US2776470A - Cylinder sleeve pulling devices and the like - Google Patents

Description

Jan. 8, 1957 R. G. KNUDsL-:N

CYLINDER SLEEVE PULLING DEVICES AND THE LIKE Filed May 16, 1952 C? gw/ffy 6 w EW@ 4. W

2,776,47@ Patented Jan. 3, 1957 CYLINDER SLEEVE PULLING DEVICES AND THE LIKE Raymond G. Knudsen, Kenosha, Wis., assigner to Snap- On Tools Corporation, Kenosha, Wis., a corporation of Delaware Application May 16, 1952, Serial No. 288,118

4 Claims. (Cl. 29252) This invention relates to pullers and more particularly to cylinder sleeve pullers, although certain features thereof may be employed with equal advantage for other purposes.

It contemplates more especially the provision of improved puller instrumentalities involving an adjustable moment arm for the more effective application of pulling or lifting forces with simple attachments in relation to an engine block and its cylinders, that are effectively adapted to the pulling of cylinder sleeves.

Sleeve pullers are becoming increasingly popular owing to the fact that many internal combustion engines now resort to cylinder sleeves as liners rather than provide precision cylinders directlyin the engine block. In rebuilding engines, it is only necessary to remove the cylinder sleeves that are press tted in the cylinder bores and this is readily accomplished with a power puller that is eective in engaging the inner or lower peripheral edge of the sleeve prior to exerting an upward power or mechanical pull thereon.

In utilizing power actuators for pullers, the engine block is usually resorted to as a reactor or support against which the power actuator, such as a hydraulic ram, exerts its force to effect the lifting action.

Engine blocks diter in size and design so that there are varying spacings between the cylinders as well as between the point of attachment of the pulling instrumentalities with relation to the axes of the cylinders so that it has been found advantageous to provide simple pulling instrumentalities that are readily attachable to an existing attaching point on an engine block such as the threaded recesses for the cylinder head retaining bolts.

With this arrangement, it has been found desirable to provide pulling instrumentalities that are adjustable in relation to an engine block and its cylinders so that the pulling or lifting force can always be exerted in true alignment with the axis of the particular cylinder from which the cylinder sleeve is being removed. This has been accomplished with simple and effective instrumentalities which can be adjustably anchored in relation to the cylinder sleeve and the power actuator for ready attachment and use in conjunction with engine blocks of varying types and design.

One object of the present invention is to simplify the construction and improve the operation of devices of the character mentioned.

Another object is to provide an improved sleeve puller involving simple tension transmitting ropes and/ or chains and the like that can be effectively used in conjunction with a power actuator in axial alignment with cylinders on any particular engine block.

Still another object is to provide an improved sleeve puller embodying a simple engine block support capable of ready attachment and detachment with respect to the engine head retaining bolt recesses already provided therein.

A further object is to provide improved and simplified CTI cylinder sleeve puller instrumentalities involving a exible tension transmitting rope in conjunction with a movable sleeve engaging adapter for adjustable connection to a power actuator to exert an effective pulling force in axial alignment with cylinders of the engine block.

A still further object is to provide a simple and more effective sleeve puller embodying a flexible tension transmitting rope interposed between a mounting frame therefore for adjustable connection therewith in order to enable axial alignment with the cylinders of an engine block.

Still a further object is to provide a simple and eiiective engine block mounting frame and power actuator having a tension transmitting rope serving as an adjustable pulling element in relation therewith and a sleeve engaging adapter having movable engagement to minimize the frictional reaction therebetween.

Other objects and advantages will appear from the following description of an illustrated embodiment of the present invention.

In the drawing:

Figure 1 is a front View in elevation of sleeve pulling instrumentalities shown in conjunction with an engine block that is broken away to clarify the showing and which pulling instrumentalities embody features of the present invention, the parts being shown in their relative positions preparatory to lifting the sleeve from its cylinder.

Figure 2 is an enlarged sectional View in elevation of the instrumentalities shown in Figure l with the piston sleeve and other parts shown in the position after the sleeve has been removed from the cylinder.

Figure 3 is a plan view of the sleeve pulling instrumentalities illustrated in Figure 1.

Figure 4 is a plan sectional view taken substantially along line lV-IV of Figure 1.

Figure 5 is a plan sectional view taken substantially along line VK-V of Figure 1.

