US2619717A

US2619717A - Valve sleeve tool

Info

Publication number: US2619717A
Application number: US184413A
Authority: US
Inventors: Alvin C Gober
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-09-12
Filing date: 1950-09-12
Publication date: 1952-12-02
Anticipated expiration: 1969-12-02

Description

Dec. 2, 1952 A. C. GOBER VALVE SLEEVE Toor.

Filed Sept. l2. 1950 INVEN TOR. B/l V12? C'. G06 er HIJ' M/VT y :the associated parts.

Patented Dec. 2, 1952 UNITED sTATEs PATENT OFFICE VALVE SLEEVE TOOL Alvin C. Guber, Wichita Falls, Tex. Application September 12, 1950, Serial No. 184,413

2 Claims.

through the valve into a chamber to force a piston sleeve upward into contact relation with the valve or valve push rods. In so doing the clearance between the tappet and the valve or valve push rod becomes zero, eliminating the usual noises present when a valve tappet is a spaced distance from lthe end of the valve or valve push rod. Due to foreign matter, gum in the oil, and to heat, the sleeve piston frequently sticks and does not permit the oil to maintain the push rod or tappet in contact with the end of the valve, which necessitates the removal of the valve tappet member -to free the sleeve piston therein so that it can function properly.

Heretofore, the removal of the sleeve piston resulted in damage thereto and -to the -associated parts, which frequently meant that the parts had to be discarded `and replaced which is expensive,

time consuming and inconvenient.

The present invention provides a tool vthat readily and efficiently removes the piston sleeve from the valve tappet without damage thereto or to the associated parts, and makes the piston sleeve or other parts accessible for cleaning and repair.

An object of this invention is to provide 1a tool that will readily and effectively remove the hydraulically actuated piston sleeve from the v-alve tappet member when such sleeve piston has become stuck.

Another object of .this invention is to provide a piston sleeve removing tool for hydraulic valve tappets that is simple in construction, eflicient `and self contained, and which has a guide to cause engagement of the tool with ythe piston sleeve.

Still another object of the invention is to provide a uniform, compact tool that has a selfcentering arrangement so as to hold the Valve tappet in aligned centered relation while the piston sleeve is being removed, thereby eliminating danger of damage 'to the piston sleeve or to With these objects in view, and others'that will manifest themselves as the description proceeds, reference is to be had to the accompanying drawings, in which:

Fig. l is a side elevational view `of the device embodying the invention; Y

Fig. 2 is -a longitudinal sectional view through the tool and valve tappet assembly, with parts shown in elevation and with parts broken away and shortened to illustrate the details of construction; e

EEig. 3 is an enlarged fragmentary` view, partly in elevation and partly in section of the lower end of the tool and showing the latch mechanism;

Fig. 4 is a perspective view of an expanding lock ring that holds parts of the tool together during normal operation;

Fig. 5 is a plan view of the tool; and

Fig. 6 is -a sectional view taken on the line 6-6 of Fig. 3, looking in the direction indicated by the arrows.

With more detailed reference to the invention as illustrated in the annexed drawing, the numeral I designates a threaded body of the tool, which has an outwardly extending handle 2. The body I has a threaded axial opening 3 in which a threaded stem interengages. The threaded stem Il has a nut 5 threadably eng-aging the stem and is locked in place by -a set screw 6.'

The opposite end of the stern, as indicated :at I, is preferably left unthreaded for a spaced distance and is shouldered at 8, as will best be seen in Figs. 2 land 3. The lower end of the stem, as shown in Figs. 1, 2, 3 and 6 is tapered at 9 which insures the ready insertion of the tool into the piston sleeve I0 which is to be removed. The threaded stem li h-as a spring latch mechanism II the end of which is beveled at I2. The opposite end of the latch preferably forms a head I3 which is of elongated shape so as to insure the bevel portion I2 of the latch being maintained in the relation as shown in Figs. 1, 2 and 3. A spring I4 is provided within a recess I5 in y the lower end of the stem 4, which spring is retained in place by .a plug I6.

The spring Ill may be of elongated shape, such as oval ork the like, so as to fit into the recess I 5 to urge the latch I I outward.

The body I has a recess VI'I in the lower side, which recess has an annular groove I8 therearound. The inner end` of the recess I1 terminates in a squared shoulder I9. A sleeve 2G is secured to the body I by means of a snap ring 2I which is depressed into peripherial groove 22 in sleeve 2i) so that upon sliding the sleeve 2i) into recess I'I, the snap ring 2I will expand outwardly to engage annular grove I8 and since the snap ring 2| is of suflcient width to abridge the recess between the periphery of the sleeve 20 and the inner diameter of said recess, thus the two members will be secured together. The sleeve 20 and the body I are interengaged to permit relative movement therebetween which will enable the body I and handle 2 to be rotated while maintaining the stem 4, tappet T and sleeve 20 against rotation.

