US1570224A - Valve-spring lifter - Google Patents

Description

Jan. 19 1926. Y 1,570,224

L. H. BAYLER VALVE SPRING LIFTER Filed Jan. 23, 1925 rllll/lll/l vproved valve spring lifter;

Patented Jan. 19,- 1926.

LOUIS H. BAYLER, OF LOS ANGELES, CALIFORNIA.

VALVE-SPRING LIFTER.

Application filed J'anuarye23, 1925. Serial No. 4,225.

To all whom it may concern.'

Be it known that I, Louis II. BAYLER, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Valve-Spring Lifters, of which the following is a specification.

This invention relates to improvements in valve spring lifters, and is especially an improvement over the valve spring lifter disclosed. in my prior Patent No. 1,445,609, issued February 13, 1923.

An object of this invention is to increase the usefulness of the tool in such a manner that the tool may be applied to a large number of different types of engines for lifting the valve springs of these engines.

It is a further object of the invention to provide a valve spring lifter which may be more easily and more quickly applied to an engine to lift the valve spring and which may be more easily withdrawn.

Other improvements and modifications r and other objects will be made manifest in the following detailed description and specifically pointed out in the appended claims, reference being had, to the accompanying drawings for a disclosure of the improved valve spring lifter, wherein:

Figure 1 is a side elevationof the im- Fig. 2 is an end elevation of the valve spring lifter shown in Fig. 1;

Fig. 3 is avertical section through the valve spring lifter taken substantiallyv on the line 3 3 of Fig. 1;

Fig. 4 is an enlarged section illustrating a detail of construction;

'Fig 5 is a horizontal section illustrating one manner in which the spring engaging means may be attached to the yoke of the valve spring lifter;

Fig. 6 is a horizontal section illustrating another manner in which the spring engaging means may be attached to the yoke;

Fig. 7 is a side elevation of the device disclosed in Fig. 6;

Fig. 8 is a horizontal section illustrating a third manner in which the spring engaging means may he attached to the yoke of the lifter;

. edges 12 Fig. 9 is a side elevation of the device:

disclosed in Fig. 8; f

Fig. 10 is a view taken substantially on the line 10-10 of Fig. 7;

Fig. 11 is a view taken substantially on' the line 11-11 of Fig. 9; and

Fig. 12 is a top plan view of a modified form of spring engaging means.

Referring to the accompanying wherein similar reference characters desig-y nate similar parts throughout, the improved valve spring lifter consists of a yoke 10, somewhat U-shaped in form, and in cross section having the appearance similar to an eyebar. Upon the lower end of the yoke 10 there is detachably secured a spring engaging means, generally designated at 11. This spring engaging means is in the form of a fork having upturned side and back and 13 respectively. y adapted to be placed about the valve stem V of a valve V beneath the valve spring S, and the complete lifter is adapted to compress the spring S lifting the washer IV so as to permit withdrawal of the pin or key P from the valve stem V. y

In Figs. 5 to 11 inclusive I have disclosed various means by which the fork or spring engaging means may be detachabiy secured to the yoke 10. In the preferred form of construction, the fork has rearwardly eX- tending fingers 14 and 15, which are adapted to slide upon the opposite sides of a web 16 of the yoke 10. rIhe top and bottom portions of the eyebar forming the yoke 10 pre vent movement of the fingers 14 and 15 other than sliding upon the web 16. In the device shown in Fig. 5, I provide a thumb screw 17 which is adapted to bey passed through the fingers 14 and 15 and through the web 16 so as to secure yoke 10. In the device disclosed in Figs. 6 and 7, the fingers 14 and 15 are provided with pins 18; and tatable upon the yoke 10 but which is held thereon by a flange 20, is provided with an angular slot 21 adapted to receive the pins 18, and thus provide a bayonet joint for maintaining the fork upon the yoke. In the device disclosed in 22 having a flange groove 24 in the yoke The fork .is

. drawings y the fork to the a ferrule 19, which is ro-v Figs. 8 and 9, a ferrule y 23 disposed within a, 10 is internally threaded and adapted to screw upon the threaded ngers 14 and l5 upon the yoke. In this manner, the fork which engages and compresses the spring is detachably secured to the yoke and various sized forks may be employed, depending upon the size of the washer and of the valve spring upon the various internal combustion engines, upon which the device may be applied.

