US2930514A

US2930514A - Hose mounting arrangement for liquid dispensing units

Info

Publication number: US2930514A
Application number: US759772A
Authority: US
Inventors: John J Pacey
Original assignee: Gilbert and Barker Manufacturing Co Inc
Current assignee: Gilbarco Inc
Priority date: 1958-09-08
Filing date: 1958-09-08
Publication date: 1960-03-29
Anticipated expiration: 1977-03-29

Description

March 29, 1960 J. J. PACEY 2,930,514

HOSE MOUNTING ARRANGEMENT FOR LIQUID DISPENSING UNITS Filed Sept. 8, 1958 2 Sheets-Sheet 1 INVENTOR JUHN d. PAC! 7 BY p Wm! ATTORNEY HOSE MOUNTING ARRANGEMENT FOR LIQUID DISPENSING UNITS Filed Sept. 8, 1958 J. J. PACEY March 29, 1960 2 Sheets-Sheet 2 l I H I N \& JOHN J. PAg

ATTORNEY United States hatent HOSE MOUNTING ARRANGEMENT FOR LIQUID DISPENSING UNITS John J. Pacey, Springfield, Mass, assignor to Gilbert & Barker Manufacturing Company, West Springfield, Mass., a corporation of Massachusetts Application September 8, 1958, Serial No. 759,772

Claims. (Cl. 222-530) This invention relates to liquid dispensing apparatus and more particularly to improvements in flexible hose handling equipment for gasoline pumps and the like.

There are presently available gasoline dispensing pumps equipped with swing arms of various types for supporting the usual flexible dispensing hose in spaced overlying relationship to the top of a pump casing. Such devices in one fashion or another are rotatable to permit movement of the hose in various directions for greater ease in servicing vehicles and for preventing the hose from becoming caught or wrapped around the casing. Such swing arm assemblies primarily enable, in a simple fashion, the use of a longer than normal hose which may be more freely used over a wider area to service vehicles parked at locations with respect to the dispensing pump.

It is a principal object of this invention to provide an improved swing arm unit of simplified overall construction resulting in an assembly of relativelylow manufacturing cost and readily serviceable in the field.

The invention is characterized by the provision of a rigid arm rotatably mounted on the housing of a dispensing pump to encase and support a flexible hose in overlying relation to the top of the casing and to carry the hose for coupling directly to a rigid outlet pipe within said casing by means of a sealing-swivel having substantially the same axis of rotation as the tubular swing arm.

The above and other related objects'and advantages 'of this invention will be more readily apparent from a reading of the following description of which the following drawings are a part.

Fig. 1 is a partial front elevation of a gasoline dispensing unit embodying the present invention;

Fig. 2 is a plan view of the unit shown in Fig. 1;

Fig. 3 is a longitudinal section of the unit shown in Fig. l and on an enlarged scale;

Fig. 4 is a section taken along the line IVIV of Fig. 3; and

Fig. 5 is a section taken along the line VV of Fig. 3. The swing arm assembly or the present invention is shown in Figs. 1 and 2 mounted on the casing of a gasoline dispensing pump unit which may encase conventional I gasoline pumping andmetering equipment. A swing arm 8 is mounted on the top and adjacent one side of the casing 4 for rotation about a vertical axis. A flexible dispensing hose 6 is supported by the arm 8 in spaced overlying relationship to the top of the casing 4 for swingingmovement above the top of the casing. The normal position of the arm 8 at rest is shown in full line in Fig. 2 overlying the centerline of the casing 4 with the dispensing nozzle 9 hung in conventional fashion on either side of the casing 4. Fig. 2 also shows in dotted lines that the arm 8 may be swung to either side of its normal position to extend the hose in a desired direction to insert the nozzle in the fill pipe of an automobile.

The casing 4 (Figs. 1 and 2) is compositely formed by an inverted U-shaped sheet metal frame 3 to which removable windowed cover panels 5 are secured to comprise the front and'rear walls of thecasing 4. A plate ice 10 (Fig. 3.) is secured at its opposite ends to the frame 3 and supports light fixtures (not shown) for illuminating the dial of the dispensing unit. Plate 10 is provided with an aperture 12 for access to connect the inner end of the flexible dispensing hose 6 to the upper end of a rigid outlet pipe 13 disposed within the casing 4. Hose 6 is provided with a conventional coupling 14 which is threaded into the upper end of a sealing swivel 16 which in turn is threaded onto the piping 13. The hose 6 extends upwardly from the swivel 16 through the interior of arm 3 which in turn is mounted in an ,opening'ls disposed at one side of the top of the frame 3. Arm 8 is preferably an integral tubular memberhaving an upright journal portion, an elbow portion and a radially extend ing horizontal portion. The hose6 extends through the length of the arm 8 and is supported thereby in spaced relationship above the frame 3. The'radial portion of the arm 8 terminates approximately adjacent the side of the casing 4 opposite the opening 18 with the hose 6 extending therebeyond. A clamp 22 at the terminal portion of the arm 8 captures the hose 6 and prevents its inner end from being pulled outwardly of the arm 8 sothat' no undue stresses are imposed on the bend in the hose itself or on the coupling'lo when the nozzle 9 on the outer end circular area surroundingthe dispensing unit.

