Патент USA US2113853код для вставки
April 12, 1938. G. B. NICHOLSON v 2,113,853 FLUID DISPENSING NOZZLE VALVE Filed Feb. 23, 1957 2 Sheets-Sheet l INVENTORQ ' A _TTORNEYS. April 12, 1938. ' 2,1 13,853 6.} B. NICHOLSON FLUID ~ DISPENS ING NOZZLE VALVE Filed Feb. 25, 19:57 2 Sheets-Sheet 2 . A Md. \M WQ\ 3. t\L .w r,2 m. A/ 8a m , w“ INVENTOR. We»? a. m 0 BY 77/ ‘ 4s ATTORNEYS Patented Apr. 12, 1,938 ' 7 ‘2,113,853 r um'rso STATES rice U 2,113,853 FLUID DIS‘PENSING NozzLEvALvE George B. Nicholson, Erie,’ Pa. ‘ Application February 23, 1937,v Serial No. 127,146 (01. 1379139) 4 Claims. provements in nozzle valves for gasoline dispens posed around the valve stem 22 andheld in posi—' tion by a knurled'nut 21, to project therebeneath. ing pumps or the llkey‘étl'ld it is among the ob jects' thereof to provide a nozzle with a manually The valve Z‘I is accessible by the removal of a cap 28 having an annular recess 23 for receiving a ‘ This invention relates to new anduseful im operated valve construction which shall be espe coil spring 3!) which abuts-the upper part of the U cially suited for controlling the ?ow of the ?uid valve 2I to- normally-bias it downwardly against ‘from the nozzle end when caution is required to’ prevent over?ow _v of the receiving container or tank.' , ‘, 1 " , ‘.Another object of ‘the invention is'the provision ‘of a Valve structure for ?uid dispensing nozzles its seal 3I. " ‘ ‘ y p The operating lever I3 'is slotted at 32 to re-. ceive a lever 33 which is'pivoted to the operating “ lever at 3'4, ‘lever 33- being provided with a con- v10 ' tact or wearing plate 35. ' TheV lever 33 is fur- ‘ 5 which shallhavea variable leverage acting upon ther provided with a notch or slot 36 which co the control valve with a greater leverage for operateswitha pin 31 extending transversely. of slow ?ow operations than at ,full' or maximum ‘the. slot 32 oflthe operating lever l9. Fig. 1 il- _ 'lustrates the normal position of the operating '‘ Theserand other objects of the invention will I lever I3 andfwhat may be termed the cam lever become more "apparent, from a consideration of 33, the latter abuttingtagainst ‘the recessed por the accompanying drawings constituting a part tion or groove 38 of'the guard, in which the oper flow. / ‘ - hereof in which like reference characters desig 7 20' nate like parts and in which: , , Fig. l is a view partially in section and partial ly in side elevation of a ?uid dispensing nozzle and valve embodying the principles of this in vention; and ' Fig. 2 a vertical cross-sectional view of the valve and control lever thereof. With reference to the several ?gures of the drawings, the structure therein illustrated com ating lever rests with its tip in the bottom of the ' groove 38. In the position of the levers‘ as shown 20 in Fig. 1, both valves 9 and 2| are in their nor mally closed position, so heldby their respective coil springs I I and 30, and valve stem 22 extends the maximum distance downwardly from the knurled bushing 21. To start flow of ?uid through the nozzle end Hi, the operator grips the valve by placing the palm of the hand above the conduit portion I and extending the ?ngers around and beneath the operating lever I9. During the initial movement of the latter, the j prises a conduit portion I having a threaded ?t 3.0 ting 2 for connection witha ?uid delivery hose conduit. The member I has an enlarged portion cam lever 33 is raised at its pivot point 34 and 3 forming a valve chamber generally designated the bottom end or tip of lever 33 resting against by the reference numeral 4 from which a di the bottom of groove 38 of guard 16 acts as a ful vergent flow passage 5 extends with a threaded crum which develops a greater leverage against ?tting'6 for receiving a nipple 1 having a shoul ' the bottom of the valve stem 22 than if the latter der 8 forming a chamfered valve seat for a valve were directly contacting the main operating lever . 