US1470209A - Pump coupling - Google Patents

Description

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N. R. WHITE PUMP COUPLING Filed Deo. 13. 1919 Patented @et 9, 1923..

STATES NOAH R. WHITE, 0F DELTA, COLORO.

PUMP COUIPLING.

Application tiled December 13, 1919. Serial No. 344,683.

T o aliwlwm. it may concern.:

Be it known that I, NOAH l. WHITE, citizen of the United States, residing at Delta, in the county of Delta and State ofColorado, have invented certain new and useful llmprovements in Pump Couplings, of which the following is' a specification.

This invention is a pump coupling and has for its principal object the production of a device which is applied to the tubing of an ordinary pump for facilitating the attaching of the tubing to conventional forms olP air valve cases of pneumatic tires of all types.

Another object of this invention is the production of a couplin for an air pump used to inate pneumatlc tires, the device being used to expedite the connection between the rubber tube of the pump and the case of the air valve.

A still further object of this invention is the yproduction of a connection for air pumps, used to inflate pneumatic tires which is provided with means for forming a tight connection between the case of the air valve and the conduit inserted into the rubber tubing of the pump so that no air will be wasted while the tire is being inflated.

One practical form of construction and assembly of the present invention will be hereinafter described and is illustrated in' the drawing, in which- Figure 1 is a side elevation of the connection about to be applied over the case of a conventional air valve of a pneumatic tire.

Figure 2 is an enlarged bottom plan view of the connection and a top plan view of the air valve case to be inserted thereinto.

Figure 3 is a vertical section through the connection with the rubber tubing detached and showing also in elevation the reducing nut used to allow barrel cases of small valves to be firmly received within the device.

Figure 4 is a vertical section through the device illustrating a slightly different form of a cushion means for the cupin which the outer end of the valve case is received, the reducing nut being shown in section.

ln the preferred embodiment of the present invention, about to be specically described. the housing of the connection is indicated at 5. rllhis housing has a flanged inner end 6 while the opposite end is open as indicated at 7. A thickened boss 8 is formed on the housing 5 adjacent its open end 7 and has ears 9 extending radially therefrom in opposite directions, as illustrated in Figures 1, 2 and 4, these ears being provided with bent over extensions 10 for facilitating the gripping of the ears and preventing the users fingers from accidentally slipping from the device when the same is being applied or detached. Above the boss 8 the body of the housing is externally milled as shown at 11 so that it may be easily grasped in the usual manner. The lower portion of the interior of the housing 5 is smooth, although screw threads 12 are formed within the housing opposite to each other as illustrated in Figures 3 and 4 thus providing an unobstructed even surface between the ends of to appear.

A cup 13 is reciprocally mounted within the housing 5, the cup comprising a cylindrical wall having a closed end asis obvious from the showings in Figures 3 and 4. rlhe metal conduit 14 extends through the flanged end 6 of the housing 5 and projects into the cup 13, the cup being held from displacement from the inner end of the conduit 14 by the iange 15. It will be noted that the inner end of the conduit 14 projects slightly beyond the flange 15 and has a packing washer 16 received thereover, as will be hereinafterexplained. The rubber hose 17 of a pump is receivable over the projecting end of the conduit 14, being held against displacement by the clamping band 18.

In Figure 3 it will be seen that the cup 13 is provided with a cushioning means in the form of a block of soft rubber, as shown at 19, while in Figure 4 it will be seen that a coiled spring 20 is received about the inner end of the conduit 14, bears upon the cup and also upon the flange 6 of the housing 5 holding the coiled spring 20 for constituting a yieldable bearing for the cup 13.

For the purpose of illustrating the operation of the device, a conventional form of valve casing 21 is illustrated having a valve 22 therein which can be provided with the usual base for attaching the saine to a pneumatic tire. The outer portion of the valve casing 21 has interrupted threads 24 providingflat surfaces 25 for purposes to be set forth.

It should be noted that a reducing nut 26 is provided and it is hollow as shown in Figthe threads for purposes ure 4 having an externally threaded sleeve 27, .the inner portion of the sleeve being provided with interrupted threads 28.

