by a comparison of hose due to contraction of the sleeve of the cou pling member, said sleeve being compressed on Fig. 2 with Fig. 9. 'I'he method of deforrning the sleeves of the said skirt thereby to seal said cup against the coupling members inwardly to secure the hose bottom of the‘ chamber defined by said sleeve, to the couplings is described and claimed in'my and to compress the hose between the skirt and Patent No. 2,000,680 issued May '7, 1935, while the nipple to prevent ñuid from reaching the fittings or coupling members having inwardly de end of the hose. 6. In a coupling for a iiexible hose having formed sleeves are claimed in my application Serial No. 1'7,937,.ñled April 24, 1935. Various displaceable walls, a thimble encompassing the 75 novel features disclosed but not claimed herein end of the hose and having a central tubular 2,008,650 part extending into the bore of the hose, a cou pling member having a sleeve portion for receiv ing said thimble and said hose end, said sleeve portion being deformed inwardly to displace ma-_ terial of the bore into the thimble and to com press the wall of the hose against the tubular part of said thimble, said tubular part of said thimble extending into the bore of the hose and into the zone of compression of the wall thereof 10 at least far enough to prevent any substantial reduction of the diameter of the bore of the hose due to contraction of the sleeve portion of> said sert against said sleeve, said nipple extending into the bore of the hose in the zone oi! com pression of the wall thereof at least far enough to prevent any substantial reduction of the di ameter of the bore of the hose due to the def ormation of the sleeve portion of the coupling member. 8. In combination, a hose, a coupling therefor including a body portion having a'sleeve integral therewith, said body portion and said sleeve de 10 iining a chamber for receiving the hose, means for preventing fluid from reaching the end of coupling member, said thimble being forcibly the hose comprising a nipple inserted within the held in contact with the body of said coupling hose and having a radial disc formed integrally member when said sleeve is contracted. with said nipple and adapted to engage the end 15 7. In combination, a hose, a coupling therefor of the hose, said sleeve being deformed inwardly including a. body portion having a sleeve integral to compress said hose against the nipple and to therewith, said body portion and said sleeve de fining a chamber having an end wall, an insert 20 for preventing ñuid from reaching the end of the hose comprising a nipple inserted within the hose and having a radial disc formed integrally with said nipple and adapted to engage the end of the hose, said sleeve being deformed inwardly 25 against said hose and said insert to compress said hose against the nipple and to seal said in seal said disc against- the bottom of the cham ber defined by the' sleeve, said nipple extending into the bore of the hose in the zone oi’ compres sion of the wall thereof at least far enough to prevent any substantial reduction of the diame ter of the bore of the hose due to the deforma tion of the sleeve portion of the coupling mem ber. ' ALBERT J. WEA'I'HERHEAD, JR.