The structure selected for illustration is not intended to serve as a limitation upon the scope or teachings of the j The problem of removing the cylinder sleeve 12 from the cylinder 11 is rendered rather simple by utilizing a puller that effectively engages the lower peripheral edge 14 of the sleeve 12. and exerting an upward or outward pull thereon by any suitable actuator such as a mechanical screw member or hydraulic ram of a portable type. The speciic type of actuator may be varied Within a wide range depending upon the dictates of commercial practice.

Engine blocks 10 are provided with threaded recesses 15 in close proximity to their cylinder bores 11 to enable the tight engagement and attachment of the cylinder head thereto through the medium of correspondingly threaded bolts. The pulling instrumentalities of the present invention embody a vertical standard 16 comprising, in this instance, the cylindrical post that terminates proximate to its lower end to provide a polygonal such as a hexagonal shoulder 17 just above a threaded extremity 1S of somewhat reduced diameter in order to serve as a` complement of and engage with the threaded recesses 15 provided in the engine block 10 and normally existing therein to constitute a medium of attachment for the engine block cylinder head (not shown). It should be noted that the standard v16 may rest directly on the top surface of the engine blocks without any threaded attachment thereto to provide greater freedom in the positioning thereof, since the threaded anchor described supra is not 3 essential to the operation of the instrumentalities associated with and supported by the standard 16.

The standard or post 16 extends upwardly for a distance that is somewhat greater than the normal heighth of the cylinder sleeve 12 and is provided with a peripheral shoulder 19 below a threaded post extension 20 that serves as a mount for a laterally extending arm 21.

The laterally extending arm 21 is furcated to provide an elongated slot or opening 22 therein of varying width and form to receive the standard or post extension that may be locked or secured thereto by means of a fastener such as a threaded nut 23 that engages the correspondingly threaded extension 24 of the post extension 2t). With this arrangement, the laterally extending arm 21 can be adjustably mounted in relation to the post extension 20 at any point along the narrow elongated slot 22 which merges in and terminates in an enlarged opening 25 provided in the frame arm 21 to permit the passage of a pulling instrumentality such as a cable-type member therethrough as will appear more fully hereinafter.

A liexible rope anchoring terminal shank 26 terminates in an apertured circular extremity 27 to receive a cross pin 23 therein that rests in the frame arm 21 for support by the confronting spaced portions that define the narrow slot or opening 22 therein so that the terminal shank 26 can be laterally adjusted for support at any point along the narrow opening or slot 22 in the frame 21.

A flexible tension transmitting rope or cable 29 is anchored in the terminal shank 26 to extend over and along the roller Sil mounted on a pin 31 carried by the confronting furcations 32-33 of a depending yoke stud 34. The yoke stud 34 terminates in a threaded extremity 35 that carries a fastener, such as a nut 36, which retains and sustains a substantially circular adapter plate 37 that has a peripheral shoulder 38 provided therein to engage the underside or lower peripheral edge 14 of the cylinder sleeve 12.

To this end, the cylinder sleeve engaging adapter plate 37 is provided with an axially apertured bushing 39 which aperture is larger in diameter than the yoke stud 34 in order to tiltably retain the cylinder sleeve engaging adapter 37 thereon by means of the threaded nut 36.

It is desirable that the sleeve engaging adapter plate 37 have tangentially straight parallel sides 40-41 which would enable it to be tiltably disposed and displaced downwardly through the sleeve 12 to engage the underside or peripheral bottom edge 14 thereof; however, when the cylinder sleeves 12 are removed, there is the general requirement to remove the oil pan that is attached to the underside of the engine block 16 so that it may not be important to insert the adapter plate 37 from above. In that event, the sleeve adapter engaging plate 37 could be of true circular configuration and applied from underneath to engage the bottom peripheral cylinder sleeve edge i4 by attachment to the yoke stud 34 through the medium of the detachable retainer nut 36 thereof.

lt should be noted that the flexible tension transmitting rope or cable 29 extends around the pulley or sheave 30 and terminates in a tubular terminal shank 42 to which it is anchored at its other free extremity for attachment of a link chain extension 43 of standard construction. The link chain 43 of standard construction is connected to the terminal shank 42 by means of spaced shackle plates 44.-45 that have link pins 46-47 extending therethrough to connect the link chain extension 43 thereto. The link chain extension 43 together with the cable terminal shank 42 extend upwardly to provide a substantially U-shaped arrangement for the flexible tension transmitting cable 29 after the latter extends over the pulley or sheave 3b.

