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Publication numberUS1565223 A
Publication typeGrant
Publication dateDec 8, 1925
Filing dateFeb 10, 1919
Priority dateFeb 10, 1919
Publication numberUS 1565223 A, US 1565223A, US-A-1565223, US1565223 A, US1565223A
InventorsChurch Harold D
Original AssigneePackard Motor Car Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hydrocarbon motor
US 1565223 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Dec. 8, 1925. 1,565,223


um f

Patented Dec. s, 1925'.




Application med-February 10, 1919. Serial No, 275,973.

i "lo all 'whom t may concern:

. stem, 12 a rocker for actuating said rocker arm. This the wall 19 of the Be it known that I, HAROLD' D. CHURCH,

a citizen of the United States, and resident l of Detroit, Wayne County, State of Michigan, have invented certain new and useful Improvements in Hydrocarbon Motors, of which the following is a specification.

This invention relates to hydrocarbon motors andmore particularly to valve operating mechanisms.

One object of the invention is to provide a member intermediate the cam and the push rod for the valves which shall present a cylindrical bearing surface-along the line of contact.

Another object of the invention is to vide a pinless roller contact member.

rofor such interme 'ate Another object of the invention is to enable the ordinary push rod guide to'be utilized in retaining. the roller in position.

With these objects and others in view, the invention is embodied in preferable form in the construction and arrangement hereinafter the accompanying drawings, in which Fig.- 1 is a side view in elevation partly in vertical section, showing the invention applied to a valve of a hydrocarbon motor; Fig. 2 is an enlarged vertical detail section of the push rod lifting means;

Fig. 3 is a similar section on a plane at right angles to Fig. 2; v I

Fig. 4 is a horizontal cross section on the line 4.--4 of Fig. 2. V

Referring to the drawings 10 indicates a valve of a hydrocarbon motor, 11 a valve arm and 13 the push rod A push rod at its lower end is provided with a ball 14 freely engaging a base member 15 which bears against the lower inner face of a cylindrical roller holder 16. This 'roller holder is mounted for vertical reciprocation within a cylindricall guide 17 which is provided with flanges 18 adapted to engage crank case. The roller holder 16 terminates in ahead 20 which is `provided with an approximately semi-cylindrical opening extending therethrough and into which is adapted to be projected a roller 21 constitutlng the contact member between the'holder and 'the push rod on the one hand and the operating cam 22 on the other hand., The curved wall on described and illustrated inl cal movement the head 2(1)' extends below the horizontal diametrical plane of the roller hence the atter is prevented from downward escape therefrom. The guide member 17 is formed with two downwardly prolonged ears or lugs 23 which are adapted to fit over the spherical ends of said roller and extend below the horizontal axis of the roller whenv the guide is slid down into place, thus retaining the roller within the holden-'The spaces between the ends of the projecting parts 23 lpermit the insertion of the roller HAROLD D. CHURCH, or DETROIT, MICHIGAN, As'srGNon 'ro PACKARD Moron CAR into the socket of the holder endwise, where f upon the holder is then turned to carry the ends of the roller against the projecting ears, so that the roller will be retained against endwise escape. The radius of the spherical ends of the roller is the same as that of the guide.

The holder 16 and the guide member 17 are adapted to be maintained in proper relative position by'means of a key 24 which is adapted to be inserted into suitable slots formed in the members 16 and 17 before said parts are inserted through the opening in the crank case. These slots are inline with the end opening in the socket of the holder when the latter and the guide are assembled. This key serves to lock these parts together and following such engagement the guide is slipped down through the crank case. The roller holder 16 is slotted belowthe key sufficiently to permit a vertithereof with respect to the guide to an extent that will permit correspnding vertical reciprocation of the push ro Having thus described 4my what I claim and desire to secure Patent is 1. In a valve operating mechanism, a valve, a cam, .valve moving means between the valve and cam, a cylindrical roller having direct contact with the cam and means carried bythe valve moving means for holding the roller and 'having an open curved socket embracing more than half the circumference of the roller.

2. In a valve operating mechanism, a valve, a cam, a roller holder intermediate the cam and valve, a roller in said holder, the latter having a curved socket to seat and retain said roller and which vis open at both ends and lengthwise, and extends by Letters -around more than half the circumference of invention,

the roller, and means to retain thefroller against endwise escape.

3, In valve operating mechanism, a-cam, ai

valve rod, acontact roller between the cam 5 and rod, said roller having spherical ends and a fixed member having at its lower end a cylindrical surface adapted to fit and reta'n the roller at said ends. .v .j l In valve operating mechanism, a valve pnsh rod, a cam, a roller', a cylindrical roller holder, and a cylindrical holder gulde adapted to embrace the ends of said roller:A 5. In valve operating mechanism, a valve push rod, a a roller having spherlcal ends, aholde a'ving a transverse curved socket opening -at the lowerpart thereof, t'o receive said vroller and a cylindrical guide having its lower end formed to embrace and retain the spherical ends of the roller.

