Nov. 26, 1946. I E. B. CHAMBERLAIN ET AL 2,411,505 THEFT PROOF FILL PIPE CLOSURE Filed Jan. 11, 1945 56. '3 I �537 M Kozme' �1 5 Omnazzmu INVENTOR. @WMM Patented Nov. 26.,? 1946 2,411,505 UNITED STATESv2,411,505PATENT * oFFics THEFT-PROOF FILL PIPE CLOSURE Earl B. Chamberlain, Fort Wayne, and Robert? M?. Y Kolt'er, Decatur, Ind. Application January 11, 1945, SerialNo. 572,330 5 Claims. (01. 22'0~?~s6> 2 ? This invention relates to a theft proof ?ll pipe _ whichqis usually a straight-sided or cylindrical closure for automobiles. More especially, it re lates to a ?ll pipe closure which. does not utilize tube. The tube isusually ?anged at3andturined inwardly asat 4 to form a sealing surface 5} The a lock of any of?the usual types. ?ange is usually notched in two diametrically 0p posed places? 1' to receive locking projectionson , Numerous attempts have. been heretofore made to. prevent the removal of gasoline from automobile tanks through the ?ll pipe of such the usual ?ll pipe cap (not shown). tanks, either by siphoning, pumping, or, other ring- . 9' to which is ?xed an annular gasket l l , The ?ll pipe closure comprises an annular methods. Usually these devices take the form which is adaptedto engage the?ll pipe surface 5. of a??ll cap which is removable from the ?ll pipe, 10 To the inner periphery of ?the ringv 971s ?xedr as by butis locked in position? b?y?a key-operated lock. ?welding, or in any other suitable manner, a stirThese devices are often inconvenient in that rup l3, which has a circular central plate or baf-� the keys theretoiare- not availablewhen required. ?e l5, provided with?a plurality, of perforations Sometimes, water accumulates in the locks? and l6, and two upwardly extending arms I?! which freezes. Frequently, the caps are not replaced 15" are ?xed at their free ends to the ring... The arms on the?ll pipe after ?lling an'd'become lost; extend substantially at right angles to the baiile.~ An object "of the invention is to provide a clo The arms I? are slightly less in width ?than the sure which, once it is installed, will never? be re notches 1 and are spaced from each? other so that the distancefrom the exterior surface .of Another object of the'invention is to provide a 20' one arm to that of'the other is slightly less than closure which is easily installed; , the distance from'theinner edge ofv one notch to Yet another object of. the invention is tofpro that" of the other. Thus the notches will readily vide a closure which opens inwardly in response receive? the arms and yet will hold the arms and to the insertion of a dispensing nozzle._ the closure assembly as? a whole against-rotation It is another objector the'invention to provide '25 in the ?ll pipe. ,, , , a closure which returns automatically to the? Aprojection I9- i'spuhched from each of the closed position as soon as the dispensing nozzle arms ?l1 and projects upwardlyv and-outwardly. is vwithdrawn. ' The distance'acr'oss the outer ends of the projec Another object of the invention is to'provide'af tions is? greater than the distance between the ?ll pipe closure which will accept liquid at sub? 30 edges of ?the notches ?I, so that'when the device stantially the normal rate of from 12 to 15 gal-v is in' position in the ?ll pipe, the ends of the pro Ions-per minute and yet will prevent? the insere. jections will? engage. the ?anges 5 and preventv tion of a tube or pipeof any ?substantial size. withdrawal of the assembly. The projections are Still another'object?of the invention is to'pro sprungli'nwardly'by theedges of the notches dur moved. ? '_ I vide a closure which is not" removable after in stallation. 35 ing insertion. A further object of the invention is? to provide a ?ll pipe closure which prevents the insertion? ?xed? in a central'open?ing 23 of the ba??le l5. A stem 25 is slidably, mounted in the opening 21 of the guide? and screwed'or otherwise ?xed to the of ?means forremovingliquid? from the associat ed tank. v , These and other objects'will become'apparent . A cylindrical guide 2| isstaked or otherwise v 40 upper end of theistem'is the closure member 29. A coiled compression spring ?3| surrounds the from a study, of this speci?cation and the draw ing?which is'attached hereto and forms a part guideand'stem and bears atone end on the baillev I5 andat?th'e other on the undersidefof the. .clo-> hereof in sure meinbefZl-T; which? - ? _ Figure 1 is a vertical sectional view of the ?ll 45 pipe and the ?ll pipe closure taken substantial ly on the line |?l of Figure 2. _ Figure 2 is a view taken from the bottom of Figure 1 showing the perforated portion of the stirrup. v - ' member 29 so that the latter may be forced downwardly between the arms. ' A cover 33 is provided with an opening 35 50 which is smaller in diameter than the closure Figure 3 is a horizontal view, partly in section and partly in plan, taken on the line 3--3 of Fig member 29. The cover is bowed outwardly at 31 to provide a slanting, curved surface which will assist in shedding water and which will present .ure 1. Referring now to Figure 1, the numeral I rep . resentsthe ?lfpipe?ofrthe usual automobilel;w ? The distance between the inner surfaces of the arms is greater than the maximum diameter of in a pleasing appearance. ' W. Thetgouterz periphery or the coverqis. crimped - I 2,411,505 3 about the periphery of the ring 9 and gasket II at 39 to hold them securely in place. The cover is then ?anged inwardly and downwardly at M and extends below the upper end of the ?ll pipe to prevent water from running from the cap onto the surface 5. The gasket II is preferably made of relatively thick and resilient material such as cork or syn thetic rubber so that the gasket willbe, compressed and ?heldcompressed by the?, engagement of the projections l9 and the ?ange 3 of the ?ll pipe. 4 said notches, a ba?le supported by said arms trans? versely of said pipe to prevent the insertion of liquid removing means, a cap ?xed to said sup port and having a ?ll opening, a closure, said arms being disposed to guide said closure, guide means in said ba?le for said closure, and yieldable means for urging said closure into closing position with respect to said ?ll opening. 