Aug. 28, 1934. H. W. KULP ET AL . . 1,971,530 WALWE GRINDING TOOL Filed July 28, 1932

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Patented Aug. 28, 1934 1971,530

UNITED STATES PATENT OFFICE

1971,530 WALWEGRNONG TOOL Harry w. Kulp and Riartin C. Dellinger, Lan caster, Pa., assignors to K-D Manufacturing. Coalpany, Lancaster, Pa., a corporation of Pennsylvania, Application July 28, 1932, Serial No. 625,488 4 Claims. (CI. 51-29) inis application is a continuation in part of guard means inseparable from said handle and Ou2" application Ser. No. 563,440, filed September Cup While they are aSSociated and adapted to 17, 1931, and is filed in Substitution therefor. engage the radially outer portions of the poppet This invention relates to waive grinding tools Valve being operated upon to prevent displace 2.5 of the suction cup type intelladed for use pri ment of the suction cup therefrom; and to pro 60 marily in continection with the poppet valves of vide Spring means for forcing the guard means internal combustion engines. down against the inclined surface of an engine Heretofore it has been common practice to block of the multiple cylinder v type motor, provide the upper end or Surface of the valves Said Spring means being also inseparable from l0, with a slot or with two recesses to be engaged said cup and handle while they are associated 65 by the suitably formed end portion of a valve and being maintained in proper operative posi grinding tool. Whereby the valve night be oscil tion by said handle and cup. lated to grind it on its seat, but more recently It has been found in practice that where the this practice has been discontinued in order to valves of a multiple cylinder V type motor such 15 obtain a better balance and more uniform shrink as the new. Ford V-8 are being ground the upper 0 age and expansion of the valve, With the result and outer ends of the engine block are at such that the majority of automobile internal com an ange to the horizontal that the guard means bustion engines now produced are provided. With Will not drop down against the same by gravity. poppet valves having smooth upper surfaces of In this application we show and describe only .20 unbroken area, and consequently with such the preferred embodiment of our invention simply 75 . valves there is no provision for obtaining positive by way of illustration of the practice thereof, as engagement in a lateral direction with the opera by law required. However, We are well aware tive end of the valve grinding tool. that our invention is capable of other and dif To meet this condition recourse has been had ferent embodiments and that the various details 25 to a rubber suction cup-suitably mounted on thereof may be modified in several ways, all with 80 or secured to the lower end of a stick or operat out departing from our said invention. Therefore, ing handle, which is to be rolled alternately in the drawing and description herein are to be con opposite directions between the operator's hands. sidered as merely illustrative and not as exclusive. This has in large measure met the situation, but In the accompanying drawing: ... 30 has been open to the objection that in use around Figure 1 represents an “exploded' perspective 85 the usual garage the lower surface of the Suc view of a valve grinding tool embodying Our in tion cup has become greasy, or in some instances vention; oil has been left upon the upper Surface of the Figure 2, a vertical central sectional view poppet valves, with the result that in use the through the suction cup with its sleeve, in asso 35 suction cup has crept sidewise or in a radial ciation with the guard and Spring, and prior to 90 direction with respect to the valve, so getting the association of the handle with the suction the valve grinding tool out of alignment with the Cup; waive stem and also breaking the Suction grip Figure 3, a view similar to Fig. 2, but with the of the tool on the upper face of the valve. suction cup and handle associated or in final as 40 In several extensively used automobiles as at sembled condition; and present produced the poppet valves of their in Figure 4, a view similar to Fig. 3, showing the ternal combustion engines have their upper Sur too as operatively applied and Suctionally grip faces disposed slightly above the upper Surface ping the upper surface of a poppet valve mounted of the engine block, there being a sharp or abrupt in an engine block, which is shown in fragmentary 45 radially outer edge or portion of the respective section, the spring forcing the guard endwise valves extending at an abrupt angle to, and against the engine block. 00 upward from, the engine block. - Referring now in detail to the drawing, A. des our present invention has been evolved to ignates the engine block; B, a valve port thereof; avoid the above objections and with the above C, a poppet valve closing said port B and having 50 mentioned construction of the present day au a stem D extending down through a bushing E. tomobile internal combustion engine particu mounted in the valve guide F, all as well known larly in mind and has for its primary objects to and in extensive use at the present time, and all provide as an unitary tool a rubber Suction Cup said parts will be of any well known construc valve grinder having a handle and Suction Cup tion and the bushing E may be a Split bushing. .55 associated therewith in combination with a However, the valve head C will be of such thick- io 2 1,971,530 ness and so related to its cooperating Seat that the upper end of Said sleeve Socket, in combia it will project slightly upward above the upper tion with an operating handle having a Shank face of the engine block A. and will have a Verti adapted to be inserted in said sleeve SCCket to cally extending surface presented at an abrupt permanently associate Said handle and Cup, Said 5 angle to the adjacent portion of the Upper Sull handle having a portion of greater CrOSS Sectional face of said block A, so as to be positively engaged diriaension than the diameter of the opening in by the vertically extending adjacent portion of said guard, and Said guard having a portion the inner wall of the guard 2, whereby movement adapted to extend below the lower edge of the of the guard 2 radially inward with relation to cup in operation and to engage an opposed face the valve head C, beyond the radially Outer edge of the waive being operated upon to prevelt dis 85 or face thereof will be prevented. placement of the cup from the said Valve. 