The tappet T has a peripherial groove 23 therearound, which groove registers with an oil passage (not shown) in the engine, which permits the oil to circulate around the peripherial groove 23 and to pass into the sleeve through hole 24 formed in the valley of the groove. The voil then passes into a peripherial groove 25 formed around the outer periphery of piston sleeve I and through a hole 216 into .the interior of the piston sleeve and by a valve 21 in the `lower end of the piston sleeve into a chamber therebelow, to cause the piston sleeve to raise upward against a lock ring which may be positioned in annulargroove 28 which normally restrains the piston sleeve I0 from upward movement beyond this ring. The hole 26 in piston `sleeve I0 vis a predetermined distance from the upper face thereof. The tool's latch member I'I is so spaced from shoulder 8 that, upon seating of shoulder 8 on the upper face of the piston sleeve I0, .the latch will be circumferentially aligned with the hole 26, so upon rotation of the stem 4, the latch II will come into radial alignment with the hole 26, Which latch is depressed and the spring I4 will urged the latch outward into engagement with hole 26 when in alignment therewith. With the latch .II engaged in the hole 26, -the sleeve 20 may be seated upon the upper face of tappet T and the handle 2 rotated while tappet T and sleeve 20 are held against rotation, which will normally hold stem 4 against rotation, as the piston sleeve `I0 -being removed will usually be stuck. However, thestem 4 may beheld against rotationbyusinga wrenchon nut 5. By exerting turning action ,on handle 2, the stem will be lifted upward by the action of screw threaded stem `4 `and since the 'hole within the sleeve 20 is slightlyglarger than the external diameter o f the piston sleeve I IJ being removed, the sleeve may be withdrawn from .the valve .tappet T.

The sleeve 20 is beveled at 21 so as to guide the .tappet T into an annular shoulder recess 28 whichcenters the tappet T with respect to the stem f4 of the tool. After the piston sleeve I0 is removedfrom the tappet T, a slender instrument may be inserted through hole 26 to depress latch II until the sleeve I D'becomes disengaged therefrom. This enables the sleeve to be removed from the tool thus freeing it f or reuse.

It is to be appreciated that a tool of this character `may be easily and ,readily used for the removal of thepistontappet sleeves, and while primarily used on automobileengines, it is to be understood that the tool can be applied for use on any internal combustion engine.

While the tool has Ibeen described in some detail in oneembodiment thereof, itis to be understood that changes may be made in the -minor details of construction without departing from the spirit of theinvention las claimed.

Having thus clearly shown and described the invention, what is claimed as new and desired to secure by Letters Patent is:

1. In a tool for removing stuck piston sleeves from valve tappet members in hydraulic valve systems a bored and internally threaded body having a handle protruding therefrom, a counterbore formed in and end of said body and in axial alignment with the threaded portion thereof, an annular groove formed in the wall of said body opening into the aforesaid counterbore, a sleeve adapted to be positioned in said c ounterbore, a peripherial groove formed around said sleeve, said annular groove and said peripherial groove being adapted to register when said sleeve is seated in said counterbore, a lock ring interposed in said peripherial groove and said annular groove so as .to retain said sleeve and said body against relative axial movement while permitting relative rotary movement, a threaded stem extending through said body and threadably engaging the same and protruding therefrom, a resiliently pressed lateral nrger protruding from said threaded stem for engagement with said'piston sleeve in a valve tappet member; shoulder gauge means on said threaded stem to limit Ithe distance said stem carrying said lateral nger Aextends axially into said piston sleeve so said lateral iinger will register circumferentially with a hole in said piston sleeve. Y

2. In Va tool for removing .stuck piston sleeves from valve tappet {members' in hydraulic valve systems, a bored and internally threaded body having an outstanding handle, a counter-bore formed in and end o f said "-body, an annular groove formed in the wall `of said body lintermediate the length of said counterbore, a sleeve having a peripherial groove formed near the end thereof, which sleeve is fitted into said counterbore so said peripherial groove and said annular groove are in register, an outwardly expanding resilient `lock ring adapted to b e pressed within sai-d peripherial gro-ove in said sleeve so as to spring Aoutward to vinterengage said annular groove in said body when said grooves are in register so as to secure said body and said sleeve against axial movement while permitting relative turning movement between said body and said sleeve, a counterbore formedin the opposite end of said sleeve so as to receive an end of said valve tappet member and axially alien Said valve tappet member with said sleeve and with said body, a threaded stem Yextending ,through said body and threadably ,engaging YSame `and protruding therefrom and into -s aid sleeve, .the protruding end o f said threadedrsembeing reduced and having a shoulder formed thereon, and a spring pressed lateral linger protruding fromsaid reduced portion 0f said threaded-stemforengagement with a piston sleeve insaid valve tappet when said nger isin register with a hole in said piston sleeve .to enable Vthe removal ofsaid piston sleeve from said valve tappet member upon rotation of said handle on said body.

' ALVIN C. GOBER.

.REFERENCES CITED vThe followingreferences are of record in vthe file of this patent:

UNITED STATES PATENTS Number Name Date 869,861 Alspaugh O c t. 29, 1 907 1,400,897 Moyles Dec. 2D, 19.21 1,585,707 Hartsock May v 25, 1926 1,608,800 Martin Nov. 30, 1926 2,022,5 49 Skelton,.v N ov..26, 1935