USRE12902E - Air-hose coupling - Google Patents

Description

W. w. KILPIATRIGK.

AIR HOSE COUPLING APPLIGATION FILED JULY 1.190s.

Reissued Dec. 29, 1908.

' 2 SHBETS-SHEET L w w l flair) WV W. KILPATRICK.

AIR HOSE COUPLING. I APPLXOATIOQN nun JULY 1,1905.

I Reissued Dec. 29,1908.

2 SHEETS-RESET 2.

v v A I NV EN TO R THE NORRIS PETERS CU WASHINGTON, D C4 UNITED STATES PATENT OFFICE. WALTER W. KILPATRICK, OF ATLANTA, GEORGIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

WESTINGHOUSE AIR BRAKE COMPANY, A CORPORATION OF PENNSYLVANIA.

AIR-HOSE COUPLING.

Serial No.

To all whom it ma concem:

Be it known t at I. WALTER W. KIL- PATRICK, a citizen of the United States, residing at Atlanta, in the county of Fulton, State of Georgia, have invented certain new and useful Im rovements in Air-Hose Couplings, of whic the following is a specification.

This invention relates to hose couplings and is articularly adapted for use as the means or connecting the ends of the air piges used in trains.

t relates to that particular class of couplings now in standard use for coupling air pipes between railway cars and which emody two duplicate heads having lateral communicating openings provided with gaskets, and in which each head is provided with semi-circular interlocking ribs formed concentric with the opening, the two heads being coupled by simply Cplacing the lateral o enings in alinement an relatively rotating t e heads in a vertical plane, whereby the counterpart gaskets of the cou ling heads are rigidly clam ed together. 11 this class of couplings use between cars the two heads are elevated, brought together and allowed to descend in contact, thus giving them a relative rotation and interlocking them. To unlock the heads it is simply necessary to elevate them sufficiently, but it has been found in ractice that the ordinary brakeman often fai s to uncouple the hose connection When the cars are to be uncoupled and the consequence is that the separation of the cars, while the heads are interlocked, sometimes ruptures or injures the hose connection and throws the system out of operative condition.

The ob'ect of m invention is to provide a coupling ead of the above described standard type with improved means adapted to permit the coupli heads to readily separate without injury to t e hose or its connections, when subjected to a longitudinal pull such as that which occurs when the two cars which are connected by the coupling separate.

My improvements may be applied to a standard form of coupling having means for positively lockingi the heads together against relative longitu inal movement when in the normal position, but it is obvious that the invention is not limited to such construc- Specification of Reissued. Letters Patent. Reissued Dec. 29, 1908. Original No. 882,503, dated March 17, 1908, Serial No. 399,876. Application for reissue filed July 1, 1908. 441,508.

tion, since it may be found in certain instances that this ositive locking means for the coupling hea s is unnecessary. It will be understood that the cou ling heads in this class of devices normally ang below the horizontal line of the hose connection, and that when the cars separate the longitudinal pull on the hose connection straightens it and elevates the interlocking heads. This elevation gives the two heads a partial rotation tending to unlock them, and in my improved device the structure is such that when this partial rotation occurs the heads may automatically separate when subjected'to undue longitudinal strain without injuring in any waly the head or the hose connection.

n the accompanying drawings; Figure 1 is a horizontal section throu h two interlocked coupling heads embo ying my invention; Flg. 2 is a side view of one of the heads partly broken away; and Fig. 3 is a detailed perspective view of parts of the automatic interlocking mechanism.

As shown in the drawings, the duplicate "heads 1 are provided with lateral communicating openings 2 having the packing rings or gaskets 3 mounted in the circumferential grooves 4. Each head is provided with the semi-circular rib 5' which is formed on a projecting flange 6 on one side of the openmg1 2 and concentric therewith. On the ot er side of the opening there is an angular arm 7 which leaves a socket 8 between its outer end and the main wall of the head, the flange 6 of the opposite head being adapted to extend into said socket and bear against the inner face of said arm to rigidly clamp the counterpart askets together as in the well known stan ard coupling. According to the preferred construction of my improvements this arm 7 at its outer end is made hollow, leaving a chamber 9 having a slot 10 in its inner wall facin the main portion of the head, and this s ot is made semicircular and concentric with the openings 2. Within the chamber 9 is an angular iece 11 which is slidably mounted and which lias a flange 12 with a rounded outer margin projecting through the slot 10 and formin a rib adapted to cooperate with the'rib 5 o the opposite head. Near the ends of the piece 11 are placed pins 13 surrounded by coil springs 14 which bear against the plate v arm 7.

the rib 5 a longitudinal pull of therib 5.

across this adjustable rib will depress it and allow the parts to separate. On the arms .7

and as a continuation of the adjustable rib there isshown a rib 16 madeintegral with the arm 7 and serving as a positive interlocking means between the rib 5 and the The length of the rigid rib 16. and the relative length of the adjustable spring pressed rib are to be determinedfrom the particular. conditions under which the de-v vice is used, and insome instances the rigid rib may be entirely dispensed with where its A? use isfound to be unnecessary.