6. In valve operating mechanism, in combination, a4 cam, a roller holder having a partly cylindrical opening,` an elongated cylindrical roller in said opening having circumferential contact with both the cam and the interior opening, and means notv movable with the holder for retaining the roller against endwise movement in the opening. i

7. In valve operating mechanism, a push rod for a valve, a cam, a roller having spherical ends, a cylindrical holder having an open curved lower end to receive said roller, a guide to which said holder is keyed having end'members adapted to embrace said spherical ends of the roller to retain the same rin the holder.

'.,SqInY a valve operating mechanism, a valve,`a cam, a roller holder, means between 'the holder andvalve. for actuating the latter, extended more than half the circumference of the roller to retain same, a fixed guide for Vthe holder, means to limit the reciprov catory movement of the holder with respect to the guide, -said guide having at one end `opposite proJecting parts extending over the `ends of the roller and having recesses between said parts to permit the insertion of the roller in the holder.

9.?In1valve operating mechanism, a valve, a.- ca`m, afcyli'ndrical cam contacting roller,

a roller in said holder, the latter being a roller Iholder'having an open curved Iseat for retaining the roller, a guide having projecting means for lapping the ends of the roller and slotted to permit the insertion and withdrawal of the roller past said means, a key for locking the holder in the guide against rotatable movement and said holder' being slotted longitudinally in line iviththe end of the socket and beyond the length of the key to receive the latter and permit reciprocatory movement of the holder.

10. In`valve operating mechanism, a reciprocatory valve operating roller holder, a hollow cylindrical guide in which such holder is movable and a roller mounted in the holder and having ends curved on the same radius as that of theguide wall and fitting against said wall.

In testimony whereof I aix my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2891525 *Aug 1, 1955Jun 23, 1959Thompson Ramo Wooldridge IncTappet barrel
US3025841 *Oct 17, 1960Mar 20, 1962Caterpillar Tractor CoCam follower and spacer for engine valves
US4335685 *Oct 19, 1979Jun 22, 1982Caterpillar Tractor Co.Lifter assembly
US4406257 *Jun 18, 1981Sep 27, 1983Caterpillar Tractor Co.Cam roller follower
US4708102 *Sep 8, 1986Nov 24, 1987Navistar International Transportation Corp.Roller cam follower with positive lubrication
US4909197 *Aug 16, 1989Mar 20, 1990Cummins Engine Company, Inc.Cam follower assembly with pinless roller
US5186130 *May 22, 1991Feb 16, 1993Melchior Jean FCamshaft control device
US5566652 *Oct 6, 1995Oct 22, 1996Eaton CorporationLight weight cam follower
US5673661 *Nov 27, 1995Oct 7, 1997Jesel; Daniel HenryValve lifter
US5746167 *Apr 11, 1997May 5, 1998Jesel; Daniel H.Valve lifter
US5864948 *Jan 22, 1998Feb 2, 1999Jesel; Daniel HenryMethod for increasing available space for an intake/exhaust port in an internal combustion engine
US5921209 *Aug 29, 1997Jul 13, 1999Chrysler CorporationRoller arrangement for valve train mechanism
US6871622Oct 18, 2002Mar 29, 2005Maclean-Fogg CompanyLeakdown plunger
US7128034Oct 18, 2002Oct 31, 2006Maclean-Fogg CompanyValve lifter body
US7191745Oct 18, 2002Mar 20, 2007Maclean-Fogg CompanyValve operating assembly
US7273026Oct 18, 2002Sep 25, 2007Maclean-Fogg CompanyRoller follower body
US7281329Feb 2, 2004Oct 16, 2007Maclean-Fogg CompanyMethod for fabricating a roller follower assembly
US7284520Mar 8, 2007Oct 23, 2007Maclean-Fogg CompanyValve lifter body and method of manufacture
DE19641791B4 *Oct 10, 1996Jun 2, 2005Volkswagen AgRollenantrieb, insbesondere für Brennstoffeinspritzpumpen
EP0074458A2 *Feb 19, 1982Mar 23, 1983J. Wizemann GmbH & Co.Roller tappet
EP0413237A1 *Aug 7, 1990Feb 20, 1991Cummins Engine Company, Inc.Cam follower assembly with pinless roller
EP0460988A1 *May 21, 1991Dec 11, 1991Jean Frédéric MelchiorDrive mechanism having a camshaft and force transmission means with roller
U.S. Classification123/90.5
International ClassificationF01L1/14
Cooperative ClassificationF01L1/14
European ClassificationF01L1/14