Upon the upper end of the yoke l there is formed a sleeve 25, in which is slidablc a spindle 26. LThe spindle 26 is threaded with threads which are not V threads, as clearly shown in F ig. 4, but have their upper sides substantially horizontal. In this manner the .spindle 26, while being a threaded spindle,

. cured together at their outer is also a toothed spindle, having helical teeth formed thereon for a purpose hereinafter to be described. rlhe spindle 26 is slidable within the sleeve 25 and carries upon its upper end a crank 27. Upon the lower end of the spindle 26 there is an engaging mehr ber 28 which is held upon the spindle means of a ball and socket joint 29. About the spindle 26 above the engaging member 26 there is disposed a coil bumper spring 30, and a coil spring 3l is disposed about the spindle above the sleeve 25, and is adapted to be compressed by the sleeve 25 and the crank 27 when the spindle is forced downwardly with respect to the yoke l0.

An aperture 32 is provided in the sleeve 25 and a vpawl 33 is pivoted upon the sleeve 25, which is adapted to extend through the aperture 32 and engage upon the spindle 26 so'as to prevent upward movement of the spindle 26 with respect to the yoke. rThe pawl 33 carries a lever 34 which is urged outwardly by a coil spring 35 so as to resiliently maintain the pawl 33 in engage 'ment with the spindle 26. Below the sleeve 25 a collar 36 is slidable upon the spindle 26. The collar 36 carries a pawl 37 engageable upon the spindle 26, which pawl is shown as pivoted at 33 and is provided with an upwardly extending portion 39 engaged by a spring 40 which urges the pawl 37 into engagen'ient with the spindle 26. rl`his pawl, like the pawl 33, when engaging` with the spindle, prevents the upward movement of the spindle with respect to the yoke 16. Upon the sides of the collar 36 there are formed trunnions Lll which pivotally secure the members 4t2 and i3 lof a lever, generally designated at4 del, to the collar 36. The members 42 and 43 forming the lever lll are seends t-o provide a handle 4:5. Extending between the members l2 and 43 there is a pin 46 upon which is rotatably mounted. a roller 4:7. v`A slot 413 is provided in the yoke l0 and the roller 4i' is adapted to roll in the slot. ln this manner a traveling fulcrum is provided for the lever 44. The yoke l0 and the sleeve 25 have nrovided thereon a linger At9 which extnlzz,

downwardly and is adapted to engage with the portion 39 of the pawl 37 when the collar 36 is in its uppermost position, so as to disengage the pawl from the spindle.

The operation of the device is as follows: ln applying the lifter to an internal combustion engine, the fork ll is placed beneath the washer W, as shown in Fig. l. The spindle 26 may then be forced downwardly with respect to the yoke 10 so as to engage upon the top of the valve V or upon any other part of the internal combustion engine. The movement of the spindle 26 is not retarded by the pawls 33 or 37, as these pawls when engaging upon the spindle only prevent its upward movement. lVhen the engaging member 2S is engaging a part upon the top of the internal combustion engine, the lever lll is reciprocating up and down, causing' a reciproca-tion of the collar 36 upon the spindle 26. Upon the downward movement of the collar 36, the pawl 3T is in engagcinent with the teeth or the threads pro` vided upon the spindle, and causes 'the spin` dle 26 to move downwardly with respect to the yoke lO, thereby raising the fork ll and con'ipressing the spring S. As the spindle 26 moves downwardly with respect to 'the yoke l0, it merely slides beneath rthe pawl 33. Upon the upward movement of the collar 36, the pawl 37 merely slides over the 'teeth upon the spindle and the pawl 33 maintains the spindle in the position into which it was brought upon the down stroke of the collar 36. After the collar 36 is brought upwardly. it may bc again forced downwardly, thereby forcing the spindle 26 downwardly with respect to the yoke l() and additionally compressing the spring S. .Vhen the spring S has been sulliciently compressed, the pin P may be removed from the valve stem V. lt will be noted that as the spindle 26 is forced downwardly with respect to the yoke l0, the coil spring 3l will be compressed. After the pin P has been removed, the collar 36 is moved into its iuipeimost position whereby the upper portion 39 of the Vpawl 37 engages with the linger 4-'9 so as to disengage the pawl. from the spindle. Upon removing the valve spring lifter from the internal combustion engine, the lever 3st is ed inwardly so as to disengage the pawl 33 from the spindle 26. As the pawl 37 has been disengaged by thrusting the collar 36 into its uppermost position, the spindle 26 becomes slidable in the sleeve 25 and can be lifted therethrough by the coil spring 3l. lfsually, the coil spring 3l throws the spindle upwardly through the sleeve with a considerable velocity, and to prevent the engaging member 28 from striking the collar 36. the bumper spring 30 is employed. The crank 2? Yby being rotated causes the spindle 26 to act as a jack screw and provides a line adjustment for the spindle, which would not otherwise be provided by the collar 36 and the pawl 37. The engaging member 28 has a universal joint connection with the spindle 26 and can readily accommodate itself to various surfaces against which it may be placed.

From the above it is seen that an improved valve spring lifter is provided, having a number of improvements over my prior device, that I now employ a reciprocating lever for thrusting the spindle downwardly, and that the movement of the spindle is not limited by the throw of the lever.

