US1871498A - Valve lifter - Google Patents

Description

2 Sheets-Sheet 1 l. J. CLARK VALVE LIFTER Filed Nov. 14, 1951 Aug. 16

16, 2 v I. J. CLARK ,498

VALVE LIFTER Filed Nov. 14, 1931 2 Sheets-Sheet 2 gmvmtoa lc tglaria IV v Y Patented Aug.

PATENT oFF ICE- 1 f i IRA J. CLARK, OF FORT MORGAN, COLORADO VALVE LIFTER Application filed November 14, 1931'. Serial Nat-75,121.

This invention relates to valve lifters of the C-type and including upper and lower members connected for adjustment toward and away from each other, means carried by the upper member for engagement with the head of a valve, means carried by the lower member for engagement with the spring seat of the valve, and means by which the members may be adjusted toward each other to compress the spring of the valve and thus permit the removal of the pin or' key by which the spring seat is supported'on the stem of the valve.

The invention has for one of its objects to provide a valve lifter of the character stated.

wherein the valve head engaging means will embody a push bar secured to and extending downwardly from the upper member, a foot piece and pin carried by the push bar for relative upward and downward movement, the pin having a pointed lower end located centrally of and normally extending below the foot piece, and a spring carried by the push bar and acting to normally hold the pin with its lower end below the foot piece, the pin being adaptedto engage the head of a valve during the application of the lifter to center the foot piece on the valve head and hold it against accidental displacement therefrom during and after the adjustment of the lifter to compress the spring of the valve, and the foot piece being adapted during the adjustment of the lifter to move downwardly with respect to the pin into engagement with the valve head.

The invention has for a further object to provide a valve lifter of the character stat-ed wherein the foot piece and centering pin shall be adapted for engagement with valve heads having fiat, concave or convex upper sides.

The invention has for a further object'to provide a valve lifter of the character stated wherein the push rod will be hollow to adapt it to slidably receive the centering pin, wherein the foot piece will have a fixed position on the push rod, wherein the relative movements of the centering pin and foot piece will be limited, and wherein the spring forholding the centering pin in normal position with respect to the foot within the push rod.

The invention has for a further object to provide a valve lifter of the character stated wherein the spring seat engaging means will embody a pair of relatively spaced jaws which while strong enough to lift any valve spring will be of such slim and trim formation as to adapt them to be readily engaged H with the spring seat of a valve and to provide the maximum room to remove and replace the spring seat lock or key.

The invention has for a further object to piece will i be mounted provide a valve lifter of the character stated wherein the spring seat engaging aws' will be of channel formation and arranged with their open sides .in opposed relation and wherein the lower flanges and the webs of the jaws will be extended forwardly beyond the upper flanges to provide horizontal and vertical spring seat engaging members, the channel formation of the jaws and the formation of the spring seat engaging members integrally with the lower flanges and webs render= ing the jaws strong enough to enable them to I be formed trim and slim. r The invention has for a further object to provide a valve lifter of the character stated which will embody a frame having a hori-' zontal' arm and a vertical arm extending downwardly from one end of the horizontal arm and of arcuate formation in side elevation, valve'head engaging means carriedby' the other end of the horizontal arm, a lever located below the horizontal arm and pivoted at one end to the lower end'of the vertical arm, spring seat engaging means carried by the free end of the lever, a curved arm extending upwardly from the pivotedend of the lever, a'h'and lever pivoted to the horizontal arm, and a curved link connected to the hand lever and to the-upper end of the lever arm, the hand lever, link and lever, arm providing means by which-the valve seat engaging lever may be swung upwardly to compress the valve spring, and the hand lever, link and lever, arm occupying such relative positions after the compression of the spring that they will hold the valve seat engaging lever againstaccidental downward movement.

The invention has for a further object to provide a valve lifter of the character stated which will embody a ratchet loop surrounding the vertical arm and the lever arin,

normally occupying a position which will permit the spring seat engaging lever to be rocked, and adapted to be moved into a position which will hold the lever'against. accidental rocking movement before the hand lever, link and the lever arm are in operation to hold the valve spring seat engaging' lever against movement.