It will be noted that in operation the two coupling heads above described are united in theusual way by bringing the lateral openings into alinement and relatively rotating the heads, and the ribs interlock in theusual way. Since, however, the upper paI-tof one rib of each interlocking pair'is eld in'place simply by spring pressure, the

two headsmay be made to separate byllongitiidinal pull at anypoint the rotation above that at which e rib 5*reachesanden ages the ri id 'rib, 16; 1 This rigid rib 16j wi be engage wl en the heads are in normal position hanging down by their own weight, thus secu'rely holding the parts together without any ossibility of'accidental disengagement; ,&however, the cars are uncoupled and by theirseparation a strain is put upon tle connecting hose pipe the two eads are elevated thus rotating themsufii cientlyto disengage the rigid rib 16 from the rib 5 and leav ng only the engagementbetween the rib 5 and the yielding rib-12.. At' this time the yieldin rib '12 bearing against therib 5- exerts a yie ding resistance to rela-' tive longitudinal movement ofv the cou lin heads'uponeach other, but the longitu ina pull applied to the connecting hose pipes by the separation of the cars is suflicient to depress the yielding rib 12 and permit the. coupling heads to readily separatewithout injury to-the hose or its connections.

Having thus described myinvention, what I claim and desire to secure by Letters Patent, is l ,"a further rotation 2,- Ihe combination" ina pipe coupling of twodupli'cate heads having lateral communicating openings, means forv interlocking said heads against endwise separation by rotating their in. .oppdsiti. directioins,...ri1.eans\f itainingthem rigidly locked when they have Lbeen rotateda certain distance, and means for retaining them. .yieldingly lccked when they have been rotated a less distance.

3.. Thecombination in a pipe coupling of two duplicate heads having lateral communicating openings, curved interlocking ing'u on opposite sides of the openings, and one 11 of each interlocking pair being formed in two parts, one part being rigid and the other being yieldingly supported.

4. The combination in a pipe coupling of two duplicate heads having lateral communicating' openings, curved interlocking being upon opposite sides of the opening and one rib of each interlocking pair being formed with its lower part rigid with the headand its upper part separate and spring supported.

5. The combination in a pipe coupling, of two duplicate heads having lateral communicating openings, two lateral semicircular ribs upon each head arranged conthroughout part of its length, and being spring pressed laterally throughoutithe balance of its length.

two coupling heads, interlocking ribs carried by said heads, one of said ribs formed rigid with the head for a short distance, the head being formed with a slot in line with the short rib and being provided with a chamber back of the slot, a metal piece mounted. in said chamber having a portion projecting through said slot, and forming a continuation of said short rigid rib, and" a spring bearing upon said piece.

two coupling heads, interlocking ribs carried by said heads, one of said ribs formed rigid with the head for a short distance, the head being formed with a slot in line with the short rib and being provided with 'a chamber back of the slot, an angular metal iece slidably mountedin said chamber, a ange on said piece projecting through the slot and forming a continuation of said short rigid rib, a cover plate for said chamber, and springs between said plate and slidable metal piece.

8. A coupling head having a lateral opening, a short lateral semi-circular locking rib on said head arranged concentric with said opening, and a depressible spring-supported continuation of sa d rib.

- 9. In a pipe coupling, a con ling head havmeans for rigidly pressing the counterpart E gaskets into engagement with each other up- I on a relative rotary movement of the head i ribs carried by said heads, the said ribs becentric with the openings, one rib upon each headbeing' rigid-and the other being rigidribs carried by said heads, the said ribs 6. The combination in a pipe coupling, of

I 7. The combination in a plpe coupling, of

mg a lateral .openingprovide with a'gasket,

upon a com anion head, and means carried by said hea adapted to yieldingly interlock with a companion head and thereby permit the heads to separate upon being subjected to a longitudinal pull.

10. In a pipe coupling, a coupling head having a lateral opening provided with a gasket, means for rigidly pressing the counterpart gaskets into engagement with each other upon a relative rotary movement of the head upon a companion head, and a yielding rib adapted to interlock with a companion head to yieldingly resist relative longitudinal movement of the heads but to permit the heads to se arate when'subjected to alongitudinal pull 11. A pipe coupling comprising two coupling heads, each having a lateral port opening provided with a gasket and adapted to rigidly clamp the counterpart gaskets together upon a relative rotative movement of the heads in the act of coupling, and a yielding rib carried by the coupling head for engaging a rib on the companion head to yieldingly resist relative longitudinal movement, whereby the heads are permitted to separate upon subjection to a longitudinal pull.

12. A pipe coupling comprising two counterpart coupling heads, each having a lateral opening provided with a asket, a rigid angular arm upon one side 0% the opening and a flange rojecting on the other side, and ada ted to be coupled with a counterpart hea by a relative rotary movement of the flange of one head within the angular arm of the other, said flange bearing against the inner face of said angular arm and holding the gaskets rigidly clamped together, and yieldmg interlocking means adapted to allow the coupling heads to separate when subjected to a longitudinal pull.

13. A pipe coupling com rising two counterpart coupling heads, eac having a lateral opening provided with a asket, a rigid an lar arm upon one side 0% the openin and a flange rojecting on the other sitIe, and ada ted to be coupled with a counterpart hea by a relative rotary movement of the flange of one head within the angular arm of the other, said flange bearing against the inner face of said angular arm and holding the gasket ri idly clamped together, and a yielding inter ocking rib on one of the coupling heads for engaging the other.

14. In a pipe coupling, a coupling head having a lateral opening and ada ted to be coupled with a counterpart hea by a relative rotary movement of said heads, means for re taining the heads positively locked together after rotation to normal osition, and means for permitting said hea s to separate when rotated to an intermediate position.

1 5. In a pipe coupling, a coupling head having a lateral opening and ada ted to be coupled with a counterpart hea by a relative rotary movement of said heads, means for retaining the heads positively locked together when they have been rotated the full distance to normal position, and means for permitting said heads to separate when rotated a less distance to an intermediate position.

In testimony whereof I have hereunto set my hand.

WALTER W. KILPATRICK.

Witnesses:

A. D. SMITH, GEO. A. K. STEVENS.

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