9 which is mounted in a spider I0 and biased by a coil spring II to normally engage its seat on “ 40 shoulder 8. The nipple ‘I is connected by a nipple I2 to a nozzle I3 having thev usual armored flex ‘ ible nozzle end I4. The conduit casting I is pro vided with an eyelet I5 to pass over a hook or I9. This leverage is available only during the travel of the operating lever within the limits of , clearance of the pin 31in the slot 36, and when pin'3‘I abuts. against the lever 33 ‘in the bottom of the slot/33, it will lift lever 33 with it for the remainder of the movement of the operating lever lever arm of gasoline dispensing pumps as is’ I9 until the latter abuts the conduit portion I .. common practice. As shown in the drawings, the leverage of the , The bottom portion of the conduit casting I is provided with a guard Iii riveted to the conduit frame at I‘! and I8 and a valve operating lever I 9 is pivoted to a lug portion of the casting I at 21]. The main operating valve of the dispensing nozzle comprises a valve 2| mounted on a stem 22 disposed through an opening 23 in the bottom of the enlarged portion 3, the latter being coun~ terbored or recessed at 24 to receive a packing 55 gland 25 which is compacted by a bushing 26 dis operating lever I9 is about four to one with the bottom of valve stem 22‘ as the fulcrum point. During the initial movement of the operating lever, however, the leverage is multiplied through the cam lever 33 to obtain about 30% more lever age, thus clearly minimizing the force required 50 to operate the main lever I9. By thus multiplying the leverage for moving the valve stem 22 during its initial opening of the main control valve 2|, the operator with very little eifort can obtain more sensitive control ‘of 2,113,853 2 the valve 2|, which is highly desirable to prevent overflow of the receiving tank when it is nearly full. It is evident that when the main valve 2| is liited from its seat 3|, the force of the ?uid pass ing through conduit I and through the valve chamber 4 will unseat valve 9 and permit ?uid flow through the dispensing nozzle 14. It is evident from the foregoing description of 10 this invention that nozzle valves 'for ?uid dis pensing pumps or pressure lines made in accord ance therewith facilitate the accurate and safe stern, means on the operating lever for engaging the second named lever to interlock said levers in response to movement of the operating lever and a stationary abutment for said secondary lever constituting a fulcrum for the free end of said lever during partial movement of the operating lever. I ~ 3. In a fluid dispensing nozzle valve, an oper ating valve having a valve stem projecting from the valve chamber, an operating lever for actuat 10 ing said stem, a second lever pivoted to said op erating lever for engaging the end of the valve dispensing of ?uids, particularly gasoline around , stein in response to movement of the operating ?lling stations where it is undesirable and dan 15 gerous to permit any over?ow. ' lever, means on the operating lever coacting with *th'e'ysecondi named lever for interlocking said 15 Although one embodiment of the invention has , levers during, partial movement of the operating been herein illustrated and described, it will be lever and aistationary abutment for said second apparent to those skilled in the art that various ' ,ary leverconstituting a fulcrum for the free end modi?cations may be made in the details of con- , _ oi saidlever during partial movement of the op 20 struction Without departing from the principles ' erating lever. herein set forth. I claim: . ~ 1. In a fluid dispensing nozzle valve, an oper ating valve having a valve stem projecting from 25 the valve chamber, an operating lever for actuat ing said stem, a secondary lever pivoted at one , end to said operating lever for engaging said stem, and a stationary abutment for said secondary lever constituting a fulcrum for the free end of 30 said lever during partial movement of the operat ' ing lever. 2. In a ?uid dispensing nozzle valve, an oper ating valve having a valve stem projecting from the valve chamber, an operating lever for actuat 35 ing said stem, said lever being slotted in the region of the valve stem, a second lever disposed in the slot of the operating lever and being piv oted thereto for engaging the end of the valve v,4. In a ?uid dispensing nozzle valve, an operat ing valve having a valve stem projecting from the valve chamber, .an operating lever for actuating said stem, said lever having a slotted opening be neath the valve stem, a second lever disposed in 25 said opening and pivoted to the operating lever, a stationary abutment for said second named lever constituting a fulcrum for the free end of said lever, said second named lever having a slot for engagement by a pin provided in the operating 30 lever whereby during partial travel of the latter the second named lever is fulcrumed at one end 'to multiply the leverage acting upon the valve stem and during the remainder of its movement interlocked with the operating lever to displace 35 the valve stem. 1 ‘GEORGE B. NICHOLSON.