3.~The combination with a fill ,pipe having an end flange-provided with? opposed znotches, a support comprising an element adapted to rest upon the outer side of the ?ange, arms ?xed to and depending from said element and passing through said notches, yieldable means projecting To install the closure, the usual ?ll pipe cap is. 15 outwardly and upwardly from the outer sides Operation removed and the assembly described above/is of said arms for engaging the inner side of said entered in the ?ll pipe with the arms ll riding ? ?ange to centralize the support in the pipe and to prevent withdrawal of the support, a ba?le in the notches ?I of the ?llpipe ?ange 3. The supported by said arms transversely of said pipe assembly is then forced downwardly so that the projections l9 are forced inwardly. The gasket 20 to prevent the insertion of liquid removing means, a cap ?xed to said support and having a ?ll open is compressed until the projections clear the ?ange, whereupon they spring radially outwardly - ing, a closure, guide means in said battle for said closure, and yieldablev means for urging said again under the ?ange 3 to hold the gasket com closure into closing position with respect to said pressed and to hold the assembly in the ?ll pipe. When the tank is to be ?lled, the dispensing 25 ?ll opening. nozzle is placed on the closure member 29 and force is applied thereto to depress it against the 4. The combination with a ?ll pipe having an end ?ange provided with opposed notches, a support comprising an element adapted to rest upon the outerside of the ?ange, arms ?xed to and depending from 'said element and passing force of the spring 3i. Preferably the closure member should be depressed all the Way. When the usual nozzle valve is opened, the gasoline flows through said notches, outwardly directed spring outwardly and downwardly around the bai?e [5 ?ngers on said arms, adapted to engage said end into the tank. Some of the liquid also flows flange and side Walls to prevent withdrawal of through the holes [6. the support from and to centralize said support When the nozzle is withdrawn, the spring 3|, acting on the closure member, forces it upward 35 in said pipe, a baf?e supported by said arms trans versely of said pipe to prevent the insertion of until it contacts the cap 33 and closes the pipe. liquid removing means, a cap ?xed ,to said sup The closure member thus prevents the entry of port and having a ?llopening, a closure, guide dirt, water or other foreign matter. ? means in said ba?ie for said closure, yieldable It is obvious that various changes may be made in the form, structure and arrangement of parts 40 means for urging said closure into closing posi tion with respect to said ?ll opening, said arms without departing from the spirit of the inven being constructed and arranged to serve as addi tion. Accordingly, applicants do not desire to tional guide means for said closure. be limited to the speci?c embodiment disclosed 5. The combination with a fill pipe having an herein primarily for purposes of illustration; but end ?ange provided with opposed notches, a sup instead, they desire protection falling fairly within port comprising an annular element and a gasket the scope of the appended claims. adapted to rest upon the outer side of the ?ange, What we claim to be new and desire to protect arms ?xed to and depending from said element by Letters Patent ?of the United States is: and passing through said notches, outwardly di 1. The combination with a ?ll pipe having an rected spring ?ngers on said arms constructed end ?ange provided with opposed notches, a and arranged'to engage said ?ange to hold said support comprising an element adapted to rest support against withdrawal from the pipe, to upon the outer side of the ?ange, arms ?xed to hold said gasket compressed and to centralize and depending from said element and passing said support, a ba??le supported by said arms trans through said notches, yieldable means projecting outwardly and upwardly from the outer sides of 55 versely of said pipe to prevent the insertion of liquid removing means, a cap crimped aboutv said arms for engaging the inner side of said ?ange and supported on said element, said cap having to prevent withdrawal of the support, and a baf?e a? ?ll opening, closure means, guide means. in supported by said arms transversely of said pipe said bai'lie for said closure and yieldable means to prevent the insertion of liquid removing means. 2, The combination with a ?ll pipe having an 60 for urging said closure into closing position with respect to said opening. end ?ange provided with Opposed notches, a sup port comprising an element adaptedto rest upon EARL B. CHAMBERLAIN. the outer side of the ?ange, arms ?xed to and depending from said element and pass'ing'through ROBERT M. KOLTER.