The invention is hereinafter fully described and claimed, and illustrated in the accompanying drawings, wherein:.

Figure 1 isa view partly in vertical section and partly in elevation illustrating the appli! cation of the valve lifter ready. for. actuation to compress the valve spring;

s Figure 5 is a sectional view taken onthe. vertical plane indicated bythe line 5*.5; of.

Figure 4, and

Figure 6- is a sectional view taken on the horizontal planes indicated by the. line.

p of Figure 1 The valve lifter comprises a frame. 1 con-- sisting of a horizontal arm 2rand a vertical,

arm3. The arm-2 is providedat its'front end with valve head engaging meansll the? arm 3; extends downwardly from, the rear end of the;

arm 2. The arm 2 is preferably straight,and; the arm 3 is longitudinally curvedandhas its lowerend position directly below therea-n endof the arm-2.. Theframelis made trom two flat bars arranged in, opposed relationiand;

connected together by rivets5,and 6, Those;

portions of the bars constituting thearm, 2; are; designated 2a, and those portions of the barsconstituting the arm 3are designatedBa, The. arm. portions 211 are laterally offset, near their front ends to provide acylindrical.

socket? which-extendsvertically throughthearm 2 and which is provided for thereceptionl of a push; rod 8 constituting a part i of the wvalvehead, engaging means-4t. Bolts 9 provided withthumb nuts 10 extend through the armportions2a at opposite sidesofsthesook et.7-, andprovide means by'which thesections of the socket maybe moved toward each; other, tor freed for movement away from each other.

The. movement of the sectionsof the socket:

7 in-the directionof each contracts-thesocks et, and the movement of the. sections-,,of; the;

socket. away from each. other; expand he; socket. When the sooket 7 is-expanded' ho;

tween these portions.

push rod 8 may be adjusted upwardly and downwardly on the arm 2, and when the socket is contracted the push rod is held against accidental movementfrom its adjusted position.

A lever 11 located below the arm 2, is pivotally connected at its rear end by the rivet 5-to thelower end of the arm 3, and is provided at its front or free end with spring seat engaging means 12. The pivoted end of the lever-l1 is located between the arm portions 3a, and curving upwardly from its pivoted end is an arm 13 which is also located be- I The lever 11 and its arm'BarealSO-madetmm two fiat bars, those portions of the bars constitutingthe lever being, designated 11a, and" those portions of the bars, constituting the lever arm being. designated 13a. Washers 14' aremounted upon the rivet, 5, at one end of the lever portions 11a, and serve tohold' these portions in relatively spacedrelation. I g

A hand lever 15ispivotally connected at one end tothe rearend ofithe. arm 2 by the rivet 6, an'dinormally extends upwardly and rearwardly. from, its pivot. The hand lever, 15 is made of two flat bars designatedl5a connected together near their free ends by rivets 1.6 and 17, and heldin spaced relation: by

washers; 18 mounted on these rivets .andithe rivet 6. Acurved link 19'locatedbetween the armportions 3a., is pivotally connected, as at 20, to andbetween theupper ends. of the arm portions 13a and is pivotally: connected, .asat 21,.to. and between the lever. portions 15a at points, close to, the pivot 6" of the. lever.