The device should be used upon a valve casing corresponding to the size of the housing, and the reducer need not be employed, although when it is to be used upon a smaller sized valve casing, the reducer is screwed into engagement with the threads 12 ot the housing 5. Whether or not the reducer is used the operation is the same and for this reason the description will be devoted to the use without the reducer. Under such conditions the housing 5 is slipped over the outer end of the valve casing 21 for under such conditions the threads 24 of the valve casing will pass between the ends of the threads 12 of the housing 5, while the flat surfaces 25 of the valve casing will pass in front of the threads 12. The housing is slipped down onto the valve casing until the outer end of the casing strikes against the packing washer 16. At this time, the operator can grip the ears 9 and easily turn the housing 5 so that the threads 12 will engage the threads 24 of the valve casing 21. Thus the housing will be held firmly upon the valve casing and this engagement will cause the end of the Y- valve to be brought into a firmer binding engagement with the packing washer 15, the inward movement of' the casing into the housing and the housing slipped thereover and the screwing action of the housing onto the casing causing the cup 13 to be moved toward the flanged end 6 of the housing 5` for a slight distance, either against the resistance of the block 19 or against the resiliency of the coiled spring 20. In either instance the cup will be held to force the iiange 15 of the conduit 14 to bind the packing washer 16 firmly upon the end of the casing 21 and for this reason there is no chance of the air escaping at the point of connect-ion when the airis passing through the device into the tire. Under such condition the inner end of the casing 21 may be received over the inner projecting end of the conduit 14 while the jamming actionv imparted to the packing washer-16 by the flange 15 and the cup 13 due to the reinforcement of'- the cup by either the cushion block 19 or the resilient spring will form an air tight connection between these elements.

As is known, with the devices commonly in use, the rotatable nut ori the end of the hose of an air supply is screwed onto the outer end of the valve casing which is a laborious and time occupying operation and i very often the connection 1s not secure enough to prevent the escaping of air under such high pressure.

With the present invention however, the housing is slipped quickly over the outer end of the casing, bringing the casing into a jammed engagement with the packing washer 16 against the strength of the'cushion block 19 or the resiliency of the coiled spring 20 as the cup will be forced slightly toward the inner end of the housing 5. The housing is then given a quick turn to one side moving the threads 12 thereof into engagement with the threads 24 of the casing and then the air under high pressure may be passed into the tire without any of the air escaping. As soon as the tire is inilated the housing is then turned a quarter of a revolution and is quickly lifted from the valve casing. Thus by a very easy operation in a minimum amount of time, the device can be attached or detached to the valve casing and when in an attached condition is constructed so as to positively prevent the accidental escaping or leaking of air passing therethrough.

The foregoing description and the drawings have reference to what may be considlered the preferred, or approved form of my invention. It is to be understood that I may make such changes in construction and arrangement and combination of parts, materials, dimensions, et cetera, as may prove expedient and fall within thevscope of the'v appended claims.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a connection for hose pipes and tire valve stems, the combination with a'valve stem, of a housing for receiving the valve stem, a cup slidably mounted in the housing for receiving the upper end of the valve stem, and compressible resilient means dis* posedin the housing and engaging the cup for normally urging the cup in fluid tight engagement with the valve stem.

2. In a connection for yhose pipes and tire valve stems, the combination with a tire valve stem, of a housing slidably and rotatably mounted upon the valve stem, a cup slidably mounted within the housing for ,receiving the upper end of the valve stem,

and compressible and resilient means disposed in the housing and engaging said cup for normally urging the same in Huid tight engagement with the valve stem, the cup having fluid tight engagement with the housing, and means for permitting the detachable locking of the' housing on the valve stem in an adjusted position thereon.

3. In a connection for hose pipes and tire valves, the` combination with a tire valve,

stem having a seat formed on its outer end,

of a housing slidably and rotatably assof ciated with the'stem, the housing and stem having cooperating mutilated threads to permit the quicky detaching and connection of the housing with the stem, the mutilated threads permitting sliding movement of the housing on the stem, a cup slidably mounted in the housing and.y snugly engaging the Macao@ same, a conduit rigidly carried'by the cup and extending outwardly of the housing for receiving the hose, and compressible and resilient means disposed in the housing about the conduit and engaging one wall of the housing and the cup for normally urging the cup into Huid tight engagement with the valve stem, when the housing is placed over the valve stem.

4. A device for connecting hose pipes with tire valve stems comprising a housing for connection With a valve stern and adapted to slidably and rotatably engage the valve stem, diametrically disposed radially extending ears formed on the opposite sides of the housing to facilitate the rotation thereof, and oppositely extending right angularly disposed lugs formed on the terminals of the ears to facilitate the sliding movement on the housing on the Valve stem. n

lin testimony whereof l aiix my signature in presence of two Witnesses.

NOAH R. WHlITlE.

Witnesses LEONARD BAIRD, WALLACE STALLINGS.

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