The rotatable mounting of arm 8 comprises support 24 secured to the top of the casing 4 by screws 21 passing through an integral flange 2S curved to match the curve ture of frame 3 (Figs. 1-3). An'antifriction sleeve hearing 26 (Fig. 3) is mounted in the support 24 and rotatably receives the journal portion of arm 8. Downward axial loading of this rotatable mounting is carried by. a shoulder 28 formed at the upper end of the journal portion of arm 8 and bearing against the upper surface of thebearing sleeve 26. The lower end of sleeve 26 is supported by an inturned flange 27 on the support 24;

" plates 35. The free ends of the cable 39 extendingoutwardly of arm 3 are gripped by a cableadapter 36 which in turn receives one end of extension spring 38. The other end of the spring 38 is received by a depending bracket 4!) which is secured to an inturned flange 39 on the rear side of frame 3. When the arm 8 is in its normal or rest position, the spring 38 is preloaded to exert equal tensions on the two legs of the cable 3%, thelegs being the'portions of cable 30 between the clamp plates as and the cable adapter 36 and with each leg of the same length. If the arm 8 is rotated or swung in either direction from its normal position as shown in Fig- 2, a greater tension will be exerted by the spring 38 on one of the legs of the cable 30 and when the arm'is released it will be returned to its normal position by the action of the spring 38. fThe relatively large diameter of the lower endof arm 8 where the cable 39 is attached enables the use of a relatively weak spring 38 to obtain the necessary torque for returning the arm 8 to its normal position. I i

While the sealing swivel 16 is available as a commercial item, a brief description will be given of its constructon which comprises an upper or female member 42 (Fig. 3) telescopingly receiving a lower male member 44. The telescopic relationship of the two members 42 ahd 44 is maintained by means of a retaining ring 46 which extends outwardly of the lower portion 44 and engages a shoulder 45 within the upper portion 42. The liquid seal of the swivel includes an O-ring 47 disposed in a chamber intermediate the length of the telescoped portions of

members

42 and 44. The coupling16 provides the sole sealing means for this assembly and allows rotational movement of the hose 6 with respect to the rigid outlet pipe '13. It will be noted that the axis of rotation of the sealing swivel 16 is coincident with the ardent rotation of the arm S-and thus as the arm 8 is rotated the hose .6 will. be rotated with respect to the outlet'pipe 13. The swivel 16 is vertically spaced close to'th'e elbow portion of the arm 8 so that as the arm is rotated through a given angle a minimum length of the hose 6 will be subjected to a torsional stress in rotatingthe upper swivel member 42. This feature minimizes stresses in the inner end of hose 6 and thereby prolongs its life. v i i The rotatable mounting of the arm 8 or the frame 3 independently of the rotatable mounting of the hose 6 on the outlet pipe 13. gives several advantages. First, the relatively small size of the swivel 16 insures a good liquid seal proving only nominal resistance to swinging moveinent of the arm 8. Second, the relatively large diameter of the journalportion. of the arm 8 further facilitates this swinging movement and eliminates any undue bear ing stresses. 'It will also be noted that the sealing swivel 16 is of relatively small diameter compared' -with the journal portion of the arm 8 .tofwhich the torque forceof return spring 38 is applied so the force of this spring may be relatively small. Furthermore, since the hose 6 will also rotate'generally coextensively with the arm}! there will be little or no chafing and wear on this flexible component. I

The upper end of a tubular liquid baflie 50 is secured within the lower end of the arm 8 by means of an acorn headed. screw 52 whichis threaded through the arm 8 received in anaperture in the baffie 50. The baffle 50 extends downwardly from the arm 8 through the aperture 12 and below the plate 10. The baffle 50 is' provided as a safety measure to insure that in the event the hose ruptures above the swivel 16, escaping gasoline will be deflected downwardly below the plate on which the light fixtures are mounted;

It is preferable that the arm 8 not be swung at full 360 in order that the arm will not be abused in use. To accomplish this end, screw 52 is purposely chosen Having thus .described my invention, what I claim as novel is:

l. A liquid dispensing device comprising a casing having a top opening, a swing arm rotatably mounted about a a generally vertical axis aligned with said top opening and a support for pivotal movement of the arm, said swing arm comprising a hollow hub portion and a projecting portion terminating radially outwardly of the hub outlet pipe. 1

with a large acorn head which will engage the inner surface of the support flange 25 to limit the extent of rotation of the arm 8 through an angle of approximately 330". It would, of course, be possible to use other stop means but the arrangement described is preferable in view of its simplicity.