With this arrangement, the cable terminal shank 42 together with the link chain 43. extending upwardly through an enlarged opening 25 in the frame arm 21 and the enlarged opening 25 connects with the comparatively narrow or elongated opening or slot 22 (Figure 4) so that the frame arm 21 will support the terminal shank 26 by its cross pin 28 at any point along the comparatively narrow elongated slot or opening 22 therein, while the other end of the cable 29 dened by the terminal shank 42 will extend upwardly through the enlarged frame opening 25, thereby enabling the sleeve adapter plate 37 to be suspended in axial alignment with the cylinder 11 on any engine block 10 to which the upstanding post or standard 16 has been threadedly connected in the nearest threaded recess 15 of the engine block 10 of which there are many provided proximate to the sleeve bores therein.

Not only can the flexible cable 29 be laterally positioned to accomplish axial alignment with the cylinder bore 11 to exert a direct axial pull of the cylinder sleeve l2 thereof, but the frame arm 21 is also laterally adjustable relative to the post extension Z0 to accomplish the same axial alignment so that this arrangement of simple lifting instrumentalities will be adaptable to most any engine block 10 irrespective of its size, design or spacing of the cylinder bores 11 therein.

In order to exert a direct axial lifting force to the cylinder sleeve 12, after the adapter plate 37 is in position, engaging the lower or bottom peripheral cylinder sleeve edge 14, the cable extension chain 43 is attached by any of its transversely disposed links 48 to a laterally extending ann 49 xed to the upper end of the power actuator ram Si). To this end, the ram arm 49 terminates in a furcated end 51 that presents a suciently wide opening or slot 52 to freely receive the alternate longitudinally disposed links 4S', but not sufficiently wide to permit the displacement of the transversely disposed alternate links 48" so that the link chain 49 can be utilized to tension the exible cable 29 around the pulley or sheave 3@ by association of the chain 43 in its proper position on the furcated extremity 51 of the ram arm 49 when the power actuator 50 is in its extreme inward position relative to the ram cylinder 53 which is of standard or any approved construction.

The ram Si? and the ram cylinder SZ- cornprise elements of a hydraulic power actuator 54 of standard or suitable construction. These hydraulic power actuators 54 are usually operated through lever links 55--56 that, in turn, pivotally connect to a lever arm 57 for attachment of a handle 58 through which the ram Sil is hydraulically displaced outwardly to carry with it the chain that in turn pulls the flexible rope or cable 29 to turn the sheave or pulley 3i?, thereby displacing the adapter plate 37 upwardly in axial alignment with the sheave stud 34 and to displace therewith the sleeve cylinder i2. Thisv is made possible by oscillating the power actuator handle 58 to pump the hydraulic fuel, usually oil. that in turn displaces a piston (not shown) within the power actuator cylinder 53. This displacement of the piston, will provide corresponding displacement of the ram 5t? displaced therewith to lift the ram tripl arm 49 that engages the link chain 4.3 and displaces the adapter sleeve engaging plate 37 with a power load capacity sutlicient to displace the cylinder sleeve 12 from the cylinder bore 1l.

An oil pressure release stud 59 is provided on the power actuator 54 as a standard instrumentality to withdraw the ram 50 within the power actua-tor cylinder 53 preparato-ry to repeating the power load displacement of the ram 50. With the arrangement of parts above described, it will be apparent that a very simple and inexpensive sleeve puller has been provided that is highly eliectiye and adaptable to engine blocks of ditierent sizes and designs. Vhen another sleeve of any particular cylinder bore l1 is to be removed, it is only necessary to detach the standard or post 16 from the engine block threaded recesses 1S and attach it to a simiiar threaded recess i5 proximate to the cylinder bore 1l, wherein cyiinder sleeve 12 is to be'raised' or removed.

it should be noted' that the power actuator 54 rests directly on the engine block l@ to react therewith and is further held in position by means of an extension 59' `on the frame arm 21 which is provided with a vertical bore 60 to freely receive the ram 50, thereby maintaining it in Vertical upright position vfor support on the engine block in the position diametrically acro-ss the point of contact of the standard or post 16 with the top surface of the engine block 10.