Thepush bar. 8.is.of hollowformation, and

is provided at. itslower end with -a foot piece 22 of hollow spherical formationand extend;- ing in. all directions laterallybeyondthepush bar. A pin 23} having ai-pointedlower end 24 located at the center of the foot piece 22,. is slidably mountedrin the push. bar 8 to.

permitthe pin to move downwardly and upwardly with. respect tothe foot piece. The upward and downward movement of the pin:

23 is limitedbya pin 25' carried byand extending'diamet'rically across the push bar8. and'also extending through a vertical slot26' in the pin 23. The pin 23 normally occupies r a position with its lower end extending be low the foot piece22, and'itisyieldingly held in this position by'a spring 27 mounted in. the push bar 8*between the upper end of the pin and apin 28 l fixed to and extending diametrically acrossthepush bar 8;

The spring seat engaging means 12 comprises'j'aws 29 secured to the front ends ofthe ever 11. The jaws 29 are of channel formation and are arranged with theiropen sidesin opposed: relation: The jaws29 comprise" shanks 29a which receive-and.- are secured," as" at 30, to thefront ends or the'lever portions 11a- Shanks 29a curveiupwardly andibr wardlyrand-xgradually decrease in width or iii) vertical dimension from their rear to their front ends. The jaws 29 also'comprise spring seat engaging members 29?) which extend forwardly from the upper ends of the shanks 29a, and flanges 29c which'extend upwardly from the outer edges of the spring seat engaging members. The spring seat engaging members 295 and their flanges 290 form continuations of the lower flanges and the webs .of the shanks 29a respectively, and are offset laterally outward with respect to the. The upper flanges of the shanks shanks. 29a terminate at the rear ends of the flanges 290. As the shanks 29a are ofchanned formation, and as the spring seat engaging memhere 25?) and their flanges 290 are formed integrally with the shanks, the jaws while slim and trim are so strong as not to yield under the pressure necessary to compress the strongest valve spring. The lever portions 11a hold the jaws 29 in relatively spaced relation ready for application to the spring seat. The distance between the jaws may be varied so as to adapt them for application to spring seats of diflerent sizes through the medium of a bolt 31 passing through the lever portions 11a and the jaw shanks 29a, the head of the bolt contacting with the outer side of one of the shanks, and a nut 32 on the bolt contacting with the outer side of the other shank.

In practice, to adapt the valve lifter for application to a valve, the handI eve-r 15 is actuated to swing the lever 11 into its lowest adjusted position with respect to the arm 2 if the lever 11 is not already in such position. The pin 23 extends below the foot piec 22, and during the initial phase of the application of the valve lifter the pointed lower end of the pin is engaged with the valve head 33, and during the next final phase of the application of the valve lifter the jaws 29 are engaged with the seat 34 of the valve spring 35. The pin 23 centers the foot piece 22 on the valve head 33, and the jaw members 29?) and 290 contact with the lower side and edge, respectively, of the valve spring seat 34. The hand lever 15 now occupies an upwardly and rearwardly inclined position, as shown in Figure 1, and it is swung from this position into a downwardly and rearwardly inclined position, as shown in Figure 2. During this actuation thereof, the hand lever 15 moves between the arm members 3a, the link 19 moves between the lever members 15a, and the free end of the lever 11 moves upwardly. During the consequent upward movement of the jaws 29, the foot piece 22 moves downwardly with relation to the pin'23 into contact with the valve head 33. After the foot piece 22 contacts with the valve head 33 the jaws compress the spring 35. During this actuation of the hand lever 15, the link pivot 21 passes from a point above to a point below the lever pivot 6, and the downwardly actingforce applied to the lever-11 by the compressedspring 35 acts through the arm 13 and link 19 against the hand lever 15 in a direction which tends to move this lever downwardly. Due thereto, and'as the downward movement of the hand lever 15 is limitedby the rivet 16 contacting with the rear edge of the link 19, the lever 11 is positively held against accidental downward movement. 4