The clamp 22 (Figs. 3 and 5) at the terminal end of the arm 8 is secured to the arm by means of screws 56 and may be removed for the insertion of the hose coupling 14 through the arm 8. The bottom portion of the arm 8 adjacent its terminal end is provided with an opening 58 for accommodating the hose coupling 14 as it is inserted into the outer end of the arm 8 inwardly of the terminal portion thereof which snugly receives the hose 6.

It will be noted that this swing arm assembly may be readily serviced in the field and the hose swivel 16 may be easily replaced upon failure simply by removal of one of the cover panels 5 and loosening of screw 52 to drop the baflle 50 a distance suflicient to gain access to the swivel connections. The hose 6 may also be replaced by following the same procedure and add ti na y ing the clamp 22.

'2. A liquid-dispensing' device comprising a casing having a top opening disposed at one side thereof, a swing arm comprising a hollow journal portion, a vertically disposed bearing sleeve support mounted on said casing and aligned with said top opening, said sleeve telescopingly receiving said journal portion to provide for rotation of the swing am about a vertical axis, said swing arm further comprising an elbow portion and a projecting radial portion disposed in spaced overlying relation to the top of said casing and terminatingadjacent the side of said casing opposite said one side, a flexible delivery hose, the inner end portion of which is supported by the radial portion of said arm for rotation therewith and extends through said hollow journal portion interiorly of said casing, a rigid liquid outlet pipe terminating within said casing and aligned with said hollow journal portion and a swivel rotatably coupling the inner end terminus of said hose to said outer pipe independently of-said swing arm support, said swivel being rotatable coaxially with the axis of rotation of said swing arm and, means for yieldingly maintaining the radial portion of said arm centrally disposed with respect to the top of said casing.

3. A liquid dispensing device as in claim 2 wherein a horizontal plate is disposed interiorly of the casing and spaced from the top thereof for supporting light fixtures and 'the like, said plate having an aperture generally aligned with the top openingof the casing and wherein a tubular baffie member is secured to the lower end of the journal portion of said swing arm and extends through the aperture of said plate to shroud the terminal end of said flexible hose and said swivel so that liquid will be directed below the level of said plate in the event the inner end portion of the hose should rupture or the swivel should fail. a

4. A liquid dispensing device as in claim 2 wherein the yieldable means comprises a flexible cable encircling the lower end of the journal portion of said arm, means for clamping said cable against said journal portion on opposite sides thereof, said cable having legs of equal length extending from said clamping means, and a tension spring connected at one end to the outer ends of said cable legs and at its other end to a fixed point relative to said casing. v

5. A liquid dispensing device comprising a casing having a top'opening disposed at one side thereof, an integrally formedv tubular swing arm comprising a journal portion at one end thereof, a vertically disposed bearing sleeve mounted on said casing and aligned with said top opening, said sleeve telescopically receiving said journal portion to provide for rotation of the swing arm about a vertical axis, said swing arm further comprising an elbow portion and a projecting radial portion disposed in spaced overlying relation to the top of said casing and terminating adjacent the side of said casing oppo i e s q-p e d a. flexible deliver hose, the inner end portion of which extends through the radial portion of said tubular swing arm, around the elbow portion thereof and through and beyond the journal portion of said arm and terminates in spaced relation to said journal interiorly of said casing, a rigid outlet pipe terminating within said casing below and aligned with said hollow journal portion, a swivel rotatably coupling the inner end of said hose to said outlet pipe separately from the journal portion of said arm, said swivel being rotatable coaxially with the axis of rotation of said swing arm and means for clamping said flexible hose relative to the outer terminal end of the radial portion of said swing arm to prevent stresses from being imposed on the inner end portion of said hose when the outer portion is deployed to deliver liquid.

References Cited in the file of this patent UNITED STATES PATENTS 1,507,260 Snow Sept. 2, 1924 1,756,094 McGuirk Apr. 29, 1930 2,518,443 Bagnard Aug. 15, 1950 FOREIGN PATENTS 752,730 Great Britain July 11, 1956