Consequently, the cylinder sleeve adapter engaging plate 37 can be suspended from the yoke 33 in exact axial alignment with the cylinder bore 11 and this can be adjusted by either changing the mounting position of the liexible cable supporting cross stud or pin 28 along the length of the frame opening or by changing the posi'- tion of attachment of the post extension 20 therein.

While I have illustrated and described a preferred embodiment of this invention, it must be understood that the invention is capable of considerable variation and modification without departing from the spirit of the invention. l, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

I claim:

1. In a self-contained portable sleeve pulling device, the combination with an upstanding standard for vertical support upon the top surface of an engine block, of an arm attached to the upper end region of said standard to extend over a cylinder bore in the engine block, means on said arm for anchoring a flexible tension transmitting cable thereto, a exible tension transmitting cable anchored at one extremity to said arm anchoring means, a power actuator having a ram for mounting on the engine block and supported by said arm, there being means on said arm for guided movable support of said ram in parallel relation with said upstanding standard on the engine block, cylinder sleeve engaging adapter means movably associated with said iiexible tension transmitting cable intermediate the extremities thereof for passage downwardly through the engine cylinder to engage the lower peripheral edge of a cylinder sleeve therein, and an offset arm on said power actuator ram for engaging the other extremity of said flexible tension transmitting cable.

2. In a self-contained portable sleeve pulling device, the combination with an upstanding standard for vertical support upon the top surface of an engine block, of a furcated arm attached to the upper end region of said standard to extend over a cylinder bore in the engine block, means between the furcations of said arm for anchoring a flexible tension transmitting cable thereto, a exible tension transmitting cable anchored at one extremity to said arm anchoring means, a power actuator having a ram for mounting on the engine block and supported by said arm, there being means on said arm for guided movable support of said arm in parallel relation with said upstanding standard on the engine block, cylinder sleeve engaging adapter means movably associated with said flexible tension transmitting cable intermediate the extremities thereof for passage downwardly through the engine cylinder to engage the lower peripheral edgeof a cylinder sleeve therein, and an offset arm on said power actuator ram for engaging the other extremity of said iiexible tension transmitting cable.

3. In a self-contained portable sleeve pulling device, the combination with an upstanding standard for vertical support upon the top surface of an engine block, of a furcated arm attached to the upper end region of said standard to extend over a cylinder bore in the engine block, means between the furcations of said arm for anchoring a flexible tension transmitting cable thereto, a ilexible tension transmitting cable anchored at one extremity to said arm anchoring means, a power actuator having a ramY for mounting on the engine block and supported by said arm, there being means on said arm for guided movable support of said arm in parallel relation with said upstanding standard on the engine block, cylinder sleeve engaging adapter means, a roller yoke extending from said cylinder sleeve engaging adapter and movably associated with said exible tension transmitting cable intermediate the extremities thereof for passage downwardly through the engine cylinder to engage the lower peripheral edge of a cylinder sleeve therein, and an offset arm on said power actuator ram for engaging the other extremity of said flexible tension transmitting cable.

4. In a self-contained portable sleeve pulling device, the combination with an upstanding standard for vertical support upon the top surface of an engine block, of a furcated arm attached to the upper end region of said standard to extend over a cylinder bore in the engine block, means between the furcations of said arm for anchoring a flexible tension transmitting cable thereto, a flexible tension transmitting cable anchored at one extremity to said arm anchoring means, a power actuator having' a ram for mounting on the engine block and supported by said arm, there being means on said arm for guided movable support of said arm in parallel relation with said upstanding standard on the engine block, cylinder sleeve engaging adapter means, a roller yoke extending from said cylinder sleeve engaging adapter and movably associated with said tlexible tension transmitting cable intermediate the extremities thereof for passage downwardly through the engine cylinder to engage the lower peripheral edge of a cylinder sleeve therein, a link chain extending from said liexible tension transmitting cable, and an offset arm on said power actuator ram for adjustably engaging any one link of the other extremity of said flexible tension transmitting cable extending chain.

References Cited in the le of this patent UNITED STATES PATENTS 1,924,740 Harry et al Aug. 29, 1933 2,474,045 Freeland June 21, 1949 2,507,003 Gagne May 9, 1950 2,564,267 Manke Aug. 14, 1951 2,566,847 Miller Sept. 4, 1951 FOREIGN PATENTS 678,513 France Mar. 25, 1930

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