The foot piece 22 and the jaws 29 are thus held in their adjusted and spring compressing position. All possibility of the foot piece" 22 becoming accidentally displaced from the valve head 33 is prevented by the engagement of the pin 23 with the valve head. There is no possibility of the valve lifter becoming accidentally displaced either while it is being applied or after its application and actuation to effect the compression of the spring. A loop 36 surrounding the vertical arm 3 and the lever arm 13 normally occupies a position close to the pivot 5 of the lever 11, as shown in Figure 1. In this position thereof, the loop 36 will not interfere with the actuation of the lever 11. When conditions are such that the hand lever 15 cannot be swung into its lowest or looking position, the lever 11 is held against downward movement from its adjusted position by the loop 36 which to accomplish this is moved upwardly from its normal position into embracing relation with their arms 3 and 13, as shown in Figure 2. The jaws 29 are slim and trim, may be easily engaged with the spring seat 34, and will when the spring 35 is under compression provide the greatest possible room for the application or removal of the pin or key employed to support the spring seat on-the valve stem. The channel formation of the jaws 29 permits them to be made slim and trim and yet strong enough to compress the strongest valve spring. To release the valve lifter for removal from the valve it-is only necessary to swing the hand lever 15 upwardly and forwardly.

While I have described the principle of the invention, together with the structure which I now considerthe preferred embodiment thereof, it is to be understood that the structure shown is merely illustrative and that such changes may be made, when desired, as fall within the scope of the invention as claimed.

I claim 1. In a valve lifter, a frame having a horizontal arm and a vertical arm extending downwardly from one end of the horizontal arm, valve head engaging means carried by the other end of the horizontal arm, a lever located below the horizontal arm and pivoted'at'one end to the vertical arm, spring seat engaging means carried by the free end of the lever, an arm extending upwardly fromthe pivoted end of'the lever, a hand 'zontal arm and a vertical arm extending.

downwardly from one end of the horizontalarm, valve head engaging means carried by the-other end of the horizontal arm, a lever located below the horizontal arm and pivoted' at one end to the verticalarm, spring seat engaging means carried by thefree end of the lever, an arm extending upwardly from the pivoted end ofthe lever, a hand lever pivoted at one end to the horizontal arm, a link pivoted to thenpper end of the lever arm and to the hand lever at a point close tothe pivot of such lever, and a loop embracing the vertical ,arm and the lever arm and movable thereon into a position to hold the lever against movement and into a position to free the lever for movement. I

In a valve lifter, a frame having a horizontal arm and a vertical arm extending downwardly from the rear end of thechor'izontal arm, the vertical arm being curved and having its lower end located below said end of the horizontal arm, valve head engaging means carried by the front end of.

the horizontal arm, a lever located below the horizontal arm and pivoted at its rear end to the lower end of the vertical arm, spring seat engaging means carried by the front end of the lever, an armcurving upwardly from the rear end of the lever, a hand lever pivoted at one end to the rear end of the horizontal arm and normally o'ccupying an upwardly and rearwardly extended position on such arm, and a curved link pivoted to the upper end of the lever arm and to the hand lever at a point above and rearwardly of the pivot of such lever,

the-lever being adapted to be swung down- -seat engaging means carried by the front wardly to swing the lever upwardly and aaaclapted tooccupy a downwardly and rearwardly extended position with relation to the horizontal arm with the pivot of the link below its pivot to hold the lever in its up w'ardly adjusted position. I

7 l. In a valve lifter, a frame having a horizontal arm and a vertical arm extending downwardly from the rear end of the hori; zontal arm, the vertical arm being curved and having its lower end located below said .end of the horizontal arm, valve head engaging means carried by the front end of the horizontal arm, a lever located below the horizontal arm and pivoted at its rear end to the lower end of the vertical arm, spring end of the lever, an arm curving upwardly from the rear end of the lever, a hand lever pivoted at one end to the rear end of thehorizontal arm and normally occupying an upwardly and rearwardlyv extended position on such arm, a curved link pivoted to the upper end of the-lever arm and to the hand lever at a point above and rearwardly of the pivot of such lever, the'lever being adapted to be swung downwardly to swing'the lever upwardly and adapted' to occupy a downwardly and rearwardly extended position with relation-to'the horizontal arm with the pivot of the link' below its pivot to hold the lever in its upwardly adjusted position, and a loop embracing the vertical arm and the lever arm and movable thereon into a position to hold the lever against movement and into a position to free the lever for movement;

In testimony whereof I hereunto aflix my

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