In the device disclosed in Fig. 12, I have provided an attachment which may be employed for lifting two valve springs simultaneously. This device has lingers 14 and 15 which are mounted upon a cross bar 50. Forks 51 and 52 are detachably secured to the cross bar 50 by wing nuts 53. The lingers 14 and 15 may have apertures therein to receive the thumb screw 17, or may be provided with pins, similar to the pins 18, or may be threaded as the lingers are threaded as shown in Fig. 8.

It will be noted that the crank 27 provides a head upon the spindle 26, which can be struck by a hammer, and such striking frequently loosens the pin or key P when the key becomes stuck, especially when the key or pin is formed of two or more parts as in some types of internal combustion engines.

It will be understood that various changes in the detail of construction may be made without departing from the spirit or scope of the invention as delined by the appended claims.

I claim:

1. A valve spring lifter comprising a yoke, means carried by said yoke adapted to engage and lift a valve spring, a sleeve carried by said yoke, a threaded spindle slidable in said sleeve, a spring actuated pawl engageable upon said spindle for preventing upward movement of saidspindle with respect to said yoke, means for rotating said spindle, and means for disengaging said pawl from said spindle.

2. A valve spring lifter comprising a yoke, means carried by said yoke adapted to engage and lift a valve spring, a sleeve carried by said yoke, a threaded spindle slidable in said sleeve, a pawl engageable upon said spindle for preventing its upward movement with respect to said yoke, a collar slidable upon said spindle, a pawl carried by said collar engageable upon said spindle, means for reciprocating said collar upon said spindle so as to force said spindledownwardly with respect to said yoke, and means engageable upon said pawl upon said collar for disengaging it from said spindle when said collar is in its uppermost position.

3. A valve spring lifter comprising a yoke, means carried by said yoke adapted to engage and litt a valve spring, a sleeve carriedl by said yoke, a toothed spindle slidable in said sleeve, a lever having a fulcrum movable upon the yoke, a collar disposed about the spindle carried by said lever, and pawls pivoted upon said collar and sleeve engageable upon said spindle whereby the spindle may be forced downwardly by said lever, collar and pawl carried thereby and held in such position by the pawl on said sleeve.

4. A valve spring lifter comprising a yoke, means carried by the yoke adapted to engage and lift a valve spring, a sleeve carried by the yoke, a toothed spindle slidable in the sleeve, a lever, a roller carried by they lever adapted to roll upon said yoke, a collar slidable upon said spindle pivoted to the lever, and pawls mounted on said collar and sleeve engageable uponA the spindle, whereby the lever may cause the spindle to move downwardly with respect to the yoke and the spindle may be held in such position by the pawl on said sleeve.

5. A valve spring lifter comprising a yoke, means carried by the yoke adapted to engage and lift a valve spring, a sleeve carried by the yoke, a toothed spindle slidable in the sleeve, a lever, a roller carried by the lever adapted to roll upon said yoke, a collar slidable upon said spindle pivoted to the lever, pawls mounted on said collar and sleeve engageable upon the spindle, a head upon the upper end of the spindle, and a coil spring disposed about the spindle between the head and the sleeve, the lever being so arranged that it may cause the yoke to move upwardly relatively to the spindle in which position it may be held by the pawl on said sleeve.

6. A valve spring lifter comprising a yoke, means carried by the yoke adapted to engage and lift a valve spring, a sleeve carried by the yoke, a toothed spindle slidable therein, a pawl pivoted on the sleeve engageable on the spindle, a lever having a fulcrum movable on the yoke, a collar pivoted to said lever, and a pawl pivoted to the collar engageable on the spindle, whereby the lever may be oscillated to cause the collar and pawl thereon to move the spindle downwardly with respect to said yoke, the first mentioned pawl serving to prevent upward movement of the spindle relatively to the yoke while the collar is being moved upwardly thereon.

7. A valve spring lifter comprising a yoke, means carried by the yoke adapted to engage and lift a valve spring, a sleeve carried by the yoke, a threaded spindle slidable therein. a pawl pivoted on the sleeve engageable on the spindle, a lever having a ulcrum movable on the yoke, a collar pivoted to said lever, a pawl pivot-ed to the eollarengageable on the spindle whereby the lever may be osellated to cause the collar and Apavvl thereon to move the Spindle downwardly with respect to said yoke, the rst mentioned pmvl servingv to Aprevent"j upward movement o the spindle relatively to the yoke, While the collar is being moved up- Wardly thereon, there bei-ng a. era-nk mounted on top of the spindle, and a coil spring disposed between said sleeve and eran/k as and for the purpose described. Y

In testimony whereof I have signed my name to this speecaton. Y

LOUIS H. BAYLER.

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