1 designates the usual stick or handie of a SUC 2. A valve grinding tool consisting of a rub tion cup type valve grinding tool, Said handle ber Suction Cup having an upwardly preserted being formed adjacent its lower end With a deep integral Sleeve Socket, a guard having an Open 5 annular groove 6 and with a slightly tapered Short ing slightly larger than the external diametel' 90 shank 5 extending downward beyond Said groove of said sleeve Socket and Smaller than the lowei' 6, said shank 5 being forced down into the sleeve part of the cup and adapted to be threaded Over 4 integral with the rubber suction cup 3, the up the upper end of Said Sleeve Socket, in combia per end of the sleeve 4 fitting into and contract tion with an operating handle having a Shank 20 ing in the groove 6 to aid in holding the Cup 3 adapted to be inserted in Said Sleeve SOcket to 95 and handle 1 in a SSociated relation. perianently a SSociate Said handle and Cup, Said However, before the cup 3 and handle i are a S Shank having a portion of greater CrOSS Sec sociated as above, the bell shaped guard 2 is . tional diinension than the diameter Of the opeia dropped down over the upper end of the sleeve ing in Said guard, aind Said guard having a por 25 4 with the recessed face of said bell 2 presented tida adapted to extend beiOW the lower edge O downward toward and concentric with relation Of the cup in Operation and to engage an Op to the upper face of cup 3, the helical Spring 7 posed face of the Wave being Operated upon to being then slipped over the sleeve 4 and resting prevent, displacement of the cup forin the Said on bell 2. The bell 2 is provided with a central wave. 30 perforation or circular hole 2a of Sufficient diame 3. A Wave grinding tool consisting of a rub 05 ter to receive the sleeve 4, but of less diameter er Suction Cup having an upwardly presented than a portion of the handle 1, and preferably integral Sleeve Socket, a guard having an Open of less diameter than a portion of the Shank 5 ing slightly larger than the exterinal dialister of said handle 1, as illustrated in FigS. 3 and 4, of Said sleeve Socket and Sinailer than tie lowe: 35 whereby the guard 2 will be permanently aSSoci part of the cup and adapted to be threaded over ated with the other two elements of the tool the upper end of Said sleeve Socket, in combi against unintentional separation from the tool. natio. With an Operating handle having a Shank Also the spring 7 will have its lower portion bear adapted to be inserted in Said Sleeve Socket to ing against guard 2 of considerably greater di permanently a SSociate Said handle and cup, Said ameter than the hole 2a and its upper portion andle having a portion of greater croSS Sec 5 of less diameter than the greatest diameter of ticinal dinnensioin than the diaineter of the open shank 5, being of a gradually coned shape, and ing in Said guaid, and yielding leans disposed will be of such length as to be at all times under about Said Seeve and pressing said guard toward some compression tending to force the guard 2 Said Suction Cup, Said guard having a portion toward the cup 3, as illustrated in Fig. 3, Such adapted to extend below the lower edge of the 20 compression being considerably increased when CU) in Operation and to engage an opposed face the cup 3 is forced against a valve C as illustrated of the wave being operated upon to prevent dis in Fig. 4. placement of the cup from the said valve. Thus normally all four elements of the tool 4. A valve grinding tool consisting of a rib 50 will be permanently associated together and in der. Suction cup having an upwardly pi'esented use the guard 2 will be forced by the Spring 7 down integral Sleeve SCCket, a guard having an Open upon the upper face of the engine block A about ing sightly larger than the external diameter of the upper end of the valve C being Operated upon, Said Seeve Socket and Saaler than the lower and Will engage the abrupt radially Outer face part. Cf the cup and adapted to be threaded 55 of said valve C to prevent creeping of the Suction over the upper end of Said sleeve Socket, in con cup 3 on the upper or outer face of Said Valve C. bination. With an operating handle having a The internal diameter of the lower portion of Shank adapted to be inserted in said sleeve socket the guard or bell 2 is to be such, as illustrated, as to permanently a SSOciate Said handle and cup, to just comfortably receive the valve head C, Or Said Shank haWing a portion. Of greater CrOSS Sec 60 the upper projecting part thereof With a slight tional dimension than the diameter of the open allowance for play between the opposed faces of ing in said guard, and a helical Spring disposed said valve head C and the Said guard Or bell 2. about Said sleeve and pressing Said guard toward In the drawing all parts of the Valve grinding Said. Suction Cup, Said Spring having its lower tool, as well as the valve C and stem D, are made end bearing against Said guard of greatei diaine 65 to actual full-size scale from actual commercial ter than the opening in Said guard and its Lipper specimens of said tool and of Said valve. end of IeSS diameter than the upper end portion Having thus described our invention, What We of Said sleeve When expanded by Said Shank, and claim is: Said guard having a portion adapted to extend 1. A valve grinding tool consisting of a rub below the lower edge of the cup in operaticn and 0. ber suction cup having an upwardly presented to engage an opposed face of the valve being integral sleeve socket, a guard having an open Operated upon to prevent displacement of the ing slightly larger than the external diameter of cup from the said valve. said sleeve socket and Smaller than the lower HARRY W. KULP. part of the cup and adapted to be threaded over MARTIN C. DELLENGER. 75 i 5 G